[v3] wifi: ath12k: Add firmware coredump collection support

Message ID	20240325183414.4016663-1-quic_ssreeela@quicinc.com (mailing list archive)
State	Changes Requested
Delegated to:	Kalle Valo
Headers	show Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7641717FF for <linux-wireless@vger.kernel.org>; Mon, 25 Mar 2024 18:35:25 +0000 (UTC) From: Sowmiya Sree Elavalagan <quic_ssreeela@quicinc.com> To: <ath12k@lists.infradead.org> CC: <linux-wireless@vger.kernel.org>, Sowmiya Sree Elavalagan <quic_ssreeela@quicinc.com> Subject: [PATCH v3]wifi: ath12k: Add firmware coredump collection support Date: Tue, 26 Mar 2024 00:04:14 +0530 Message-ID: <20240325183414.4016663-1-quic_ssreeela@quicinc.com> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain
Series	[v3] wifi: ath12k: Add firmware coredump collection support \| expand [v3] wifi: ath12k: Add firmware coredump collection support

diff --git a/drivers/net/wireless/ath/ath12k/Kconfig b/drivers/net/wireless/ath/ath12k/Kconfig index e135d2b1b61d..22d9634807f7 100644 --- a/drivers/net/wireless/ath/ath12k/Kconfig +++ b/drivers/net/wireless/ath/ath12k/Kconfig @@ -32,3 +32,13 @@ config ATH12K_TRACING If unsure, say Y to make it easier to debug problems. But if you want optimal performance choose N. + +config ATH12K_COREDUMP + bool "ath12k coredump" + depends on ATH12K + select WANT_DEV_COREDUMP + help + Enable ath12k coredump collection + + If unsure, say Y to make it easier to debug problems. But if + dump collection not required choose N. diff --git a/drivers/net/wireless/ath/ath12k/Makefile b/drivers/net/wireless/ath/ath12k/Makefile index 71669f94ff75..41c584acc582 100644 --- a/drivers/net/wireless/ath/ath12k/Makefile +++ b/drivers/net/wireless/ath/ath12k/Makefile @@ -24,6 +24,7 @@ ath12k-y += core.o \ p2p.o ath12k-$(CONFIG_ATH12K_TRACING) += trace.o +ath12k-$(CONFIG_ATH12K_COREDUMP) += coredump.o # for tracing framework to find trace.h CFLAGS_trace.o := -I$(src) diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c index 391b6fb2bd42..f0cc4959faf5 100644 --- a/drivers/net/wireless/ath/ath12k/core.c +++ b/drivers/net/wireless/ath/ath12k/core.c @@ -1121,6 +1121,7 @@ static void ath12k_core_reset(struct work_struct *work) reinit_completion(&ab->recovery_start); atomic_set(&ab->recovery_count, 0); + ath12k_coredump_collect(ab); ath12k_core_pre_reconfigure_recovery(ab); reinit_completion(&ab->reconfigure_complete); @@ -1220,6 +1221,7 @@ struct ath12k_base *ath12k_core_alloc(struct device *dev, size_t priv_size, INIT_WORK(&ab->restart_work, ath12k_core_restart); INIT_WORK(&ab->reset_work, ath12k_core_reset); INIT_WORK(&ab->rfkill_work, ath12k_rfkill_work); + INIT_WORK(&ab->dump_work, ath12k_coredump_upload); timer_setup(&ab->rx_replenish_retry, ath12k_ce_rx_replenish_retry, 0); init_completion(&ab->htc_suspend); diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h index 97e5a0ccd233..736958989794 100644 --- a/drivers/net/wireless/ath/ath12k/core.h +++ b/drivers/net/wireless/ath/ath12k/core.h @@ -26,6 +26,7 @@ #include "reg.h" #include "dbring.h" #include "fw.h" +#include "coredump.h" #define SM(_v, _f) (((_v) << _f##_LSB) & _f##_MASK) @@ -700,6 +701,10 @@ struct ath12k_base { /* HW channel counters frequency value in hertz common to all MACs */ u32 cc_freq_hz; + struct ath12k_dump_file_data *dump_data; + size_t ath12k_coredump_len; + struct work_struct dump_work; + struct ath12k_htc htc; struct ath12k_dp dp; diff --git a/drivers/net/wireless/ath/ath12k/coredump.c b/drivers/net/wireless/ath/ath12k/coredump.c new file mode 100644 index 000000000000..72d675d15e64 --- /dev/null +++ b/drivers/net/wireless/ath/ath12k/coredump.