From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from paleale.coelho.fi ([176.9.41.70]:37862 "EHLO farmhouse.coelho.fi" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753429AbdBCOia (ORCPT ); Fri, 3 Feb 2017 09:38:30 -0500 From: Luca Coelho To: linux-wireless@vger.kernel.org Cc: kvalo@codeaurora.org, Sara Sharon , Luca Coelho Date: Fri, 3 Feb 2017 16:37:49 +0200 Message-Id: <20170203143812.7525-3-luca@coelho.fi> (sfid-20170203_153844_456440_BF7B5933) In-Reply-To: <20170203143812.7525-1-luca@coelho.fi> References: <20170203143812.7525-1-luca@coelho.fi> Subject: [PATCH 02/25] iwlwifi: mvm: support unification of INIT and RT images Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Sara Sharon For a000 devices the INIT and RT images are unified to one image. The changes in the flow are the following: * Driver load only RT firmware - meaning that the nvm access command will be done in the RT image load flow. * A new command (NVM_ACCESS_COMPLETE) now signals to the FW that the driver is done accessing the NVM and FW can proceed with phy calibrations. * Phy DB is no longer sent from INIT FW to be restored by driver for the RT FW - all the phy DB is now internal to the FW. INIT complete will now follow the NVM access command, without phy DB calls before. * Paging command is sent earlier in the flow before NVM access to enable a complete load of FW. * caution must be care when restart is called since we may have not completed init flow even though we are in RT firmware. Signed-off-by: Sara Sharon Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h | 12 ++ drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 208 ++++++++++++++++------ drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 2 - drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 3 + drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 24 ++- 5 files changed, 188 insertions(+), 61 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h index 567597c26115..563b17796017 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h @@ -341,6 +341,10 @@ enum iwl_prot_offload_subcmd_ids { STORED_BEACON_NTF = 0xFF, }; +enum iwl_regulatory_and_nvm_subcmd_ids { + NVM_ACCESS_COMPLETE = 0x0, +}; + enum iwl_fmac_debug_cmds { LMAC_RD_WR = 0x0, UMAC_RD_WR = 0x1, @@ -355,6 +359,7 @@ enum { PHY_OPS_GROUP = 0x4, DATA_PATH_GROUP = 0x5, PROT_OFFLOAD_GROUP = 0xb, + REGULATORY_AND_NVM_GROUP = 0xc, DEBUG_GROUP = 0xf, }; @@ -2200,4 +2205,11 @@ struct iwl_dbg_mem_access_rsp { __le32 data[]; } __packed; /* DEBUG_(U|L)MAC_RD_WR_RSP_API_S_VER_1 */ +/** + * struct iwl_nvm_access_complete_cmd - NVM_ACCESS commands are completed + */ +struct iwl_nvm_access_complete_cmd { + __le32 reserved; +} __packed; /* NVM_ACCESS_COMPLETE_CMD_API_S_VER_1 */ + #endif /* __fw_api_h__ */ diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index b278e44e97ad..dd8c8d8e9f18 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -522,6 +522,14 @@ static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait, return true; } +static bool iwl_wait_init_complete(struct iwl_notif_wait_data *notif_wait, + struct iwl_rx_packet *pkt, void *data) +{ + WARN_ON(pkt->hdr.cmd != INIT_COMPLETE_NOTIF); + + return true; +} + static bool iwl_wait_phy_db_entry(struct iwl_notif_wait_data *notif_wait, struct iwl_rx_packet *pkt, void *data) { @@ -537,6 +545,48 @@ static bool iwl_wait_phy_db_entry(struct iwl_notif_wait_data *notif_wait, return false; } +static int iwl_mvm_init_paging(struct iwl_mvm *mvm) +{ + const struct fw_img *fw = &mvm->fw->img[mvm->cur_ucode]; + int ret; + + /* + * Configure and operate fw paging mechanism. + * The driver configures the paging flow only once. + * The CPU2 paging image is included in the IWL_UCODE_INIT image. + */ + if (!fw->paging_mem_size) + return 0; + + /* + * When dma is not enabled, the driver needs to copy / write + * the downloaded / uploaded page to / from the smem. + * This gets the location of the place were the pages are + * stored. + */ + if (!is_device_dma_capable(mvm->trans->dev)) { + ret = iwl_trans_get_paging_item(mvm); + if (ret) { + IWL_ERR(mvm, "failed to get FW paging item\n"); + return ret; + } + } + + ret = iwl_save_fw_paging(mvm, fw); + if (ret) { + IWL_ERR(mvm, "failed to save the FW paging image\n"); + return ret; + } + + ret = iwl_send_paging_cmd(mvm, fw); + if (ret) { + IWL_ERR(mvm, "failed to send the paging cmd\n"); + iwl_free_fw_paging(mvm); + return ret; + } + + return 0; +} static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm, enum iwl_ucode_type