1/* 2 * drivers/net/wireless/mwl8k.c 3 * Driver for Marvell TOPDOG 802.11 Wireless cards 4 * 5 * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc. 6 * 7 * This file is licensed under the terms of the GNU General Public 8 * License version 2. This program is licensed "as is" without any 9 * warranty of any kind, whether express or implied. 10 */ 11 12#include <linux/interrupt.h> 13#include <linux/module.h> 14#include <linux/kernel.h> 15#include <linux/sched.h> 16#include <linux/spinlock.h> 17#include <linux/list.h> 18#include <linux/pci.h> 19#include <linux/delay.h> 20#include <linux/completion.h> 21#include <linux/etherdevice.h> 22#include <linux/slab.h> 23#include <net/mac80211.h> 24#include <linux/moduleparam.h> 25#include <linux/firmware.h> 26#include <linux/workqueue.h> 27 28#define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver" 29#define MWL8K_NAME KBUILD_MODNAME 30#define MWL8K_VERSION "0.13" 31 32/* Module parameters */ 33static bool ap_mode_default; 34module_param(ap_mode_default, bool, 0); 35MODULE_PARM_DESC(ap_mode_default, 36 "Set to 1 to make ap mode the default instead of sta mode"); 37 38/* Register definitions */ 39#define MWL8K_HIU_GEN_PTR 0x00000c10 40#define MWL8K_MODE_STA 0x0000005a 41#define MWL8K_MODE_AP 0x000000a5 42#define MWL8K_HIU_INT_CODE 0x00000c14 43#define MWL8K_FWSTA_READY 0xf0f1f2f4 44#define MWL8K_FWAP_READY 0xf1f2f4a5 45#define MWL8K_INT_CODE_CMD_FINISHED 0x00000005 46#define MWL8K_HIU_SCRATCH 0x00000c40 47 48/* Host->device communications */ 49#define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18 50#define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c 51#define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20 52#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24 53#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28 54#define MWL8K_H2A_INT_DUMMY (1 << 20) 55#define MWL8K_H2A_INT_RESET (1 << 15) 56#define MWL8K_H2A_INT_DOORBELL (1 << 1) 57#define MWL8K_H2A_INT_PPA_READY (1 << 0) 58 59/* Device->host communications */ 60#define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c 61#define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30 62#define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34 63#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38 64#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c 65#define MWL8K_A2H_INT_DUMMY (1 << 20) 66#define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14) 67#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11) 68#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10) 69#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7) 70#define MWL8K_A2H_INT_RADIO_ON (1 << 6) 71#define MWL8K_A2H_INT_RADIO_OFF (1 << 5) 72#define MWL8K_A2H_INT_MAC_EVENT (1 << 3) 73#define MWL8K_A2H_INT_OPC_DONE (1 << 2) 74#define MWL8K_A2H_INT_RX_READY (1 << 1) 75#define MWL8K_A2H_INT_TX_DONE (1 << 0) 76 77/* HW micro second timer register 78 * located at offset 0xA600. This 79 * will be used to timestamp tx 80 * packets. 81 */ 82 83#define MWL8K_HW_TIMER_REGISTER 0x0000a600 84#define BBU_RXRDY_CNT_REG 0x0000a860 85#define NOK_CCA_CNT_REG 0x0000a6a0 86#define BBU_AVG_NOISE_VAL 0x67 87 88#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \ 89 MWL8K_A2H_INT_CHNL_SWITCHED | \ 90 MWL8K_A2H_INT_QUEUE_EMPTY | \ 91 MWL8K_A2H_INT_RADAR_DETECT | \ 92 MWL8K_A2H_INT_RADIO_ON | \ 93 MWL8K_A2H_INT_RADIO_OFF | \ 94 MWL8K_A2H_INT_MAC_EVENT | \ 95 MWL8K_A2H_INT_OPC_DONE | \ 96 MWL8K_A2H_INT_RX_READY | \ 97 MWL8K_A2H_INT_TX_DONE | \ 98 MWL8K_A2H_INT_BA_WATCHDOG) 99 100#define MWL8K_RX_QUEUES 1 101#define MWL8K_TX_WMM_QUEUES 4 102#define MWL8K_MAX_AMPDU_QUEUES 8 103#define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES) 104#define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues) 105 106/* txpriorities are mapped with hw queues. 