From patchwork Wed Mar 30 14:05:12 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Emmanuel Grumbach X-Patchwork-Id: 8696871 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 9AAF4C0553 for ; Wed, 30 Mar 2016 14:06:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5F33E2037E for ; Wed, 30 Mar 2016 14:06:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EB1BF20382 for ; Wed, 30 Mar 2016 14:06:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754433AbcC3OGk (ORCPT ); Wed, 30 Mar 2016 10:06:40 -0400 Received: from mga14.intel.com ([192.55.52.115]:31955 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754366AbcC3OGc (ORCPT ); Wed, 30 Mar 2016 10:06:32 -0400 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP; 30 Mar 2016 07:06:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,416,1455004800"; d="scan'208";a="678002235" Received: from egrumbacbox.jer.intel.com ([10.12.124.189]) by FMSMGA003.fm.intel.com with ESMTP; 30 Mar 2016 07:06:16 -0700 From: Emmanuel Grumbach To: linux-wireless@vger.kernel.org Cc: Golan Ben-Ami , Emmanuel Grumbach Subject: [PATCH 40/43] iwlwifi: store fw memory segments length and addresses in run-time Date: Wed, 30 Mar 2016 17:05:12 +0300 Message-Id: <1459346715-7954-40-git-send-email-emmanuel.grumbach@intel.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1459346667.4731.9.camel@intel.com> References: <1459346667.4731.9.camel@intel.com> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable 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: Golan Ben-Ami Currently reading the fw memory segments is done according to addresses and data length that are hard-coded. Lately a new tlv was appended to the ucode, that contains the data type, length and address. Parse this tlv, and in run-time store the memory segments length and addresses that would be dumped upon a fw error. Signed-off-by: Golan Ben-Ami Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/intel/iwlwifi/iwl-drv.c | 45 +++++++++++++++++ drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h | 32 +++++++++++++ drivers/net/wireless/intel/iwlwifi/iwl-fw.h | 2 + drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c | 61 ++++++++++++++++++------ 4 files changed, 125 insertions(+), 15 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c index 605910f..48e8737 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c @@ -179,6 +179,8 @@ static void iwl_dealloc_ucode(struct iwl_drv *drv) kfree(drv->fw.dbg_conf_tlv[i]); for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_trigger_tlv); i++) kfree(drv->fw.dbg_trigger_tlv[i]); + for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_mem_tlv); i++) + kfree(drv->fw.dbg_mem_tlv[i]); for (i = 0; i < IWL_UCODE_TYPE_MAX; i++) iwl_free_fw_img(drv, drv->fw.img + i); @@ -297,6 +299,7 @@ struct iwl_firmware_pieces { size_t dbg_conf_tlv_len[FW_DBG_CONF_MAX]; struct iwl_fw_dbg_trigger_tlv *dbg_trigger_tlv[FW_DBG_TRIGGER_MAX]; size_t dbg_trigger_tlv_len[FW_DBG_TRIGGER_MAX]; + struct iwl_fw_dbg_mem_seg_tlv *dbg_mem_tlv[FW_DBG_MEM_MAX]; }; /* @@ -1041,6 +1044,37 @@ static int iwl_parse_tlv_firmware(struct iwl_drv *drv, iwl_store_gscan_capa(&drv->fw, tlv_data, tlv_len); gscan_capa = true; break; + case IWL_UCODE_TLV_FW_MEM_SEG: { + struct iwl_fw_dbg_mem_seg_tlv *dbg_mem = + (void *)tlv_data; + u32 type; + + if (tlv_len != (sizeof(*dbg_mem))) + goto invalid_tlv_len; + + type = le32_to_cpu(dbg_mem->data_type); + drv->fw.dbg_dynamic_mem = true; + + if (type >= ARRAY_SIZE(drv->fw.dbg_mem_tlv)) { + IWL_ERR(drv, + "Skip unknown dbg mem segment: %u\n", + dbg_mem->data_type); + break; + } + + if (pieces->dbg_mem_tlv[type]) { + IWL_ERR(drv, + "Ignore duplicate mem segment: %u\n", + dbg_mem->data_type); + break; + } + + IWL_DEBUG_INFO(drv, "Found debug memory segment: %u\n", + dbg_mem->data_type); + + pieces->dbg_mem_tlv[type] = dbg_mem; + break; + } default: IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type); break; @@ -1350,6 +1384,17 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context) } } + for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_mem_tlv); i++) { + if (pieces->dbg_mem_tlv[i]) { + drv->fw.dbg_mem_tlv[i] = + kmemdup(pieces->dbg_mem_tlv[i], + sizeof(*drv->fw.dbg_mem_tlv[i]), + GFP_KERNEL); + if (!drv->fw.dbg_mem_tlv[i]) + goto out_free_fw; + } + } + /* Now that we can no longer fail, copy information */ /* diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h b/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h index a6e8826..843232b 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h @@ -142,6 +142,7 @@ enum iwl_ucode_tlv_type { IWL_UCODE_TLV_FW_DBG_CONF = 39, IWL_UCODE_TLV_FW_DBG_TRIGGER = 40, IWL_UCODE_TLV_FW_GSCAN_CAPA = 50, + IWL_UCODE_TLV_FW_MEM_SEG = 51, }; struct iwl_ucode_tlv { @@ -492,6 +493,37 @@ enum iwl_fw_dbg_monitor_mode { }; /** + * enum iwl_fw_mem_seg_type - data types for dumping on error + * + * @FW_DBG_MEM_SMEM: the data type is SMEM + * @FW_DBG_MEM_DCCM_LMAC: the data type is DCCM_LMAC + * @FW_DBG_MEM_DCCM_UMAC: the data type is DCCM_UMAC + */ +enum iwl_fw_dbg_mem_seg_type { + FW_DBG_MEM_DCCM_LMAC = 0, + FW_DBG_MEM_DCCM_UMAC, + FW_DBG_MEM_SMEM, + + /* Must be last */ + FW_DBG_MEM_MAX, +}; + +/** + * struct iwl_fw_dbg_mem_seg_tlv - configures the debug data memory segments + * + * @data_type: enum %iwl_fw_mem_seg_type + * @ofs: the memory segment offset + * @len: the memory segment length, in bytes + * + * This parses IWL_UCODE_TLV_FW_MEM_SEG + */ +struct iwl_fw_dbg_mem_seg_tlv { + __le32 data_type; + __le32 ofs; + __le32 len; +} __packed; + +/** * struct iwl_fw_dbg_dest_tlv - configures the destination of the debug data * * @version: version of the TLV - currently 0 diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-fw.h b/drivers/net/wireless/intel/iwlwifi/iwl-fw.h index 2942571..e461d63 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-fw.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-fw.h @@ -286,6 +286,8 @@ struct iwl_fw { struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_CONF_MAX]; size_t dbg_conf_tlv_len[FW_DBG_CONF_MAX]; struct iwl_fw_dbg_trigger_tlv *dbg_trigger_tlv[FW_DBG_TRIGGER_MAX]; + struct iwl_fw_dbg_mem_seg_tlv *dbg_mem_tlv[FW_DBG_MEM_MAX]; + bool dbg_dynamic_mem; size_t dbg_trigger_tlv_len[FW_DBG_TRIGGER_MAX]; u8 dbg_dest_reg_num; struct iwl_gscan_capabilities gscan_capa; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c index 6ef706c..cbb5947 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c @@ -488,9 +488,11 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) struct iwl_fw_error_dump_trigger_desc *dump_trig; struct iwl_mvm_dump_ptrs *fw_error_dump; u32 sram_len, sram_ofs; + struct iwl_fw_dbg_mem_seg_tlv * const *fw_dbg_mem = + mvm->fw->dbg_mem_tlv; u32 file_len, fifo_data_len = 0, prph_len = 0, radio_len = 0; - u32 smem_len = mvm->cfg->smem_len; - u32 sram2_len = mvm->cfg->dccm2_len; + u32 smem_len = mvm->fw->dbg_dynamic_mem ? 0 : mvm->cfg->smem_len; + u32 sram2_len = mvm->fw->dbg_dynamic_mem ? 0 : mvm->cfg->dccm2_len; bool monitor_dump_only = false; int i; @@ -586,7 +588,6 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) file_len = sizeof(*dump_file) + sizeof(*dump_data) * 2 + - sram_len + sizeof(*dump_mem) + fifo_data_len + prph_len + radio_len + @@ -600,6 +601,13 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) if (sram2_len) file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len; + /* Make room for MEM segments */ + for (i = 0; i < ARRAY_SIZE(mvm->fw->dbg_mem_tlv); i++) { + if (fw_dbg_mem[i]) + file_len += sizeof(*dump_data) + sizeof(*dump_mem) + + le32_to_cpu(fw_dbg_mem[i]->len); + } + /* Make