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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2023 Intel Corporation
4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2017 Intel Deutschland GmbH
6 */
7#include <net/mac80211.h>
8#include "fw-api.h"
9#include "mvm.h"
10
11/* Maps the driver specific channel width definition to the fw values */
12u8 iwl_mvm_get_channel_width(struct cfg80211_chan_def *chandef)
13{
14 switch (chandef->width) {
15 case NL80211_CHAN_WIDTH_20_NOHT:
16 case NL80211_CHAN_WIDTH_20:
17 return IWL_PHY_CHANNEL_MODE20;
18 case NL80211_CHAN_WIDTH_40:
19 return IWL_PHY_CHANNEL_MODE40;
20 case NL80211_CHAN_WIDTH_80:
21 return IWL_PHY_CHANNEL_MODE80;
22 case NL80211_CHAN_WIDTH_160:
23 return IWL_PHY_CHANNEL_MODE160;
24 case NL80211_CHAN_WIDTH_320:
25 return IWL_PHY_CHANNEL_MODE320;
26 default:
27 WARN(1, "Invalid channel width=%u", chandef->width);
28 return IWL_PHY_CHANNEL_MODE20;
29 }
30}
31
32/*
33 * Maps the driver specific control channel position (relative to the center
34 * freq) definitions to the the fw values
35 */
36u8 iwl_mvm_get_ctrl_pos(struct cfg80211_chan_def *chandef)
37{
38 int offs = chandef->chan->center_freq - chandef->center_freq1;
39 int abs_offs = abs(offs);
40 u8 ret;
41
42 if (offs == 0) {
43 /*
44 * The FW is expected to check the control channel position only
45 * when in HT/VHT and the channel width is not 20MHz. Return
46 * this value as the default one.
47 */
48 return 0;
49 }
50
51 /* this results in a value 0-7, i.e. fitting into 0b0111 */
52 ret = (abs_offs - 10) / 20;
53 /*
54 * But we need the value to be in 0b1011 because 0b0100 is
55 * IWL_PHY_CTRL_POS_ABOVE, so shift bit 2 up to land in
56 * IWL_PHY_CTRL_POS_OFFS_EXT (0b1000)
57 */
58 ret = (ret & IWL_PHY_CTRL_POS_OFFS_MSK) |
59 ((ret & BIT(2)) << 1);
60 /* and add the above bit */
61 ret |= (offs > 0) * IWL_PHY_CTRL_POS_ABOVE;
62
63 return ret;
64}
65
66/*
67 * Construct the generic fields of the PHY context command
68 */
69static void iwl_mvm_phy_ctxt_cmd_hdr(struct iwl_mvm_phy_ctxt *ctxt,
70 struct iwl_phy_context_cmd *cmd,
71 u32 action)
72{
73 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(ctxt->id,
74 ctxt->color));
75 cmd->action = cpu_to_le32(action);
76}
77
78static void iwl_mvm_phy_ctxt_set_rxchain(struct iwl_mvm *mvm,
79 struct iwl_mvm_phy_ctxt *ctxt,
80 __le32 *rxchain_info,
81 u8 chains_static,
82 u8 chains_dynamic)
83{
84 u8 active_cnt, idle_cnt;
85
86 /* Set rx the chains */
87 idle_cnt = chains_static;
88 active_cnt = chains_dynamic;
89
90 /* In scenarios where we only ever use a single-stream rates,
91 * i.e. legacy 11b/g/a associations, single-stream APs or even
92 * static SMPS, enable both chains to get diversity, improving
93 * the case where we're far enough from the AP that attenuation
94 * between the two antennas is sufficiently different to impact
95 * performance.
