rtl8xxxu: Make DMA aggregation optional by setting a module parameter
Let the default to off until we have more data on the right default tuning values. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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@ -44,6 +44,7 @@
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int rtl8xxxu_debug = RTL8XXXU_DEBUG_EFUSE;
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int rtl8xxxu_debug = RTL8XXXU_DEBUG_EFUSE;
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static bool rtl8xxxu_ht40_2g;
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static bool rtl8xxxu_ht40_2g;
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static bool rtl8xxxu_dma_aggregation;
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MODULE_AUTHOR("Jes Sorensen <Jes.Sorensen@redhat.com>");
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MODULE_AUTHOR("Jes Sorensen <Jes.Sorensen@redhat.com>");
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MODULE_DESCRIPTION("RTL8XXXu USB mac80211 Wireless LAN Driver");
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MODULE_DESCRIPTION("RTL8XXXu USB mac80211 Wireless LAN Driver");
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@ -62,6 +63,8 @@ module_param_named(debug, rtl8xxxu_debug, int, 0600);
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MODULE_PARM_DESC(debug, "Set debug mask");
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MODULE_PARM_DESC(debug, "Set debug mask");
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module_param_named(ht40_2g, rtl8xxxu_ht40_2g, bool, 0600);
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module_param_named(ht40_2g, rtl8xxxu_ht40_2g, bool, 0600);
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MODULE_PARM_DESC(ht40_2g, "Enable HT40 support on the 2.4GHz band");
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MODULE_PARM_DESC(ht40_2g, "Enable HT40 support on the 2.4GHz band");
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module_param_named(dma_aggregation, rtl8xxxu_dma_aggregation, bool, 0600);
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MODULE_PARM_DESC(dma_aggregation, "Enable DMA packet aggregation");
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#define USB_VENDOR_ID_REALTEK 0x0bda
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#define USB_VENDOR_ID_REALTEK 0x0bda
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#define RTL8XXXU_RX_URBS 32
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#define RTL8XXXU_RX_URBS 32
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@ -4411,14 +4414,18 @@ void rtl8xxxu_gen1_init_aggregation(struct rtl8xxxu_priv *priv)
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usb_spec = rtl8xxxu_read8(priv, REG_USB_SPECIAL_OPTION);
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usb_spec = rtl8xxxu_read8(priv, REG_USB_SPECIAL_OPTION);
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usb_spec &= ~USB_SPEC_USB_AGG_ENABLE;
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usb_spec &= ~USB_SPEC_USB_AGG_ENABLE;
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rtl8xxxu_write8(priv, REG_USB_SPECIAL_OPTION, usb_spec);
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agg_ctrl = rtl8xxxu_read8(priv, REG_TRXDMA_CTRL);
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agg_ctrl = rtl8xxxu_read8(priv, REG_TRXDMA_CTRL);
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agg_ctrl &= ~TRXDMA_CTRL_RXDMA_AGG_EN;
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agg_ctrl &= ~TRXDMA_CTRL_RXDMA_AGG_EN;
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agg_ctrl |= TRXDMA_CTRL_RXDMA_AGG_EN;
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if (!rtl8xxxu_dma_aggregation) {
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rtl8xxxu_write8(priv, REG_TRXDMA_CTRL, agg_ctrl);
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return;
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}
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agg_ctrl |= TRXDMA_CTRL_RXDMA_AGG_EN;
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rtl8xxxu_write8(priv, REG_TRXDMA_CTRL, agg_ctrl);
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rtl8xxxu_write8(priv, REG_TRXDMA_CTRL, agg_ctrl);
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rtl8xxxu_write8(priv, REG_USB_SPECIAL_OPTION, usb_spec);
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/*
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/*
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* The number of packets we can take looks to be buffer size / 512
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* The number of packets we can take looks to be buffer size / 512
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