From patchwork Tue Aug 19 08:23:07 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalle Valo X-Patchwork-Id: 4741281 Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B9A499F344 for ; Tue, 19 Aug 2014 08:23:18 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BF02920154 for ; Tue, 19 Aug 2014 08:23:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CB86C20123 for ; Tue, 19 Aug 2014 08:23:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751980AbaHSIXO (ORCPT ); Tue, 19 Aug 2014 04:23:14 -0400 Received: from emh03.mail.saunalahti.fi ([62.142.5.109]:59175 "EHLO emh03.mail.saunalahti.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751972AbaHSIXN (ORCPT ); Tue, 19 Aug 2014 04:23:13 -0400 Received: from potku.adurom.net (a91-155-131-35.elisa-laajakaista.fi [91.155.131.35]) by emh03.mail.saunalahti.fi (Postfix) with ESMTP id 44A081887A1; Tue, 19 Aug 2014 11:23:11 +0300 (EEST) Subject: [PATCH v7 4/8] ath10k: save firmware stack upon firmware crash To: ath10k@lists.infradead.org From: Kalle Valo Cc: linux-wireless@vger.kernel.org Date: Tue, 19 Aug 2014 11:23:07 +0300 Message-ID: <20140819082307.16842.21519.stgit@potku.adurom.net> In-Reply-To: <20140819082038.16842.46876.stgit@potku.adurom.net> References: <20140819082038.16842.46876.stgit@potku.adurom.net> User-Agent: StGit/0.15 MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-7.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ben Greear Should help debug firmware crashes, and give users a way to provide some useful debug reports to firmware developers. Signed-off-by: Ben Greear Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/core.h | 1 + drivers/net/wireless/ath/ath10k/debug.c | 12 ++++++++++++ drivers/net/wireless/ath/ath10k/hw.h | 1 + drivers/net/wireless/ath/ath10k/pci.c | 13 +++++++++++++ 4 files changed, 27 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index 09c0a109368a..c397b064b72d 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -301,6 +301,7 @@ struct ath10k_fw_crash_data { struct timespec timestamp; struct ath10k_dbglog_entry_storage dbglog_entry_data; u32 reg_dump_values[REG_DUMP_COUNT_QCA988X]; + u8 stack_buf[ATH10K_FW_STACK_SIZE]; }; struct ath10k_debug { diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c index 8c3f9acd6492..faf3d36dbdeb 100644 --- a/drivers/net/wireless/ath/ath10k/debug.c +++ b/drivers/net/wireless/ath/ath10k/debug.c @@ -33,10 +33,12 @@ * enum ath10k_fw_crash_dump_type - types of data in the dump file * @ATH10K_FW_CRASH_DUMP_DBGLOG: Recent firmware debug log entries * @ATH10K_FW_CRASH_DUMP_REGDUMP: Register crash dump in binary format + * @ATH10K_FW_CRASH_DUMP_STACK: Stack memory contents. */ enum ath10k_fw_crash_dump_type { ATH10K_FW_CRASH_DUMP_DBGLOG = 0, ATH10K_FW_CRASH_DUMP_REGDUMP = 1, + ATH10K_FW_CRASH_DUMP_STACK = 2, ATH10K_FW_CRASH_DUMP_MAX, }; @@ -721,6 +723,7 @@ static struct ath10k_dump_file_data *ath10k_build_dump_file(struct ath10k *ar) len = hdr_len; len += sizeof(*dump_tlv) + sizeof(crash_data->reg_dump_values); len += sizeof(*dump_tlv) + sizeof(crash_data->dbglog_entry_data); + len += sizeof(*dump_tlv) + sizeof(crash_data->stack_buf); sofar += hdr_len; @@ -787,10 +790,19 @@ static struct ath10k_dump_file_data *ath10k_build_dump_file(struct ath10k *ar) sizeof(crash_data->reg_dump_values)); sofar += sizeof(*dump_tlv) + sizeof(crash_data->reg_dump_values); + /* Gather firmware stack dump */ + dump_tlv = (struct ath10k_tlv_dump_data *)(buf + sofar); + dump_tlv->type = cpu_to_le32(ATH10K_FW_CRASH_DUMP_STACK); + dump_tlv->tlv_len = cpu_to_le32(sizeof(crash_data->stack_buf)); + memcpy(dump_tlv->tlv_data, crash_data->stack_buf, + sizeof(crash_data->stack_buf)); + sofar += sizeof(*dump_tlv) + sizeof(crash_data->stack_buf); + ar->debug.fw_crash_data->crashed_since_read = false; spin_unlock_bh(&ar->data_lock); + WARN_ON(sofar != len); return dump_data; } diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h index c931cce17063..db52a55e5bd1 100644 --- a/drivers/net/wireless/ath/ath10k/hw.h +++ b/drivers/net/wireless/ath/ath10k/hw.h @@ -40,6 +40,7 @@ #define ATH10K_FIRMWARE_MAGIC "QCA-ATH10K" #define REG_DUMP_COUNT_QCA988X 60 +#define ATH10K_FW_STACK_SIZE 4096 struct ath10k_fw_ie { __le32 id; diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c index 41ff620e1af2..81897b2db49f 100644 --- a/drivers/net/wireless/ath/ath10k/pci.c +++ b/drivers/net/wireless/ath/ath10k/pci.c @@ -832,6 +832,18 @@ static u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe) return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl); } +/* Save the main firmware stack */ +static void ath10k_pci_dump_stack(struct ath10k *ar, + struct ath10k_fw_crash_data *crash_data) +{ + lockdep_assert_held(&ar->data_lock); + + BUILD_BUG_ON(ATH10K_FW_STACK_SIZE % 4); + + ath10k_pci_diag_read_hi(ar, crash_data->stack_buf, + hi_stack, ATH10K_FW_STACK_SIZE); +} + static void ath10k_pci_dump_dbglog(struct ath10k *ar, struct ath10k_fw_crash_data *crash_data) { @@ -975,6 +987,7 @@ static void ath10k_pci_hif_dump_area(struct ath10k *ar) if (!crash_data) goto exit; + ath10k_pci_dump_stack(ar, crash_data); ath10k_pci_dump_registers(ar, crash_data); ath10k_pci_dump_dbglog(ar, crash_data);