96 */
97 if (active_cnt == 1 && iwl_mvm_rx_diversity_allowed(mvm, ctxt)) {
98 idle_cnt = 2;
99 active_cnt = 2;
100 }
101
102 *rxchain_info = cpu_to_le32(iwl_mvm_get_valid_rx_ant(mvm) <<
103 PHY_RX_CHAIN_VALID_POS);
104 *rxchain_info |= cpu_to_le32(idle_cnt << PHY_RX_CHAIN_CNT_POS);
105 *rxchain_info |= cpu_to_le32(active_cnt <<
106 PHY_RX_CHAIN_MIMO_CNT_POS);
107#ifdef CONFIG_IWLWIFI_DEBUGFS
108 if (unlikely(mvm->dbgfs_rx_phyinfo))
109 *rxchain_info = cpu_to_le32(mvm->dbgfs_rx_phyinfo);
110#endif
111}
112
113/*
114 * Add the phy configuration to the PHY context command
115 */
116static void iwl_mvm_phy_ctxt_cmd_data_v1(struct iwl_mvm *mvm,
117 struct iwl_mvm_phy_ctxt *ctxt,
118 struct iwl_phy_context_cmd_v1 *cmd,
119 struct cfg80211_chan_def *chandef,
120 u8 chains_static, u8 chains_dynamic)
121{
122 struct iwl_phy_context_cmd_tail *tail =
123 iwl_mvm_chan_info_cmd_tail(mvm, &cmd->ci);
124
125 /* Set the channel info data */
126 iwl_mvm_set_chan_info_chandef(mvm, &cmd->ci, chandef);
127
128 iwl_mvm_phy_ctxt_set_rxchain(mvm, ctxt, &tail->rxchain_info,
129 chains_static, chains_dynamic);
130
131 tail->txchain_info = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
132}
133
134/*
135 * Add the phy configuration to the PHY context command
136 */
137static void iwl_mvm_phy_ctxt_cmd_data(struct iwl_mvm *mvm,
138 struct iwl_mvm_phy_ctxt *ctxt,
139 struct iwl_phy_context_cmd *cmd,
140 struct cfg80211_chan_def *chandef,
141 u8 chains_static, u8 chains_dynamic)
142{
143 cmd->lmac_id = cpu_to_le32(iwl_mvm_get_lmac_id(mvm,
144 chandef->chan->band));
145
146 /* Set the channel info data */
147 iwl_mvm_set_chan_info_chandef(mvm, &cmd->ci, chandef);
148
149 /* we only support RLC command version 2 */
150 if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP, RLC_CONFIG_CMD), 0) < 2)
151 iwl_mvm_phy_ctxt_set_rxchain(mvm, ctxt, &cmd->rxchain_info,
152 chains_static, chains_dynamic);
153}
154
155int iwl_mvm_phy_send_rlc(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
156 u8 chains_static, u8 chains_dynamic)
157{
158 struct iwl_rlc_config_cmd cmd = {
159 .phy_id = cpu_to_le32(ctxt->id),
160 };
161
162 if (ctxt->rlc_disabled)
163 return 0;
164
165 if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP,
166 RLC_CONFIG_CMD), 0) < 2)
167 return 0;
168
169 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_DRIVER_FORCE !=
170 PHY_RX_CHAIN_DRIVER_FORCE_MSK);
171 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_VALID !=
172 PHY_RX_CHAIN_VALID_MSK);
173 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_FORCE !=
174 PHY_RX_CHAIN_FORCE_SEL_MSK);
175 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_FORCE_MIMO !=
176 PHY_RX_CHAIN_FORCE_MIMO_SEL_MSK);
177 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_COUNT != PHY_RX_CHAIN_CNT_MSK);
178 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_MIMO_COUNT !=
179 PHY_RX_CHAIN_MIMO_CNT_MSK);
180
181 iwl_mvm_phy_ctxt_set_rxchain(mvm, ctxt, &cmd.rlc.rx_chain_info,
182 chains_static, chains_dynamic);
183
184 IWL_DEBUG_FW(mvm, "Send RLC command: phy=%d, rx_chain_info=0x%x\n",
185 ctxt->id, cmd.rlc.rx_chain_info);
186
187 return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(RLC_CONFIG_CMD,
188 DATA_PATH_GROUP, 2),
189 0, sizeof(cmd), &cmd);
190}
191
192/*
193 * Send a command to apply the current phy configuration. The command is send
194 * only if something in the configuration changed: in case that this is the
195 * first time that the phy configuration is applied or in case that the phy
196 * configuration changed from the previous apply.
