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Commit b18cdfdb authored Feb 29, 2016 by Jes Sorensen Committed by Kalle Valo Mar 10, 2016

rtl8xxxu: Handle 8723bu style rx descriptors



This adds code to parse the new RX descriptor format used by the
8723bu/8192eu parts.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

parent a6c80d21

drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c

+95 −30

Original line number	Diff line number	Diff line
		@@ -6730,42 +6730,62 @@ static void rtl8xxxu_rx_urb_work(struct work_struct *work)
		}
		}

		static void rtl8xxxu_rx_complete(struct urb *urb)
		static int rtl8723au_parse_rx_desc(struct rtl8xxxu_priv *priv,
		struct sk_buff *skb,
		struct ieee80211_rx_status *rx_status)
		{
		struct rtl8xxxu_rx_urb *rx_urb =
		container_of(urb, struct rtl8xxxu_rx_urb, urb);
		struct ieee80211_hw *hw = rx_urb->hw;
		struct rtl8xxxu_priv *priv = hw->priv;
		struct sk_buff skb = (struct sk_buff )urb->context;
		struct rtl8xxxu_rx_desc rx_desc = (struct rtl8xxxu_rx_desc )skb->data;
		struct rtl8723au_phy_stats *phy_stats;
		struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
		struct device *dev = &priv->udev->dev;
		__le32 _rx_desc_le = (__le32 )skb->data;
		u32 _rx_desc = (u32 )skb->data;
		int drvinfo_sz, desc_shift, i;
		int drvinfo_sz, desc_shift;

		for (i = 0; i < (sizeof(struct rtl8xxxu_rx_desc) / sizeof(u32)); i++)
		_rx_desc[i] = le32_to_cpu(_rx_desc_le[i]);
		skb_pull(skb, sizeof(struct rtl8xxxu_rx_desc));

		phy_stats = (struct rtl8723au_phy_stats *)skb->data;

		drvinfo_sz = rx_desc->drvinfo_sz * 8;
		desc_shift = rx_desc->shift;
		skb_put(skb, urb->actual_length);
		skb_pull(skb, drvinfo_sz + desc_shift);

		if (urb->status == 0) {
		skb_pull(skb, sizeof(struct rtl8xxxu_rx_desc));
		phy_stats = (struct rtl8723au_phy_stats *)skb->data;
		if (rx_desc->phy_stats)
		rtl8xxxu_rx_parse_phystats(priv, rx_status, rx_desc, phy_stats);

		skb_pull(skb, drvinfo_sz + desc_shift);
		rx_status->mactime = le32_to_cpu(rx_desc->tsfl);
		rx_status->flag \|= RX_FLAG_MACTIME_START;

		memset(rx_status, 0, sizeof(struct ieee80211_rx_status));
		if (!rx_desc->swdec)
		rx_status->flag \|= RX_FLAG_DECRYPTED;
		if (rx_desc->crc32)
		rx_status->flag \|= RX_FLAG_FAILED_FCS_CRC;
		if (rx_desc->bw)
		rx_status->flag \|= RX_FLAG_40MHZ;

		if (rx_desc->phy_stats)
		rtl8xxxu_rx_parse_phystats(priv, rx_status,
		rx_desc, phy_stats);
		if (rx_desc->rxht) {
		rx_status->flag \|= RX_FLAG_HT;
		rx_status->rate_idx = rx_desc->rxmcs - DESC_RATE_MCS0;
		} else {
		rx_status->rate_idx = rx_desc->rxmcs;
		}

		rx_status->freq = hw->conf.chandef.chan->center_freq;
		rx_status->band = hw->conf.chandef.chan->band;
		return RX_TYPE_DATA_PKT;
		}

		static int rtl8723bu_parse_rx_desc(struct rtl8xxxu_priv *priv,
		struct sk_buff *skb,
		struct ieee80211_rx_status *rx_status)
		{
		struct rtl8723bu_rx_desc *rx_desc =
		(struct rtl8723bu_rx_desc *)skb->data;
		struct rtl8723au_phy_stats *phy_stats;
		int drvinfo_sz, desc_shift;
		int rx_type;

		skb_pull(skb, sizeof(struct rtl8723bu_rx_desc));

		phy_stats = (struct rtl8723au_phy_stats *)skb->data;

		drvinfo_sz = rx_desc->drvinfo_sz * 8;
		desc_shift = rx_desc->shift;
		skb_pull(skb, drvinfo_sz + desc_shift);

		rx_status->mactime = le32_to_cpu(rx_desc->tsfl);
		rx_status->flag \|= RX_FLAG_MACTIME_START;
		@@ -6777,14 +6797,55 @@ static void rtl8xxxu_rx_complete(struct urb *urb)
		if (rx_desc->bw)
		rx_status->flag \|= RX_FLAG_40MHZ;

		if (rx_desc->rxht) {
		if (rx_desc->rxmcs >= DESC_RATE_MCS0) {
		rx_status->flag \|= RX_FLAG_HT;
		rx_status->rate_idx = rx_desc->rxmcs - DESC_RATE_MCS0;
		} else {
		rx_status->rate_idx = rx_desc->rxmcs;
		}

