mwifiex: add 802.11AC support

For STA mode, collect VHT realated IEs from the Beacons or Probe
Responses and append similar VHT related IEs to association
requests.

For AP mode, get VHT related capability information and share it
with cfg80211 at the time of wiphy register. This information is
further used by cfg80211 and hostapd to start an AP with 802.11AC
support.

Currently only 8897 supports 802.11AC.

Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Frank Huang <frankh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 157 insertions, 2 deletions

diff --git a/drivers/net/wireless/mwifiex/cfp.c b/drivers/net/wireless/mwifiex/cfp.c
index f69300f93f42..988552dece75 100644
--- a/drivers/net/wireless/mwifiex/cfp.c
+++ b/drivers/net/wireless/mwifiex/cfp.c
@@ -106,8 +106,8 @@ u8 *mwifiex_11d_code_2_region(u8 code)
  * This function maps an index in supported rates table into
  * the corresponding data rate.
  */
-u32 mwifiex_index_to_data_rate(struct mwifiex_private *priv, u8 index,
-							u8 ht_info)
+u32 mwifiex_index_to_acs_data_rate(struct mwifiex_private *priv,
+				   u8 index, u8 ht_info)
 {
 	/*
 	 * For every mcs_rate line, the first 8 bytes are for stream 1x1,
@@ -130,10 +130,155 @@ u32 mwifiex_index_to_data_rate(struct mwifiex_private *priv, u8 index,
 		{ 0x0e, 0x1c, 0x2b, 0x39, 0x56, 0x73, 0x82, 0x90,
 		  0x1c, 0x39, 0x56, 0x73, 0xad, 0xe7, 0x104, 0x120 }
 	};
+	/* AC rates */
+	u16 ac_mcs_rate_nss1[8][10] = {
+		/* LG 160M */
+		{ 0x75, 0xEA, 0x15F, 0x1D4, 0x2BE, 0x3A8, 0x41D,
+		  0x492, 0x57C, 0x618 },
+
+		/* SG 160M */
+		{ 0x82, 0x104, 0x186, 0x208, 0x30C, 0x410, 0x492,
+		  0x514, 0x618, 0x6C6 },
+
+		/* LG 80M */
+		{ 0x3B, 0x75, 0xB0, 0xEA, 0x15F, 0x1D4, 0x20F,
+		  0x249, 0x2BE, 0x30C },
+
+		/* SG 80M */
+		{ 0x41, 0x82, 0xC3, 0x104, 0x186, 0x208, 0x249,
+		  0x28A, 0x30C, 0x363 },
+
+		/* LG 40M */
+		{ 0x1B, 0x36, 0x51, 0x6C, 0xA2, 0xD8, 0xF3,
+		  0x10E, 0x144, 0x168 },
+
+		/* SG 40M */
+		{ 0x1E, 0x3C, 0x5A, 0x78, 0xB4, 0xF0, 0x10E,
+		  0x12C, 0x168, 0x190 },
+
+		/* LG 20M */
+		{ 0xD, 0x1A, 0x27, 0x34, 0x4E, 0x68, 0x75, 0x82, 0x9C, 0x00 },
+
+		/* SG 20M */
+		{ 0xF, 0x1D, 0x2C, 0x3A, 0x57, 0x74, 0x82, 0x91, 0xAE, 0x00 },
+	};
+	/* NSS2 note: the value in the table is 2 multiplier of the actual
+	 * rate
+	 */
+	u16 ac_mcs_rate_nss2[8][10] = {
+		/* LG 160M */
+		{ 0xEA, 0x1D4, 0x2BE, 0x3A8, 0x57C, 0x750, 0x83A,
+		  0x924, 0xAF8, 0xC30 },
+
+		/* SG 160M */
+		{ 0x104, 0x208, 0x30C, 0x410, 0x618, 0x820, 0x924,
+		  0xA28, 0xC30, 0xD8B },
+
+		/* LG 80M */
+		{ 0x75, 0xEA, 0x15F, 0x1D4, 0x2BE, 0x3A8, 0x41D,
+		  0x492, 0x57C, 0x618 },
+