197 */
198static int iwl_mvm_phy_ctxt_apply(struct iwl_mvm *mvm,
199 struct iwl_mvm_phy_ctxt *ctxt,
200 struct cfg80211_chan_def *chandef,
201 u8 chains_static, u8 chains_dynamic,
202 u32 action)
203{
204 int ret;
205 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, PHY_CONTEXT_CMD, 1);
206
207 if (ver == 3 || ver == 4) {
208 struct iwl_phy_context_cmd cmd = {};
209
210 /* Set the command header fields */
211 iwl_mvm_phy_ctxt_cmd_hdr(ctxt, &cmd, action);
212
213 /* Set the command data */
214 iwl_mvm_phy_ctxt_cmd_data(mvm, ctxt, &cmd, chandef,
215 chains_static,
216 chains_dynamic);
217
218 ret = iwl_mvm_send_cmd_pdu(mvm, PHY_CONTEXT_CMD,
219 0, sizeof(cmd), &cmd);
220 } else if (ver < 3) {
221 struct iwl_phy_context_cmd_v1 cmd = {};
222 u16 len = sizeof(cmd) - iwl_mvm_chan_info_padding(mvm);
223
224 /* Set the command header fields */
225 iwl_mvm_phy_ctxt_cmd_hdr(ctxt,
226 (struct iwl_phy_context_cmd *)&cmd,
227 action);
228
229 /* Set the command data */
230 iwl_mvm_phy_ctxt_cmd_data_v1(mvm, ctxt, &cmd, chandef,
231 chains_static,
232 chains_dynamic);
233 ret = iwl_mvm_send_cmd_pdu(mvm, PHY_CONTEXT_CMD,
234 0, len, &cmd);
235 } else {
236 IWL_ERR(mvm, "PHY ctxt cmd error ver %d not supported\n", ver);
237 return -EOPNOTSUPP;
238 }
239
240
241 if (ret) {
242 IWL_ERR(mvm, "PHY ctxt cmd error. ret=%d\n", ret);
243 return ret;
244 }
245
246 if (action != FW_CTXT_ACTION_REMOVE)
247 return iwl_mvm_phy_send_rlc(mvm, ctxt, chains_static,
248 chains_dynamic);
249
250 return 0;
251}
252
253/*
254 * Send a command to add a PHY context based on the current HW configuration.
255 */
256int iwl_mvm_phy_ctxt_add(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
257 struct cfg80211_chan_def *chandef,
258 u8 chains_static, u8 chains_dynamic)
259{
260 int ret;
261
262 WARN_ON(!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
263 ctxt->ref);
264 lockdep_assert_held(&mvm->mutex);
265
266 ctxt->channel = chandef->chan;
267 ctxt->width = chandef->width;
268 ctxt->center_freq1 = chandef->center_freq1;
269
270 ret = iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
271 chains_static, chains_dynamic,
272 FW_CTXT_ACTION_ADD);
273
274 if (ret)
275 return ret;
276
277 ctxt->ref++;
278
279 return 0;
280}
281
282/*
283 * Update the number of references to the given PHY context. This is valid only
284 * in case the PHY context was already created, i.e., its reference count > 0.
285 */
286void iwl_mvm_phy_ctxt_ref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
287{
288 lockdep_assert_held(&mvm->mutex);
289
290 /* If we were taking the first ref, we should have
291 * called iwl_mvm_phy_ctxt_add.
292 */
293 WARN_ON(!ctxt->ref);
294 ctxt->ref++;
295}
296
297/*
298 * Send a command to modify the PHY context based on the current HW
299 * configuration. Note that the function does not check that the configuration
300 * changed.
