From e4e58cf8cc646d93de852f32f972448a95387c60 Mon Sep 17 00:00:00 2001 From: "Zhu, Yi" Date: Fri, 7 Nov 2008 09:58:46 -0800 Subject: [PATCH] iwlwifi: use Rx single frame mode (one Rx frame per RB) The RCSR default value for single frame mode is off (a RB contains more than one frames). But the driver assumes single frame mode apparently. This patch enables single frame mode for the hardware. It also adds a BUG_ON to make sure the allocated skb satisfies the hardware alignment requirement and removes a useless check. Signed-off-by: Zhu Yi Signed-off-by: Reinette Chatre Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-fh.h | 2 ++ drivers/net/wireless/iwlwifi/iwl-rx.c | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-fh.h b/drivers/net/wireless/iwlwifi/iwl-fh.h index 2c5f919..e46300c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fh.h +++ b/drivers/net/wireless/iwlwifi/iwl-fh.h @@ -266,6 +266,8 @@ #define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_NO_INT_VAL (0x00000000) #define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL (0x00001000) +#define FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME (0x00008000) + /** * Rx Shared Status Registers (RSSR) diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c index 48d5574..876afd4 100644 --- a/drivers/net/wireless/iwlwifi/iwl-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-rx.c @@ -218,8 +218,7 @@ int iwl_rx_queue_restock(struct iwl_priv *priv) /* If we've added more space for the firmware to place data, tell it. * Increment device's write pointer in multiples of 8. */ - if ((write != (rxq->write & ~0x7)) - || (abs(rxq->write - rxq->read) > 7)) { + if (write != (rxq->write & ~0x7)) { spin_lock_irqsave(&rxq->lock, flags); rxq->need_update = 1; spin_unlock_irqrestore(&rxq->lock, flags); @@ -440,6 +439,7 @@ int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq) FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL | FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY | FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL | + FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME | rb_size| (rb_timeout << FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS)| (rfdnlog << FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS)); -- 1.8.2.3