Janusz Dziedzic | 5fd3ac3 | 2015-03-23 17:32:53 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015 Qualcomm Atheros, Inc. |
| 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
| 17 | #include "mac.h" |
| 18 | |
| 19 | #include <net/mac80211.h> |
| 20 | #include "hif.h" |
| 21 | #include "core.h" |
| 22 | #include "debug.h" |
| 23 | #include "wmi.h" |
| 24 | #include "wmi-ops.h" |
| 25 | |
| 26 | static const struct wiphy_wowlan_support ath10k_wowlan_support = { |
| 27 | .flags = WIPHY_WOWLAN_DISCONNECT | |
| 28 | WIPHY_WOWLAN_MAGIC_PKT, |
Janusz Dziedzic | 25c8661 | 2015-03-23 17:32:54 +0200 | [diff] [blame] | 29 | .pattern_min_len = WOW_MIN_PATTERN_SIZE, |
| 30 | .pattern_max_len = WOW_MAX_PATTERN_SIZE, |
| 31 | .max_pkt_offset = WOW_MAX_PKT_OFFSET, |
Janusz Dziedzic | 5fd3ac3 | 2015-03-23 17:32:53 +0200 | [diff] [blame] | 32 | }; |
| 33 | |
| 34 | static int ath10k_wow_vif_cleanup(struct ath10k_vif *arvif) |
| 35 | { |
| 36 | struct ath10k *ar = arvif->ar; |
| 37 | int i, ret; |
| 38 | |
| 39 | for (i = 0; i < WOW_EVENT_MAX; i++) { |
| 40 | ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0); |
| 41 | if (ret) { |
| 42 | ath10k_warn(ar, "failed to issue wow wakeup for event %s on vdev %i: %d\n", |
| 43 | wow_wakeup_event(i), arvif->vdev_id, ret); |
| 44 | return ret; |
| 45 | } |
| 46 | } |
| 47 | |
Janusz Dziedzic | 25c8661 | 2015-03-23 17:32:54 +0200 | [diff] [blame] | 48 | for (i = 0; i < ar->wow.max_num_patterns; i++) { |
| 49 | ret = ath10k_wmi_wow_del_pattern(ar, arvif->vdev_id, i); |
| 50 | if (ret) { |
| 51 | ath10k_warn(ar, "failed to delete wow pattern %d for vdev %i: %d\n", |
| 52 | i, arvif->vdev_id, ret); |
| 53 | return ret; |
| 54 | } |
| 55 | } |
| 56 | |
Janusz Dziedzic | 5fd3ac3 | 2015-03-23 17:32:53 +0200 | [diff] [blame] | 57 | return 0; |
| 58 | } |
| 59 | |
| 60 | static int ath10k_wow_cleanup(struct ath10k *ar) |
| 61 | { |
| 62 | struct ath10k_vif *arvif; |
| 63 | int ret; |
| 64 | |
| 65 | lockdep_assert_held(&ar->conf_mutex); |
| 66 | |
| 67 | list_for_each_entry(arvif, &ar->arvifs, list) { |
| 68 | ret = ath10k_wow_vif_cleanup(arvif); |
| 69 | if (ret) { |
| 70 | ath10k_warn(ar, "failed to clean wow wakeups on vdev %i: %d\n", |
| 71 | arvif->vdev_id, ret); |
| 72 | return ret; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | return 0; |
| 77 | } |
| 78 | |
| 79 | static int ath10k_vif_wow_set_wakeups(struct ath10k_vif *arvif, |
| 80 | struct cfg80211_wowlan *wowlan) |
| 81 | { |
| 82 | int ret, i; |
| 83 | unsigned long wow_mask = 0; |
| 84 | struct ath10k *ar = arvif->ar; |
Janusz Dziedzic | 25c8661 | 2015-03-23 17:32:54 +0200 | [diff] [blame] | 85 | const struct cfg80211_pkt_pattern *patterns = wowlan->patterns; |
| 86 | int pattern_id = 0; |
Janusz Dziedzic | 5fd3ac3 | 2015-03-23 17:32:53 +0200 | [diff] [blame] | 87 | |
| 88 | /* Setup requested WOW features */ |
| 89 | switch (arvif->vdev_type) { |
| 90 | case WMI_VDEV_TYPE_IBSS: |
| 91 | __set_bit(WOW_BEACON_EVENT, &wow_mask); |
| 92 | /* fall through */ |
| 93 | case WMI_VDEV_TYPE_AP: |
| 94 | __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask); |
| 95 | __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask); |
| 96 | __set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask); |
| 97 | __set_bit(WOW_AUTH_REQ_EVENT, &wow_mask); |
| 98 | __set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask); |
| 99 | __set_bit(WOW_HTT_EVENT, &wow_mask); |
| 100 | __set_bit(WOW_RA_MATCH_EVENT, &wow_mask); |
| 101 | break; |
| 102 | case WMI_VDEV_TYPE_STA: |
| 103 | if (wowlan->disconnect) { |
| 104 | __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask); |
