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a5f39056 YAP |
1 | /* |
2 | * Marvell Wireless LAN device driver: 802.11ac | |
3 | * | |
65da33f5 | 4 | * Copyright (C) 2013-2014, Marvell International Ltd. |
a5f39056 YAP |
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 | ||
89467d8c BZ |
26 | /* Tables of the MCS map to the highest data rate (in Mbps) supported |
27 | * for long GI. | |
28 | */ | |
29 | static const u16 max_rate_lgi_80MHZ[8][3] = { | |
30 | {0x124, 0x15F, 0x186}, /* NSS = 1 */ | |
31 | {0x249, 0x2BE, 0x30C}, /* NSS = 2 */ | |
32 | {0x36D, 0x41D, 0x492}, /* NSS = 3 */ | |
33 | {0x492, 0x57C, 0x618}, /* NSS = 4 */ | |
34 | {0x5B6, 0x6DB, 0x79E}, /* NSS = 5 */ | |
35 | {0x6DB, 0x83A, 0x0}, /* NSS = 6 */ | |
36 | {0x7FF, 0x999, 0xAAA}, /* NSS = 7 */ | |
37 | {0x924, 0xAF8, 0xC30} /* NSS = 8 */ | |
38 | }; | |
39 | ||
40 | static const u16 max_rate_lgi_160MHZ[8][3] = { | |
41 | {0x249, 0x2BE, 0x30C}, /* NSS = 1 */ | |
42 | {0x492, 0x57C, 0x618}, /* NSS = 2 */ | |
43 | {0x6DB, 0x83A, 0x0}, /* NSS = 3 */ | |
44 | {0x924, 0xAF8, 0xC30}, /* NSS = 4 */ | |
45 | {0xB6D, 0xDB6, 0xF3C}, /* NSS = 5 */ | |
46 | {0xDB6, 0x1074, 0x1248}, /* NSS = 6 */ | |
47 | {0xFFF, 0x1332, 0x1554}, /* NSS = 7 */ | |
48 | {0x1248, 0x15F0, 0x1860} /* NSS = 8 */ | |
49 | }; | |
50 | ||
a5f39056 YAP |
51 | /* This function converts the 2-bit MCS map to the highest long GI |
52 | * VHT data rate. | |
53 | */ | |
54 | static u16 | |
55 | mwifiex_convert_mcsmap_to_maxrate(struct mwifiex_private *priv, | |
56 | u8 bands, u16 mcs_map) | |
57 | { | |
406d702b | 58 | u8 i, nss, mcs; |
a5f39056 YAP |
59 | u16 max_rate = 0; |
60 | u32 usr_vht_cap_info = 0; | |
61 | struct mwifiex_adapter *adapter = priv->adapter; | |
a5f39056 YAP |
62 | |
63 | if (bands & BAND_AAC) | |
64 | usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a; | |
65 | else | |
66 | usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg; | |
67 | ||
68 | /* find the max NSS supported */ | |
406d702b BZ |
69 | nss = 1; |
70 | for (i = 1; i <= 8; i++) { | |
71 | mcs = GET_VHTNSSMCS(mcs_map, i); | |
72 | if (mcs < IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
a5f39056 YAP |
73 | nss = i; |
74 | } | |
406d702b | 75 | mcs = GET_VHTNSSMCS(mcs_map, nss); |
a5f39056 | 76 | |
406d702b BZ |
77 | /* if mcs is 3, nss must be 1 (NSS = 1). Default mcs to MCS 0~9 */ |
78 | if (mcs == IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
79 | mcs = IEEE80211_VHT_MCS_SUPPORT_0_9; | |
a5f39056 YAP |
80 | |
81 | if (GET_VHTCAP_CHWDSET(usr_vht_cap_info)) { | |
82 | /* support 160 MHz */ | |
406d702b | 83 | max_rate = max_rate_lgi_160MHZ[nss - 1][mcs]; |
a5f39056 YAP |
84 | if (!max_rate) |
85 | /* MCS9 is not supported in NSS6 */ | |
406d702b | 86 | max_rate = max_rate_lgi_160MHZ[nss - 1][mcs - 1]; |
a5f39056 | 87 | } else { |
406d702b | 88 | max_rate = max_rate_lgi_80MHZ[nss - 1][mcs]; |
a5f39056 YAP |
89 | if (!max_rate) |
90 | /* MCS9 is not supported in NSS3 */ | |
406d702b | 91 | max_rate = max_rate_lgi_80MHZ[nss - 1][mcs - 1]; |
a5f39056 YAP |
92 | } |
93 | ||
94 | return max_rate; | |
95 | } | |
96 | ||
97 | static void | |
98 | mwifiex_fill_vht_cap_info(struct mwifiex_private *priv, | |
9ed230bc | 99 | struct ieee80211_vht_cap *vht_cap, u8 bands) |
a5f39056 YAP |
100 | { |
101 | struct mwifiex_adapter *adapter = priv->adapter; | |
102 | ||
103 | if (bands & BAND_A) | |
9ed230bc | 104 | vht_cap->vht_cap_info = |
a5f39056 YAP |
105 | cpu_to_le32(adapter->usr_dot_11ac_dev_cap_a); |