107 * Each hw queue has a txpriority. 108 */ 109#define TOTAL_HW_TX_QUEUES 8 110 111/* Each HW queue can have one AMPDU stream. 112 * But, because one of the hw queue is reserved, 113 * maximum AMPDU queues that can be created are 114 * one short of total tx queues. 115 */ 116#define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1) 117 118#define MWL8K_NUM_CHANS 18 119 120struct rxd_ops { 121 int rxd_size; 122 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr); 123 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len); 124 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status, 125 __le16 *qos, s8 *noise); 126}; 127 128struct mwl8k_device_info { 129 char *part_name; 130 char *helper_image; 131 char *fw_image_sta; 132 char *fw_image_ap; 133 struct rxd_ops *ap_rxd_ops; 134 u32 fw_api_ap; 135}; 136 137struct mwl8k_rx_queue { 138 int rxd_count; 139 140 /* hw receives here */ 141 int head; 142 143 /* refill descs here */ 144 int tail; 145 146 void *rxd; 147 dma_addr_t rxd_dma; 148 struct { 149 struct sk_buff *skb; 150 DEFINE_DMA_UNMAP_ADDR(dma); 151 } *buf; 152}; 153 154struct mwl8k_tx_queue { 155 /* hw transmits here */ 156 int head; 157 158 /* sw appends here */ 159 int tail; 160 161 unsigned int len; 162 struct mwl8k_tx_desc *txd; 163 dma_addr_t txd_dma; 164 struct sk_buff **skb; 165}; 166 167enum { 168 AMPDU_NO_STREAM, 169 AMPDU_STREAM_NEW, 170 AMPDU_STREAM_IN_PROGRESS, 171 AMPDU_STREAM_ACTIVE, 172}; 173 174struct mwl8k_ampdu_stream { 175 struct ieee80211_sta *sta; 176 u8 tid; 177 u8 state; 178 u8 idx; 179}; 180 181struct mwl8k_priv { 182 struct ieee80211_hw *hw; 183 struct pci_dev *pdev; 184 int irq; 185 186 struct mwl8k_device_info *device_info; 187 188 void __iomem *sram; 189 void __iomem *regs; 190 191 /* firmware */ 192 const struct firmware *fw_helper; 193 const struct firmware *fw_ucode; 194 195 /* hardware/firmware parameters */ 196 bool ap_fw; 197 struct rxd_ops *rxd_ops; 198 struct ieee80211_supported_band band_24; 199 struct ieee80211_channel channels_24[14]; 200 struct ieee80211_rate rates_24[13]; 201 struct ieee80211_supported_band band_50; 202 struct ieee80211_channel channels_50[9]; 203 struct ieee80211_rate rates_50[8]; 204 u32 ap_macids_supported; 205 u32 sta_macids_supported; 206 207 /* Ampdu stream information */ 208 u8 num_ampdu_queues; 209 spinlock_t stream_lock; 210 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES]; 211 struct work_struct watchdog_ba_handle; 212 213 /* firmware access */ 214 struct mutex fw_mutex; 215 struct task_struct *fw_mutex_owner; 216 struct task_struct *hw_restart_owner; 217 int fw_mutex_depth; 218 struct completion *hostcmd_wait; 219 220 atomic_t watchdog_event_pending; 221 222 /* lock held over TX and TX reap */ 223 spinlock_t tx_lock; 224 225 /* TX quiesce completion, protected by fw_mutex and tx_lock */ 226 struct completion *tx_wait; 227 228 /* List of interfaces. */ 229 u32 macids_used; 230 struct list_head vif_list; 231 232 /* power management status cookie from firmware */ 233 u32 *cookie; 234 dma_addr_t cookie_dma; 235 236 u16 num_mcaddrs; 237 u8 hw_rev; 238 u32 fw_rev; 239 u32 caps; 240 241 /* 242 * Running count of TX packets in flight, to avoid 243 * iterating over the transmit rings each time. 244 */ 245 int pending_tx_pkts; 246 247 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES]; 248 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES]; 249 u32 txq_offset[MWL8K_MAX_TX_QUEUES]; 250 251 bool radio_on; 252 bool radio_short_preamble; 253 bool sniffer_enabled; 254 bool wmm_enabled; 255 256 /* XXX need to convert this to handle multiple interfaces */ 257 bool capture_beacon; 258 u8 capture_bssid[ETH_ALEN]; 259 struct sk_buff *beacon_skb; 260 261 /* 262 * This FJ worker has to be global as it is scheduled from the 263 * RX handler. At this point we don't know which interface it 264 * belongs to until the list of bssids waiting to complete join 265 * is checked. 