drivers/net/wireless/realtek/rtw88/fw.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /* Copyright(c) 2018-2019  Realtek Corporation
   3  */
   4
   5 #include "main.h"
   6 #include "fw.h"
   7 #include "tx.h"
   8 #include "reg.h"
   9 #include "debug.h"
  10
  11 static void rtw_fw_c2h_cmd_handle_ext(struct rtw_dev *rtwdev,
  12                                       struct sk_buff *skb)
  13 {
  14         struct rtw_c2h_cmd *c2h;
  15         u8 sub_cmd_id;
  16
  17         c2h = get_c2h_from_skb(skb);
  18         sub_cmd_id = c2h->payload[0];
  19
  20         switch (sub_cmd_id) {
  21         case C2H_CCX_RPT:
  22                 rtw_tx_report_handle(rtwdev, skb);
  23                 break;
  24         default:
  25                 break;
  26         }
  27 }
  28
  29 void rtw_fw_c2h_cmd_handle(struct rtw_dev *rtwdev, struct sk_buff *skb)
  30 {
  31         struct rtw_c2h_cmd *c2h;
  32         u32 pkt_offset;
  33         u8 len;
  34
  35         pkt_offset = *((u32 *)skb->cb);
  36         c2h = (struct rtw_c2h_cmd *)(skb->data + pkt_offset);
  37         len = skb->len - pkt_offset - 2;
  38
  39         rtw_dbg(rtwdev, RTW_DBG_FW, "recv C2H, id=0x%02x, seq=0x%02x, len=%d\n",
  40                 c2h->id, c2h->seq, len);
  41
  42         switch (c2h->id) {
  43         case C2H_HALMAC:
  44                 rtw_fw_c2h_cmd_handle_ext(rtwdev, skb);
  45                 break;
  46         default:
  47                 break;
  48         }
  49 }
  50
  51 static void rtw_fw_send_h2c_command(struct rtw_dev *rtwdev,
  52                                     u8 *h2c)
  53 {
  54         u8 box;
  55         u8 box_state;
  56         u32 box_reg, box_ex_reg;
  57         u32 h2c_wait;
  58         int idx;
  59
  60         rtw_dbg(rtwdev, RTW_DBG_FW,
  61                 "send H2C content %02x%02x%02x%02x %02x%02x%02x%02x\n",
  62                 h2c[3], h2c[2], h2c[1], h2c[0],
  63                 h2c[7], h2c[6], h2c[5], h2c[4]);
  64
  65         spin_lock(&rtwdev->h2c.lock);
  66
  67         box = rtwdev->h2c.last_box_num;
  68         switch (box) {
  69         case 0:
  70                 box_reg = REG_HMEBOX0;
  71                 box_ex_reg = REG_HMEBOX0_EX;
  72                 break;
  73         case 1:
  74                 box_reg = REG_HMEBOX1;
  75                 box_ex_reg = REG_HMEBOX1_EX;
  76                 break;
  77         case 2:
  78                 box_reg = REG_HMEBOX2;
  79                 box_ex_reg = REG_HMEBOX2_EX;
  80                 break;
  81         case 3:
  82                 box_reg = REG_HMEBOX3;
  83                 box_ex_reg = REG_HMEBOX3_EX;
  84                 break;
  85         default:
  86                 WARN(1, "invalid h2c mail box number\n");
  87                 goto out;
  88         }
  89
  90         h2c_wait = 20;
  91         do {
  92                 box_state = rtw_read8(rtwdev, REG_HMETFR);
  93         } while ((box_state >> box) & 0x1 && --h2c_wait > 0);
  94
  95         if (!h2c_wait) {
  96                 rtw_err(rtwdev, "failed to send h2c command\n");
  97                 goto out;
  98         }
  99
 100         for (idx = 0; idx < 4; idx++)