ucode_type) { @@ -608,40 +658,6 @@ static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm, iwl_trans_fw_alive(mvm->trans, alive_data.scd_base_addr); /* - * configure and operate fw paging mechanism. - * driver configures the paging flow only once, CPU2 paging image - * included in the IWL_UCODE_INIT image. - */ - if (fw->paging_mem_size) { - /* - * When dma is not enabled, the driver needs to copy / write - * the downloaded / uploaded page to / from the smem. - * This gets the location of the place were the pages are - * stored. - */ - if (!is_device_dma_capable(mvm->trans->dev)) { - ret = iwl_trans_get_paging_item(mvm); - if (ret) { - IWL_ERR(mvm, "failed to get FW paging item\n"); - return ret; - } - } - - ret = iwl_save_fw_paging(mvm, fw); - if (ret) { - IWL_ERR(mvm, "failed to save the FW paging image\n"); - return ret; - } - - ret = iwl_send_paging_cmd(mvm, fw); - if (ret) { - IWL_ERR(mvm, "failed to send the paging cmd\n"); - iwl_free_fw_paging(mvm); - return ret; - } - } - - /* * Note: all the queues are enabled as part of the interface * initialization, but in firmware restart scenarios they * could be stopped, so wake them up. In firmware restart, @@ -798,6 +814,75 @@ int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm) return ret; } +int iwl_run_unified_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm) +{ + struct iwl_notification_wait init_wait; + struct iwl_nvm_access_complete_cmd nvm_complete = {}; + static const u16 init_complete[] = { + INIT_COMPLETE_NOTIF, + }; + int ret; + + lockdep_assert_held(&mvm->mutex); + + iwl_init_notification_wait(&mvm->notif_wait, + &init_wait, + init_complete, + ARRAY_SIZE(init_complete), + iwl_wait_init_complete, + NULL); + + /* Will also start the device */ + ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR); + if (ret) { + IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret); + goto error; + } + + /* TODO: remove when integrating context info */ + ret = iwl_mvm_init_paging(mvm); + if (ret) { + IWL_ERR(mvm, "Failed to init paging: %d\n", + ret); + goto error; + } + + /* Read the NVM only at driver load time, no need to do this twice */ + if (read_nvm) { + /* Read nvm */ + ret = iwl_nvm_init(mvm, true); + if (ret) { + IWL_ERR(mvm, "Failed to read NVM: %d\n", ret); + goto error; + } + } + + /* In case we read the NVM from external file, load it to the NIC */ + if (mvm->nvm_file_name) + iwl_mvm_load_nvm_to_nic(mvm); + + ret = iwl_nvm_check_version(mvm->nvm_data, mvm->trans); + if (WARN_ON(ret)) + goto error; + + ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(REGULATORY_AND_NVM_GROUP, + NVM_ACCESS_COMPLETE), 0, + sizeof(nvm_complete), &nvm_complete); + if (ret) { + IWL_ERR(mvm, "Failed to run complete NVM access: %d\n", + ret); + goto error; + } + + /* We wait for the INIT complete notification */ + return iwl_wait_notification(&mvm->notif_wait, &init_wait, + MVM_UCODE_ALIVE_TIMEOUT); + +error: + iwl_remove_notification(&mvm->notif_wait, &init_wait); + return ret; +} + static void iwl_mvm_parse_shared_mem_a000(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) { @@ -1058,23 +1143,13 @@ static int iwl_mvm_sar_init(struct iwl_mvm *mvm) return ret; } -int iwl_mvm_up(struct iwl_mvm *mvm) +static int iwl_mvm_load_rt_fw(struct iwl_mvm *mvm) { - int ret, i; - struct ieee80211_channel *chan; - struct cfg80211_chan_def chandef; - - lockdep_assert_held(&mvm->mutex); + int ret; - ret = iwl_trans_start_hw(mvm->trans); - if (ret) - return ret; + if (iwl_mvm_has_new_tx_api(mvm)) + return iwl_run_unified_mvm_ucode(mvm, false); - /* - * If we haven't completed the run of the init ucode during - * module loading, load init ucode now - * (for example, if we were in RFKILL) - */ ret = iwl_run_init_mvm_ucode(mvm, false); if (iwlmvm_mod_params.init_dbg) @@ -1085,7 +1160,7 @@ int iwl_mvm_up(struct iwl_mvm *mvm) /* this can't happen */ if (WARN_ON(ret > 0)) ret = -ERFKILL; - goto error; + return ret; } /* @@ -1096,9 +1171,28 @@ int iwl_mvm_up(struct iwl_mvm *mvm) _iwl_trans_stop_device(mvm->trans, false); ret = _iwl_trans_start_hw(mvm->trans, false); if (ret) - goto error; + return ret; ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR); + if (ret) + return ret; + + return iwl_mvm_init_paging(mvm); +} + +int iwl_mvm_up(struct iwl_mvm *mvm) +{ + int ret, i; + struct ieee80211_channel *chan; + struct cfg80211_chan_def chandef; + + lockdep_assert_held(&mvm->mutex); + + ret = iwl_trans_start_hw(mvm->trans); + if (ret) + return ret; + + ret = iwl_mvm_load_rt_fw(mvm); if (ret) { IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret); goto error; @@ -1125,13 +1219,15 @@ int iwl_mvm_up(struct iwl_mvm *mvm) goto error; /* Send phy db control command and then phy db calibration*/ - ret = iwl_send_phy_db_data(mvm->phy_db); - if (ret) - goto error; + if (!iwl_mvm_has_new_tx_api(mvm)) { + ret = iwl_send_phy_db_data(mvm->phy_db); + if (ret) + goto error; - ret = iwl_send_phy_cfg_cmd(mvm); - if (ret) - goto error; + ret = iwl_send_phy_cfg_cmd(mvm); + if (ret) + goto error; + } /* Init RSS configuration */ if (iwl_mvm_has_new_rx_api(mvm)) { diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index 71f9aa9f7c7d..8d519c3f45bd 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -1210,8 +1210,6 @@ void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) /* the fw is stopped, the aux sta is dead: clean up driver state */ iwl_mvm_del_aux_sta(mvm); - iwl_free_fw_paging(mvm); - /* * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete() * won't be called in this case). diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index a672aa71c656..74156b24da16 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -739,6 +739,7 @@ struct iwl_mvm { enum iwl_ucode_type cur_ucode; bool ucode_loaded; + bool hw_registered; bool calibrating; u32 error_event_table; u32 log_event_table; @@ -1257,6 +1258,7 @@ int __iwl_mvm_mac_start(struct iwl_mvm *mvm); ******************/ /* uCode */ int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm); +int iwl_run_unified_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm); /* Utils */ int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, @@ -1686,6 +1688,7 @@ void iwl_mvm_enable_ac_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, static inline void iwl_mvm_stop_device(struct iwl_mvm *mvm) { + iwl_free_fw_paging(mvm); mvm->ucode_loaded = false; iwl_trans_stop_device(mvm->trans); } diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index f14aada390c5..4cd72d4cdc47 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -466,6 +466,13 @@ static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { HCMD_NAME(STORED_BEACON_NTF), }; +/* Please keep this array *SORTED* by hex value. + * Access is done through binary search + */ +static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = { + HCMD_NAME(NVM_ACCESS_COMPLETE), +}; + static const struct iwl_hcmd_arr iwl_mvm_groups[] = { [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), @@ -474,6 +481,8 @@ static const struct iwl_hcmd_arr iwl_mvm_groups[] = { [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names), [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names), [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names), + [REGULATORY_AND_NVM_GROUP] = + HCMD_ARR(iwl_mvm_regulatory_and_nvm_names), }; /* this forward declaration can avoid to export the function */ @@ -597,7 +606,10 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE; } mvm->sf_state = SF_UNINIT; - mvm->cur_ucode = IWL_UCODE_INIT; + if (iwl_mvm_has_new_tx_api(mvm)) + mvm->cur_ucode = IWL_UCODE_REGULAR; + else + mvm->cur_ucode = IWL_UCODE_INIT; mvm->drop_bcn_ap_mode = true; mutex_init(&mvm->mutex); @@ -720,7 +732,10 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, mutex_lock(&mvm->mutex); iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); - err = iwl_run_init_mvm_ucode(mvm, true); + if (iwl_mvm_has_new_tx_api(mvm)) + err = iwl_run_unified_mvm_ucode(mvm, true); + else + err = iwl_run_init_mvm_ucode(mvm, true); if (!err || !iwlmvm_mod_params.init_dbg) iwl_mvm_stop_device(mvm); iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); @@ -743,6 +758,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, err = iwl_mvm_mac_setup_register(mvm); if (err) goto out_free; + mvm->hw_registered = true; min_backoff = calc_min_backoff(trans, cfg); iwl_mvm_thermal_initialize(mvm, min_backoff); @@ -764,6 +780,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, out_unregister: ieee80211_unregister_hw(mvm->hw); + mvm->hw_registered = false; iwl_mvm_leds_exit(mvm); iwl_mvm_thermal_exit(mvm); out_free: @@ -1192,7 +1209,8 @@ void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) reprobe->dev = mvm->trans->dev; INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); schedule_work(&reprobe->work); - } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) { + } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && + mvm->hw_registered) { /* don't let the transport/FW power down */ iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); -- 2.11.0