diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c')
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c | 56 |
1 files changed, 35 insertions, 21 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c index 898d5dcf1012..ef5baee6c9c5 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Copyright (C) 2018-2022 Intel Corporation + * Copyright (C) 2018-2023 Intel Corporation */ #include <linux/firmware.h> #include "iwl-drv.h" @@ -586,8 +586,14 @@ static int iwl_dbg_tlv_alloc_fragments(struct iwl_fw_runtime *fwrt, fw_mon_cfg = &fwrt->trans->dbg.fw_mon_cfg[alloc_id]; fw_mon = &fwrt->trans->dbg.fw_mon_ini[alloc_id]; - if (fw_mon->num_frags || - fw_mon_cfg->buf_location != + if (fw_mon->num_frags) { + for (i = 0; i < fw_mon->num_frags; i++) + memset(fw_mon->frags[i].block, 0, + fw_mon->frags[i].size); + return 0; + } + + if (fw_mon_cfg->buf_location != cpu_to_le32(IWL_FW_INI_LOCATION_DRAM_PATH)) return 0; @@ -738,7 +744,8 @@ static int iwl_dbg_tlv_update_dram(struct iwl_fw_runtime *fwrt, if (le32_to_cpu(fwrt->trans->dbg.fw_mon_cfg[alloc_id].buf_location) != IWL_FW_INI_LOCATION_DRAM_PATH) { - IWL_DEBUG_FW(fwrt, "DRAM_PATH is not supported alloc_id %u\n", alloc_id); + IWL_DEBUG_FW(fwrt, "WRT: alloc_id %u location is not in DRAM_PATH\n", + alloc_id); return -1; } @@ -794,11 +801,14 @@ static void iwl_dbg_tlv_update_drams(struct iwl_fw_runtime *fwrt) IWL_UCODE_TLV_CAPA_DRAM_FRAG_SUPPORT)) return; - dram_info->first_word = cpu_to_le32(DRAM_INFO_FIRST_MAGIC_WORD); - dram_info->second_word = cpu_to_le32(DRAM_INFO_SECOND_MAGIC_WORD); + memset(dram_info, 0, sizeof(*dram_info)); for (i = IWL_FW_INI_ALLOCATION_ID_DBGC1; i < IWL_FW_INI_ALLOCATION_NUM; i++) { + if (fwrt->trans->dbg.fw_mon_cfg[i].buf_location == + IWL_FW_INI_LOCATION_INVALID) + continue; + ret = iwl_dbg_tlv_update_dram(fwrt, i, dram_info); if (!ret) dram_alloc = true; @@ -808,11 +818,10 @@ static void iwl_dbg_tlv_update_drams(struct iwl_fw_runtime *fwrt) i, ret); } - if (dram_alloc) - IWL_DEBUG_FW(fwrt, "block data after %08x\n", - dram_info->first_word); - else - memset(frags->block, 0, sizeof(*dram_info)); + if (dram_alloc) { + dram_info->first_word = cpu_to_le32(DRAM_INFO_FIRST_MAGIC_WORD); + dram_info->second_word = cpu_to_le32(DRAM_INFO_SECOND_MAGIC_WORD); + } } static void iwl_dbg_tlv_send_hcmds(struct iwl_fw_runtime *fwrt, @@ -1269,18 +1278,23 @@ static void iwl_dbg_tlv_init_cfg(struct iwl_fw_runtime *fwrt) int ret, i; u32 failed_alloc = 0; - if (*ini_dest != IWL_FW_INI_LOCATION_INVALID) - return; - - IWL_DEBUG_FW(fwrt, - "WRT: Generating active triggers list, domain 0x%x\n", - fwrt->trans->dbg.domains_bitmap); + if (*ini_dest == IWL_FW_INI_LOCATION_INVALID) { + IWL_DEBUG_FW(fwrt, + "WRT: Generating active triggers list, domain 0x%x\n", + fwrt->trans->dbg.domains_bitmap); - for (i = 0; i < ARRAY_SIZE(fwrt->trans->dbg.time_point); i++) { - struct iwl_dbg_tlv_time_point_data *tp = - &fwrt->trans->dbg.time_point[i]; + for (i = 0; i < ARRAY_SIZE(fwrt->trans->dbg.time_point); i++) { + struct iwl_dbg_tlv_time_point_data *tp = + &fwrt->trans->dbg.time_point[i]; - iwl_dbg_tlv_gen_active_trig_list(fwrt, tp); + iwl_dbg_tlv_gen_active_trig_list(fwrt, tp); + } + } else if (*ini_dest != IWL_FW_INI_LOCATION_DRAM_PATH) { + /* For DRAM, go through the loop below to clear all the buffers + * properly on restart, otherwise garbage may be left there and + * leak into new debug dumps. + */ + return; } *ini_dest = IWL_FW_INI_LOCATION_INVALID; |