 101                 rtw_write8(rtwdev, box_reg + idx, h2c[idx]);
 102         for (idx = 0; idx < 4; idx++)
 103                 rtw_write8(rtwdev, box_ex_reg + idx, h2c[idx + 4]);
 104
 105         if (++rtwdev->h2c.last_box_num >= 4)
 106                 rtwdev->h2c.last_box_num = 0;
 107
 108 out:
 109         spin_unlock(&rtwdev->h2c.lock);
 110 }
 111
 112 static void rtw_fw_send_h2c_packet(struct rtw_dev *rtwdev, u8 *h2c_pkt)
 113 {
 114         int ret;
 115
 116         spin_lock(&rtwdev->h2c.lock);
 117
 118         FW_OFFLOAD_H2C_SET_SEQ_NUM(h2c_pkt, rtwdev->h2c.seq);
 119         ret = rtw_hci_write_data_h2c(rtwdev, h2c_pkt, H2C_PKT_SIZE);
 120         if (ret)
 121                 rtw_err(rtwdev, "failed to send h2c packet\n");
 122         rtwdev->h2c.seq++;
 123
 124         spin_unlock(&rtwdev->h2c.lock);
 125 }
 126
 127 void
 128 rtw_fw_send_general_info(struct rtw_dev *rtwdev)
 129 {
 130         struct rtw_fifo_conf *fifo = &rtwdev->fifo;
 131         u8 h2c_pkt[H2C_PKT_SIZE] = {0};
 132         u16 total_size = H2C_PKT_HDR_SIZE + 4;
 133
 134         rtw_h2c_pkt_set_header(h2c_pkt, H2C_PKT_GENERAL_INFO);
 135
 136         SET_PKT_H2C_TOTAL_LEN(h2c_pkt, total_size);
 137
 138         GENERAL_INFO_SET_FW_TX_BOUNDARY(h2c_pkt,
 139                                         fifo->rsvd_fw_txbuf_addr -
 140                                         fifo->rsvd_boundary);
 141
 142         rtw_fw_send_h2c_packet(rtwdev, h2c_pkt);
 143 }
 144
 145 void
 146 rtw_fw_send_phydm_info(struct rtw_dev *rtwdev)
 147 {
 148         struct rtw_hal *hal = &rtwdev->hal;
 149         struct rtw_efuse *efuse = &rtwdev->efuse;
 150         u8 h2c_pkt[H2C_PKT_SIZE] = {0};
 151         u16 total_size = H2C_PKT_HDR_SIZE + 8;
 152         u8 fw_rf_type = 0;
 153
 154         if (hal->rf_type == RF_1T1R)
 155                 fw_rf_type = FW_RF_1T1R;
 156         else if (hal->rf_type == RF_2T2R)
 157                 fw_rf_type = FW_RF_2T2R;
 158
 159         rtw_h2c_pkt_set_header(h2c_pkt, H2C_PKT_PHYDM_INFO);
 160
 161         SET_PKT_H2C_TOTAL_LEN(h2c_pkt, total_size);
 162         PHYDM_INFO_SET_REF_TYPE(h2c_pkt, efuse->rfe_option);
 163         PHYDM_INFO_SET_RF_TYPE(h2c_pkt, fw_rf_type);
 164         PHYDM_INFO_SET_CUT_VER(h2c_pkt, hal->cut_version);
 165         PHYDM_INFO_SET_RX_ANT_STATUS(h2c_pkt, hal->antenna_tx);
 166         PHYDM_INFO_SET_TX_ANT_STATUS(h2c_pkt, hal->antenna_rx);
 167
 168         rtw_fw_send_h2c_packet(rtwdev, h2c_pkt);
 169 }
 170
 171 void rtw_fw_do_iqk(struct rtw_dev *rtwdev, struct rtw_iqk_para *para)
 172 {
 173         u8 h2c_pkt[H2C_PKT_SIZE] = {0};
 174         u16 total_size = H2C_PKT_HDR_SIZE + 1;
 175
 176         rtw_h2c_pkt_set_header(h2c_pkt, H2C_PKT_IQK);
 177         SET_PKT_H2C_TOTAL_LEN(h2c_pkt, total_size);
 178         IQK_SET_CLEAR(h2c_pkt, para->clear);
 179         IQK_SET_SEGMENT_IQK(h2c_pkt, para->segment_iqk);
 180
 181         rtw_fw_send_h2c_packet(rtwdev, h2c_pkt);
 182 }
 183
 184 void rtw_fw_send_rssi_info(struct rtw_dev *rtwdev, struct rtw_sta_info *si)
 185 {
 186         u8 h2c_pkt[H2C_PKT_SIZE] = {0};
 187         u8 rssi = ewma_rssi_read(&si->avg_rssi);
 188         bool stbc_en = si->stbc_en ? true : false;
 189
 190         SET_H2C_CMD_ID_CLASS(h2c_pkt, H2C_CMD_RSSI_MONITOR);
