1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries. 4 * All rights reserved. 5 */ 6 7#include <linux/if_ether.h> 8#include <linux/ip.h> 9#include <net/dsfield.h> 10#include "cfg80211.h" 11#include "wlan_cfg.h" 12 13#define WAKE_UP_TRIAL_RETRY 10000 14 15static inline void acquire_bus(struct wilc *wilc, enum bus_acquire acquire) 16{ 17 mutex_lock(&wilc->hif_cs); 18 if (acquire == WILC_BUS_ACQUIRE_AND_WAKEUP && wilc->power_save_mode) 19 chip_wakeup(wilc); 20} 21 22static inline void release_bus(struct wilc *wilc, enum bus_release release) 23{ 24 if (release == WILC_BUS_RELEASE_ALLOW_SLEEP && wilc->power_save_mode) 25 chip_allow_sleep(wilc); 26 mutex_unlock(&wilc->hif_cs); 27} 28 29static void wilc_wlan_txq_remove(struct wilc *wilc, u8 q_num, 30 struct txq_entry_t *tqe) 31{ 32 list_del(&tqe->list); 33 wilc->txq_entries -= 1; 34 wilc->txq[q_num].count--; 35} 36 37static struct txq_entry_t * 38wilc_wlan_txq_remove_from_head(struct wilc *wilc, u8 q_num) 39{ 40 struct txq_entry_t *tqe = NULL; 41 unsigned long flags; 42 43 spin_lock_irqsave(&wilc->txq_spinlock, flags); 44 45 if (!list_empty(&wilc->txq[q_num].txq_head.list)) { 46 tqe = list_first_entry(&wilc->txq[q_num].txq_head.list, 47 struct txq_entry_t, list); 48 list_del(&tqe->list); 49 wilc->txq_entries -= 1; 50 wilc->txq[q_num].count--; 51 } 52 spin_unlock_irqrestore(&wilc->txq_spinlock, flags); 53 return tqe; 54} 55 56static void wilc_wlan_txq_add_to_tail(struct net_device *dev, u8 q_num, 57 struct txq_entry_t *tqe) 58{ 59 unsigned long flags; 60 struct wilc_vif *vif = netdev_priv(dev); 61 struct wilc *wilc = vif->wilc; 62 63 spin_lock_irqsave(&wilc->txq_spinlock, flags); 64 65 list_add_tail(&tqe->list, &wilc->txq[q_num].txq_head.list); 66 wilc->txq_entries += 1; 67 wilc->txq[q_num].count++; 68 69 spin_unlock_irqrestore(&wilc->txq_spinlock, flags); 70 71 complete(&wilc->txq_event); 72} 73 74static void wilc_wlan_txq_add_to_head(struct wilc_vif *vif, u8 q_num, 75 struct txq_entry_t *tqe) 76{ 77 unsigned long flags; 78 struct wilc *wilc = vif->wilc; 79 80 mutex_lock(&wilc->txq_add_to_head_cs); 81 82 spin_lock_irqsave(&wilc->txq_spinlock, flags); 83 84 list_add(&tqe->list, &wilc->txq[q_num].txq_head.list); 85 wilc->txq_entries += 1; 86 wilc->txq[q_num].count++; 87 88 spin_unlock_irqrestore(&wilc->txq_spinlock, flags); 89 mutex_unlock(&wilc->txq_add_to_head_cs); 90 complete(&wilc->txq_event); 91} 92 93#define NOT_TCP_ACK (-1) 94 95static inline void add_tcp_session(struct wilc_vif *vif, u32 src_prt, 96 u32 dst_prt, u32 seq) 97{ 98 struct tcp_ack_filter *f = &vif->ack_filter; 99 100 if (f->tcp_session < 2 * MAX_TCP_SESSION) { 101 f->ack_session_info[f->tcp_session].seq_num = seq; 102 f->ack_session_info[f->tcp_session].bigger_ack_num = 0; 103 f->ack_session_info[f->tcp_session].src_port = src_prt; 104 f->ack_session_info[f->tcp_session].dst_port = dst_prt; 105 f->tcp_session++; 106 } 107} 108 109static inline void update_tcp_session(struct wilc_vif *vif, u32 index, u32 ack) 110{ 111 struct tcp_ack_filter *f = &vif->ack_filter; 112 113 if (index < 2 * MAX_TCP_SESSION && 114 ack > f->ack_session_info[index].bigger_ack_num) 115 f->ack_session_info[index].bigger_ack_num = ack; 116} 117 118static inline void add_tcp_pending_ack(struct wilc_vif *vif, u32 ack, 119 u32 session_index, 120 struct txq_entry_t *txqe) 121{ 122 struct tcp_ack_filter *f = &vif->ack_filter; 123 u32 i = f->pending_base + f->pending_acks_idx; 124 125 if (i < MAX_PENDING_ACKS) { 126 f->pending_acks[i].ack_num = ack; 127 f->pending_acks[i].txqe = txqe; 128 f->pending_acks[i].session_index = session_index; 129 txqe->ack_idx = i; 130 f->pending_acks_idx++; 131 } 132} 133 134static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe) 135{ 136 void *buffer = tqe->buffer; 137 const struct ethhdr *eth_hdr_ptr = buffer; 138 int i; 139 unsigned long flags; 140 struct wilc_vif *vif = netdev_priv(dev); 141 struct wilc *wilc = vif->wilc; 142 struct tcp_ack_filter *f = &vif->ack_filter; 143 const struct iphdr *ip_hdr_ptr; 144 const struct tcphdr *tcp_hdr_ptr; 145 u32 ihl, total_length, data_offset; 146 147 spin_lock_irqsave(&wilc->txq_spinlock, flags); 148 149 if (eth_hdr_ptr->h_proto != htons(ETH_P_IP)) 150 goto out; 151 152 ip_hdr_ptr = buffer + ETH_HLEN; 153 154 if (ip_hdr_ptr->protocol != IPPROTO_TCP) 155 goto out; 156 157 ihl = ip_hdr_ptr->ihl << 2; 158 tcp_hdr_ptr = buffer + ETH_HLEN + ihl; 159 total_length = ntohs(ip_hdr_ptr->tot_len); 160 161 data_offset = tcp_hdr_ptr->doff << 2; 162 if (total_length == (ihl + data_offset)) { 163 u32 seq_no, ack_no; 164 165 seq_no = ntohl(tcp_hdr_ptr->seq); 166 ack_no = ntohl(tcp_hdr_ptr->ack_seq); 167 for (i = 0; i < f->tcp_session; i++) { 168 u32 j = f->ack_session_info[i].seq_num; 169 170 if (i < 2 * MAX_TCP_SESSION && 171 j == seq_no) { 172 update_tcp_session(vif, i, ack_no); 173 break; 174 } 175 } 176 if (i == f->tcp_session) 177 add_tcp_session(vif, 0, 