		if (rx_desc->rpt_sel) {
		struct device *dev = &priv->udev->dev;
		dev_dbg(dev, "%s: C2H packet\n", __func__);
		rx_type = RX_TYPE_C2H;
		} else {
		rx_type = RX_TYPE_DATA_PKT;
		}

		return rx_type;
		}

		static void rtl8xxxu_rx_complete(struct urb *urb)
		{
		struct rtl8xxxu_rx_urb *rx_urb =
		container_of(urb, struct rtl8xxxu_rx_urb, urb);
		struct ieee80211_hw *hw = rx_urb->hw;
		struct rtl8xxxu_priv *priv = hw->priv;
		struct sk_buff skb = (struct sk_buff )urb->context;
		struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
		struct device *dev = &priv->udev->dev;
		__le32 _rx_desc_le = (__le32 )skb->data;
		u32 _rx_desc = (u32 )skb->data;
		int rx_type, i;

		for (i = 0; i < (sizeof(struct rtl8xxxu_rx_desc) / sizeof(u32)); i++)
		_rx_desc[i] = le32_to_cpu(_rx_desc_le[i]);

		skb_put(skb, urb->actual_length);

		if (urb->status == 0) {
		memset(rx_status, 0, sizeof(struct ieee80211_rx_status));

		rx_type = priv->fops->parse_rx_desc(priv, skb, rx_status);

		rx_status->freq = hw->conf.chandef.chan->center_freq;
		rx_status->band = hw->conf.chandef.chan->band;

		if (rx_type == RX_TYPE_DATA_PKT)
		ieee80211_rx_irqsafe(hw, skb);
		else
		dev_kfree_skb(skb);

		skb = NULL;
		rx_urb->urb.context = NULL;
		rtl8xxxu_queue_rx_urb(priv, rx_urb);
		@@ -7564,6 +7625,7 @@ static struct rtl8xxxu_fileops rtl8723au_fops = {
		.llt_init = rtl8xxxu_init_llt_table,
		.phy_iq_calibrate = rtl8723au_phy_iq_calibrate,
		.config_channel = rtl8723au_config_channel,
		.parse_rx_desc = rtl8723au_parse_rx_desc,
		.writeN_block_size = 1024,
		.mbox_ext_reg = REG_HMBOX_EXT_0,
		.mbox_ext_width = 2,
		@@ -7582,6 +7644,7 @@ static struct rtl8xxxu_fileops rtl8723bu_fops = {
		.phy_iq_calibrate = rtl8723bu_phy_iq_calibrate,
		.config_channel = rtl8723bu_config_channel,
		.init_bt = rtl8723bu_init_bt,
		.parse_rx_desc = rtl8723bu_parse_rx_desc,
		.writeN_block_size = 1024,
		.mbox_ext_reg = REG_HMBOX_EXT0_8723B,
		.mbox_ext_width = 4,
		@@ -7601,6 +7664,7 @@ static struct rtl8xxxu_fileops rtl8192cu_fops = {
		.llt_init = rtl8xxxu_init_llt_table,
		.phy_iq_calibrate = rtl8723au_phy_iq_calibrate,
		.config_channel = rtl8723au_config_channel,
		.parse_rx_desc = rtl8723au_parse_rx_desc,
		.writeN_block_size = 128,
		.mbox_ext_reg = REG_HMBOX_EXT_0,
		.mbox_ext_width = 2,
		@@ -7619,6 +7683,7 @@ static struct rtl8xxxu_fileops rtl8192eu_fops = {
		.llt_init = rtl8xxxu_auto_llt_table,
		.phy_iq_calibrate = rtl8723bu_phy_iq_calibrate,
		.config_channel = rtl8723bu_config_channel,
		.parse_rx_desc = rtl8723bu_parse_rx_desc,
		.writeN_block_size = 128,
		.mbox_ext_reg = REG_HMBOX_EXT0_8723B,
		.mbox_ext_width = 4,

drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -61,6 +61,12 @@
		#define EFUSE_BT_MAP_LEN_8723A 1024
		#define EFUSE_MAX_WORD_UNIT 4

		enum rtl8xxxu_rx_type {
		RX_TYPE_DATA_PKT = 0,
		RX_TYPE_C2H = 1,
		RX_TYPE_ERROR = -1
		};

		struct rtl8xxxu_rx_desc {
		#ifdef __LITTLE_ENDIAN
		u32 pktlen:14;
		@@ -1010,6 +1016,8 @@ struct rtl8xxxu_fileops {
		void (phy_iq_calibrate) (struct rtl8xxxu_priv priv);
		void (config_channel) (struct ieee80211_hw hw);
		void (init_bt) (struct rtl8xxxu_priv priv);
		int (parse_rx_desc) (struct rtl8xxxu_priv priv, struct sk_buff *skb,
		struct ieee80211_rx_status *rx_status);
		int writeN_block_size;
		u16 mbox_ext_reg;
		char mbox_ext_width;