 191
 192         SET_RSSI_INFO_MACID(h2c_pkt, si->mac_id);
 193         SET_RSSI_INFO_RSSI(h2c_pkt, rssi);
 194         SET_RSSI_INFO_STBC(h2c_pkt, stbc_en);
 195
 196         rtw_fw_send_h2c_command(rtwdev, h2c_pkt);
 197 }
 198
 199 void rtw_fw_send_ra_info(struct rtw_dev *rtwdev, struct rtw_sta_info *si)
 200 {
 201         u8 h2c_pkt[H2C_PKT_SIZE] = {0};
 202         bool no_update = si->updated;
 203         bool disable_pt = true;
 204
 205         SET_H2C_CMD_ID_CLASS(h2c_pkt, H2C_CMD_RA_INFO);
 206
 207         SET_RA_INFO_MACID(h2c_pkt, si->mac_id);
 208         SET_RA_INFO_RATE_ID(h2c_pkt, si->rate_id);
 209         SET_RA_INFO_INIT_RA_LVL(h2c_pkt, si->init_ra_lv);
 210         SET_RA_INFO_SGI_EN(h2c_pkt, si->sgi_enable);
 211         SET_RA_INFO_BW_MODE(h2c_pkt, si->bw_mode);
 212         SET_RA_INFO_LDPC(h2c_pkt, si->ldpc_en);
 213         SET_RA_INFO_NO_UPDATE(h2c_pkt, no_update);
 214         SET_RA_INFO_VHT_EN(h2c_pkt, si->vht_enable);
 215         SET_RA_INFO_DIS_PT(h2c_pkt, disable_pt);
 216         SET_RA_INFO_RA_MASK0(h2c_pkt, (si->ra_mask & 0xff));
 217         SET_RA_INFO_RA_MASK1(h2c_pkt, (si->ra_mask & 0xff00) >> 8);
 218         SET_RA_INFO_RA_MASK2(h2c_pkt, (si->ra_mask & 0xff0000) >> 16);
 219         SET_RA_INFO_RA_MASK3(h2c_pkt, (si->ra_mask & 0xff000000) >> 24);
 220
 221         si->init_ra_lv = 0;
 222         si->updated = true;
 223
 224         rtw_fw_send_h2c_command(rtwdev, h2c_pkt);
 225 }
 226
 227 void rtw_fw_media_status_report(struct rtw_dev *rtwdev, u8 mac_id, bool connect)
 228 {
 229         u8 h2c_pkt[H2C_PKT_SIZE] = {0};
 230
 231         SET_H2C_CMD_ID_CLASS(h2c_pkt, H2C_CMD_MEDIA_STATUS_RPT);
 232         MEDIA_STATUS_RPT_SET_OP_MODE(h2c_pkt, connect);
 233         MEDIA_STATUS_RPT_SET_MACID(h2c_pkt, mac_id);
 234
 235         rtw_fw_send_h2c_command(rtwdev, h2c_pkt);
 236 }
 237
 238 void rtw_fw_set_pwr_mode(struct rtw_dev *rtwdev)
 239 {
 240         struct rtw_lps_conf *conf = &rtwdev->lps_conf;
 241         u8 h2c_pkt[H2C_PKT_SIZE] = {0};
 242
 243         SET_H2C_CMD_ID_CLASS(h2c_pkt, H2C_CMD_SET_PWR_MODE);
 244
 245         SET_PWR_MODE_SET_MODE(h2c_pkt, conf->mode);
 246         SET_PWR_MODE_SET_RLBM(h2c_pkt, conf->rlbm);
 247         SET_PWR_MODE_SET_SMART_PS(h2c_pkt, conf->smart_ps);
 248         SET_PWR_MODE_SET_AWAKE_INTERVAL(h2c_pkt, conf->awake_interval);
 249         SET_PWR_MODE_SET_PORT_ID(h2c_pkt, conf->port_id);
 250         SET_PWR_MODE_SET_PWR_STATE(h2c_pkt, conf->state);
 251
 252         rtw_fw_send_h2c_command(rtwdev, h2c_pkt);
 253 }
 254
 255 static u8 rtw_get_rsvd_page_location(struct rtw_dev *rtwdev,
 256                                      enum rtw_rsvd_packet_type type)
 257 {
 258         struct rtw_rsvd_page *rsvd_pkt;
 259         u8 location = 0;
 260
 261         list_for_each_entry(rsvd_pkt, &rtwdev->rsvd_page_list, list) {
 262                 if (type == rsvd_pkt->type)
 263                         location = rsvd_pkt->page;
 264         }
 265
 266         return location;
 267 }
 268
 269 void rtw_send_rsvd_page_h2c(struct rtw_dev *rtwdev)
 270 {
 271         u8 h2c_pkt[H2C_PKT_SIZE] = {0};
 272         u8 location = 0;
 273