0, seq_no); 178 179 add_tcp_pending_ack(vif, ack_no, i, tqe); 180 } 181 182out: 183 spin_unlock_irqrestore(&wilc->txq_spinlock, flags); 184} 185 186static void wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev) 187{ 188 struct wilc_vif *vif = netdev_priv(dev); 189 struct wilc *wilc = vif->wilc; 190 struct tcp_ack_filter *f = &vif->ack_filter; 191 u32 i = 0; 192 u32 dropped = 0; 193 unsigned long flags; 194 195 spin_lock_irqsave(&wilc->txq_spinlock, flags); 196 for (i = f->pending_base; 197 i < (f->pending_base + f->pending_acks_idx); i++) { 198 u32 index; 199 u32 bigger_ack_num; 200 201 if (i >= MAX_PENDING_ACKS) 202 break; 203 204 index = f->pending_acks[i].session_index; 205 206 if (index >= 2 * MAX_TCP_SESSION) 207 break; 208 209 bigger_ack_num = f->ack_session_info[index].bigger_ack_num; 210 211 if (f->pending_acks[i].ack_num < bigger_ack_num) { 212 struct txq_entry_t *tqe; 213 214 tqe = f->pending_acks[i].txqe; 215 if (tqe) { 216 wilc_wlan_txq_remove(wilc, tqe->q_num, tqe); 217 tqe->status = 1; 218 if (tqe->tx_complete_func) 219 tqe->tx_complete_func(tqe->priv, 220 tqe->status); 221 kfree(tqe); 222 dropped++; 223 } 224 } 225 } 226 f->pending_acks_idx = 0; 227 f->tcp_session = 0; 228 229 if (f->pending_base == 0) 230 f->pending_base = MAX_TCP_SESSION; 231 else 232 f->pending_base = 0; 233 234 spin_unlock_irqrestore(&wilc->txq_spinlock, flags); 235 236 while (dropped > 0) { 237 wait_for_completion_timeout(&wilc->txq_event, 238 msecs_to_jiffies(1)); 239 dropped--; 240 } 241} 242 243void wilc_enable_tcp_ack_filter(struct wilc_vif *vif, bool value) 244{ 245 vif->ack_filter.enabled = value; 246} 247 248static int wilc_wlan_txq_add_cfg_pkt(struct wilc_vif *vif, u8 *buffer, 249 u32 buffer_size) 250{ 251 struct txq_entry_t *tqe; 252 struct wilc *wilc = vif->wilc; 253 254 netdev_dbg(vif->ndev, "Adding config packet ...\n"); 255 if (wilc->quit) { 256 netdev_dbg(vif->ndev, "Return due to clear function\n"); 257 complete(&wilc->cfg_event); 258 return 0; 259 } 260 261 tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC); 262 if (!tqe) { 263 complete(&wilc->cfg_event); 264 return 0; 265 } 266 267 tqe->type = WILC_CFG_PKT; 268 tqe->buffer = buffer; 269 tqe->buffer_size = buffer_size; 270 tqe->tx_complete_func = NULL; 271 tqe->priv = NULL; 272 tqe->q_num = AC_VO_Q; 273 tqe->ack_idx = NOT_TCP_ACK; 274 tqe->vif = vif; 275 276 wilc_wlan_txq_add_to_head(vif, AC_VO_Q, tqe); 277 278 return 1; 279} 280 281static bool is_ac_q_limit(struct wilc *wl, u8 q_num) 282{ 283 u8 factors[NQUEUES] = {1, 1, 1, 1}; 284 u16 i; 285 unsigned long flags; 286 struct wilc_tx_queue_status *q = &wl->tx_q_limit; 287 u8 end_index; 288 u8 q_limit; 289 bool ret = false; 290 291 spin_lock_irqsave(&wl->txq_spinlock, flags); 292 if (!q->initialized) { 293 for (i = 0; i < AC_BUFFER_SIZE; i++) 294 q->buffer[i] = i % NQUEUES; 295 296 for (i = 0; i < NQUEUES; i++) { 297 q->cnt[i] = AC_BUFFER_SIZE * factors[i] / NQUEUES; 298 q->sum += q->cnt[i]; 299 } 300 q->end_index = AC_BUFFER_SIZE - 1; 301 q->initialized = 1; 302 } 303 304 end_index = q->end_index; 305 q->cnt[q->buffer[end_index]] -= factors[q->buffer[end_index]]; 306 q->cnt[q_num] += factors[q_num]; 307 q->sum += (factors[q_num] - factors[q->buffer[end_index]]); 308 309 q->buffer[end_index] = q_num; 310 if (end_index > 0) 311 q->end_index--; 312 else 313 q->end_index = AC_BUFFER_SIZE - 1; 314 315 if (!q->sum) 316 q_limit = 1; 317 else 318 q_limit = (q->cnt[q_num] * FLOW_CONTROL_UPPER_THRESHOLD / q->sum) + 1; 319 320 if (wl->txq[q_num].count <= q_limit) 321 ret = true; 322 323 spin_unlock_irqrestore(&wl->txq_spinlock, flags); 324 325 return ret; 326} 327 328static inline u8 ac_classify(struct wilc *wilc, struct sk_buff *skb) 329{ 330 u8 q_num = AC_BE_Q; 331 u8 dscp; 332 333 switch (skb->protocol) { 334 case htons(ETH_P_IP): 335 dscp = ipv4_get_dsfield(ip_hdr(skb)) & 0xfc; 336 break; 337 case htons(ETH_P_IPV6): 338 dscp = ipv6_get_dsfield(ipv6_hdr(skb)) & 0xfc; 339 break; 340 default: 341 return q_num; 342 } 343 344 switch (dscp) { 345 case 0x08: 346 case 0x20: 347 case 0x40: 348 q_num = AC_BK_Q; 349 break; 350 case 0x80: 351 case 0xA0: 352 case 0x28: 353 q_num = AC_VI_Q; 354 break; 355 case 0xC0: 356 case 0xD0: 357 case 0xE0: 358 case 0x88: 359 case 0xB8: 360 q_num = AC_VO_Q; 361 break; 362 } 363 364 return q_num; 365} 366 367static inline int ac_balance(struct wilc *wl, u8 *ratio) 368{ 369 u8 i, max_count = 0; 370 371 if (!ratio) 372 return -EINVAL; 373 374 for (i = 0; i < NQUEUES; i++) 375 if (wl->txq[i].fw.count > max_count) 376 max_count = wl->txq[i].fw.count; 377 378 for (i = 0; i < NQUEUES; i++) 379 ratio[i] = max_count - wl->txq[i].fw.count; 380 381 return 0; 382} 383 384static inline void ac_update_fw_ac_pkt_info(struct wilc *wl, u32 reg) 385{ 386 wl->txq[AC_BK_Q].fw.count = FIELD_GET(BK_AC_COUNT_FIELD, reg); 387 wl->txq[AC_BE_Q].fw.count = FIELD_GET(BE_AC_COUNT_FIELD, reg); 388 wl->txq[AC_VI_Q].fw.count = FIELD_GET(VI_AC_COUNT_FIELD, reg); 389 wl->txq[AC_VO_Q].fw.count = FIELD_GET(VO_AC_COUNT_FIELD, reg); 390 391 wl->txq[AC_BK_Q].fw.acm = FIELD_GET(BK_AC_ACM_STAT_FIELD, reg); 392 wl->txq[AC_BE_Q].fw.acm = FIELD_GET(BE_AC_ACM_STAT_FIELD, reg); 393 wl->txq[AC_VI_Q].fw.acm = FIELD_GET(VI_AC_ACM_STAT_FIELD, reg); 394 wl->txq[AC_VO_Q].fw.acm = FIELD_GET(VO_AC_ACM_STAT_FIELD, reg); 395} 396 397static inline u8 ac_change(struct wilc *wilc, u8 *ac) 398{ 399 do { 400 if (wilc->txq[*ac].fw.acm == 0) 401 return 0; 402 (*ac)++; 403 } while (*ac < NQUEUES); 404 405 return 1; 406} 407 408int wilc_wlan_txq_add_net_pkt(struct net_device *dev, 409 struct tx_complete_data *tx_data, u8 *buffer, 410 u32 buffer_size, 411 void (*tx_complete_fn)(void *, int)) 412{ 413 struct txq_entry_t *tqe; 414 struct wilc_vif *vif = netdev_priv(dev); 415 struct wilc *wilc; 416 u8 q_num; 417 418 wilc = vif->wilc; 419 420 if (wilc->quit) { 421 tx_complete_fn(tx_data, 0); 422 return 0; 423 } 424 425 if (!wilc->initialized) { 426 tx_complete_fn(tx_data, 0); 427 return 0; 428 } 429 430 tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC); 431 432 if (!tqe) { 433 tx_complete_fn(tx_data, 0); 434 return 0; 435 } 436 tqe->type = WILC_NET_PKT; 437 tqe->buffer = buffer; 438 tqe->buffer_size = buffer_size; 439 tqe->tx_complete_func = tx_complete_fn; 440 tqe->priv = tx_data; 441 tqe->vif = vif; 442 443 q_num = ac_classify(wilc, tx_data->skb); 444 tqe->q_num = q_num; 445 if (ac_change(wilc, &q_num)) { 446 tx_complete_fn(tx_data, 0); 447 kfree(tqe); 448 return 0; 449 } 450 451 if (is_ac_q_limit(wilc, q_num)) { 452 tqe->ack_idx = NOT_TCP_ACK; 453 if (vif->ack_filter.enabled) 454 tcp_process(dev, tqe); 455 wilc_wlan_txq_add_to_tail(dev, q_num, tqe); 456 } else { 457 tx_complete_fn(tx_data, 0); 458 kfree(tqe); 459 } 460 461 return wilc->txq_entries; 462} 463 464int wilc_wlan_txq_add_mgmt_pkt(struct net_device *dev, void *priv, u8 *buffer, 465 u32 buffer_size, 466 void (*tx_complete_fn)(void *, int)) 467{ 468 struct txq_entry_t *tqe; 469 struct wilc_vif *vif = netdev_priv(dev); 470 struct wilc *wilc; 471 472 wilc = vif->wilc; 473 474 if (wilc->quit) { 475 tx_complete_fn(priv, 0); 476 return 0; 477 } 478 479 if (!wilc->initialized) { 480 tx_complete_fn(priv, 0); 481 return 0; 482 } 483 tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC); 484 485 if (!tqe) { 486 tx_complete_fn(priv, 0); 487 return 0; 488 } 489 tqe->type = WILC_MGMT_PKT; 490 tqe->buffer = buffer; 491 tqe->buffer_size = buffer_size; 492 tqe->tx_complete_func = tx_complete_fn; 493 tqe->priv = priv; 494 tqe->q_num = AC_BE_Q; 495 tqe->ack_idx = NOT_TCP_ACK; 496 tqe->vif = vif; 497 wilc_wlan_txq_add_to_tail(dev, AC_VO_Q, tqe); 498 return 1; 499} 500 501static struct txq_entry_t *wilc_wlan_txq_get_first(struct wilc *wilc, u8 q_num) 502{ 503 struct txq_entry_t *tqe = NULL; 504 unsigned long flags; 505 506 spin_lock_irqsave(&wilc->txq_spinlock, flags); 507 508 if (!list_empty(&wilc->txq[q_num].txq_head.list)) 509 tqe = list_first_entry(&wilc->txq[q_num].txq_head.list, 510 struct txq_entry_t, list); 511 512 spin_unlock_irqrestore(&wilc->txq_spinlock, flags); 513 514 return tqe; 515} 516 517static struct txq_entry_t *wilc_wlan_txq_get_next(struct wilc *wilc, 518 struct txq_entry_t *tqe, 519 u8 q_num) 520{ 521 unsigned long flags; 522 523 spin_lock_irqsave(&wilc->txq_spinlock, flags); 524 525 if (!list_is_last(&tqe->list, &wilc->txq[q_num].txq_head.list)) 526 tqe = list_next_entry(tqe, list); 527 else 528 tqe = NULL; 529 spin_unlock_irqrestore(&wilc->txq_spinlock, flags); 530 531 return tqe; 532} 533 534static void wilc_wlan_rxq_add(struct wilc *wilc, struct rxq_entry_t *rqe) 535{ 536 if (wilc->quit) 537 return; 538 539 mutex_lock(&wilc->rxq_cs); 540 list_add_tail(&rqe->list, &wilc->rxq_head.list); 541 mutex_unlock(&wilc->rxq_cs); 542} 543 544static struct rxq_entry_t *wilc_wlan_rxq_remove(struct wilc *wilc) 545{ 546 struct rxq_entry_t *rqe = NULL; 547 548 mutex_lock(&wilc->rxq_cs); 549 if (!list_empty(&wilc->rxq_head.list)) { 550 rqe = list_first_entry(&wilc->rxq_head.list, struct rxq_entry_t, 551 list); 552 list_del(&rqe->list); 553 } 554 mutex_unlock(&wilc->rxq_cs); 555 return rqe; 556} 557 558void chip_allow_sleep(struct wilc *wilc) 559{ 560 u32 reg = 0; 561 const struct wilc_hif_func *hif_func = wilc->hif_func; 562 u32 wakeup_reg, wakeup_bit; 563 u32 to_host_from_fw_reg, to_host_from_fw_bit; 564 u32 from_host_to_fw_reg, from_host_to_fw_bit; 565 u32 trials = 100; 566 int ret; 567 568 if (wilc->io_type == WILC_HIF_SDIO) { 569 wakeup_reg = WILC_SDIO_WAKEUP_REG; 570 wakeup_bit = WILC_SDIO_WAKEUP_BIT; 571 from_host_to_fw_reg = WILC_SDIO_HOST_TO_FW_REG; 572 from_host_to_fw_bit = WILC_SDIO_HOST_TO_FW_BIT; 573 to_host_from_fw_reg = WILC_SDIO_FW_TO_HOST_REG; 574 to_host_from_fw_bit = WILC_SDIO_FW_TO_HOST_BIT; 575 } else { 576 wakeup_reg = WILC_SPI_WAKEUP_REG; 577 wakeup_bit = WILC_SPI_WAKEUP_BIT; 