Yogesh Ashok Powar | a5f3905 | 2013-02-15 21:44:30 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Marvell Wireless LAN device driver: 802.11ac |
| 3 | * |
| 4 | * Copyright (C) 2013, Marvell International Ltd. |
| 5 | * |
| 6 | * This software file (the "File") is distributed by Marvell International |
| 7 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 |
| 8 | * (the "License"). You may use, redistribute and/or modify this File in |
| 9 | * accordance with the terms and conditions of the License, a copy of which |
| 10 | * is available by writing to the Free Software Foundation, Inc., |
| 11 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the |
| 12 | * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. |
| 13 | * |
| 14 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE |
| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE |
| 16 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about |
| 17 | * this warranty disclaimer. |
| 18 | */ |
| 19 | |
| 20 | #include "decl.h" |
| 21 | #include "ioctl.h" |
| 22 | #include "fw.h" |
| 23 | #include "main.h" |
| 24 | #include "11ac.h" |
| 25 | |
| 26 | /* This function converts the 2-bit MCS map to the highest long GI |
| 27 | * VHT data rate. |
| 28 | */ |
| 29 | static u16 |
| 30 | mwifiex_convert_mcsmap_to_maxrate(struct mwifiex_private *priv, |
| 31 | u8 bands, u16 mcs_map) |
| 32 | { |
| 33 | u8 i, nss, max_mcs; |
| 34 | u16 max_rate = 0; |
| 35 | u32 usr_vht_cap_info = 0; |
| 36 | struct mwifiex_adapter *adapter = priv->adapter; |
| 37 | /* tables of the MCS map to the highest data rate (in Mbps) |
| 38 | * supported for long GI |
| 39 | */ |
| 40 | u16 max_rate_lgi_80MHZ[8][3] = { |
| 41 | {0x124, 0x15F, 0x186}, /* NSS = 1 */ |
| 42 | {0x249, 0x2BE, 0x30C}, /* NSS = 2 */ |
| 43 | {0x36D, 0x41D, 0x492}, /* NSS = 3 */ |
| 44 | {0x492, 0x57C, 0x618}, /* NSS = 4 */ |
| 45 | {0x5B6, 0x6DB, 0x79E}, /* NSS = 5 */ |
| 46 | {0x6DB, 0x83A, 0x0}, /* NSS = 6 */ |
| 47 | {0x7FF, 0x999, 0xAAA}, /* NSS = 7 */ |
| 48 | {0x924, 0xAF8, 0xC30} /* NSS = 8 */ |
| 49 | }; |
| 50 | u16 max_rate_lgi_160MHZ[8][3] = { |
| 51 | {0x249, 0x2BE, 0x30C}, /* NSS = 1 */ |
| 52 | {0x492, 0x57C, 0x618}, /* NSS = 2 */ |
| 53 | {0x6DB, 0x83A, 0x0}, /* NSS = 3 */ |
| 54 | {0x924, 0xAF8, 0xC30}, /* NSS = 4 */ |
| 55 | {0xB6D, 0xDB6, 0xF3C}, /* NSS = 5 */ |
| 56 | {0xDB6, 0x1074, 0x1248}, /* NSS = 6 */ |
| 57 | {0xFFF, 0x1332, 0x1554}, /* NSS = 7 */ |
| 58 | {0x1248, 0x15F0, 0x1860} /* NSS = 8 */ |
| 59 | }; |
| 60 | |
| 61 | if (bands & BAND_AAC) |
| 62 | usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a; |
| 63 | else |
| 64 | usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg; |
| 65 | |
| 66 | /* find the max NSS supported */ |
| 67 | nss = 0; |
| 68 | for (i = 0; i < 8; i++) { |
| 69 | max_mcs = (mcs_map >> (2 * i)) & 0x3; |
| 70 | if (max_mcs < 3) |
| 71 | nss = i; |
| 72 | } |
| 73 | max_mcs = (mcs_map >> (2 * nss)) & 0x3; |
| 74 | |
| 75 | /* if max_mcs is 3, nss must be 0 (SS = 1). Thus, max mcs is MCS 9 */ |
| 76 | if (max_mcs >= 3) |