+		/* SG 80M */
+		{ 0x82, 0x104, 0x186, 0x208, 0x30C, 0x410, 0x492,
+		  0x514, 0x618, 0x6C6 },
+
+		/* LG 40M */
+		{ 0x36, 0x6C, 0xA2, 0xD8, 0x144, 0x1B0, 0x1E6,
+		  0x21C, 0x288, 0x2D0 },
+
+		/* SG 40M */
+		{ 0x3C, 0x78, 0xB4, 0xF0, 0x168, 0x1E0, 0x21C,
+		  0x258, 0x2D0, 0x320 },
+
+		/* LG 20M */
+		{ 0x1A, 0x34, 0x4A, 0x68, 0x9C, 0xD0, 0xEA, 0x104,
+		  0x138, 0x00 },
+
+		/* SG 20M */
+		{ 0x1D, 0x3A, 0x57, 0x74, 0xAE, 0xE6, 0x104, 0x121,
+		  0x15B, 0x00 },
+	};
+	u32 rate = 0;
+	u8 mcs_index = 0;
+	u8 bw = 0;
+	u8 gi = 0;
+
+	if ((ht_info & 0x3) == MWIFIEX_RATE_FORMAT_VHT) {
+		mcs_index = min(index & 0xF, 9);
+
+		/* 20M: bw=0, 40M: bw=1, 80M: bw=2, 160M: bw=3 */
+		bw = (ht_info & 0xC) >> 2;
+
+		/* LGI: gi =0, SGI: gi = 1 */
+		gi = (ht_info & 0x10) >> 4;
+
+		if ((index >> 4) == 1)	/* NSS = 2 */
+			rate = ac_mcs_rate_nss2[2 * (3 - bw) + gi][mcs_index];
+		else			/* NSS = 1 */
+			rate = ac_mcs_rate_nss1[2 * (3 - bw) + gi][mcs_index];
+	} else if ((ht_info & 0x3) == MWIFIEX_RATE_FORMAT_HT) {
+		/* 20M: bw=0, 40M: bw=1 */
+		bw = (ht_info & 0xC) >> 2;
+
+		/* LGI: gi =0, SGI: gi = 1 */
+		gi = (ht_info & 0x10) >> 4;
+
+		if (index == MWIFIEX_RATE_BITMAP_MCS0) {
+			if (gi == 1)
+				rate = 0x0D;    /* MCS 32 SGI rate */
+			else
+				rate = 0x0C;    /* MCS 32 LGI rate */
+		} else if (index < 16) {
+			if ((bw == 1) || (bw == 0))
+				rate = mcs_rate[2 * (1 - bw) + gi][index];
+			else
+				rate = mwifiex_data_rates[0];
+		} else {
+			rate = mwifiex_data_rates[0];
+		}
+	} else {
+		/* 11n non-HT rates */
+		if (index >= MWIFIEX_SUPPORTED_RATES_EXT)
+			index = 0;
+		rate = mwifiex_data_rates[index];
+	}
+
+	return rate;
+}
+
+/* This function maps an index in supported rates table into
+ * the corresponding data rate.
+ */
+u32 mwifiex_index_to_data_rate(struct mwifiex_private *priv,
+			       u8 index, u8 ht_info)
+{
+	/* For every mcs_rate line, the first 8 bytes are for stream 1x1,
+	 * and all 16 bytes are for stream 2x2.
+	 */
+	u16  mcs_rate[4][16] = {
+		/* LGI 40M */
+		{ 0x1b, 0x36, 0x51, 0x6c, 0xa2, 0xd8, 0xf3, 0x10e,
+		  0x36, 0x6c, 0xa2, 0xd8, 0x144, 0x1b0, 0x1e6, 0x21c },
+
+		/* SGI 40M */
+		{ 0x1e, 0x3c, 0x5a, 0x78, 0xb4, 0xf0, 0x10e, 0x12c,
+		  0x3c, 0x78, 0xb4, 0xf0, 0x168, 0x1e0, 0x21c, 0x258 },
+
+		/* LGI 20M */
+		{ 0x0d, 0x1a, 0x27, 0x34, 0x4e, 0x68, 0x75, 0x82,
+		  0x1a, 0x34, 0x4e, 0x68, 0x9c, 0xd0, 0xea, 0x104 },
+
+		/* SGI 20M */
+		{ 0x0e, 0x1c, 0x2b, 0x39, 0x56, 0x73, 0x82, 0x90,
+		  0x1c, 0x39, 0x56, 0x73, 0xad, 0xe7, 0x104, 0x120 }
+	};
 	u32 mcs_num_supp =
 		(priv->adapter->hw_dev_mcs_support == HT_STREAM_2X2) ? 16 : 8;
 	u32 rate;
 