| 105 | __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask); |
| 106 | __set_bit(WOW_BMISS_EVENT, &wow_mask); |
| 107 | __set_bit(WOW_CSA_IE_EVENT, &wow_mask); |
| 108 | } |
| 109 | |
| 110 | if (wowlan->magic_pkt) |
| 111 | __set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask); |
| 112 | break; |
| 113 | default: |
| 114 | break; |
| 115 | } |
| 116 | |
Janusz Dziedzic | 25c8661 | 2015-03-23 17:32:54 +0200 | [diff] [blame] | 117 | for (i = 0; i < wowlan->n_patterns; i++) { |
| 118 | u8 bitmask[WOW_MAX_PATTERN_SIZE] = {}; |
| 119 | int j; |
| 120 | |
| 121 | if (patterns[i].pattern_len > WOW_MAX_PATTERN_SIZE) |
| 122 | continue; |
| 123 | |
| 124 | /* convert bytemask to bitmask */ |
| 125 | for (j = 0; j < patterns[i].pattern_len; j++) |
| 126 | if (patterns[i].mask[j / 8] & BIT(j % 8)) |
| 127 | bitmask[j] = 0xff; |
| 128 | |
| 129 | ret = ath10k_wmi_wow_add_pattern(ar, arvif->vdev_id, |
| 130 | pattern_id, |
| 131 | patterns[i].pattern, |
| 132 | bitmask, |
| 133 | patterns[i].pattern_len, |
| 134 | patterns[i].pkt_offset); |
| 135 | if (ret) { |
| 136 | ath10k_warn(ar, "failed to add pattern %i to vdev %i: %d\n", |
| 137 | pattern_id, |
| 138 | arvif->vdev_id, ret); |
| 139 | return ret; |
| 140 | } |
| 141 | |
| 142 | pattern_id++; |
| 143 | __set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask); |
| 144 | } |
| 145 | |
Janusz Dziedzic | 5fd3ac3 | 2015-03-23 17:32:53 +0200 | [diff] [blame] | 146 | for (i = 0; i < WOW_EVENT_MAX; i++) { |
| 147 | if (!test_bit(i, &wow_mask)) |
| 148 | continue; |
| 149 | ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1); |
| 150 | if (ret) { |
| 151 | ath10k_warn(ar, "failed to enable wakeup event %s on vdev %i: %d\n", |
| 152 | wow_wakeup_event(i), arvif->vdev_id, ret); |
| 153 | return ret; |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | static int ath10k_wow_set_wakeups(struct ath10k *ar, |
| 161 | struct cfg80211_wowlan *wowlan) |
| 162 | { |
| 163 | struct ath10k_vif *arvif; |
| 164 | int ret; |
| 165 | |
| 166 | lockdep_assert_held(&ar->conf_mutex); |
| 167 | |
| 168 | list_for_each_entry(arvif, &ar->arvifs, list) { |
| 169 | ret = ath10k_vif_wow_set_wakeups(arvif, wowlan); |
| 170 | if (ret) { |
| 171 | ath10k_warn(ar, "failed to set wow wakeups on vdev %i: %d\n", |
| 172 | arvif->vdev_id, ret); |
| 173 | return ret; |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | static int ath10k_wow_enable(struct ath10k *ar) |
| 181 | { |
| 182 | int ret; |
| 183 | |
| 184 | lockdep_assert_held(&ar->conf_mutex); |
| 185 | |
| 186 | reinit_completion(&ar->target_suspend); |
| 187 | |
| 188 | ret = ath10k_wmi_wow_enable(ar); |
| 189 | if (ret) { |
| 190 | ath10k_warn(ar, "failed to issue wow enable: %d\n", ret); |
| 191 | return ret; |
| 192 | } |
| 193 | |
| 194 | ret = wait_for_completion_timeout(&ar->target_suspend, 3 * HZ); |
| 195 | if (ret == 0) { |
| 196 | ath10k_warn(ar, "timed out while waiting for suspend completion\n"); |
| 197 | return -ETIMEDOUT; |
| 198 | } |
| 199 | |
| 200 | return 0; |
| 201 | } |
| 202 | |
| 203 | static int ath10k_wow_wakeup(struct ath10k *ar) |
| 204 | { |
| 205 | int ret; |
| 206 | |
| 207 | lockdep_assert_held(&ar->conf_mutex); |
| 208 | |
| 209 | reinit_completion(&ar->wow.wakeup_completed); |
| 210 | |
| 211 | ret = ath10k_wmi_wow_host_wakeup_ind(ar); |
| 212 | if (ret) { |
| 213 | ath10k_warn(ar, "failed to send wow wakeup indication: %d\n", |
| 214 | ret); |
| 215 | return ret; |
| 216 | } |
| 217 | |
| 218 | ret = wait_for_completion_timeout(&ar->wow.wakeup_completed, 3 * HZ); |
| 219 | if (ret == 0) { |
| 220 | ath10k_warn(ar, "timed out while waiting for wow wakeup completion\n"); |
| 221 | return -ETIMEDOUT; |
| 222 | } |