266 */ 267 struct work_struct finalize_join_worker; 268 269 /* Tasklet to perform TX reclaim. */ 270 struct tasklet_struct poll_tx_task; 271 272 /* Tasklet to perform RX. */ 273 struct tasklet_struct poll_rx_task; 274 275 /* Most recently reported noise in dBm */ 276 s8 noise; 277 278 /* 279 * preserve the queue configurations so they can be restored if/when 280 * the firmware image is swapped. 281 */ 282 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES]; 283 284 /* To perform the task of reloading the firmware */ 285 struct work_struct fw_reload; 286 bool hw_restart_in_progress; 287 288 /* async firmware loading state */ 289 unsigned fw_state; 290 char *fw_pref; 291 char *fw_alt; 292 bool is_8764; 293 struct completion firmware_loading_complete; 294 295 /* bitmap of running BSSes */ 296 u32 running_bsses; 297 298 /* ACS related */ 299 bool sw_scan_start; 300 struct ieee80211_channel *acs_chan; 301 unsigned long channel_time; 302 struct survey_info survey[MWL8K_NUM_CHANS]; 303}; 304 305#define MAX_WEP_KEY_LEN 13 306#define NUM_WEP_KEYS 4 307 308/* Per interface specific private data */ 309struct mwl8k_vif { 310 struct list_head list; 311 struct ieee80211_vif *vif; 312 313 /* Firmware macid for this vif. */ 314 int macid; 315 316 /* Non AMPDU sequence number assigned by driver. */ 317 u16 seqno; 318 319 /* Saved WEP keys */ 320 struct { 321 u8 enabled; 322 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN]; 323 } wep_key_conf[NUM_WEP_KEYS]; 324 325 /* BSSID */ 326 u8 bssid[ETH_ALEN]; 327 328 /* A flag to indicate is HW crypto is enabled for this bssid */ 329 bool is_hw_crypto_enabled; 330}; 331#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv)) 332#define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8)) 333 334struct tx_traffic_info { 335 u32 start_time; 336 u32 pkts; 337}; 338 339#define MWL8K_MAX_TID 8 340struct mwl8k_sta { 341 /* Index into station database. Returned by UPDATE_STADB. */ 342 u8 peer_id; 343 u8 is_ampdu_allowed; 344 struct tx_traffic_info tx_stats[MWL8K_MAX_TID]; 345}; 346#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv)) 347 348static const struct ieee80211_channel mwl8k_channels_24[] = { 349 { .band = NL80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, }, 350 { .band = NL80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, }, 351 { .band = NL80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, }, 352 { .band = NL80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, }, 353 { .band = NL80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, }, 354 { .band = NL80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, }, 355 { .band = NL80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, }, 356 { .band = NL80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, }, 357 { .band = NL80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, }, 358 { .band = NL80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, }, 359 { .band = NL80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, }, 360 { .band = NL80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, }, 361 { .band = NL80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, }, 362 { .band = NL80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, }, 363}; 364 365static const struct ieee80211_rate mwl8k_rates_24[] = { 366 { .bitrate = 10, .hw_value = 2, }, 367 { .bitrate = 20, .hw_value = 4, }, 368 { .bitrate = 55, .hw_value = 11, }, 369 { .bitrate = 110, .hw_value = 22, }, 370 { .bitrate = 220, .hw_value = 44, }, 371 { .bitrate = 60, .hw_value = 12, }, 372 { .bitrate = 90, .hw_value = 18, }, 373 { .bitrate = 120, .hw_value = 24, }, 374 { .bitrate = 180, .hw_value = 36, }, 375 { .bitrate = 