578 from_host_to_fw_reg = WILC_SPI_HOST_TO_FW_REG; 579 from_host_to_fw_bit = WILC_SPI_HOST_TO_FW_BIT; 580 to_host_from_fw_reg = WILC_SPI_FW_TO_HOST_REG; 581 to_host_from_fw_bit = WILC_SPI_FW_TO_HOST_BIT; 582 } 583 584 while (--trials) { 585 ret = hif_func->hif_read_reg(wilc, to_host_from_fw_reg, ®); 586 if (ret) 587 return; 588 if ((reg & to_host_from_fw_bit) == 0) 589 break; 590 } 591 if (!trials) 592 pr_warn("FW not responding\n"); 593 594 /* Clear bit 1 */ 595 ret = hif_func->hif_read_reg(wilc, wakeup_reg, ®); 596 if (ret) 597 return; 598 if (reg & wakeup_bit) { 599 reg &= ~wakeup_bit; 600 ret = hif_func->hif_write_reg(wilc, wakeup_reg, reg); 601 if (ret) 602 return; 603 } 604 605 ret = hif_func->hif_read_reg(wilc, from_host_to_fw_reg, ®); 606 if (ret) 607 return; 608 if (reg & from_host_to_fw_bit) { 609 reg &= ~from_host_to_fw_bit; 610 ret = hif_func->hif_write_reg(wilc, from_host_to_fw_reg, reg); 611 if (ret) 612 return; 613 614 } 615} 616EXPORT_SYMBOL_GPL(chip_allow_sleep); 617 618void chip_wakeup(struct wilc *wilc) 619{ 620 u32 ret = 0; 621 u32 clk_status_val = 0, trials = 0; 622 u32 wakeup_reg, wakeup_bit; 623 u32 clk_status_reg, clk_status_bit; 624 u32 from_host_to_fw_reg, from_host_to_fw_bit; 625 const struct wilc_hif_func *hif_func = wilc->hif_func; 626 627 if (wilc->io_type == WILC_HIF_SDIO) { 628 wakeup_reg = WILC_SDIO_WAKEUP_REG; 629 wakeup_bit = WILC_SDIO_WAKEUP_BIT; 630 clk_status_reg = WILC_SDIO_CLK_STATUS_REG; 631 clk_status_bit = WILC_SDIO_CLK_STATUS_BIT; 632 from_host_to_fw_reg = WILC_SDIO_HOST_TO_FW_REG; 633 from_host_to_fw_bit = WILC_SDIO_HOST_TO_FW_BIT; 634 } else { 635 wakeup_reg = WILC_SPI_WAKEUP_REG; 636 wakeup_bit = WILC_SPI_WAKEUP_BIT; 637 clk_status_reg = WILC_SPI_CLK_STATUS_REG; 638 clk_status_bit = WILC_SPI_CLK_STATUS_BIT; 639 from_host_to_fw_reg = WILC_SPI_HOST_TO_FW_REG; 640 from_host_to_fw_bit = WILC_SPI_HOST_TO_FW_BIT; 641 } 642 643 /* indicate host wakeup */ 644 ret = hif_func->hif_write_reg(wilc, from_host_to_fw_reg, 645 from_host_to_fw_bit); 646 if (ret) 647 return; 648 649 /* Set wake-up bit */ 650 ret = hif_func->hif_write_reg(wilc, wakeup_reg, 651 wakeup_bit); 652 if (ret) 653 return; 654 655 while (trials < WAKE_UP_TRIAL_RETRY) { 656 ret = hif_func->hif_read_reg(wilc, clk_status_reg, 657 &clk_status_val); 658 if (ret) { 659 pr_err("Bus error %d %x\n", ret, clk_status_val); 660 return; 661 } 662 if (clk_status_val & clk_status_bit) 663 break; 664 665 trials++; 666 } 667 if (trials >= WAKE_UP_TRIAL_RETRY) { 668 pr_err("Failed to wake-up the chip\n"); 669 return; 670 } 671 /* Sometimes spi fail to read clock regs after reading 672 * writing clockless registers 673 */ 674 if (wilc->io_type == WILC_HIF_SPI) 675 wilc->hif_func->hif_reset(wilc); 676} 677EXPORT_SYMBOL_GPL(chip_wakeup); 678 679void host_wakeup_notify(struct wilc *wilc) 680{ 681 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY); 682 wilc->hif_func->hif_write_reg(wilc, WILC_CORTUS_INTERRUPT_2, 1); 683 release_bus(wilc, WILC_BUS_RELEASE_ONLY); 684} 685EXPORT_SYMBOL_GPL(host_wakeup_notify); 686 687void host_sleep_notify(struct wilc *wilc) 688{ 689 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY); 690 wilc->hif_func->hif_write_reg(wilc, WILC_CORTUS_INTERRUPT_1, 1); 691 release_bus(wilc, WILC_BUS_RELEASE_ONLY); 692} 693EXPORT_SYMBOL_GPL(host_sleep_notify); 694 695int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count) 696{ 697 int i, entries = 0; 698 u8 k, ac; 699 u32 sum; 700 u32 reg; 701 u8 ac_desired_ratio[NQUEUES] = {0, 0, 0, 0}; 702 u8 ac_preserve_ratio[NQUEUES] = {1, 1, 1, 1}; 703 u8 *num_pkts_to_add; 704 u8 vmm_entries_ac[WILC_VMM_TBL_SIZE]; 705 u32 offset = 0; 706 bool max_size_over = 0, ac_exist = 0; 707 int vmm_sz = 0; 708 struct txq_entry_t *tqe_q[NQUEUES]; 709 int ret = 0; 710 int counter; 711 int timeout; 712 u32 *vmm_table = wilc->vmm_table; 713 u8 ac_pkt_num_to_chip[NQUEUES] = {0, 0, 0, 0}; 714 const struct wilc_hif_func *func; 715 int srcu_idx; 716 u8 *txb = wilc->tx_buffer; 717 struct wilc_vif *vif; 718 719 if (wilc->quit) 720 goto out_update_cnt; 721 722 if (ac_balance(wilc, ac_desired_ratio)) 723 return -EINVAL; 724 725 mutex_lock(&wilc->txq_add_to_head_cs); 726 727 srcu_idx = srcu_read_lock(&wilc->srcu); 728 wilc_for_each_vif(wilc, vif) 729 wilc_wlan_txq_filter_dup_tcp_ack(vif->ndev); 730 srcu_read_unlock(&wilc->srcu, srcu_idx); 731 732 for (ac = 0; ac < NQUEUES; ac++) 733 tqe_q[ac] = wilc_wlan_txq_get_first(wilc, ac); 734 735 i = 0; 736 sum = 0; 737 max_size_over = 0; 738 num_pkts_to_add = ac_desired_ratio; 739 do { 740 ac_exist = 0; 741 for (ac = 0; (ac < NQUEUES) && (!max_size_over); ac++) { 742 if (!tqe_q[ac]) 743 continue; 744 745 ac_exist = 1; 746 for (k = 0; (k < num_pkts_to_add[ac]) && 747 (!max_size_over) && tqe_q[ac]; k++) { 748 if (i >= (WILC_VMM_TBL_SIZE - 1)) { 749 max_size_over = 1; 750 break; 751 } 752 753 if (tqe_q[ac]->type == WILC_CFG_PKT) 754 vmm_sz = ETH_CONFIG_PKT_HDR_OFFSET; 755 else if (tqe_q[ac]->type == WILC_NET_PKT) 756 vmm_sz = ETH_ETHERNET_HDR_OFFSET; 757 else 758 vmm_sz = HOST_HDR_OFFSET; 759 760 vmm_sz += tqe_q[ac]->buffer_size; 761 vmm_sz = ALIGN(vmm_sz, 4); 762 763 if ((sum + vmm_sz) > WILC_TX_BUFF_SIZE) { 764 max_size_over = 1; 765 break; 766 } 767 vmm_table[i] = vmm_sz / 4; 768 if (tqe_q[ac]->type == WILC_CFG_PKT) 769 vmm_table[i] |= BIT(10); 770 771 cpu_to_le32s(&vmm_table[i]); 772 vmm_entries_ac[i] = ac; 773 774 i++; 775 sum += vmm_sz; 776 tqe_q[ac] = wilc_wlan_txq_get_next(wilc, 777 tqe_q[ac], 778 ac); 779 } 780 } 781 num_pkts_to_add = ac_preserve_ratio; 782 } while (!max_size_over && ac_exist); 783 784 if (i == 0) 785 goto out_unlock; 786 vmm_table[i] = 0x0; 787 788 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP); 789 counter = 0; 790 func = wilc->hif_func; 791 do { 792 ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®); 793 if (ret) 794 break; 795 796 if ((reg & 0x1) == 0) { 797 ac_update_fw_ac_pkt_info(wilc, reg); 798 break; 799 } 800 801 counter++; 802 if (counter > 200) { 803 counter = 0; 804 ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, 0); 805 break; 806 } 807 } while (!wilc->quit); 808 809 if (ret) 810 goto out_release_bus; 811 812 timeout = 200; 813 do { 814 ret = func->hif_block_tx(wilc, 815 WILC_VMM_TBL_RX_SHADOW_BASE, 816 (u8 *)vmm_table, 817 ((i + 1) * 4)); 818 if (ret) 819 break; 820 821 ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x2); 822 if (ret) 823 break; 824 825 do { 826 ret = func->hif_read_reg(wilc, WILC_HOST_VMM_CTL, ®); 827 if (ret) 828 break; 829 if (FIELD_GET(WILC_VMM_ENTRY_AVAILABLE, reg)) { 830 entries = FIELD_GET(WILC_VMM_ENTRY_COUNT, reg); 831 break; 832 } 833 } while (--timeout); 834 if (timeout <= 0) { 835 ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x0); 836 break; 837 } 838 839 if (ret) 840 break; 841 842 if (entries == 0) { 843 ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®); 844 if (ret) 845 break; 846 reg &= ~BIT(0); 847 ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, reg); 848 } 849 } while (0); 850 851 if (ret) 852 goto out_release_bus; 853 854 if (entries == 0) { 855 /* 856 * No VMM space available in firmware so retry to transmit 857 * the packet from tx queue. 858 */ 859 ret = WILC_VMM_ENTRY_FULL_RETRY; 860 goto out_release_bus; 861 } 862 863 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP); 864 865 offset = 0; 866 i = 0; 867 do { 868 struct txq_entry_t *tqe; 869 u32 header, buffer_offset; 870 char *bssid; 871 u8 mgmt_ptk = 0; 872 873 if (vmm_table[i] == 0 || vmm_entries_ac[i] >= NQUEUES) 874 break; 875 876 tqe = wilc_wlan_txq_remove_from_head(wilc, vmm_entries_ac[i]); 877 if (!tqe) 878 break; 879 880 ac_pkt_num_to_chip[vmm_entries_ac[i]]++; 881 vif = tqe->vif; 882 883 le32_to_cpus(&vmm_table[i]); 884 vmm_sz = FIELD_GET(WILC_VMM_BUFFER_SIZE, vmm_table[i]); 885 vmm_sz *= 4; 886 887 if (tqe->type == WILC_MGMT_PKT) 888 mgmt_ptk = 1; 889 890 header = (FIELD_PREP(WILC_VMM_HDR_TYPE, tqe->type) | 891 FIELD_PREP(WILC_VMM_HDR_MGMT_FIELD, mgmt_ptk) | 892 FIELD_PREP(WILC_VMM_HDR_PKT_SIZE, tqe->buffer_size) | 893 FIELD_PREP(WILC_VMM_HDR_BUFF_SIZE, vmm_sz)); 894 895 cpu_to_le32s(&header); 896 memcpy(&txb[offset], &header, 4); 897 if (tqe->type == WILC_CFG_PKT) { 898 buffer_offset = ETH_CONFIG_PKT_HDR_OFFSET; 899 } else if (tqe->type == WILC_NET_PKT) { 900 int prio = tqe->q_num; 901 902 bssid = tqe->vif->bssid; 903 buffer_offset = ETH_ETHERNET_HDR_OFFSET; 904 memcpy(&txb[offset + 4], &prio, sizeof(prio)); 905 memcpy(&txb[offset + 8], bssid, 6); 906 } else { 907 buffer_offset = HOST_HDR_OFFSET; 908 } 909 910 memcpy(&txb[offset + buffer_offset], 911 tqe->buffer, tqe->buffer_size); 912 offset += vmm_sz; 913 i++; 914 tqe->status = 1; 915 if (tqe->tx_complete_func) 916 tqe->tx_complete_func(tqe->priv, tqe->status); 917 if (tqe->ack_idx != NOT_TCP_ACK && 918 tqe->ack_idx < MAX_PENDING_ACKS) 919 vif->ack_filter.pending_acks[tqe->ack_idx].txqe = NULL; 920 kfree(tqe); 921 } while (--entries); 922 for (i = 0; i < NQUEUES; i++) 923 wilc->txq[i].fw.count += ac_pkt_num_to_chip[i]; 924 925 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP); 926 927 ret = func->hif_clear_int_ext(wilc, ENABLE_TX_VMM); 928 if (ret) 929 goto out_release_bus; 930 931 ret = func->hif_block_tx_ext(wilc, 0, txb, offset); 932 933out_release_bus: 934 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP); 935 936out_unlock: 937 mutex_unlock(&wilc->txq_add_to_head_cs); 938 939out_update_cnt: 940 *txq_count = wilc->txq_entries; 941 return ret; 942} 943 944static void wilc_wlan_handle_rx_buff(struct wilc *wilc, u8 *buffer, int size) 945{ 946 int offset = 0; 947 u32 header; 948 u32 pkt_len, pkt_offset, tp_len; 949 int is_cfg_packet; 950 u8 *buff_ptr; 951 952 do { 953 buff_ptr = buffer + offset; 954 header = get_unaligned_le32(buff_ptr); 955 956 is_cfg_packet = FIELD_GET(WILC_PKT_HDR_CONFIG_FIELD, header); 