| 77 | max_mcs = 2; |
| 78 | |
| 79 | if (GET_VHTCAP_CHWDSET(usr_vht_cap_info)) { |
| 80 | /* support 160 MHz */ |
| 81 | max_rate = max_rate_lgi_160MHZ[nss][max_mcs]; |
| 82 | if (!max_rate) |
| 83 | /* MCS9 is not supported in NSS6 */ |
| 84 | max_rate = max_rate_lgi_160MHZ[nss][max_mcs - 1]; |
| 85 | } else { |
| 86 | max_rate = max_rate_lgi_80MHZ[nss][max_mcs]; |
| 87 | if (!max_rate) |
| 88 | /* MCS9 is not supported in NSS3 */ |
| 89 | max_rate = max_rate_lgi_80MHZ[nss][max_mcs - 1]; |
| 90 | } |
| 91 | |
| 92 | return max_rate; |
| 93 | } |
| 94 | |
| 95 | static void |
| 96 | mwifiex_fill_vht_cap_info(struct mwifiex_private *priv, |
| 97 | struct mwifiex_ie_types_vhtcap *vht_cap, u8 bands) |
| 98 | { |
| 99 | struct mwifiex_adapter *adapter = priv->adapter; |
| 100 | |
| 101 | if (bands & BAND_A) |
| 102 | vht_cap->vht_cap.vht_cap_info = |
| 103 | cpu_to_le32(adapter->usr_dot_11ac_dev_cap_a); |
| 104 | else |
| 105 | vht_cap->vht_cap.vht_cap_info = |
| 106 | cpu_to_le32(adapter->usr_dot_11ac_dev_cap_bg); |
| 107 | } |
| 108 | |
| 109 | static void |
| 110 | mwifiex_fill_vht_cap_tlv(struct mwifiex_private *priv, |
| 111 | struct mwifiex_ie_types_vhtcap *vht_cap, u8 bands) |
| 112 | { |
| 113 | struct mwifiex_adapter *adapter = priv->adapter; |
| 114 | u16 mcs_map_user, mcs_map_resp, mcs_map_result; |
| 115 | u16 mcs_user, mcs_resp, nss, tmp; |
| 116 | |
| 117 | /* Fill VHT cap info */ |
| 118 | mwifiex_fill_vht_cap_info(priv, vht_cap, bands); |
| 119 | |
| 120 | /* rx MCS Set: find the minimum of the user rx mcs and ap rx mcs */ |
| 121 | mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support); |
| 122 | mcs_map_resp = le16_to_cpu(vht_cap->vht_cap.supp_mcs.rx_mcs_map); |
| 123 | mcs_map_result = 0; |
| 124 | |
| 125 | for (nss = 1; nss <= 8; nss++) { |
| 126 | mcs_user = GET_VHTNSSMCS(mcs_map_user, nss); |
| 127 | mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss); |
| 128 | |
| 129 | if ((mcs_user == NO_NSS_SUPPORT) || |
| 130 | (mcs_resp == NO_NSS_SUPPORT)) |
| 131 | SET_VHTNSSMCS(mcs_map_result, nss, NO_NSS_SUPPORT); |
| 132 | else |
| 133 | SET_VHTNSSMCS(mcs_map_result, nss, |
| 134 | min(mcs_user, mcs_resp)); |
| 135 | } |
| 136 | |
| 137 | vht_cap->vht_cap.supp_mcs.rx_mcs_map = cpu_to_le16(mcs_map_result); |
| 138 | |
| 139 | tmp = mwifiex_convert_mcsmap_to_maxrate(priv, bands, mcs_map_result); |
| 140 | vht_cap->vht_cap.supp_mcs.rx_highest = cpu_to_le16(tmp); |
| 141 | |
| 142 | /* tx MCS Set: find the minimum of the user tx mcs and ap tx mcs */ |
| 143 | mcs_map_user = GET_DEVTXMCSMAP(adapter->usr_dot_11ac_mcs_support); |
| 144 | mcs_map_resp = le16_to_cpu(vht_cap->vht_cap.supp_mcs.tx_mcs_map); |
| 145 | mcs_map_result = 0; |
| 146 | |
| 147 | for (nss = 1; nss <= 8; nss++) { |
| 148 | mcs_user = GET_VHTNSSMCS(mcs_map_user, nss); |
| 149 | mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss); |
| 150 | if ((mcs_user == NO_NSS_SUPPORT) || |
| 151 | (mcs_resp == NO_NSS_SUPPORT)) |
| 152 | SET_VHTNSSMCS(mcs_map_result, nss, NO_NSS_SUPPORT); |
| 153 | else |