301 */
302int iwl_mvm_phy_ctxt_changed(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
303 struct cfg80211_chan_def *chandef,
304 u8 chains_static, u8 chains_dynamic)
305{
306 enum iwl_ctxt_action action = FW_CTXT_ACTION_MODIFY;
307
308 lockdep_assert_held(&mvm->mutex);
309
310 if (WARN_ON_ONCE(!ctxt->ref))
311 return -EINVAL;
312
313 if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP,
314 RLC_CONFIG_CMD), 0) >= 2 &&
315 ctxt->channel == chandef->chan &&
316 ctxt->width == chandef->width &&
317 ctxt->center_freq1 == chandef->center_freq1)
318 return iwl_mvm_phy_send_rlc(mvm, ctxt, chains_static,
319 chains_dynamic);
320
321 if (fw_has_capa(&mvm->fw->ucode_capa,
322 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) &&
323 ctxt->channel->band != chandef->chan->band) {
324 int ret;
325
326 /* ... remove it here ...*/
327 ret = iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
328 chains_static, chains_dynamic,
329 FW_CTXT_ACTION_REMOVE);
330 if (ret)
331 return ret;
332
333 /* ... and proceed to add it again */
334 action = FW_CTXT_ACTION_ADD;
335 }
336
337 ctxt->channel = chandef->chan;
338 ctxt->width = chandef->width;
339 ctxt->center_freq1 = chandef->center_freq1;
340
341 return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
342 chains_static, chains_dynamic,
343 action);
344}
345
346void iwl_mvm_phy_ctxt_unref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
347{
348 struct cfg80211_chan_def chandef;
349 lockdep_assert_held(&mvm->mutex);
350
351 if (WARN_ON_ONCE(!ctxt))
352 return;
353
354 ctxt->ref--;
355
356 if (ctxt->ref)
357 return;
358
359 cfg80211_chandef_create(&chandef, ctxt->channel, NL80211_CHAN_NO_HT);
360
361 iwl_mvm_phy_ctxt_apply(mvm, ctxt, &chandef, 1, 1,
362 FW_CTXT_ACTION_REMOVE);
363}
364
365static void iwl_mvm_binding_iterator(void *_data, u8 *mac,
366 struct ieee80211_vif *vif)
367{
368 unsigned long *data = _data;
369 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
370
371 if (!mvmvif->deflink.phy_ctxt)
372 return;
373
374 if (vif->type == NL80211_IFTYPE_STATION ||
375 vif->type == NL80211_IFTYPE_AP)
376 __set_bit(mvmvif->deflink.phy_ctxt->id, data);
377}
378
379int iwl_mvm_phy_ctx_count(struct iwl_mvm *mvm)
380{
381 unsigned long phy_ctxt_counter = 0;
382
383 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
384 IEEE80211_IFACE_ITER_NORMAL,
385 iwl_mvm_binding_iterator,
386 &phy_ctxt_counter);
387
388 return hweight8(phy_ctxt_counter);
389}
1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation
4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2017 Intel Deutschland GmbH
6 */
7#include <net/mac80211.h>
8#include "fw-api.h"
9#include "mvm.h"
10
11/* Maps the driver specific channel width definition to the fw values */
12u8 iwl_mvm_get_channel_width(const struct cfg80211_chan_def *chandef)
13{
14 switch (chandef->width) {
15 case NL80211_CHAN_WIDTH_20_NOHT:
16 case NL80211_CHAN_WIDTH_20:
17 return IWL_PHY_CHANNEL_MODE20;
18 case NL80211_CHAN_WIDTH_40:
19 return IWL_PHY_CHANNEL_MODE40;
20 case NL80211_CHAN_WIDTH_80:
21 return IWL_PHY_CHANNEL_MODE80;
22 case NL80211_CHAN_WIDTH_160:
23 return IWL_PHY_CHANNEL_MODE160;
24 case NL80211_CHAN_WIDTH_320:
25 return IWL_PHY_CHANNEL_MODE320;
26 default:
27 WARN(1, "Invalid channel width=%u", chandef->width);
28 return IWL_PHY_CHANNEL_MODE20;
29 }
30}
31
32/*
33 * Maps the driver specific control channel position (relative to the center
34 * freq) definitions to the the fw values
35 */
36u8 iwl_mvm_get_ctrl_pos(const struct cfg80211_chan_def *chandef)
37{
38 int offs = chandef->chan->center_freq - chandef->center_freq1;
39 int abs_offs = abs(offs);
40 u8 ret;
41
42 if (offs == 0) {
43 /*
44 * The FW is expected to check the control channel position only
45 * when in HT/VHT and the channel width is not 20MHz. Return
46 * this value as the default one.