 274         SET_H2C_CMD_ID_CLASS(h2c_pkt, H2C_CMD_RSVD_PAGE);
 275
 276         location = rtw_get_rsvd_page_location(rtwdev, RSVD_PROBE_RESP);
 277         *(h2c_pkt + 1) = location;
 278         rtw_dbg(rtwdev, RTW_DBG_FW, "RSVD_PROBE_RESP loc: %d\n", location);
 279
 280         location = rtw_get_rsvd_page_location(rtwdev, RSVD_PS_POLL);
 281         *(h2c_pkt + 2) = location;
 282         rtw_dbg(rtwdev, RTW_DBG_FW, "RSVD_PS_POLL loc: %d\n", location);
 283
 284         location = rtw_get_rsvd_page_location(rtwdev, RSVD_NULL);
 285         *(h2c_pkt + 3) = location;
 286         rtw_dbg(rtwdev, RTW_DBG_FW, "RSVD_NULL loc: %d\n", location);
 287
 288         location = rtw_get_rsvd_page_location(rtwdev, RSVD_QOS_NULL);
 289         *(h2c_pkt + 4) = location;
 290         rtw_dbg(rtwdev, RTW_DBG_FW, "RSVD_QOS_NULL loc: %d\n", location);
 291
 292         rtw_fw_send_h2c_command(rtwdev, h2c_pkt);
 293 }
 294
 295 static struct sk_buff *
 296 rtw_beacon_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 297 {
 298         struct sk_buff *skb_new;
 299
 300         if (vif->type != NL80211_IFTYPE_AP &&
 301             vif->type != NL80211_IFTYPE_ADHOC &&
 302             !ieee80211_vif_is_mesh(vif)) {
 303                 skb_new = alloc_skb(1, GFP_KERNEL);
 304                 if (!skb_new)
 305                         return NULL;
 306                 skb_put(skb_new, 1);
 307         } else {
 308                 skb_new = ieee80211_beacon_get(hw, vif);
 309         }
 310
 311         return skb_new;
 312 }
 313
 314 static struct sk_buff *rtw_get_rsvd_page_skb(struct ieee80211_hw *hw,
 315                                              struct ieee80211_vif *vif,
 316                                              enum rtw_rsvd_packet_type type)
 317 {
 318         struct sk_buff *skb_new;
 319
 320         switch (type) {
 321         case RSVD_BEACON:
 322                 skb_new = rtw_beacon_get(hw, vif);
 323                 break;
 324         case RSVD_PS_POLL:
 325                 skb_new = ieee80211_pspoll_get(hw, vif);
 326                 break;
 327         case RSVD_PROBE_RESP:
 328                 skb_new = ieee80211_proberesp_get(hw, vif);
 329                 break;
 330         case RSVD_NULL:
 331                 skb_new = ieee80211_nullfunc_get(hw, vif, false);
 332                 break;
 333         case RSVD_QOS_NULL:
 334                 skb_new = ieee80211_nullfunc_get(hw, vif, true);
 335                 break;
 336         default:
 337                 return NULL;
 338         }
 339
 340         if (!skb_new)
 341                 return NULL;
 342
 343         return skb_new;
 344 }
 345
 346 static void rtw_fill_rsvd_page_desc(struct rtw_dev *rtwdev, struct sk_buff *skb)
 347 {
 348         struct rtw_tx_pkt_info pkt_info;
 349         struct rtw_chip_info *chip = rtwdev->chip;
 350         u8 *pkt_desc;
 351
 352         memset(&pkt_info, 0, sizeof(pkt_info));
 353         rtw_rsvd_page_pkt_info_update(rtwdev, &pkt_info, skb);
 354         pkt_desc = skb_push(skb, chip->tx_pkt_desc_sz);
 355         memset(pkt_desc, 0, chip->tx_pkt_desc_sz);
 356         rtw_tx_fill_tx_desc(&pkt_info, skb);
 357 }
 358
 359 static inline u8 rtw_len_to_page(unsigned int len, u8 page_size)