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: BSD-3-Clause-Clear +/* + * Copyright (c) 2020 The Linux Foundation. All rights reserved. + * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved. + */ +#include <linux/devcoredump.h> +#include "hif.h" +#include "coredump.h" +#include "debug.h" + +enum +ath12k_fw_crash_dump_type ath12k_coredump_get_dump_type(enum ath12k_qmi_target_mem type) +{ + enum ath12k_fw_crash_dump_type dump_type; + + switch (type) { + case HOST_DDR_REGION_TYPE: + dump_type = FW_CRASH_DUMP_REMOTE_MEM_DATA; + break; + case M3_DUMP_REGION_TYPE: + dump_type = FW_CRASH_DUMP_M3_DUMP; + break; + case PAGEABLE_MEM_REGION_TYPE: + dump_type = FW_CRASH_DUMP_PAGEABLE_DATA; + break; + case BDF_MEM_REGION_TYPE: + case CALDB_MEM_REGION_TYPE: + dump_type = FW_CRASH_DUMP_NONE; + break; + default: + dump_type = FW_CRASH_DUMP_TYPE_MAX; + break; + } + + return dump_type; +} + +void ath12k_coredump_upload(struct work_struct *work) +{ + struct ath12k_base *ab = container_of(work, struct ath12k_base, dump_work); + + ath12k_info(ab, "Uploading coredump\n"); + /* dev_coredumpv() takes ownership of the buffer */ + dev_coredumpv(ab->dev, ab->dump_data, ab->ath12k_coredump_len, GFP_KERNEL); + ab->dump_data = NULL; +} + +void ath12k_coredump_collect(struct ath12k_base *ab) +{ + ath12k_hif_coredump_download(ab); +} diff --git a/drivers/net/wireless/ath/ath12k/coredump.h b/drivers/net/wireless/ath/ath12k/coredump.h new file mode 100644 index 000000000000..5d6003b1c12d --- /dev/null +++ b/drivers/net/wireless/ath/ath12k/coredump.h @@ -0,0 +1,80 @@ +/* SPDX-License-Identifier: BSD-3-Clause-Clear */ +/* + * Copyright (c) 2020 The Linux Foundation. All rights reserved. + * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved. + */ +#ifndef _ATH12K_COREDUMP_H_ +#define _ATH12K_COREDUMP_H_ + +#define ATH12K_FW_CRASH_DUMP_V2 2 + +enum ath12k_fw_crash_dump_type { + FW_CRASH_DUMP_PAGING_DATA, + FW_CRASH_DUMP_RDDM_DATA, + FW_CRASH_DUMP_REMOTE_MEM_DATA, + FW_CRASH_DUMP_PAGEABLE_DATA, + FW_CRASH_DUMP_M3_DUMP, + FW_CRASH_DUMP_NONE, + + /* keep last */ + FW_CRASH_DUMP_TYPE_MAX, +}; + +#define COREDUMP_TLV_HDR_SIZE 8 + +struct ath12k_tlv_dump_data { + /* see ath11k_fw_crash_dump_type above */ + __le32 type; + + /* in bytes */ + __le32 tlv_len; + + /* pad to 32-bit boundaries as needed */ + u8 tlv_data[]; +} __packed; + +struct ath12k_dump_file_data { + /* "ATH12K-FW-DUMP" */ + char df_magic[16]; + /* total dump len in bytes */ + __le32 len; + /* file dump version */ + __le32 version; + /* pci device id */ + __le32 chip_id; + /* qrtr instance id */ + __le32 qrtr_id; + /* pci domain id */ + __le32 bus_id; + guid_t guid; + /* time-of-day stamp */ + __le64 tv_sec; + /* time-of-day stamp, nano-seconds */ + __le64 tv_nsec; + /* room for growth w/out changing binary format */ + u8 unused[128]; + u8 data[]; +} __packed; + +#ifdef CONFIG_ATH12K_COREDUMP +enum ath12k_fw_crash_dump_type ath12k_coredump_get_dump_type + (enum ath12k_qmi_target_mem type); +void ath12k_coredump_upload(struct work_struct *work); +void ath12k_coredump_collect(struct ath12k_base *ab); +#else +static inline enum ath12k_fw_crash_dump_type ath12k_coredump_get_dump_type + (enum ath12k_qmi_target_mem type) +{ + return FW_CRASH_DUMP_TYPE_MAX; +} + +static inline void ath12k_coredump_upload(struct work_struct *work) +{ +} + +static inline void ath12k_coredump_collect(struct ath12k_base *ab) +{ +} +#endif + +#endif diff --git a/drivers/net/wireless/ath/ath12k/hif.h b/drivers/net/wireless/ath/ath12k/hif.h index c653ca1f59b2..94fb8a9dbdf3 100644 --- a/drivers/net/wireless/ath/ath12k/hif.h +++ b/drivers/net/wireless/ath/ath12k/hif.h @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: BSD-3-Clause-Clear */ /* * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved. - * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved. */ #ifndef ATH12K_HIF_H @@ -30,6 +30,7 @@ struct ath12k_hif_ops { void (*ce_irq_enable)(struct ath12k_base *ab); void (*ce_irq_disable)(struct ath12k_base *ab); void (*get_ce_msi_idx)(struct ath12k_base *ab, u32 ce_id, u32 *msi_idx); + void (*coredump_download)(struct ath12k_base *ab); }; static inline int ath12k_hif_map_service_to_pipe(struct ath12k_base *ab, u16 service_id, @@ -141,4 +142,10 @@ static inline void ath12k_hif_power_down(struct ath12k_base *ab) ab->hif.ops->power_down(ab); } +static inline void ath12k_hif_coredump_download(struct ath12k_base *ab) +{ + if (ab->hif.ops->coredump_download) + ab->hif.ops->coredump_download(ab); +} + #endif /* ATH12K_HIF_H */ diff --git a/drivers/net/wireless/ath/ath12k/hw.c b/drivers/net/wireless/ath/ath12k/hw.c index 0b17dfd47856..6be5ce39ff8f 100644 --- a/drivers/net/wireless/ath/ath12k/hw.c +++ b/drivers/net/wireless/ath/ath12k/hw.c @@ -912,7 +912,7 @@ static const struct ath12k_hw_params ath12k_hw_params[] = { .rfkill_cfg = 0, .rfkill_on_level = 0, - .rddm_size = 0, + .rddm_size = 0x600000, .def_num_link = 0, .max_mlo_peer = 256, @@ -1053,7 +1053,7 @@ static const struct ath12k_hw_params ath12k_hw_params[] = { .rfkill_cfg = 0, .rfkill_on_level = 0, - .rddm_size = 0, + .rddm_size = 0x600000, .def_num_link = 0, .max_mlo_peer = 256, diff --git a/drivers/net/wireless/ath/ath12k/mhi.c b/drivers/net/wireless/ath/ath12k/mhi.c index adb8c3ec1950..2642eae40cf2 100644 --- a/drivers/net/wireless/ath/ath12k/mhi.c +++ b/drivers/net/wireless/ath/ath12k/mhi.c @@ -668,3 +668,8 @@ void ath12k_mhi_resume(struct ath12k_pci *ab_pci) { ath12k_mhi_set_state(ab_pci, ATH12K_MHI_RESUME); } + +void ath12k_mhi_coredump(struct mhi_controller *mhi_ctrl, bool in_panic) +{ + mhi_download_rddm_image(mhi_ctrl, in_panic); +} diff --git a/drivers/net/wireless/ath/ath12k/mhi.h b/drivers/net/wireless/ath/ath12k/mhi.h index ebc23640ce7a..3c9268824ca5 100644 --- a/drivers/net/wireless/ath/ath12k/mhi.h +++ b/drivers/net/wireless/ath/ath12k/mhi.h @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: BSD-3-Clause-Clear */ /* * Copyright (c) 2020-2021 The Linux Foundation. All rights reserved. - * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2021-2022, 2024 Qualcomm Innovation Center, Inc. All rights reserved. */ #ifndef _ATH12K_MHI_H #define _ATH12K_MHI_H @@ -42,5 +42,5 @@ void ath12k_mhi_clear_vector(struct ath12k_base *ab); void ath12k_mhi_suspend(struct ath12k_pci *ar_pci); void ath12k_mhi_resume(struct ath12k_pci *ar_pci); - +void ath12k_mhi_coredump(struct mhi_controller *mhi_ctrl, bool in_panic); #endif diff --git a/drivers/net/wireless/ath/ath12k/pci.c b/drivers/net/wireless/ath/ath12k/pci.c index 14954bc05144..5f45c77fda38 100644 --- a/drivers/net/wireless/ath/ath12k/pci.c +++ b/drivers/net/wireless/ath/ath12k/pci.c @@ -7,6 +7,7 @@ #include <linux/module.h> #include <linux/msi.h> #include <linux/pci.h> +#include <linux/time.h> #include "pci.h" #include "core.h" @@ -1240,6 +1241,186 @@ void ath12k_pci_write32(struct ath12k_base *ab, u32 offset, u32 value) ab_pci->pci_ops->release(ab); } +#ifdef CONFIG_ATH12K_COREDUMP +static int ath12k_pci_coredump_calculate_size(struct ath12k_base *ab, u32 *dump_seg_sz) +{ + struct ath12k_pci *ab_pci = ath12k_pci_priv(ab); + struct mhi_controller *mhi_ctrl = ab_pci->mhi_ctrl; + struct image_info *rddm_img, *fw_img; + struct ath12k_tlv_dump_data *dump_tlv; + enum ath12k_fw_crash_dump_type mem_type; + u32 len = 0, rddm_tlv_sz = 0, paging_tlv_sz = 0; + struct ath12k_dump_file_data *file_data; + int i; + + rddm_img = mhi_ctrl->rddm_image; + if (!rddm_img) { + ath12k_err(ab, "No RDDM dump found\n"); + return 0; + } + + fw_img = mhi_ctrl->fbc_image; + + for (i = 0; i < fw_img->entries ; i++) { + if (!fw_img->mhi_buf[i].buf) + continue; + + paging_tlv_sz += fw_img->mhi_buf[i].len; + } + dump_seg_sz[FW_CRASH_DUMP_PAGING_DATA] = paging_tlv_sz; + + for (i = 0; i < rddm_img->entries; i++) { + if (!rddm_img->mhi_buf[i].buf) + continue; + + rddm_tlv_sz += rddm_img->mhi_buf[i].len; + } + dump_seg_sz[FW_CRASH_DUMP_RDDM_DATA] = rddm_tlv_sz; + + for (i = 0; i < ab->qmi.mem_seg_count; i++) { + mem_type = ath12k_coredump_get_dump_type(ab->qmi.target_mem[i].type); + + if (mem_type == FW_CRASH_DUMP_NONE) + continue; + + if (mem_type == FW_CRASH_DUMP_TYPE_MAX) { + ath12k_dbg(ab, ATH12K_DBG_PCI, + "target mem region type %d not supported", + ab->qmi.target_mem[i].type); + continue; + } + + if (!ab->qmi.target_mem[i].paddr) + continue; + + dump_seg_sz[mem_type] += ab->qmi.target_mem[i].size; + } + + for (i = 0; i < FW_CRASH_DUMP_TYPE_MAX; i++) { + if (!dump_seg_sz[i]) + continue; + + len += sizeof(*dump_tlv) + dump_seg_sz[i]; + } + + if (len) + len += sizeof(*file_data); + + return len; +} + +static void ath12k_pci_coredump_download(struct ath12k_base *ab) +{ + struct ath12k_pci *ab_pci = ath12k_pci_priv(ab); + struct mhi_controller *mhi_ctrl = ab_pci->mhi_ctrl; + struct image_info *rddm_img, *fw_img; + struct timespec64 timestamp; + int i, len, mem_idx; + enum ath12k_fw_crash_dump_type mem_type; + struct ath12k_dump_file_data *file_data; + struct ath12k_tlv_dump_data *dump_tlv; + size_t hdr_len = sizeof(*file_data); + void *buf; + u32 dump_seg_sz[FW_CRASH_DUMP_TYPE_MAX] = { 0 }; + + ath12k_mhi_coredump(mhi_ctrl, false); + + len = ath12k_pci_coredump_calculate_size(ab, dump_seg_sz); + if (!len) { + ath12k_warn(ab, "No crash dump data found for devcoredump"); + return; + } + + rddm_img = mhi_ctrl->rddm_image; + fw_img = mhi_ctrl->fbc_image; + + /* dev_coredumpv() requires vmalloc data */ + buf = vzalloc(len); + if (!buf) + return; + + ab->dump_data = buf; + ab->ath12k_coredump_len = len; + file_data = ab->dump_data; + strscpy(file_data->df_magic, "ATH12K-FW-DUMP", sizeof(file_data->df_magic)); + file_data->len = cpu_to_le32(len); + file_data->version = cpu_to_le32(ATH12K_FW_CRASH_DUMP_V2); + file_data->chip_id = cpu_to_le32(ab_pci->dev_id); + file_data->qrtr_id = cpu_to_le32(ab_pci->ab->qmi.service_ins_id); + file_data->bus_id = cpu_to_le32(pci_domain_nr(ab_pci->pdev->bus)); + guid_gen(&file_data->guid); + ktime_get_real_ts64(&timestamp); + file_data->tv_sec = cpu_to_le64(timestamp.tv_sec); + file_data->tv_nsec = cpu_to_le64(timestamp.tv_nsec); + buf += hdr_len; + dump_tlv = buf; + dump_tlv->type = cpu_to_le32(FW_CRASH_DUMP_PAGING_DATA); + dump_tlv->tlv_len = cpu_to_le32(dump_seg_sz[FW_CRASH_DUMP_PAGING_DATA]); + buf += COREDUMP_TLV_HDR_SIZE; + + /* append all segments together as they are all part of a single contiguous + * block of memory + */ + for (i = 0; i < fw_img->entries ; i++) { + if (!fw_img->mhi_buf[i].buf) + continue; + + memcpy_fromio(buf, (void const __iomem *)fw_img->mhi_buf[i].buf, + fw_img->mhi_buf[i].len); + buf += fw_img->mhi_buf[i].len; + } + + dump_tlv = buf; + dump_tlv->type = cpu_to_le32(FW_CRASH_DUMP_RDDM_DATA); + dump_tlv->tlv_len = cpu_to_le32(dump_seg_sz[FW_CRASH_DUMP_RDDM_DATA]); + buf += COREDUMP_TLV_HDR_SIZE; + + /* append all segments together as they are all part of a single contiguous + * block of memory + */ + for (i = 0; i < rddm_img->entries; i++) { + if (!rddm_img->mhi_buf[i].buf) + continue; + + memcpy_fromio(buf, (void const __iomem *)rddm_img->mhi_buf[i].buf, + rddm_img->mhi_buf[i].len); + buf += rddm_img->mhi_buf[i].len; + } + + mem_idx = FW_CRASH_DUMP_REMOTE_MEM_DATA; + for (; mem_idx < FW_CRASH_DUMP_TYPE_MAX; mem_idx++) { + if (mem_idx == FW_CRASH_DUMP_NONE) + continue; + + dump_tlv = buf; + dump_tlv->type = cpu_to_le32(mem_idx); + dump_tlv->tlv_len = cpu_to_le32(dump_seg_sz[mem_idx]); + buf += COREDUMP_TLV_HDR_SIZE; + + for (i = 0; i < ab->qmi.mem_seg_count; i++) { + mem_type = ath12k_coredump_get_dump_type + (ab->qmi.target_mem[i].type); + + if (mem_type != mem_idx) + continue; + + if (!ab->qmi.target_mem[i].paddr) { + ath12k_dbg(ab, ATH12K_DBG_PCI, + "Skipping mem region type %d", + ab->qmi.target_mem[i].type); + continue; + } + + memcpy_fromio(buf, ab->qmi.target_mem[i].v.ioaddr, + ab->qmi.target_mem[i].size); + buf += ab->qmi.target_mem[i].size; + } + } + + queue_work(ab->workqueue, &ab->dump_work); +} +#endif + int ath12k_pci_power_up(struct ath12k_base *ab) { struct ath12k_pci *ab_pci = ath12k_pci_priv(ab); @@ -1302,6 +1483,9 @@ static const struct ath12k_hif_ops ath12k_pci_hif_ops = { .ce_irq_enable = ath12k_pci_hif_ce_irq_enable, .ce_irq_disable = ath12k_pci_hif_ce_irq_disable, .get_ce_msi_idx = ath12k_pci_get_ce_msi_idx, +#ifdef CONFIG_ATH12K_COREDUMP + .coredump_download = ath12k_pci_coredump_download, +#endif }; static @@ -1511,6 +1695,7 @@ static void ath12k_pci_remove(struct pci_dev *pdev) set_bit(ATH12K_FLAG_UNREGISTERING, &ab->dev_flags); cancel_work_sync(&ab->reset_work); + cancel_work_sync(&ab->dump_work); ath12k_core_deinit(ab); qmi_fail:

[v3] wifi: ath12k: Add firmware coredump collection support

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