106 | else | |
9ed230bc | 107 | vht_cap->vht_cap_info = |
a5f39056 YAP |
108 | cpu_to_le32(adapter->usr_dot_11ac_dev_cap_bg); |
109 | } | |
110 | ||
5f6d5983 AP |
111 | void mwifiex_fill_vht_cap_tlv(struct mwifiex_private *priv, |
112 | struct ieee80211_vht_cap *vht_cap, u8 bands) | |
a5f39056 YAP |
113 | { |
114 | struct mwifiex_adapter *adapter = priv->adapter; | |
115 | u16 mcs_map_user, mcs_map_resp, mcs_map_result; | |
116 | u16 mcs_user, mcs_resp, nss, tmp; | |
117 | ||
118 | /* Fill VHT cap info */ | |
119 | mwifiex_fill_vht_cap_info(priv, vht_cap, bands); | |
120 | ||
121 | /* rx MCS Set: find the minimum of the user rx mcs and ap rx mcs */ | |
122 | mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support); | |
9ed230bc | 123 | mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map); |
a5f39056 YAP |
124 | mcs_map_result = 0; |
125 | ||
126 | for (nss = 1; nss <= 8; nss++) { | |
127 | mcs_user = GET_VHTNSSMCS(mcs_map_user, nss); | |
128 | mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss); | |
129 | ||
7abf4129 BZ |
130 | if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) || |
131 | (mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED)) | |
132 | SET_VHTNSSMCS(mcs_map_result, nss, | |
133 | IEEE80211_VHT_MCS_NOT_SUPPORTED); | |
a5f39056 YAP |
134 | else |
135 | SET_VHTNSSMCS(mcs_map_result, nss, | |
136 | min(mcs_user, mcs_resp)); | |
137 | } | |
138 | ||
9ed230bc | 139 | vht_cap->supp_mcs.rx_mcs_map = cpu_to_le16(mcs_map_result); |
a5f39056 YAP |
140 | |
141 | tmp = mwifiex_convert_mcsmap_to_maxrate(priv, bands, mcs_map_result); | |
9ed230bc | 142 | vht_cap->supp_mcs.rx_highest = cpu_to_le16(tmp); |
a5f39056 YAP |
143 | |
144 | /* tx MCS Set: find the minimum of the user tx mcs and ap tx mcs */ | |
145 | mcs_map_user = GET_DEVTXMCSMAP(adapter->usr_dot_11ac_mcs_support); | |
9ed230bc | 146 | mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); |
a5f39056 YAP |
147 | mcs_map_result = 0; |
148 | ||
149 | for (nss = 1; nss <= 8; nss++) { | |
150 | mcs_user = GET_VHTNSSMCS(mcs_map_user, nss); | |
151 | mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss); | |
7abf4129 BZ |
152 | if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) || |
153 | (mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED)) | |
154 | SET_VHTNSSMCS(mcs_map_result, nss, | |
155 | IEEE80211_VHT_MCS_NOT_SUPPORTED); | |
a5f39056 YAP |
156 | else |
157 | SET_VHTNSSMCS(mcs_map_result, nss, | |
158 | min(mcs_user, mcs_resp)); | |
159 | } | |
160 | ||
9ed230bc | 161 | vht_cap->supp_mcs.tx_mcs_map = cpu_to_le16(mcs_map_result); |
a5f39056 YAP |
162 | |
163 | tmp = mwifiex_convert_mcsmap_to_maxrate(priv, bands, mcs_map_result); | |
9ed230bc | 164 | vht_cap->supp_mcs.tx_highest = cpu_to_le16(tmp); |
a5f39056 YAP |
165 | |
166 | return; | |
167 | } | |
168 | ||
169 | int mwifiex_cmd_append_11ac_tlv(struct mwifiex_private *priv, | |
170 | struct mwifiex_bssdescriptor *bss_desc, | |
171 | u8 **buffer) | |
172 | { | |
173 | struct mwifiex_ie_types_vhtcap *vht_cap; | |
174 | struct mwifiex_ie_types_oper_mode_ntf *oper_ntf; | |
175 | struct ieee_types_oper_mode_ntf *ieee_oper_ntf; | |
176 | struct mwifiex_ie_types_vht_oper *vht_op; | |
177 | struct mwifiex_adapter *adapter = priv->adapter; | |
178 | u8 supp_chwd_set; | |
179 | u32 usr_vht_cap_info; | |
180 | int ret_len = 0; | |
181 | ||
182 | if (bss_desc->bss_band & BAND_A) | |
183 | usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a; | |