 360 {
 361         return DIV_ROUND_UP(len, page_size);
 362 }
 363
 364 static void rtw_rsvd_page_list_to_buf(struct rtw_dev *rtwdev, u8 page_size,
 365                                       u8 page_margin, u32 page, u8 *buf,
 366                                       struct rtw_rsvd_page *rsvd_pkt)
 367 {
 368         struct sk_buff *skb = rsvd_pkt->skb;
 369
 370         if (rsvd_pkt->add_txdesc)
 371                 rtw_fill_rsvd_page_desc(rtwdev, skb);
 372
 373         if (page >= 1)
 374                 memcpy(buf + page_margin + page_size * (page - 1),
 375                        skb->data, skb->len);
 376         else
 377                 memcpy(buf, skb->data, skb->len);
 378 }
 379
 380 void rtw_add_rsvd_page(struct rtw_dev *rtwdev, enum rtw_rsvd_packet_type type,
 381                        bool txdesc)
 382 {
 383         struct rtw_rsvd_page *rsvd_pkt;
 384
 385         lockdep_assert_held(&rtwdev->mutex);
 386
 387         list_for_each_entry(rsvd_pkt, &rtwdev->rsvd_page_list, list) {
 388                 if (rsvd_pkt->type == type)
 389                         return;
 390         }
 391
 392         rsvd_pkt = kmalloc(sizeof(*rsvd_pkt), GFP_KERNEL);
 393         if (!rsvd_pkt)
 394                 return;
 395
 396         rsvd_pkt->type = type;
 397         rsvd_pkt->add_txdesc = txdesc;
 398         list_add_tail(&rsvd_pkt->list, &rtwdev->rsvd_page_list);
 399 }
 400
 401 void rtw_reset_rsvd_page(struct rtw_dev *rtwdev)
 402 {
 403         struct rtw_rsvd_page *rsvd_pkt, *tmp;
 404
 405         lockdep_assert_held(&rtwdev->mutex);
 406
 407         list_for_each_entry_safe(rsvd_pkt, tmp, &rtwdev->rsvd_page_list, list) {
 408                 if (rsvd_pkt->type == RSVD_BEACON)
 409                         continue;
 410                 list_del(&rsvd_pkt->list);
 411                 kfree(rsvd_pkt);
 412         }
 413 }
 414
 415 int rtw_fw_write_data_rsvd_page(struct rtw_dev *rtwdev, u16 pg_addr,
 416                                 u8 *buf, u32 size)
 417 {
 418         u8 bckp[2];
 419         u8 val;
 420         u16 rsvd_pg_head;
 421         int ret;
 422
 423         lockdep_assert_held(&rtwdev->mutex);
 424
 425         if (!size)
 426                 return -EINVAL;
 427
 428         pg_addr &= BIT_MASK_BCN_HEAD_1_V1;
 429         rtw_write16(rtwdev, REG_FIFOPAGE_CTRL_2, pg_addr | BIT_BCN_VALID_V1);
 430
 431         val = rtw_read8(rtwdev, REG_CR + 1);
 432         bckp[0] = val;
 433         val |= BIT_ENSWBCN >> 8;
 434         rtw_write8(rtwdev, REG_CR + 1, val);
 435
 436         val = rtw_read8(rtwdev, REG_FWHW_TXQ_CTRL + 2);
 437         bckp[1] = val;
 438         val &= ~(BIT_EN_BCNQ_DL >> 16);
 439         rtw_write8(rtwdev, REG_FWHW_TXQ_CTRL + 2, val);
 440
 441         ret = rtw_hci_write_data_rsvd_page(rtwdev, buf, size);
 442         if (ret) {
 443                 rtw_err(rtwdev, "failed to write data to rsvd page\n");
 444                 goto restore;
 445         }
 446
 447         if (!check_hw_ready(rtwdev, REG_FIFOPAGE_CTRL_2, BIT_BCN_VALID_V1, 1)) {
 448                 rtw_err(rtwdev, "error beacon valid\n");
 449                 ret = -EBUSY;
 450         }
 451
 452 restore:
 453         rsvd_pg_head = rtwdev->fifo.rsvd_boundary;