| 154 | SET_VHTNSSMCS(mcs_map_result, nss, |
| 155 | min(mcs_user, mcs_resp)); |
| 156 | } |
| 157 | |
| 158 | vht_cap->vht_cap.supp_mcs.tx_mcs_map = cpu_to_le16(mcs_map_result); |
| 159 | |
| 160 | tmp = mwifiex_convert_mcsmap_to_maxrate(priv, bands, mcs_map_result); |
| 161 | vht_cap->vht_cap.supp_mcs.tx_highest = cpu_to_le16(tmp); |
| 162 | |
| 163 | return; |
| 164 | } |
| 165 | |
| 166 | int mwifiex_cmd_append_11ac_tlv(struct mwifiex_private *priv, |
| 167 | struct mwifiex_bssdescriptor *bss_desc, |
| 168 | u8 **buffer) |
| 169 | { |
| 170 | struct mwifiex_ie_types_vhtcap *vht_cap; |
| 171 | struct mwifiex_ie_types_oper_mode_ntf *oper_ntf; |
| 172 | struct ieee_types_oper_mode_ntf *ieee_oper_ntf; |
| 173 | struct mwifiex_ie_types_vht_oper *vht_op; |
| 174 | struct mwifiex_adapter *adapter = priv->adapter; |
| 175 | u8 supp_chwd_set; |
| 176 | u32 usr_vht_cap_info; |
| 177 | int ret_len = 0; |
| 178 | |
| 179 | if (bss_desc->bss_band & BAND_A) |
| 180 | usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a; |
| 181 | else |
| 182 | usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg; |
| 183 | |
| 184 | /* VHT Capabilities IE */ |
| 185 | if (bss_desc->bcn_vht_cap) { |
| 186 | vht_cap = (struct mwifiex_ie_types_vhtcap *)*buffer; |
| 187 | memset(vht_cap, 0, sizeof(*vht_cap)); |
| 188 | vht_cap->header.type = cpu_to_le16(WLAN_EID_VHT_CAPABILITY); |
| 189 | vht_cap->header.len = |
| 190 | cpu_to_le16(sizeof(struct ieee80211_vht_cap)); |
| 191 | memcpy((u8 *)vht_cap + sizeof(struct mwifiex_ie_types_header), |
Amitkumar Karwar | d512464 | 2014-03-04 18:43:14 -0800 | [diff] [blame^] | 192 | (u8 *)bss_desc->bcn_vht_cap, |
Yogesh Ashok Powar | a5f3905 | 2013-02-15 21:44:30 -0800 | [diff] [blame] | 193 | le16_to_cpu(vht_cap->header.len)); |
| 194 | |
| 195 | mwifiex_fill_vht_cap_tlv(priv, vht_cap, bss_desc->bss_band); |
| 196 | *buffer += sizeof(*vht_cap); |
| 197 | ret_len += sizeof(*vht_cap); |
| 198 | } |
| 199 | |
| 200 | /* VHT Operation IE */ |
| 201 | if (bss_desc->bcn_vht_oper) { |
Bing Zhao | 0648f3a | 2013-04-19 17:44:43 -0700 | [diff] [blame] | 202 | if (priv->bss_mode == NL80211_IFTYPE_STATION) { |
Yogesh Ashok Powar | a5f3905 | 2013-02-15 21:44:30 -0800 | [diff] [blame] | 203 | vht_op = (struct mwifiex_ie_types_vht_oper *)*buffer; |
| 204 | memset(vht_op, 0, sizeof(*vht_op)); |
| 205 | vht_op->header.type = |
| 206 | cpu_to_le16(WLAN_EID_VHT_OPERATION); |
| 207 | vht_op->header.len = cpu_to_le16(sizeof(*vht_op) - |
| 208 | sizeof(struct mwifiex_ie_types_header)); |
| 209 | memcpy((u8 *)vht_op + |
| 210 | sizeof(struct mwifiex_ie_types_header), |
| 211 | (u8 *)bss_desc->bcn_vht_oper + |
| 212 | sizeof(struct ieee_types_header), |
| 213 | le16_to_cpu(vht_op->header.len)); |
| 214 | |
| 215 | /* negotiate the channel width and central freq |
| 216 | * and keep the central freq as the peer suggests |
| 217 | */ |
| 218 | supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info); |
| 219 | |
| 220 | switch (supp_chwd_set) { |
| 221 | case 0: |
| 222 | vht_op->chan_width = |