47 */
48 return 0;
49 }
50
51 /* this results in a value 0-7, i.e. fitting into 0b0111 */
52 ret = (abs_offs - 10) / 20;
53 /*
54 * But we need the value to be in 0b1011 because 0b0100 is
55 * IWL_PHY_CTRL_POS_ABOVE, so shift bit 2 up to land in
56 * IWL_PHY_CTRL_POS_OFFS_EXT (0b1000)
57 */
58 ret = (ret & IWL_PHY_CTRL_POS_OFFS_MSK) |
59 ((ret & BIT(2)) << 1);
60 /* and add the above bit */
61 ret |= (offs > 0) * IWL_PHY_CTRL_POS_ABOVE;
62
63 return ret;
64}
65
66/*
67 * Construct the generic fields of the PHY context command
68 */
69static void iwl_mvm_phy_ctxt_cmd_hdr(struct iwl_mvm_phy_ctxt *ctxt,
70 struct iwl_phy_context_cmd *cmd,
71 u32 action)
72{
73 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(ctxt->id,
74 ctxt->color));
75 cmd->action = cpu_to_le32(action);
76}
77
78static void iwl_mvm_phy_ctxt_set_rxchain(struct iwl_mvm *mvm,
79 struct iwl_mvm_phy_ctxt *ctxt,
80 __le32 *rxchain_info,
81 u8 chains_static,
82 u8 chains_dynamic)
83{
84 u8 active_cnt, idle_cnt;
85
86 /* Set rx the chains */
87 idle_cnt = chains_static;
88 active_cnt = chains_dynamic;
89
90 /* In scenarios where we only ever use a single-stream rates,
91 * i.e. legacy 11b/g/a associations, single-stream APs or even
92 * static SMPS, enable both chains to get diversity, improving
93 * the case where we're far enough from the AP that attenuation
94 * between the two antennas is sufficiently different to impact
95 * performance.
96 */
97 if (active_cnt == 1 && iwl_mvm_rx_diversity_allowed(mvm, ctxt)) {
98 idle_cnt = 2;
99 active_cnt = 2;
100 }
101
102 *rxchain_info = cpu_to_le32(iwl_mvm_get_valid_rx_ant(mvm) <<
103 PHY_RX_CHAIN_VALID_POS);
104 *rxchain_info |= cpu_to_le32(idle_cnt << PHY_RX_CHAIN_CNT_POS);
105 *rxchain_info |= cpu_to_le32(active_cnt <<
106 PHY_RX_CHAIN_MIMO_CNT_POS);
107#ifdef CONFIG_IWLWIFI_DEBUGFS
108 if (unlikely(mvm->dbgfs_rx_phyinfo))
109 *rxchain_info = cpu_to_le32(mvm->dbgfs_rx_phyinfo);
110#endif
111}
112
113/*
114 * Add the phy configuration to the PHY context command
115 */
116static void iwl_mvm_phy_ctxt_cmd_data_v1(struct iwl_mvm *mvm,
117 struct iwl_mvm_phy_ctxt *ctxt,
118 struct iwl_phy_context_cmd_v1 *cmd,
119 const struct cfg80211_chan_def *chandef,
120 u8 chains_static, u8 chains_dynamic)
121{
122 struct iwl_phy_context_cmd_tail *tail =
123 iwl_mvm_chan_info_cmd_tail(mvm, &cmd->ci);
124
125 /* Set the channel info data */
126 iwl_mvm_set_chan_info_chandef(mvm, &cmd->ci, chandef);
127
128 iwl_mvm_phy_ctxt_set_rxchain(mvm, ctxt, &tail->rxchain_info,
129 chains_static, chains_dynamic);
130
131 tail->txchain_info = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
132}
133
134/*
135 * Add the phy configuration to the PHY context command
136 */
137static void iwl_mvm_phy_ctxt_cmd_data(struct iwl_mvm *mvm,
138 struct iwl_mvm_phy_ctxt *ctxt,
139 struct iwl_phy_context_cmd *cmd,
140 const struct cfg80211_chan_def *chandef,
141 u8 chains_static, u8 chains_dynamic)
142{
143 cmd->lmac_id = cpu_to_le32(iwl_mvm_get_lmac_id(mvm,
144 chandef->chan->band));
145
146 /* Set the channel info data */
147 iwl_mvm_set_chan_info_chandef(mvm, &cmd->ci, chandef);
148
149 /* we only support RLC command version 2 */
150 if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP, RLC_CONFIG_CMD), 0) < 2)
151 iwl_mvm_phy_ctxt_set_rxchain(mvm, ctxt, &cmd->rxchain_info,
152 chains_static, chains_dynamic);
153}
154
155int iwl_mvm_phy_send_rlc(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
156 u8 chains_static, u8 chains_dynamic)
157{
158 struct iwl_rlc_config_cmd cmd = {
159 .phy_id = cpu_to_le32(ctxt->id),
160 };
161
162 /* From version 3, RLC is offloaded to firmware, so the driver no
163 * longer needs to send cmd.rlc, note that we are not using any
164 * other fields in the command - don't send it.