184 | else | |
185 | usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg; | |
186 | ||
187 | /* VHT Capabilities IE */ | |
188 | if (bss_desc->bcn_vht_cap) { | |
189 | vht_cap = (struct mwifiex_ie_types_vhtcap *)*buffer; | |
190 | memset(vht_cap, 0, sizeof(*vht_cap)); | |
191 | vht_cap->header.type = cpu_to_le16(WLAN_EID_VHT_CAPABILITY); | |
192 | vht_cap->header.len = | |
193 | cpu_to_le16(sizeof(struct ieee80211_vht_cap)); | |
194 | memcpy((u8 *)vht_cap + sizeof(struct mwifiex_ie_types_header), | |
d5124648 | 195 | (u8 *)bss_desc->bcn_vht_cap, |
a5f39056 YAP |
196 | le16_to_cpu(vht_cap->header.len)); |
197 | ||
9ed230bc AP |
198 | mwifiex_fill_vht_cap_tlv(priv, &vht_cap->vht_cap, |
199 | bss_desc->bss_band); | |
a5f39056 YAP |
200 | *buffer += sizeof(*vht_cap); |
201 | ret_len += sizeof(*vht_cap); | |
202 | } | |
203 | ||
204 | /* VHT Operation IE */ | |
205 | if (bss_desc->bcn_vht_oper) { | |
0648f3a4 | 206 | if (priv->bss_mode == NL80211_IFTYPE_STATION) { |
a5f39056 YAP |
207 | vht_op = (struct mwifiex_ie_types_vht_oper *)*buffer; |
208 | memset(vht_op, 0, sizeof(*vht_op)); | |
209 | vht_op->header.type = | |
210 | cpu_to_le16(WLAN_EID_VHT_OPERATION); | |
211 | vht_op->header.len = cpu_to_le16(sizeof(*vht_op) - | |
212 | sizeof(struct mwifiex_ie_types_header)); | |
213 | memcpy((u8 *)vht_op + | |
214 | sizeof(struct mwifiex_ie_types_header), | |
cf831ffe | 215 | (u8 *)bss_desc->bcn_vht_oper, |
a5f39056 YAP |
216 | le16_to_cpu(vht_op->header.len)); |
217 | ||
218 | /* negotiate the channel width and central freq | |
219 | * and keep the central freq as the peer suggests | |
220 | */ | |
221 | supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info); | |
222 | ||
223 | switch (supp_chwd_set) { | |
224 | case 0: | |
225 | vht_op->chan_width = | |
226 | min_t(u8, IEEE80211_VHT_CHANWIDTH_80MHZ, | |
227 | bss_desc->bcn_vht_oper->chan_width); | |
228 | break; | |
229 | case 1: | |
230 | vht_op->chan_width = | |
231 | min_t(u8, IEEE80211_VHT_CHANWIDTH_160MHZ, | |
232 | bss_desc->bcn_vht_oper->chan_width); | |
233 | break; | |
234 | case 2: | |
235 | vht_op->chan_width = | |
236 | min_t(u8, IEEE80211_VHT_CHANWIDTH_80P80MHZ, | |
237 | bss_desc->bcn_vht_oper->chan_width); | |
238 | break; | |
239 | default: | |
240 | vht_op->chan_width = | |
241 | IEEE80211_VHT_CHANWIDTH_USE_HT; | |
242 | break; | |
243 | } | |
244 | ||
245 | *buffer += sizeof(*vht_op); | |
246 | ret_len += sizeof(*vht_op); | |
247 | } | |
248 | } | |
249 | ||
250 | /* Operating Mode Notification IE */ | |
251 | if (bss_desc->oper_mode) { | |
252 | ieee_oper_ntf = bss_desc->oper_mode; | |
253 | oper_ntf = (void *)*buffer; | |
254 | memset(oper_ntf, 0, sizeof(*oper_ntf)); | |
255 | oper_ntf->header.type = cpu_to_le16(WLAN_EID_OPMODE_NOTIF); | |
256 | oper_ntf->header.len = cpu_to_le16(sizeof(u8)); | |
257 | oper_ntf->oper_mode = ieee_oper_ntf->oper_mode; | |
258 | *buffer += sizeof(*oper_ntf); | |
259 | ret_len += sizeof(*oper_ntf); | |
260 | } | |
261 | ||
262 | return ret_len; | |
263 | } | |
83c78da9 YAP |
264 | |
265 | int mwifiex_cmd_11ac_cfg(struct mwifiex_private *priv, | |
266 | struct host_cmd_ds_command *cmd, u16 cmd_action, | |
267 | struct mwifiex_11ac_vht_cfg *cfg) | |
268 | { | |
269 | struct host_cmd_11ac_vht_cfg *vhtcfg = &cmd->params.vht_cfg; | |
270 | ||
271 | cmd->command = cpu_to_le16(HostCmd_CMD_11AC_CFG); | |
272 | cmd->size = cpu_to_le16(sizeof(struct host_cmd_11ac_vht_cfg) + | |
273 | S_DS_GEN); | |
274 | vhtcfg->action = cpu_to_le16(cmd_action); | |