240, .hw_value = 48, }, 376 { .bitrate = 360, .hw_value = 72, }, 377 { .bitrate = 480, .hw_value = 96, }, 378 { .bitrate = 540, .hw_value = 108, }, 379}; 380 381static const struct ieee80211_channel mwl8k_channels_50[] = { 382 { .band = NL80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, }, 383 { .band = NL80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, }, 384 { .band = NL80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, }, 385 { .band = NL80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, }, 386 { .band = NL80211_BAND_5GHZ, .center_freq = 5745, .hw_value = 149, }, 387 { .band = NL80211_BAND_5GHZ, .center_freq = 5765, .hw_value = 153, }, 388 { .band = NL80211_BAND_5GHZ, .center_freq = 5785, .hw_value = 157, }, 389 { .band = NL80211_BAND_5GHZ, .center_freq = 5805, .hw_value = 161, }, 390 { .band = NL80211_BAND_5GHZ, .center_freq = 5825, .hw_value = 165, }, 391}; 392 393static const struct ieee80211_rate mwl8k_rates_50[] = { 394 { .bitrate = 60, .hw_value = 12, }, 395 { .bitrate = 90, .hw_value = 18, }, 396 { .bitrate = 120, .hw_value = 24, }, 397 { .bitrate = 180, .hw_value = 36, }, 398 { .bitrate = 240, .hw_value = 48, }, 399 { .bitrate = 360, .hw_value = 72, }, 400 { .bitrate = 480, .hw_value = 96, }, 401 { .bitrate = 540, .hw_value = 108, }, 402}; 403 404/* Set or get info from Firmware */ 405#define MWL8K_CMD_GET 0x0000 406#define MWL8K_CMD_SET 0x0001 407#define MWL8K_CMD_SET_LIST 0x0002 408 409/* Firmware command codes */ 410#define MWL8K_CMD_CODE_DNLD 0x0001 411#define MWL8K_CMD_GET_HW_SPEC 0x0003 412#define MWL8K_CMD_SET_HW_SPEC 0x0004 413#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010 414#define MWL8K_CMD_GET_STAT 0x0014 415#define MWL8K_CMD_BBP_REG_ACCESS 0x001a 416#define MWL8K_CMD_RADIO_CONTROL 0x001c 417#define MWL8K_CMD_RF_TX_POWER 0x001e 418#define MWL8K_CMD_TX_POWER 0x001f 419#define MWL8K_CMD_RF_ANTENNA 0x0020 420#define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */ 421#define MWL8K_CMD_SET_PRE_SCAN 0x0107 422#define MWL8K_CMD_SET_POST_SCAN 0x0108 423#define MWL8K_CMD_SET_RF_CHANNEL 0x010a 424#define MWL8K_CMD_SET_AID 0x010d 425#define MWL8K_CMD_SET_RATE 0x0110 426#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111 427#define MWL8K_CMD_RTS_THRESHOLD 0x0113 428#define MWL8K_CMD_SET_SLOT 0x0114 429#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115 430#define MWL8K_CMD_SET_WMM_MODE 0x0123 431#define MWL8K_CMD_MIMO_CONFIG 0x0125 432#define MWL8K_CMD_USE_FIXED_RATE 0x0126 433#define MWL8K_CMD_ENABLE_SNIFFER 0x0150 434#define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */ 435#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203 436#define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205 437#define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */ 438#define MWL8K_CMD_BSS_START 0x1100 /* per-vif */ 439#define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */ 440#define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */ 441#define MWL8K_CMD_UPDATE_STADB 0x1123 442#define MWL8K_CMD_BASTREAM 0x1125 443 444#define MWL8K_LEGACY_5G_RATE_OFFSET \ 445 (ARRAY_SIZE(mwl8k_rates_24) - ARRAY_SIZE(mwl8k_rates_50)) 446 447static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize) 448{ 449 u16 command = le16_to_cpu(cmd); 450 451#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\ 452 snprintf(buf, bufsize, "%s", #x);\ 453 return buf;\ 454 } while (0) 455 switch (command & ~0x8000) { 456 MWL8K_CMDNAME(CODE_DNLD); 457 MWL8K_CMDNAME(GET_HW_SPEC); 458 MWL8K_CMDNAME(SET_HW_SPEC); 459 MWL8K_CMDNAME(MAC_MULTICAST_ADR); 460 MWL8K_CMDNAME(GET_STAT); 461 MWL8K_CMDNAME(RADIO_CONTROL); 462 MWL8K_CMDNAME(RF_TX_POWER); 463 MWL8K_CMDNAME(TX_POWER); 464 MWL8K_CMDNAME(RF_ANTENNA); 465 MWL8K_CMDNAME(SET_BEACON); 466 MWL8K_CMDNAME(SET_PRE_SCAN); 467 MWL8K_CMDNAME(SET_POST_SCAN); 