 454         rtw_write16(rtwdev, REG_FIFOPAGE_CTRL_2,
 455                     rsvd_pg_head | BIT_BCN_VALID_V1);
 456         rtw_write8(rtwdev, REG_FWHW_TXQ_CTRL + 2, bckp[1]);
 457         rtw_write8(rtwdev, REG_CR + 1, bckp[0]);
 458
 459         return ret;
 460 }
 461
 462 static int rtw_download_drv_rsvd_page(struct rtw_dev *rtwdev, u8 *buf, u32 size)
 463 {
 464         u32 pg_size;
 465         u32 pg_num = 0;
 466         u16 pg_addr = 0;
 467
 468         pg_size = rtwdev->chip->page_size;
 469         pg_num = size / pg_size + ((size & (pg_size - 1)) ? 1 : 0);
 470         if (pg_num > rtwdev->fifo.rsvd_drv_pg_num)
 471                 return -ENOMEM;
 472
 473         pg_addr = rtwdev->fifo.rsvd_drv_addr;
 474
 475         return rtw_fw_write_data_rsvd_page(rtwdev, pg_addr, buf, size);
 476 }
 477
 478 static u8 *rtw_build_rsvd_page(struct rtw_dev *rtwdev,
 479                                struct ieee80211_vif *vif, u32 *size)
 480 {
 481         struct ieee80211_hw *hw = rtwdev->hw;
 482         struct rtw_chip_info *chip = rtwdev->chip;
 483         struct sk_buff *iter;
 484         struct rtw_rsvd_page *rsvd_pkt;
 485         u32 page = 0;
 486         u8 total_page = 0;
 487         u8 page_size, page_margin, tx_desc_sz;
 488         u8 *buf;
 489
 490         page_size = chip->page_size;
 491         tx_desc_sz = chip->tx_pkt_desc_sz;
 492         page_margin = page_size - tx_desc_sz;
 493
 494         list_for_each_entry(rsvd_pkt, &rtwdev->rsvd_page_list, list) {
 495                 iter = rtw_get_rsvd_page_skb(hw, vif, rsvd_pkt->type);
 496                 if (!iter) {
 497                         rtw_err(rtwdev, "fail to build rsvd packet\n");
 498                         goto release_skb;
 499                 }
 500                 rsvd_pkt->skb = iter;
 501                 rsvd_pkt->page = total_page;
 502                 if (rsvd_pkt->add_txdesc)
 503                         total_page += rtw_len_to_page(iter->len + tx_desc_sz,
 504                                                       page_size);
 505                 else
 506                         total_page += rtw_len_to_page(iter->len, page_size);
 507         }
 508
 509         if (total_page > rtwdev->fifo.rsvd_drv_pg_num) {
 510                 rtw_err(rtwdev, "rsvd page over size: %d\n", total_page);
 511                 goto release_skb;
 512         }
 513
 514         *size = (total_page - 1) * page_size + page_margin;
 515         buf = kzalloc(*size, GFP_KERNEL);
 516         if (!buf)
 517                 goto release_skb;
 518
 519         list_for_each_entry(rsvd_pkt, &rtwdev->rsvd_page_list, list) {
 520                 rtw_rsvd_page_list_to_buf(rtwdev, page_size, page_margin,
 521                                           page, buf, rsvd_pkt);
 522                 page += rtw_len_to_page(rsvd_pkt->skb->len, page_size);
 523         }
 524         list_for_each_entry(rsvd_pkt, &rtwdev->rsvd_page_list, list)
 525                 kfree_skb(rsvd_pkt->skb);
 526
 527         return buf;
 528
 529 release_skb:
 530         list_for_each_entry(rsvd_pkt, &rtwdev->rsvd_page_list, list)
 531                 kfree_skb(rsvd_pkt->skb);
 532
 533         return NULL;
