From 0316d30ea3e66379cd30ed70a114bc282159bb4c Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 22 May 2015 13:41:07 +0200 Subject: [PATCH] iwlwifi: mvm: add minimal multi-RXQ infrastructure Since the new multi-queue capability depends on a new firmware API, we can already add some code for it. If the new API is present, a new opmode ops struct is used that handles the new rx_rss method. For now, only restructure the RX handling to distinguish between the two. Future patches will convert the new infrastructure to actually use the new RX descriptor layout. Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho --- drivers/net/wireless/iwlwifi/mvm/mvm.h | 6 ++ drivers/net/wireless/iwlwifi/mvm/ops.c | 104 ++++++++++++++++++------- 2 files changed, 83 insertions(+), 27 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h index f4e22f5a29d1..0d3aff1b4bad 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h @@ -970,6 +970,12 @@ static inline bool iwl_mvm_is_csum_supported(struct iwl_mvm *mvm) IWL_UCODE_TLV_CAPA_CSUM_SUPPORT); } +static inline bool iwl_mvm_has_new_rx_api(struct iwl_mvm *mvm) +{ + /* firmware flag isn't defined yet */ + return false; +} + extern const u8 iwl_mvm_ac_to_tx_fifo[]; struct iwl_rate_info { diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c index 0e8166fb31e9..064c100e45fe 100644 --- a/drivers/net/wireless/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/iwlwifi/mvm/ops.c @@ -89,6 +89,7 @@ MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); MODULE_LICENSE("GPL"); static const struct iwl_op_mode_ops iwl_mvm_ops; +static const struct iwl_op_mode_ops iwl_mvm_ops_mq; struct iwl_mvm_mod_params iwlmvm_mod_params = { .power_scheme = IWL_POWER_SCHEME_BPS, @@ -424,7 +425,6 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; op_mode = hw->priv; - op_mode->ops = &iwl_mvm_ops; mvm = IWL_OP_MODE_GET_MVM(op_mode); mvm->dev = trans->dev; @@ -433,6 +433,15 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, mvm->fw = fw; mvm->hw = hw; + if (iwl_mvm_has_new_rx_api(mvm)) { + op_mode->ops = &iwl_mvm_ops_mq; + } else { + op_mode->ops = &iwl_mvm_ops; + + if (WARN_ON(trans->num_rx_queues > 1)) + goto out_free; + } + mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; mvm->aux_queue = 15; @@ -719,21 +728,11 @@ static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, } } -static void iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, - struct napi_struct *napi, - struct iwl_rx_cmd_buffer *rxb) +static void iwl_mvm_rx_common(struct iwl_mvm *mvm, + struct iwl_rx_cmd_buffer *rxb, + struct iwl_rx_packet *pkt) { - struct iwl_rx_packet *pkt = rxb_addr(rxb); - struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); - u8 i; - - if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD)) { - iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); - return; - } else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD) { - iwl_mvm_rx_rx_phy_cmd(mvm, rxb); - return; - } + int i; iwl_mvm_rx_check_trigger(mvm, pkt); @@ -773,6 +772,36 @@ static void iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, } } +static void iwl_mvm_rx(struct iwl_op_mode *op_mode, + struct napi_struct *napi, + struct iwl_rx_cmd_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); + + if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD)) + iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); + else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD) + iwl_mvm_rx_rx_phy_cmd(mvm, rxb); + else + iwl_mvm_rx_common(mvm, rxb, pkt); +} + +static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, + struct napi_struct *napi, + struct iwl_rx_cmd_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); + + if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD)) + iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); + else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD) + iwl_mvm_rx_rx_phy_cmd(mvm, rxb); + else + iwl_mvm_rx_common(mvm, rxb, pkt); +} + static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) { struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); @@ -1366,17 +1395,38 @@ int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) return _iwl_mvm_exit_d0i3(mvm); } +#define IWL_MVM_COMMON_OPS \ + /* these could be differentiated */ \ + .queue_full = iwl_mvm_stop_sw_queue, \ + .queue_not_full = iwl_mvm_wake_sw_queue, \ + .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ + .free_skb = iwl_mvm_free_skb, \ + .nic_error = iwl_mvm_nic_error, \ + .cmd_queue_full = iwl_mvm_cmd_queue_full, \ + .nic_config = iwl_mvm_nic_config, \ + .enter_d0i3 = iwl_mvm_enter_d0i3, \ + .exit_d0i3 = iwl_mvm_exit_d0i3, \ + /* as we only register one, these MUST be common! */ \ + .start = iwl_op_mode_mvm_start, \ + .stop = iwl_op_mode_mvm_stop + static const struct iwl_op_mode_ops iwl_mvm_ops = { - .start = iwl_op_mode_mvm_start, - .stop = iwl_op_mode_mvm_stop, - .rx = iwl_mvm_rx_dispatch, - .queue_full = iwl_mvm_stop_sw_queue, - .queue_not_full = iwl_mvm_wake_sw_queue, - .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, - .free_skb = iwl_mvm_free_skb, - .nic_error = iwl_mvm_nic_error, - .cmd_queue_full = iwl_mvm_cmd_queue_full, - .nic_config = iwl_mvm_nic_config, - .enter_d0i3 = iwl_mvm_enter_d0i3, - .exit_d0i3 = iwl_mvm_exit_d0i3, + IWL_MVM_COMMON_OPS, + .rx = iwl_mvm_rx, +}; + +static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, + struct napi_struct *napi, + struct iwl_rx_cmd_buffer *rxb, + unsigned int queue) +{ + struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); + + iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); +} + +static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { + IWL_MVM_COMMON_OPS, + .rx = iwl_mvm_rx_mq, + .rx_rss = iwl_mvm_rx_mq_rss, }; -- 2.20.1