468 MWL8K_CMDNAME(SET_RF_CHANNEL); 469 MWL8K_CMDNAME(SET_AID); 470 MWL8K_CMDNAME(SET_RATE); 471 MWL8K_CMDNAME(SET_FINALIZE_JOIN); 472 MWL8K_CMDNAME(RTS_THRESHOLD); 473 MWL8K_CMDNAME(SET_SLOT); 474 MWL8K_CMDNAME(SET_EDCA_PARAMS); 475 MWL8K_CMDNAME(SET_WMM_MODE); 476 MWL8K_CMDNAME(MIMO_CONFIG); 477 MWL8K_CMDNAME(USE_FIXED_RATE); 478 MWL8K_CMDNAME(ENABLE_SNIFFER); 479 MWL8K_CMDNAME(SET_MAC_ADDR); 480 MWL8K_CMDNAME(SET_RATEADAPT_MODE); 481 MWL8K_CMDNAME(BSS_START); 482 MWL8K_CMDNAME(SET_NEW_STN); 483 MWL8K_CMDNAME(UPDATE_ENCRYPTION); 484 MWL8K_CMDNAME(UPDATE_STADB); 485 MWL8K_CMDNAME(BASTREAM); 486 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP); 487 default: 488 snprintf(buf, bufsize, "0x%x", cmd); 489 } 490#undef MWL8K_CMDNAME 491 492 return buf; 493} 494 495/* Hardware and firmware reset */ 496static void mwl8k_hw_reset(struct mwl8k_priv *priv) 497{ 498 iowrite32(MWL8K_H2A_INT_RESET, 499 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 500 iowrite32(MWL8K_H2A_INT_RESET, 501 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 502 msleep(20); 503} 504 505/* Release fw image */ 506static void mwl8k_release_fw(const struct firmware **fw) 507{ 508 if (*fw == NULL) 509 return; 510 release_firmware(*fw); 511 *fw = NULL; 512} 513 514static void mwl8k_release_firmware(struct mwl8k_priv *priv) 515{ 516 mwl8k_release_fw(&priv->fw_ucode); 517 mwl8k_release_fw(&priv->fw_helper); 518} 519 520/* states for asynchronous f/w loading */ 521static void mwl8k_fw_state_machine(const struct firmware *fw, void *context); 522enum { 523 FW_STATE_INIT = 0, 524 FW_STATE_LOADING_PREF, 525 FW_STATE_LOADING_ALT, 526 FW_STATE_ERROR, 527}; 528 529/* Request fw image */ 530static int mwl8k_request_fw(struct mwl8k_priv *priv, 531 const char *fname, const struct firmware **fw, 532 bool nowait) 533{ 534 /* release current image */ 535 if (*fw != NULL) 536 mwl8k_release_fw(fw); 537 538 if (nowait) 539 return request_firmware_nowait(THIS_MODULE, 1, fname, 540 &priv->pdev->dev, GFP_KERNEL, 541 priv, mwl8k_fw_state_machine); 542 else 543 return request_firmware(fw, fname, &priv->pdev->dev); 544} 545 546static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image, 547 bool nowait) 548{ 549 struct mwl8k_device_info *di = priv->device_info; 550 int rc; 551 552 if (di->helper_image != NULL) { 553 if (nowait) 554 rc = mwl8k_request_fw(priv, di->helper_image, 555 &priv->fw_helper, true); 556 else 557 rc = mwl8k_request_fw(priv, di->helper_image, 558 &priv->fw_helper, false); 559 if (rc) 560 printk(KERN_ERR "%s: Error requesting helper fw %s\n", 561 pci_name(priv->pdev), di->helper_image); 562 563 if (rc || nowait) 564 return rc; 565 } 566 567 if (nowait) { 568 /* 569 * if we get here, no helper image is needed. Skip the 570 * FW_STATE_INIT state. 571 */ 572 priv->fw_state = FW_STATE_LOADING_PREF; 573 rc = mwl8k_request_fw(priv, fw_image, 574 &priv->fw_ucode, 575 true); 576 } else 577 rc = mwl8k_request_fw(priv, fw_image, 578 &priv->fw_ucode, false); 579 if (rc) { 580 printk(KERN_ERR "%s: Error requesting firmware file %s\n", 581 pci_name(priv->pdev), fw_image); 582 mwl8k_release_fw(&priv->fw_helper); 583 return rc; 584 } 585 586 return 0; 587} 588 589struct mwl8k_cmd_pkt { 590 __le16 code; 591 __le16 length; 592 __u8 seq_num; 593 __u8 macid; 594 __le16 result; 595 char payload[]; 596} __packed; 597 598/* 599 * Firmware loading. 