957 pkt_offset = FIELD_GET(WILC_PKT_HDR_OFFSET_FIELD, header); 958 tp_len = FIELD_GET(WILC_PKT_HDR_TOTAL_LEN_FIELD, header); 959 pkt_len = FIELD_GET(WILC_PKT_HDR_LEN_FIELD, header); 960 961 if (pkt_len == 0 || tp_len == 0) 962 break; 963 964 if (pkt_offset & IS_MANAGMEMENT) { 965 buff_ptr += HOST_HDR_OFFSET; 966 wilc_wfi_mgmt_rx(wilc, buff_ptr, pkt_len, 967 pkt_offset & IS_MGMT_AUTH_PKT); 968 } else { 969 if (!is_cfg_packet) { 970 wilc_frmw_to_host(wilc, buff_ptr, pkt_len, 971 pkt_offset); 972 } else { 973 struct wilc_cfg_rsp rsp; 974 975 buff_ptr += pkt_offset; 976 977 wilc_wlan_cfg_indicate_rx(wilc, buff_ptr, 978 pkt_len, 979 &rsp); 980 if (rsp.type == WILC_CFG_RSP) { 981 if (wilc->cfg_seq_no == rsp.seq_no) 982 complete(&wilc->cfg_event); 983 } else if (rsp.type == WILC_CFG_RSP_STATUS) { 984 wilc_mac_indicate(wilc); 985 } 986 } 987 } 988 offset += tp_len; 989 } while (offset < size); 990} 991 992static void wilc_wlan_handle_rxq(struct wilc *wilc) 993{ 994 int size; 995 u8 *buffer; 996 struct rxq_entry_t *rqe; 997 998 while (!wilc->quit) { 999 rqe = wilc_wlan_rxq_remove(wilc); 1000 if (!rqe) 1001 break; 1002 1003 buffer = rqe->buffer; 1004 size = rqe->buffer_size; 1005 wilc_wlan_handle_rx_buff(wilc, buffer, size); 1006 1007 kfree(rqe); 1008 } 1009 if (wilc->quit) 1010 complete(&wilc->cfg_event); 1011} 1012 1013static void wilc_unknown_isr_ext(struct wilc *wilc) 1014{ 1015 wilc->hif_func->hif_clear_int_ext(wilc, 0); 1016} 1017 1018static void wilc_wlan_handle_isr_ext(struct wilc *wilc, u32 int_status) 1019{ 1020 u32 offset = wilc->rx_buffer_offset; 1021 u8 *buffer = NULL; 1022 u32 size; 1023 u32 retries = 0; 1024 int ret = 0; 1025 struct rxq_entry_t *rqe; 1026 1027 size = FIELD_GET(WILC_INTERRUPT_DATA_SIZE, int_status) << 2; 1028 1029 while (!size && retries < 10) { 1030 wilc->hif_func->hif_read_size(wilc, &size); 1031 size = FIELD_GET(WILC_INTERRUPT_DATA_SIZE, size) << 2; 1032 retries++; 1033 } 1034 1035 if (size <= 0) 1036 return; 1037 1038 if (WILC_RX_BUFF_SIZE - offset < size) 1039 offset = 0; 1040 1041 buffer = &wilc->rx_buffer[offset]; 1042 1043 wilc->hif_func->hif_clear_int_ext(wilc, DATA_INT_CLR | ENABLE_RX_VMM); 1044 ret = wilc->hif_func->hif_block_rx_ext(wilc, 0, buffer, size); 1045 if (ret) 1046 return; 1047 1048 offset += size; 1049 wilc->rx_buffer_offset = offset; 1050 rqe = kmalloc(sizeof(*rqe), GFP_KERNEL); 1051 if (!rqe) 1052 return; 1053 1054 rqe->buffer = buffer; 1055 rqe->buffer_size = size; 1056 wilc_wlan_rxq_add(wilc, rqe); 1057 wilc_wlan_handle_rxq(wilc); 1058} 1059 1060void wilc_handle_isr(struct wilc *wilc) 1061{ 1062 u32 int_status; 1063 1064 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP); 1065 wilc->hif_func->hif_read_int(wilc, &int_status); 1066 1067 if (int_status & DATA_INT_EXT) 1068 wilc_wlan_handle_isr_ext(wilc, int_status); 1069 1070 if (!(int_status & (ALL_INT_EXT))) 1071 wilc_unknown_isr_ext(wilc); 1072 1073 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP); 1074} 1075EXPORT_SYMBOL_GPL(wilc_handle_isr); 1076 1077int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer, 1078 u32 buffer_size) 1079{ 1080 u32 offset; 1081 u32 addr, size, size2, blksz; 1082 u8 *dma_buffer; 1083 int ret = 0; 1084 u32 reg = 0; 1085 1086 blksz = BIT(12); 1087 1088 dma_buffer = kmalloc(blksz, GFP_KERNEL); 1089 if (!dma_buffer) 1090 return -EIO; 1091 1092 offset = 0; 1093 pr_debug("%s: Downloading firmware size = %d\n", __func__, buffer_size); 1094 1095 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP); 1096 1097 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®); 1098 reg &= ~BIT(10); 1099 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg); 1100 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®); 1101 if (reg & BIT(10)) 1102 pr_err("%s: Failed to reset\n", __func__); 1103 1104 release_bus(wilc, WILC_BUS_RELEASE_ONLY); 1105 do { 1106 addr = get_unaligned_le32(&buffer[offset]); 1107 size = get_unaligned_le32(&buffer[offset + 4]); 1108 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP); 1109 offset += 8; 1110 while (((int)size) && (offset < buffer_size)) { 1111 if (size <= blksz) 1112 size2 = size; 1113 else 1114 size2 = blksz; 1115 1116 memcpy(dma_buffer, &buffer[offset], size2); 1117 ret = wilc->hif_func->hif_block_tx(wilc, addr, 1118 dma_buffer, size2); 1119 if (ret) 1120 break; 1121 1122 addr += size2; 1123 offset += size2; 1124 size -= size2; 1125 } 1126 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP); 1127 1128 if (ret) { 1129 pr_err("%s Bus error\n", __func__); 1130 goto fail; 1131 } 1132 pr_debug("%s Offset = %d\n", __func__, offset); 1133 } while (offset < buffer_size); 1134 1135fail: 1136 1137 kfree(dma_buffer); 1138 1139 return ret; 1140} 1141 1142int wilc_wlan_start(struct wilc *wilc) 1143{ 1144 u32 reg = 0; 1145 int ret; 1146 u32 chipid; 1147 1148 if (wilc->io_type == WILC_HIF_SDIO) { 1149 reg = 0; 1150 reg |= BIT(3); 1151 } else if (wilc->io_type == WILC_HIF_SPI) { 1152 reg = 1; 1153 } 1154 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY); 1155 ret = wilc->hif_func->hif_write_reg(wilc, WILC_VMM_CORE_CFG, reg); 1156 if (ret) 1157 goto release; 1158 1159 reg = 0; 1160 if (wilc->io_type == WILC_HIF_SDIO && wilc->dev_irq_num) 1161 reg |= WILC_HAVE_SDIO_IRQ_GPIO; 1162 1163 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_1, reg); 1164 if (ret) 1165 goto release; 1166 1167 wilc->hif_func->hif_sync_ext(wilc, NUM_INT_EXT); 1168 1169 ret = wilc->hif_func->hif_read_reg(wilc, WILC_CHIPID, &chipid); 1170 if (ret) 1171 goto release; 1172 1173 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®); 1174 if ((reg & BIT(10)) == BIT(10)) { 1175 reg &= ~BIT(10); 1176 wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg); 1177 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®); 1178 } 1179 1180 reg |= BIT(10); 1181 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg); 1182 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®); 1183 1184release: 1185 release_bus(wilc, WILC_BUS_RELEASE_ONLY); 1186 return ret; 1187} 1188 1189int wilc_wlan_stop(struct wilc *wilc, struct wilc_vif *vif) 1190{ 1191 u32 reg = 0; 1192 int ret; 1193 1194 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP); 1195 1196 ret = wilc->hif_func->hif_read_reg(wilc, GLOBAL_MODE_CONTROL, ®); 1197 if (ret) 1198 goto release; 1199 1200 reg &= ~WILC_GLOBAL_MODE_ENABLE_WIFI; 1201 ret = wilc->hif_func->hif_write_reg(wilc, GLOBAL_MODE_CONTROL, reg); 1202 if (ret) 1203 goto release; 1204 1205 ret = wilc->hif_func->hif_read_reg(wilc, PWR_SEQ_MISC_CTRL, ®); 1206 if (ret) 1207 goto release; 1208 1209 reg &= ~WILC_PWR_SEQ_ENABLE_WIFI_SLEEP; 1210 ret = wilc->hif_func->hif_write_reg(wilc, PWR_SEQ_MISC_CTRL, reg); 1211 if (ret) 1212 goto release; 1213 1214 ret = wilc->hif_func->hif_read_reg(wilc, WILC_GP_REG_0, ®); 1215 if (ret) { 1216 netdev_err(vif->ndev, "Error while reading reg\n"); 1217 goto release; 1218 } 1219 1220 ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_0, 1221 (reg | WILC_ABORT_REQ_BIT)); 1222 if (ret) { 1223 netdev_err(vif->ndev, "Error while writing reg\n"); 1224 goto release; 1225 } 1226 1227 ret = 0; 1228release: 1229 /* host comm is disabled - we can't issue sleep command anymore: */ 1230 release_bus(wilc, WILC_BUS_RELEASE_ONLY); 1231 1232 return ret; 1233} 1234 1235void wilc_wlan_cleanup(struct net_device *dev) 1236{ 1237 struct txq_entry_t *tqe; 1238 struct rxq_entry_t *rqe; 1239 u8 ac; 1240 struct wilc_vif *vif = netdev_priv(dev); 1241 struct wilc *wilc = vif->wilc; 1242 1243 wilc->quit = 1; 1244 for (ac = 0; ac < NQUEUES; ac++) { 1245 while ((tqe = wilc_wlan_txq_remove_from_head(wilc, ac))) { 1246 if (tqe->tx_complete_func) 1247 tqe->tx_complete_func(tqe->priv, 0); 1248 kfree(tqe); 1249 } 1250 } 1251 1252 while ((rqe = wilc_wlan_rxq_remove(wilc))) 1253 kfree(rqe); 1254 1255 kfree(wilc->vmm_table); 1256 wilc->vmm_table = NULL; 1257 kfree(wilc->rx_buffer); 1258 wilc->rx_buffer = NULL; 1259 kfree(wilc->tx_buffer); 1260 wilc->tx_buffer = NULL; 1261 wilc->hif_func->hif_deinit(wilc); 1262} 1263 1264static int wilc_wlan_cfg_commit(struct wilc_vif *vif, int type, 1265 u32 drv_handler) 1266{ 1267 struct wilc *wilc = vif->wilc; 1268 struct wilc_cfg_frame *cfg = &wilc->cfg_frame; 1269 int t_len = wilc->cfg_frame_offset + sizeof(struct wilc_cfg_cmd_hdr); 1270 1271 if (type == WILC_CFG_SET) 1272 cfg->hdr.cmd_type = 'W'; 1273 else 1274 cfg->hdr.cmd_type = 'Q'; 1275 1276 cfg->hdr.seq_no = wilc->cfg_seq_no % 256; 1277 cfg->hdr.total_len = cpu_to_le16(t_len); 1278 cfg->hdr.driver_handler = cpu_to_le32(drv_handler); 1279 wilc->cfg_seq_no = cfg->hdr.seq_no; 1280 1281 if (!wilc_wlan_txq_add_cfg_pkt(vif, (u8 *)&cfg->hdr, t_len)) 1282 return -1; 1283 1284 return 0; 1285} 1286 1287int wilc_wlan_cfg_set(struct wilc_vif *vif, int start, u16 wid, u8 *buffer, 1288 u32 buffer_size, int commit, u32 drv_handler) 1289{ 1290 u32 offset; 1291 int ret_size; 1292 struct wilc *wilc = vif->wilc; 1293 1294 mutex_lock(&wilc->cfg_cmd_lock); 1295 1296 if (start) 1297 wilc->cfg_frame_offset = 0; 1298 1299 offset = wilc->cfg_frame_offset; 1300 ret_size = wilc_wlan_cfg_set_wid(wilc->cfg_frame.frame, offset, 1301 wid, buffer, buffer_size); 1302 offset += ret_size; 1303 wilc->cfg_frame_offset = offset; 1304 1305 if (!commit) { 1306 mutex_unlock(&wilc->cfg_cmd_lock); 1307 return ret_size; 1308 } 1309 1310 netdev_dbg(vif->ndev, "%s: seqno[%d]\n", __func__, wilc->cfg_seq_no); 1311 1312 if (wilc_wlan_cfg_commit(vif, WILC_CFG_SET, drv_handler)) 1313 ret_size = 0; 1314 1315 if (!wait_for_completion_timeout(&wilc->cfg_event, 1316 WILC_CFG_PKTS_TIMEOUT)) { 1317 netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__); 1318 ret_size = 0; 1319 } 1320 1321 wilc->cfg_frame_offset = 0; 1322 wilc->cfg_seq_no += 1; 1323 mutex_unlock(&wilc->cfg_cmd_lock); 1324 1325 return ret_size; 1326} 1327 1328int