275 | vhtcfg->band_config = cfg->band_config; | |
276 | vhtcfg->misc_config = cfg->misc_config; | |
277 | vhtcfg->cap_info = cpu_to_le32(cfg->cap_info); | |
278 | vhtcfg->mcs_tx_set = cpu_to_le32(cfg->mcs_tx_set); | |
279 | vhtcfg->mcs_rx_set = cpu_to_le32(cfg->mcs_rx_set); | |
280 | ||
281 | return 0; | |
282 | } | |
2b6254da AP |
283 | |
284 | /* This function initializes the BlockACK setup information for given | |
285 | * mwifiex_private structure for 11ac enabled networks. | |
286 | */ | |
287 | void mwifiex_set_11ac_ba_params(struct mwifiex_private *priv) | |
288 | { | |
289 | priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT; | |
290 | ||
291 | if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { | |
292 | priv->add_ba_param.tx_win_size = | |
293 | MWIFIEX_11AC_UAP_AMPDU_DEF_TXWINSIZE; | |
294 | priv->add_ba_param.rx_win_size = | |
295 | MWIFIEX_11AC_UAP_AMPDU_DEF_RXWINSIZE; | |
296 | } else { | |
297 | priv->add_ba_param.tx_win_size = | |
298 | MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE; | |
299 | priv->add_ba_param.rx_win_size = | |
300 | MWIFIEX_11AC_STA_AMPDU_DEF_RXWINSIZE; | |
301 | } | |
302 | ||
303 | return; | |
304 | } | |
5f6d5983 AP |
305 | |
306 | bool mwifiex_is_bss_in_11ac_mode(struct mwifiex_private *priv) | |
307 | { | |
308 | struct mwifiex_bssdescriptor *bss_desc; | |
309 | struct ieee80211_vht_operation *vht_oper; | |
310 | ||
311 | bss_desc = &priv->curr_bss_params.bss_descriptor; | |
312 | vht_oper = bss_desc->bcn_vht_oper; | |
313 | ||
314 | if (!bss_desc->bcn_vht_cap || !vht_oper) | |
315 | return false; | |
316 | ||
317 | if (vht_oper->chan_width == IEEE80211_VHT_CHANWIDTH_USE_HT) | |
318 | return false; | |
319 | ||
320 | return true; | |
321 | } | |
322 | ||
323 | u8 mwifiex_get_center_freq_index(struct mwifiex_private *priv, u8 band, | |
324 | u32 pri_chan, u8 chan_bw) | |
325 | { | |
326 | u8 center_freq_idx = 0; | |
327 | ||
328 | if (band & BAND_AAC) { | |
329 | switch (pri_chan) { | |
330 | case 36: | |
331 | case 40: | |
332 | case 44: | |
333 | case 48: | |
334 | if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ) | |
335 | center_freq_idx = 42; | |
336 | break; | |
337 | case 52: | |
338 | case 56: | |
339 | case 60: | |
340 | case 64: | |
341 | if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ) | |
342 | center_freq_idx = 58; | |
343 | else if (chan_bw == IEEE80211_VHT_CHANWIDTH_160MHZ) | |
344 | center_freq_idx = 50; | |
345 | break; | |
346 | case 100: | |
347 | case 104: | |
348 | case 108: | |
349 | case 112: | |
350 | if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ) | |
351 | center_freq_idx = 106; | |
352 | break; | |
353 | case 116: | |
354 | case 120: | |
355 | case 124: | |
356 | case 128: | |
357 | if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ) | |
358 | center_freq_idx = 122; | |
359 | else if (chan_bw == IEEE80211_VHT_CHANWIDTH_160MHZ) | |
360 | center_freq_idx = 114; | |
361 | break; | |
362 | case 132: | |
363 | case 136: | |
364 | case 140: | |
365 | case 144: | |
366 | if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ) | |
367 | center_freq_idx = 138; | |
368 | break; | |
369 | case 149: | |
370 | case 153: | |
371 | case 157: | |
372 | case 161: | |
373 | if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ) | |
374 | center_freq_idx = 155; | |
375 | break; | |
376 | default: | |
377 | center_freq_idx = 42; | |
378 | } | |
379 | } | |
380 | ||
381 | return center_freq_idx; | |
382 | } |