| 223 | |
| 224 | return 0; |
| 225 | } |
| 226 | |
| 227 | int ath10k_wow_op_suspend(struct ieee80211_hw *hw, |
| 228 | struct cfg80211_wowlan *wowlan) |
| 229 | { |
| 230 | struct ath10k *ar = hw->priv; |
| 231 | int ret; |
| 232 | |
| 233 | mutex_lock(&ar->conf_mutex); |
| 234 | |
| 235 | if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT, |
| 236 | ar->fw_features))) { |
| 237 | ret = 1; |
| 238 | goto exit; |
| 239 | } |
| 240 | |
| 241 | ret = ath10k_wow_cleanup(ar); |
| 242 | if (ret) { |
| 243 | ath10k_warn(ar, "failed to clear wow wakeup events: %d\n", |
| 244 | ret); |
| 245 | goto exit; |
| 246 | } |
| 247 | |
| 248 | ret = ath10k_wow_set_wakeups(ar, wowlan); |
| 249 | if (ret) { |
| 250 | ath10k_warn(ar, "failed to set wow wakeup events: %d\n", |
| 251 | ret); |
| 252 | goto cleanup; |
| 253 | } |
| 254 | |
| 255 | ret = ath10k_wow_enable(ar); |
| 256 | if (ret) { |
| 257 | ath10k_warn(ar, "failed to start wow: %d\n", ret); |
| 258 | goto cleanup; |
| 259 | } |
| 260 | |
| 261 | ret = ath10k_hif_suspend(ar); |
| 262 | if (ret) { |
| 263 | ath10k_warn(ar, "failed to suspend hif: %d\n", ret); |
| 264 | goto wakeup; |
| 265 | } |
| 266 | |
| 267 | goto exit; |
| 268 | |
| 269 | wakeup: |
| 270 | ath10k_wow_wakeup(ar); |
| 271 | |
| 272 | cleanup: |
| 273 | ath10k_wow_cleanup(ar); |
| 274 | |
| 275 | exit: |
| 276 | mutex_unlock(&ar->conf_mutex); |
| 277 | return ret ? 1 : 0; |
| 278 | } |
| 279 | |
| 280 | int ath10k_wow_op_resume(struct ieee80211_hw *hw) |
| 281 | { |
| 282 | struct ath10k *ar = hw->priv; |
| 283 | int ret; |
| 284 | |
| 285 | mutex_lock(&ar->conf_mutex); |
| 286 | |
| 287 | if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT, |
| 288 | ar->fw_features))) { |
| 289 | ret = 1; |
| 290 | goto exit; |
| 291 | } |
| 292 | |
| 293 | ret = ath10k_hif_resume(ar); |
| 294 | if (ret) { |
| 295 | ath10k_warn(ar, "failed to resume hif: %d\n", ret); |
| 296 | goto exit; |
| 297 | } |
| 298 | |
| 299 | ret = ath10k_wow_wakeup(ar); |
| 300 | if (ret) |
| 301 | ath10k_warn(ar, "failed to wakeup from wow: %d\n", ret); |
| 302 | |
| 303 | exit: |
Michal Kazior | 6f7429c | 2015-08-05 12:08:38 +0200 | [diff] [blame] | 304 | if (ret) { |
| 305 | switch (ar->state) { |
| 306 | case ATH10K_STATE_ON: |
| 307 | ar->state = ATH10K_STATE_RESTARTING; |
| 308 | ret = 1; |
| 309 | break; |
| 310 | case ATH10K_STATE_OFF: |
| 311 | case ATH10K_STATE_RESTARTING: |
| 312 | case ATH10K_STATE_RESTARTED: |
| 313 | case ATH10K_STATE_UTF: |
| 314 | case ATH10K_STATE_WEDGED: |
| 315 | ath10k_warn(ar, "encountered unexpected device state %d on resume, cannot recover\n", |
| 316 | ar->state); |
| 317 | ret = -EIO; |
| 318 | break; |
| 319 | } |
| 320 | } |
| 321 | |
Janusz Dziedzic | 5fd3ac3 | 2015-03-23 17:32:53 +0200 | [diff] [blame] | 322 | mutex_unlock(&ar->conf_mutex); |
Michal Kazior | 6f7429c | 2015-08-05 12:08:38 +0200 | [diff] [blame] | 323 | return ret; |
Janusz Dziedzic | 5fd3ac3 | 2015-03-23 17:32:53 +0200 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | int ath10k_wow_init(struct ath10k *ar) |
| 327 | { |
| 328 | if (!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT, ar->fw_features)) |
| 329 | return 0; |
| 330 | |
| 331 | if (WARN_ON(!test_bit(WMI_SERVICE_WOW, ar->wmi.svc_map))) |
| 332 | return -EINVAL; |
| 333 | |
Janusz Dziedzic | 25c8661 | 2015-03-23 17:32:54 +0200 | [diff] [blame] | 334 | ar->wow.wowlan_support = ath10k_wowlan_support; |
| 335 | ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns; |
| 336 | ar->hw->wiphy->wowlan = &ar->wow.wowlan_support; |
Janusz Dziedzic | 5fd3ac3 | 2015-03-23 17:32:53 +0200 | [diff] [blame] | 337 | |
| 338 | return 0; |
| 339 | } |