| 223 | min_t(u8, IEEE80211_VHT_CHANWIDTH_80MHZ, |
| 224 | bss_desc->bcn_vht_oper->chan_width); |
| 225 | break; |
| 226 | case 1: |
| 227 | vht_op->chan_width = |
| 228 | min_t(u8, IEEE80211_VHT_CHANWIDTH_160MHZ, |
| 229 | bss_desc->bcn_vht_oper->chan_width); |
| 230 | break; |
| 231 | case 2: |
| 232 | vht_op->chan_width = |
| 233 | min_t(u8, IEEE80211_VHT_CHANWIDTH_80P80MHZ, |
| 234 | bss_desc->bcn_vht_oper->chan_width); |
| 235 | break; |
| 236 | default: |
| 237 | vht_op->chan_width = |
| 238 | IEEE80211_VHT_CHANWIDTH_USE_HT; |
| 239 | break; |
| 240 | } |
| 241 | |
| 242 | *buffer += sizeof(*vht_op); |
| 243 | ret_len += sizeof(*vht_op); |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | /* Operating Mode Notification IE */ |
| 248 | if (bss_desc->oper_mode) { |
| 249 | ieee_oper_ntf = bss_desc->oper_mode; |
| 250 | oper_ntf = (void *)*buffer; |
| 251 | memset(oper_ntf, 0, sizeof(*oper_ntf)); |
| 252 | oper_ntf->header.type = cpu_to_le16(WLAN_EID_OPMODE_NOTIF); |
| 253 | oper_ntf->header.len = cpu_to_le16(sizeof(u8)); |
| 254 | oper_ntf->oper_mode = ieee_oper_ntf->oper_mode; |
| 255 | *buffer += sizeof(*oper_ntf); |
| 256 | ret_len += sizeof(*oper_ntf); |
| 257 | } |
| 258 | |
| 259 | return ret_len; |
| 260 | } |
Yogesh Ashok Powar | 83c78da | 2013-03-18 20:06:03 -0700 | [diff] [blame] | 261 | |
| 262 | int mwifiex_cmd_11ac_cfg(struct mwifiex_private *priv, |
| 263 | struct host_cmd_ds_command *cmd, u16 cmd_action, |
| 264 | struct mwifiex_11ac_vht_cfg *cfg) |
| 265 | { |
| 266 | struct host_cmd_11ac_vht_cfg *vhtcfg = &cmd->params.vht_cfg; |
| 267 | |
| 268 | cmd->command = cpu_to_le16(HostCmd_CMD_11AC_CFG); |
| 269 | cmd->size = cpu_to_le16(sizeof(struct host_cmd_11ac_vht_cfg) + |
| 270 | S_DS_GEN); |
| 271 | vhtcfg->action = cpu_to_le16(cmd_action); |
| 272 | vhtcfg->band_config = cfg->band_config; |
| 273 | vhtcfg->misc_config = cfg->misc_config; |
| 274 | vhtcfg->cap_info = cpu_to_le32(cfg->cap_info); |
| 275 | vhtcfg->mcs_tx_set = cpu_to_le32(cfg->mcs_tx_set); |
| 276 | vhtcfg->mcs_rx_set = cpu_to_le32(cfg->mcs_rx_set); |
| 277 | |
| 278 | return 0; |
| 279 | } |
Avinash Patil | 2b6254d | 2013-03-27 19:10:32 -0700 | [diff] [blame] | 280 | |
| 281 | /* This function initializes the BlockACK setup information for given |
| 282 | * mwifiex_private structure for 11ac enabled networks. |
| 283 | */ |
| 284 | void mwifiex_set_11ac_ba_params(struct mwifiex_private *priv) |
| 285 | { |
| 286 | priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT; |
| 287 | |
| 288 | if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { |
| 289 | priv->add_ba_param.tx_win_size = |
| 290 | MWIFIEX_11AC_UAP_AMPDU_DEF_TXWINSIZE; |
| 291 | priv->add_ba_param.rx_win_size = |
| 292 | MWIFIEX_11AC_UAP_AMPDU_DEF_RXWINSIZE; |
| 293 | } else { |
| 294 | priv->add_ba_param.tx_win_size = |
| 295 | MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE; |
| 296 | priv->add_ba_param.rx_win_size = |
| 297 | MWIFIEX_11AC_STA_AMPDU_DEF_RXWINSIZE; |
| 298 | } |
| 299 | |
| 300 | return; |
| 301 | } |