165 */
166 if (iwl_mvm_has_rlc_offload(mvm) || ctxt->rlc_disabled)
167 return 0;
168
169 if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP,
170 RLC_CONFIG_CMD), 0) < 2)
171 return 0;
172
173 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_DRIVER_FORCE !=
174 PHY_RX_CHAIN_DRIVER_FORCE_MSK);
175 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_VALID !=
176 PHY_RX_CHAIN_VALID_MSK);
177 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_FORCE !=
178 PHY_RX_CHAIN_FORCE_SEL_MSK);
179 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_FORCE_MIMO !=
180 PHY_RX_CHAIN_FORCE_MIMO_SEL_MSK);
181 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_COUNT != PHY_RX_CHAIN_CNT_MSK);
182 BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_MIMO_COUNT !=
183 PHY_RX_CHAIN_MIMO_CNT_MSK);
184
185 iwl_mvm_phy_ctxt_set_rxchain(mvm, ctxt, &cmd.rlc.rx_chain_info,
186 chains_static, chains_dynamic);
187
188 IWL_DEBUG_FW(mvm, "Send RLC command: phy=%d, rx_chain_info=0x%x\n",
189 ctxt->id, cmd.rlc.rx_chain_info);
190
191 return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(RLC_CONFIG_CMD,
192 DATA_PATH_GROUP, 2),
193 0, sizeof(cmd), &cmd);
194}
195
196/*
197 * Send a command to apply the current phy configuration. The command is send
198 * only if something in the configuration changed: in case that this is the
199 * first time that the phy configuration is applied or in case that the phy
200 * configuration changed from the previous apply.
201 */
202static int iwl_mvm_phy_ctxt_apply(struct iwl_mvm *mvm,
203 struct iwl_mvm_phy_ctxt *ctxt,
204 const struct cfg80211_chan_def *chandef,
205 const struct cfg80211_chan_def *ap,
206 u8 chains_static, u8 chains_dynamic,
207 u32 action)
208{
209 int ret;
210 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, PHY_CONTEXT_CMD, 1);
211
212 if (ver < 5 || !ap || !ap->chan)
213 ap = NULL;
214
215 if (ver >= 3 && ver <= 6) {
216 struct iwl_phy_context_cmd cmd = {};
217
218 /* Set the command header fields */
219 iwl_mvm_phy_ctxt_cmd_hdr(ctxt, &cmd, action);
220
221 /* Set the command data */
222 iwl_mvm_phy_ctxt_cmd_data(mvm, ctxt, &cmd, chandef,
223 chains_static,
224 chains_dynamic);
225
226 if (ap) {
227 cmd.sbb_bandwidth = iwl_mvm_get_channel_width(ap);
228 cmd.sbb_ctrl_channel_loc = iwl_mvm_get_ctrl_pos(ap);
229 }
230
231 if (ver == 6)
232 cmd.puncture_mask = cpu_to_le16(chandef->punctured);
233
234 ret = iwl_mvm_send_cmd_pdu(mvm, PHY_CONTEXT_CMD,
235 0, sizeof(cmd), &cmd);
236 } else if (ver < 3) {
237 struct iwl_phy_context_cmd_v1 cmd = {};
238 u16 len = sizeof(cmd) - iwl_mvm_chan_info_padding(mvm);
239
240 /* Set the command header fields */
241 iwl_mvm_phy_ctxt_cmd_hdr(ctxt,
242 (struct iwl_phy_context_cmd *)&cmd,
243 action);
244
245 /* Set the command data */
246 iwl_mvm_phy_ctxt_cmd_data_v1(mvm, ctxt, &cmd, chandef,
247 chains_static,
248 chains_dynamic);
249 ret = iwl_mvm_send_cmd_pdu(mvm, PHY_CONTEXT_CMD,
250 0, len, &cmd);
251 } else {
252 IWL_ERR(mvm, "PHY ctxt cmd error ver %d not supported\n", ver);
253 return -EOPNOTSUPP;
254 }
255
256
257 if (ret) {
258 IWL_ERR(mvm, "PHY ctxt cmd error. ret=%d\n", ret);
259 return ret;
260 }
261
262 if (action != FW_CTXT_ACTION_REMOVE)
263 return iwl_mvm_phy_send_rlc(mvm, ctxt, chains_static,
264 chains_dynamic);
265
266 return 0;
267}
268
269/*
270 * Send a command to add a PHY context based on the current HW configuration.