 534 }
 535
 536 static int
 537 rtw_download_beacon(struct rtw_dev *rtwdev, struct ieee80211_vif *vif)
 538 {
 539         struct ieee80211_hw *hw = rtwdev->hw;
 540         struct sk_buff *skb;
 541         int ret = 0;
 542
 543         skb = rtw_beacon_get(hw, vif);
 544         if (!skb) {
 545                 rtw_err(rtwdev, "failed to get beacon skb\n");
 546                 ret = -ENOMEM;
 547                 goto out;
 548         }
 549
 550         ret = rtw_download_drv_rsvd_page(rtwdev, skb->data, skb->len);
 551         if (ret)
 552                 rtw_err(rtwdev, "failed to download drv rsvd page\n");
 553
 554         dev_kfree_skb(skb);
 555
 556 out:
 557         return ret;
 558 }
 559
 560 int rtw_fw_download_rsvd_page(struct rtw_dev *rtwdev, struct ieee80211_vif *vif)
 561 {
 562         u8 *buf;
 563         u32 size;
 564         int ret;
 565
 566         buf = rtw_build_rsvd_page(rtwdev, vif, &size);
 567         if (!buf) {
 568                 rtw_err(rtwdev, "failed to build rsvd page pkt\n");
 569                 return -ENOMEM;
 570         }
 571
 572         ret = rtw_download_drv_rsvd_page(rtwdev, buf, size);
 573         if (ret) {
 574                 rtw_err(rtwdev, "failed to download drv rsvd page\n");
 575                 goto free;
 576         }
 577
 578         ret = rtw_download_beacon(rtwdev, vif);
 579         if (ret) {
 580                 rtw_err(rtwdev, "failed to download beacon\n");
 581                 goto free;
 582         }
 583
 584 free:
 585         kfree(buf);
 586
 587         return ret;
 588 }
 589
 590 int rtw_dump_drv_rsvd_page(struct rtw_dev *rtwdev,
 591                            u32 offset, u32 size, u32 *buf)
 592 {
 593         struct rtw_fifo_conf *fifo = &rtwdev->fifo;
 594         u32 residue, i;
 595         u16 start_pg;
 596         u16 idx = 0;
 597         u16 ctl;
 598         u8 rcr;
 599
 600         if (size & 0x3) {
 601                 rtw_warn(rtwdev, "should be 4-byte aligned\n");
 602                 return -EINVAL;
 603         }
 604
 605         offset += fifo->rsvd_boundary << TX_PAGE_SIZE_SHIFT;
 606         residue = offset & (FIFO_PAGE_SIZE - 1);
 607         start_pg = offset >> FIFO_PAGE_SIZE_SHIFT;
 608         start_pg += RSVD_PAGE_START_ADDR;
 609
 610         rcr = rtw_read8(rtwdev, REG_RCR + 2);
 611         ctl = rtw_read16(rtwdev, REG_PKTBUF_DBG_CTRL) & 0xf000;
 612
 613         /* disable rx clock gate */
 614         rtw_write8(rtwdev, REG_RCR, rcr | BIT(3));
 615
 616         do {
 617                 rtw_write16(rtwdev, REG_PKTBUF_DBG_CTRL, start_pg | ctl);
 618
 619                 for (i = FIFO_DUMP_ADDR + residue;
 620                      i < FIFO_DUMP_ADDR + FIFO_PAGE_SIZE; i += 4) {
 621                         buf[idx++] = rtw_read32(rtwdev, i);
 622                         size -= 4;
 623                         if (size == 0)
 624                                 goto out;
 625                 }
 626
 627                 residue = 0;
 628                 start_pg++;
 629         } while (size);
 630
 631 out:
 632         rtw_write16(rtwdev, REG_PKTBUF_DBG_CTRL, ctl);
 633         rtw_write8(rtwdev, REG_RCR + 2, rcr);
 634         return 0;
 635 }