From c2c52e8bed1a186d060166ec57228e2a123cab2e Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Fri, 8 Jul 2011 08:46:11 -0700 Subject: [PATCH] iwlagn: add an API for RX stop Rx stop moves to transport layer. Signed-off-by: Emmanuel Grumbach Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-agn-lib.c | 24 +++++++--------------- drivers/net/wireless/iwlwifi/iwl-agn.h | 1 - drivers/net/wireless/iwlwifi/iwl-dev.h | 2 ++ drivers/net/wireless/iwlwifi/iwl-trans.c | 10 +++++++++ 4 files changed, 19 insertions(+), 18 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c index 90d366e15d2f..25a592a656a4 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c @@ -905,17 +905,6 @@ void iwlagn_rx_replenish_now(struct iwl_priv *priv) iwlagn_rx_queue_restock(priv); } -int iwlagn_rxq_stop(struct iwl_priv *priv) -{ - - /* stop Rx DMA */ - iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); - iwl_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG, - FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000); - - return 0; -} - int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band) { int idx = 0; @@ -2321,13 +2310,14 @@ void iwlagn_stop_device(struct iwl_priv *priv) * already dead. */ if (test_bit(STATUS_DEVICE_ENABLED, &priv->status)) { - iwlagn_txq_ctx_stop(priv); - iwlagn_rxq_stop(priv); + iwlagn_txq_ctx_stop(priv); + priv->trans.ops->rx_stop(priv); - /* Power-down device's busmaster DMA clocks */ - iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); - udelay(5); - } + /* Power-down device's busmaster DMA clocks */ + iwl_write_prph(priv, APMG_CLK_DIS_REG, + APMG_CLK_VAL_DMA_CLK_RQT); + udelay(5); + } /* Make sure (redundant) we've released our request to stay awake */ iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.h b/drivers/net/wireless/iwlwifi/iwl-agn.h index fabab0ff5577..0fa379b4f46b 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.h +++ b/drivers/net/wireless/iwlwifi/iwl-agn.h @@ -193,7 +193,6 @@ void iwlagn_rx_queue_restock(struct iwl_priv *priv); void iwlagn_rx_allocate(struct iwl_priv *priv, gfp_t priority); void iwlagn_rx_replenish(struct iwl_priv *priv); void iwlagn_rx_replenish_now(struct iwl_priv *priv); -int iwlagn_rxq_stop(struct iwl_priv *priv); int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band); void iwl_setup_rx_handlers(struct iwl_priv *priv); diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index a29fdd43a9f3..8611cf0e5556 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -1231,12 +1231,14 @@ struct iwl_trans; * struct iwl_trans_ops - transport specific operations * @rx_init: inits the rx memory, allocate it if needed + * @rx_stop: stop the rx * @rx_free: frees the rx memory * @tx_init:inits the tx memory, allocate if needed * @tx_free: frees the tx memory */ struct iwl_trans_ops { int (*rx_init)(struct iwl_priv *priv); + int (*rx_stop)(struct iwl_priv *priv); void (*rx_free)(struct iwl_priv *priv); int (*tx_init)(struct iwl_priv *priv); diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.c b/drivers/net/wireless/iwlwifi/iwl-trans.c index 38b43e41d561..c4cd363d81f2 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.c +++ b/drivers/net/wireless/iwlwifi/iwl-trans.c @@ -188,6 +188,15 @@ static void iwl_trans_rx_free(struct iwl_priv *priv) rxq->rb_stts = NULL; } +static int iwl_trans_rx_stop(struct iwl_priv *priv) +{ + + /* stop Rx DMA */ + iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); + return iwl_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG, + FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000); +} + /* TODO:remove this code duplication */ static inline int iwlagn_alloc_dma_ptr(struct iwl_priv *priv, struct iwl_dma_ptr *ptr, size_t size) @@ -490,6 +499,7 @@ error: static const struct iwl_trans_ops trans_ops = { .rx_init = iwl_trans_rx_init, + .rx_stop = iwl_trans_rx_stop, .rx_free = iwl_trans_rx_free, .tx_init = iwl_trans_tx_init, -- 2.30.2