room for fw's virtual image pages, if it exists */ if (mvm->fw->img[mvm->cur_ucode].paging_mem_size) file_len += mvm->num_of_paging_blk * @@ -625,6 +633,9 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) file_len += sizeof(*dump_data) + sizeof(*dump_trig) + mvm->fw_dump_desc->len; + if (!mvm->fw->dbg_dynamic_mem) + file_len += sram_len + sizeof(*dump_mem); + dump_file = vzalloc(file_len); if (!dump_file) { kfree(fw_error_dump); @@ -674,16 +685,36 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) if (monitor_dump_only) goto dump_trans_data; - dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); - dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem)); - dump_mem = (void *)dump_data->data; - dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM); - dump_mem->offset = cpu_to_le32(sram_ofs); - iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data, - sram_len); + if (!mvm->fw->dbg_dynamic_mem) { + dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); + dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem)); + dump_mem = (void *)dump_data->data; + dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM); + dump_mem->offset = cpu_to_le32(sram_ofs); + iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data, + sram_len); + dump_data = iwl_fw_error_next_data(dump_data); + } + + for (i = 0; i < ARRAY_SIZE(mvm->fw->dbg_mem_tlv); i++) { + if (fw_dbg_mem[i]) { + u32 len = le32_to_cpu(fw_dbg_mem[i]->len); + u32 ofs = le32_to_cpu(fw_dbg_mem[i]->ofs); + + dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); + dump_data->len = cpu_to_le32(len + + sizeof(*dump_mem)); + dump_mem = (void *)dump_data->data; + dump_mem->type = fw_dbg_mem[i]->data_type; + dump_mem->offset = cpu_to_le32(ofs); + iwl_trans_read_mem_bytes(mvm->trans, ofs, + dump_mem->data, + len); + dump_data = iwl_fw_error_next_data(dump_data); + } + } if (smem_len) { - dump_data = iwl_fw_error_next_data(dump_data); dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem)); dump_mem = (void *)dump_data->data; @@ -691,10 +722,10 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset); iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset, dump_mem->data, smem_len); + dump_data = iwl_fw_error_next_data(dump_data); } if (sram2_len) { - dump_data = iwl_fw_error_next_data(dump_data); dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem)); dump_mem = (void *)dump_data->data; @@ -702,11 +733,11 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset); iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset, dump_mem->data, sram2_len); + dump_data = iwl_fw_error_next_data(dump_data); } if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 && CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) { - dump_data = iwl_fw_error_next_data(dump_data); dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN + sizeof(*dump_mem)); @@ -715,6 +746,7 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET); iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET, dump_mem->data, IWL8260_ICCM_LEN); + dump_data = iwl_fw_error_next_data(dump_data); } /* Dump fw's virtual image */ @@ -724,7 +756,6 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) struct page *pages = mvm->fw_paging_db[i].fw_paging_block; - dump_data = iwl_fw_error_next_data(dump_data); dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PAGING); dump_data->len = cpu_to_le32(sizeof(*paging) + PAGING_BLOCK_SIZE); @@ -732,10 +763,10 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) paging->index = cpu_to_le32(i); memcpy(paging->data, page_address(pages), PAGING_BLOCK_SIZE); + dump_data = iwl_fw_error_next_data(dump_data); } } - dump_data = iwl_fw_error_next_data(dump_data); if (prph_len) iwl_dump_prph(mvm->trans, &dump_data);