271 */
272int iwl_mvm_phy_ctxt_add(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
273 const struct cfg80211_chan_def *chandef,
274 const struct cfg80211_chan_def *ap,
275 u8 chains_static, u8 chains_dynamic)
276{
277 int ret;
278
279 WARN_ON(!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
280 ctxt->ref);
281 lockdep_assert_held(&mvm->mutex);
282
283 ctxt->channel = chandef->chan;
284 ctxt->width = chandef->width;
285 ctxt->center_freq1 = chandef->center_freq1;
286
287 ret = iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef, ap,
288 chains_static, chains_dynamic,
289 FW_CTXT_ACTION_ADD);
290
291 if (ret)
292 return ret;
293
294 ctxt->ref++;
295
296 return 0;
297}
298
299/*
300 * Update the number of references to the given PHY context. This is valid only
301 * in case the PHY context was already created, i.e., its reference count > 0.
302 */
303void iwl_mvm_phy_ctxt_ref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
304{
305 lockdep_assert_held(&mvm->mutex);
306
307 /* If we were taking the first ref, we should have
308 * called iwl_mvm_phy_ctxt_add.
309 */
310 WARN_ON(!ctxt->ref);
311 ctxt->ref++;
312}
313
314/*
315 * Send a command to modify the PHY context based on the current HW
316 * configuration. Note that the function does not check that the configuration
317 * changed.
318 */
319int iwl_mvm_phy_ctxt_changed(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
320 const struct cfg80211_chan_def *chandef,
321 const struct cfg80211_chan_def *ap,
322 u8 chains_static, u8 chains_dynamic)
323{
324 enum iwl_ctxt_action action = FW_CTXT_ACTION_MODIFY;
325
326 lockdep_assert_held(&mvm->mutex);
327
328 if (WARN_ON_ONCE(!ctxt->ref))
329 return -EINVAL;
330
331 if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP,
332 RLC_CONFIG_CMD), 0) >= 2 &&
333 ctxt->channel == chandef->chan &&
334 ctxt->width == chandef->width &&
335 ctxt->center_freq1 == chandef->center_freq1)
336 return iwl_mvm_phy_send_rlc(mvm, ctxt, chains_static,
337 chains_dynamic);
338
339 if (fw_has_capa(&mvm->fw->ucode_capa,
340 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) &&
341 ctxt->channel->band != chandef->chan->band) {
342 int ret;
343
344 /* ... remove it here ...*/
345 ret = iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef, NULL,
346 chains_static, chains_dynamic,
347 FW_CTXT_ACTION_REMOVE);
348 if (ret)
349 return ret;
350
351 /* ... and proceed to add it again */
352 action = FW_CTXT_ACTION_ADD;
353 }
354
355 ctxt->channel = chandef->chan;
356 ctxt->width = chandef->width;
357 ctxt->center_freq1 = chandef->center_freq1;
358
359 return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef, ap,
360 chains_static, chains_dynamic,
361 action);
362}
363
364void iwl_mvm_phy_ctxt_unref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
365{
366 struct cfg80211_chan_def chandef;
367 lockdep_assert_held(&mvm->mutex);
368
369 if (WARN_ON_ONCE(!ctxt))
370 return;
371
372 ctxt->ref--;
373
374 if (ctxt->ref)
375 return;
376
377 cfg80211_chandef_create(&chandef, ctxt->channel, NL80211_CHAN_NO_HT);
378
379 iwl_mvm_phy_ctxt_apply(mvm, ctxt, &chandef, NULL, 1, 1,
380 FW_CTXT_ACTION_REMOVE);
381}
382
383static void iwl_mvm_binding_iterator(void *_data, u8 *mac,
384 struct ieee80211_vif *vif)
385{
386 unsigned long *data = _data;
387 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
388
389 if (!mvmvif->deflink.phy_ctxt)
390 return;
391
392 if (vif->type == NL80211_IFTYPE_STATION ||
393 vif->type == NL80211_IFTYPE_AP)
394 __set_bit(mvmvif->deflink.phy_ctxt->id, data);
395}
396
397int iwl_mvm_phy_ctx_count(struct iwl_mvm *mvm)
398{
399 unsigned long phy_ctxt_counter = 0;
400
401 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
402 IEEE80211_IFACE_ITER_NORMAL,
403 iwl_mvm_binding_iterator,
404 &phy_ctxt_counter);
405
406 return hweight8(phy_ctxt_counter);
407}