From beb44c0c402a6c6aa5df90d98b5da66d0beac0c4 Mon Sep 17 00:00:00 2001 From: Mordechay Goodstein Date: Wed, 10 Feb 2021 14:29:16 +0200 Subject: [PATCH] iwlwifi: dbg: remove unsupported regions In case user requested to register an unsupported regions, remove it from active list and trigger list, this saves operational driver memory and run time at collecting debug data. Signed-off-by: Mordechay Goodstein Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/iwlwifi.20210210142629.a0cc944040e8.I3ae37547452b39f8040428c21ed47bdc67ae8f71@changeid Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 6 ++-- drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c | 36 +++++++++++++++++++++++- drivers/net/wireless/intel/iwlwifi/iwl-trans.h | 1 + 3 files changed, 40 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c index 1fdf80f..e873292 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c @@ -2073,7 +2073,8 @@ static u32 iwl_dump_ini_info(struct iwl_fw_runtime *fwrt, dump->umac_minor = cpu_to_le32(fwrt->dump.fw_ver.umac_minor); dump->fw_mon_mode = cpu_to_le32(fwrt->trans->dbg.ini_dest); - dump->regions_mask = trigger->regions_mask; + dump->regions_mask = trigger->regions_mask & + ~cpu_to_le64(fwrt->trans->dbg.unsupported_region_msk); dump->build_tag_len = cpu_to_le32(sizeof(dump->build_tag)); memcpy(dump->build_tag, fwrt->fw->human_readable, @@ -2202,7 +2203,8 @@ static u32 iwl_dump_ini_trigger(struct iwl_fw_runtime *fwrt, }; int i; u32 size = 0; - u64 regions_mask = le64_to_cpu(trigger->regions_mask); + u64 regions_mask = le64_to_cpu(trigger->regions_mask) & + ~(fwrt->trans->dbg.unsupported_region_msk); BUILD_BUG_ON(sizeof(trigger->regions_mask) != sizeof(regions_mask)); BUILD_BUG_ON((sizeof(trigger->regions_mask) * BITS_PER_BYTE) < diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c index 12c49fe..579bc81 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c @@ -959,6 +959,7 @@ static void iwl_dbg_tlv_init_cfg(struct iwl_fw_runtime *fwrt) { enum iwl_fw_ini_buffer_location *ini_dest = &fwrt->trans->dbg.ini_dest; int ret, i; + u32 failed_alloc = 0; if (*ini_dest != IWL_FW_INI_LOCATION_INVALID) return; @@ -990,10 +991,43 @@ static void iwl_dbg_tlv_init_cfg(struct iwl_fw_runtime *fwrt) continue; ret = iwl_dbg_tlv_alloc_fragments(fwrt, i); - if (ret) + + if (ret) { IWL_WARN(fwrt, "WRT: Failed to allocate DRAM buffer for allocation id %d, ret=%d\n", i, ret); + failed_alloc |= BIT(i); + } + } + + if (!failed_alloc) + return; + + for (i = 0; i < ARRAY_SIZE(fwrt->trans->dbg.active_regions) && failed_alloc; i++) { + struct iwl_fw_ini_region_tlv *reg; + struct iwl_ucode_tlv **active_reg = + &fwrt->trans->dbg.active_regions[i]; + u32 reg_type; + + if (!*active_reg) + continue; + + reg = (void *)(*active_reg)->data; + reg_type = le32_to_cpu(reg->type); + + if (reg_type != IWL_FW_INI_REGION_DRAM_BUFFER || + !(BIT(le32_to_cpu(reg->dram_alloc_id)) & failed_alloc)) + continue; + + IWL_DEBUG_FW(fwrt, + "WRT: removing allocation id %d from region id %d\n", + le32_to_cpu(reg->dram_alloc_id), i); + + failed_alloc &= ~le32_to_cpu(reg->dram_alloc_id); + fwrt->trans->dbg.unsupported_region_msk |= BIT(i); + + kfree(*active_reg); + *active_reg = NULL; } } diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h index 3348d58..70caee03 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h @@ -746,6 +746,7 @@ struct iwl_trans_debug { bool hw_error; enum iwl_fw_ini_buffer_location ini_dest; + u64 unsupported_region_msk; struct iwl_ucode_tlv *active_regions[IWL_FW_INI_MAX_REGION_ID]; struct list_head debug_info_tlv_list; struct iwl_dbg_tlv_time_point_data -- 2.7.4