+	if (priv->adapter->is_hw_11ac_capable)
+		return mwifiex_index_to_acs_data_rate(priv, index, ht_info);
+
 	if (ht_info & BIT(0)) {
 		if (index == MWIFIEX_RATE_BITMAP_MCS0) {
 			if (ht_info & BIT(2))
@@ -269,6 +414,7 @@ u32 mwifiex_get_supported_rates(struct mwifiex_private *priv, u8 *rates)
 {
 	u32 k = 0;
 	struct mwifiex_adapter *adapter = priv->adapter;
+
 	if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 		switch (adapter->config_bands) {
 		case BAND_B:
@@ -279,6 +425,7 @@ u32 mwifiex_get_supported_rates(struct mwifiex_private *priv, u8 *rates)
 			break;
 		case BAND_G:
 		case BAND_G | BAND_GN:
+		case BAND_G | BAND_GN | BAND_GAC:
 			dev_dbg(adapter->dev, "info: infra band=%d "
 				"supported_rates_g\n", adapter->config_bands);
 			k = mwifiex_copy_rates(rates, k, supported_rates_g,
@@ -288,7 +435,11 @@ u32 mwifiex_get_supported_rates(struct mwifiex_private *priv, u8 *rates)
 		case BAND_A | BAND_B | BAND_G:
 		case BAND_A | BAND_B:
 		case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN:
+		case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN | BAND_AAC:
+		case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN |
+		     BAND_AAC | BAND_GAC:
 		case BAND_B | BAND_G | BAND_GN:
+		case BAND_B | BAND_G | BAND_GN | BAND_GAC:
 			dev_dbg(adapter->dev, "info: infra band=%d "
 				"supported_rates_bg\n", adapter->config_bands);
 			k = mwifiex_copy_rates(rates, k, supported_rates_bg,
@@ -301,14 +452,18 @@ u32 mwifiex_get_supported_rates(struct mwifiex_private *priv, u8 *rates)
 			k = mwifiex_copy_rates(rates, k, supported_rates_a,
 					       sizeof(supported_rates_a));
 			break;
+		case BAND_AN:
 		case BAND_A | BAND_AN:
+		case BAND_A | BAND_AN | BAND_AAC:
 		case BAND_A | BAND_G | BAND_AN | BAND_GN:
+		case BAND_A | BAND_G | BAND_AN | BAND_GN | BAND_AAC:
 			dev_dbg(adapter->dev, "info: infra band=%d "
 				"supported_rates_a\n", adapter->config_bands);
 			k = mwifiex_copy_rates(rates, k, supported_rates_a,
 					       sizeof(supported_rates_a));
 			break;
 		case BAND_GN:
+		case BAND_GN | BAND_GAC:
 			dev_dbg(adapter->dev, "info: infra band=%d "
 				"supported_rates_n\n", adapter->config_bands);
 			k = mwifiex_copy_rates(rates, k, supported_rates_n,