wilc_wlan_cfg_get(struct wilc_vif *vif, int start, u16 wid, int commit, 1329 u32 drv_handler) 1330{ 1331 u32 offset; 1332 int ret_size; 1333 struct wilc *wilc = vif->wilc; 1334 1335 mutex_lock(&wilc->cfg_cmd_lock); 1336 1337 if (start) 1338 wilc->cfg_frame_offset = 0; 1339 1340 offset = wilc->cfg_frame_offset; 1341 ret_size = wilc_wlan_cfg_get_wid(wilc->cfg_frame.frame, offset, wid); 1342 offset += ret_size; 1343 wilc->cfg_frame_offset = offset; 1344 1345 if (!commit) { 1346 mutex_unlock(&wilc->cfg_cmd_lock); 1347 return ret_size; 1348 } 1349 1350 if (wilc_wlan_cfg_commit(vif, WILC_CFG_QUERY, drv_handler)) 1351 ret_size = 0; 1352 1353 if (!wait_for_completion_timeout(&wilc->cfg_event, 1354 WILC_CFG_PKTS_TIMEOUT)) { 1355 netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__); 1356 ret_size = 0; 1357 } 1358 wilc->cfg_frame_offset = 0; 1359 wilc->cfg_seq_no += 1; 1360 mutex_unlock(&wilc->cfg_cmd_lock); 1361 1362 return ret_size; 1363} 1364 1365int wilc_send_config_pkt(struct wilc_vif *vif, u8 mode, struct wid *wids, 1366 u32 count) 1367{ 1368 int i; 1369 int ret = 0; 1370 u32 drv = wilc_get_vif_idx(vif); 1371 1372 if (mode == WILC_GET_CFG) { 1373 for (i = 0; i < count; i++) { 1374 if (!wilc_wlan_cfg_get(vif, !i, 1375 wids[i].id, 1376 (i == count - 1), 1377 drv)) { 1378 ret = -ETIMEDOUT; 1379 break; 1380 } 1381 } 1382 for (i = 0; i < count; i++) { 1383 wids[i].size = wilc_wlan_cfg_get_val(vif->wilc, 1384 wids[i].id, 1385 wids[i].val, 1386 wids[i].size); 1387 } 1388 } else if (mode == WILC_SET_CFG) { 1389 for (i = 0; i < count; i++) { 1390 if (!wilc_wlan_cfg_set(vif, !i, 1391 wids[i].id, 1392 wids[i].val, 1393 wids[i].size, 1394 (i == count - 1), 1395 drv)) { 1396 ret = -ETIMEDOUT; 1397 break; 1398 } 1399 } 1400 } 1401 1402 return ret; 1403} 1404 1405static int init_chip(struct net_device *dev) 1406{ 1407 u32 chipid; 1408 u32 reg; 1409 int ret = 0; 1410 struct wilc_vif *vif = netdev_priv(dev); 1411 struct wilc *wilc = vif->wilc; 1412 1413 acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP); 1414 1415 chipid = wilc_get_chipid(wilc, true); 1416 1417 if ((chipid & 0xfff) != 0xa0) { 1418 ret = wilc->hif_func->hif_read_reg(wilc, 1419 WILC_CORTUS_RESET_MUX_SEL, 1420 ®); 1421 if (ret) { 1422 netdev_err(dev, "fail read reg 0x1118\n"); 1423 goto release; 1424 } 1425 reg |= BIT(0); 1426 ret = wilc->hif_func->hif_write_reg(wilc, 1427 WILC_CORTUS_RESET_MUX_SEL, 1428 reg); 1429 if (ret) { 1430 netdev_err(dev, "fail write reg 0x1118\n"); 1431 goto release; 1432 } 1433 ret = wilc->hif_func->hif_write_reg(wilc, 1434 WILC_CORTUS_BOOT_REGISTER, 1435 WILC_CORTUS_BOOT_FROM_IRAM); 1436 if (ret) { 1437 netdev_err(dev, "fail write reg 0xc0000\n"); 1438 goto release; 1439 } 1440 } 1441 1442release: 1443 release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP); 1444 1445 return ret; 1446} 1447 1448u32 wilc_get_chipid(struct wilc *wilc, bool update) 1449{ 1450 u32 chipid = 0; 1451 u32 rfrevid = 0; 1452 1453 if (wilc->chipid == 0 || update) { 1454 wilc->hif_func->hif_read_reg(wilc, WILC_CHIPID, &chipid); 1455 wilc->hif_func->hif_read_reg(wilc, WILC_RF_REVISION_ID, 1456 &rfrevid); 1457 if (!is_wilc1000(chipid)) { 1458 wilc->chipid = 0; 1459 return wilc->chipid; 1460 } 1461 if (chipid == WILC_1000_BASE_ID_2A) { /* 0x1002A0 */ 1462 if (rfrevid != 0x1) 1463 chipid = WILC_1000_BASE_ID_2A_REV1; 1464 } else if (chipid == WILC_1000_BASE_ID_2B) { /* 0x1002B0 */ 1465 if (rfrevid == 0x4) 1466 chipid = WILC_1000_BASE_ID_2B_REV1; 1467 else if (rfrevid != 0x3) 1468 chipid = WILC_1000_BASE_ID_2B_REV2; 1469 } 1470 1471 wilc->chipid = chipid; 1472 } 1473 return wilc->chipid; 1474} 1475 1476int wilc_wlan_init(struct net_device *dev) 1477{ 1478 int ret = 0; 1479 struct wilc_vif *vif = netdev_priv(dev); 1480 struct wilc *wilc; 1481 1482 wilc = vif->wilc; 1483 1484 wilc->quit = 0; 1485 1486 if (!wilc->hif_func->hif_is_init(wilc)) { 1487 acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY); 1488 ret = wilc->hif_func->hif_init(wilc, false); 1489 release_bus(wilc, WILC_BUS_RELEASE_ONLY); 1490 if (ret) 1491 goto fail; 1492 } 1493 1494 if (!wilc->vmm_table) 1495 wilc->vmm_table = kcalloc(WILC_VMM_TBL_SIZE, sizeof(u32), GFP_KERNEL); 1496 1497 if (!wilc->vmm_table) { 1498 ret = -ENOBUFS; 1499 goto fail; 1500 } 1501 1502 if (!wilc->tx_buffer) 1503 wilc->tx_buffer = kmalloc(WILC_TX_BUFF_SIZE, GFP_KERNEL); 1504 1505 if (!wilc->tx_buffer) { 1506 ret = -ENOBUFS; 1507 goto fail; 1508 } 1509 1510 if (!wilc->rx_buffer) 1511 wilc->rx_buffer = kmalloc(WILC_RX_BUFF_SIZE, GFP_KERNEL); 1512 1513 if (!wilc->rx_buffer) { 1514 ret = -ENOBUFS; 1515 goto fail; 1516 } 1517 1518 if (init_chip(dev)) { 1519 ret = -EIO; 1520 goto fail; 1521 } 1522 1523 return 0; 1524 1525fail: 1526 kfree(wilc->vmm_table); 1527 wilc->vmm_table = NULL; 1528 kfree(wilc->rx_buffer); 1529 wilc->rx_buffer = NULL; 1530 kfree(wilc->tx_buffer); 1531 wilc->tx_buffer = NULL; 1532 1533 return ret; 1534} 1535