600 */ 601static int 602mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length) 603{ 604 void __iomem *regs = priv->regs; 605 dma_addr_t dma_addr; 606 int loops; 607 608 dma_addr = dma_map_single(&priv->pdev->dev, data, length, 609 DMA_TO_DEVICE); 610 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) 611 return -ENOMEM; 612 613 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 614 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 615 iowrite32(MWL8K_H2A_INT_DOORBELL, 616 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 617 iowrite32(MWL8K_H2A_INT_DUMMY, 618 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 619 620 loops = 1000; 621 do { 622 u32 int_code; 623 if (priv->is_8764) { 624 int_code = ioread32(regs + 625 MWL8K_HIU_H2A_INTERRUPT_STATUS); 626 if (int_code == 0) 627 break; 628 } else { 629 int_code = ioread32(regs + MWL8K_HIU_INT_CODE); 630 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { 631 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 632 break; 633 } 634 } 635 cond_resched(); 636 udelay(1); 637 } while (--loops); 638 639 dma_unmap_single(&priv->pdev->dev, dma_addr, length, DMA_TO_DEVICE); 640 641 return loops ? 0 : -ETIMEDOUT; 642} 643 644static int mwl8k_load_fw_image(struct mwl8k_priv *priv, 645 const u8 *data, size_t length) 646{ 647 struct mwl8k_cmd_pkt *cmd; 648 int done; 649 int rc = 0; 650 651 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); 652 if (cmd == NULL) 653 return -ENOMEM; 654 655 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); 656 cmd->seq_num = 0; 657 cmd->macid = 0; 658 cmd->result = 0; 659 660 done = 0; 661 while (length) { 662 int block_size = length > 256 ? 256 : length; 663 664 memcpy(cmd->payload, data + done, block_size); 665 cmd->length = cpu_to_le16(block_size); 666 667 rc = mwl8k_send_fw_load_cmd(priv, cmd, 668 sizeof(*cmd) + block_size); 669 if (rc) 670 break; 671 672 done += block_size; 673 length -= block_size; 674 } 675 676 if (!rc) { 677 cmd->length = 0; 678 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); 679 } 680 681 kfree(cmd); 682 683 return rc; 684} 685 686static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, 687 const u8 *data, size_t length) 688{ 689 unsigned char *buffer; 690 int may_continue, rc = 0; 691 u32 done, prev_block_size; 692 693 buffer = kmalloc(1024, GFP_KERNEL); 694 if (buffer == NULL) 695 return -ENOMEM; 696 697 done = 0; 698 prev_block_size = 0; 699 may_continue = 1000; 700 while (may_continue > 0) { 701 u32 block_size; 702 703 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); 704 if (block_size & 1) { 705 block_size &= ~1; 706 may_continue--; 707 } else { 708 done += prev_block_size; 709 length -= prev_block_size; 710 } 711 712 if (block_size > 1024 || block_size > length) { 713 rc = -EOVERFLOW; 714 break; 715 } 716 717 if (length == 0) { 718 rc = 0; 719 break; 720 } 721 722 if (block_size == 0) { 723 rc = -EPROTO; 724 may_continue--; 725 udelay(1); 726 continue; 727 } 728 729 prev_block_size = block_size; 730 memcpy(buffer, data + done, block_size); 731 732 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); 733 if (rc) 734 break; 735 } 736 737 if (!rc && length != 0) 738 rc = -EREMOTEIO; 739 740 kfree(buffer); 741 742 return rc; 743} 744 745static int mwl8k_load_firmware(struct ieee80211_hw *hw) 746{ 747 struct mwl8k_priv *priv = hw->priv; 748 const struct firmware *fw = priv->fw_ucode; 749 int rc; 750 int loops; 751 752 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) { 753 const struct firmware *helper = priv->fw_helper; 754 755 if (helper == NULL) { 756 printk(KERN_ERR "%s: helper image needed but none " 757 "given\n", pci_name(priv->pdev)); 758 return -EINVAL; 759 } 760 761 rc = mwl8k_load_fw_image(priv, helper->data, helper->size); 762 if (rc) { 763 printk(KERN_ERR "%s: unable to load firmware " 764 "helper image\n", pci_name(priv->pdev)); 765 return rc; 766 } 767 msleep(20); 768 769 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 770 } else { 771 if (priv->is_8764) 772 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 773 else 774 rc = mwl8k_load_fw_image(priv, fw->data, fw->size); 775 } 776 777 if (rc) { 778 printk(KERN_ERR "%s: unable to load firmware image\n", 779 pci_name(priv->pdev)); 780 return rc; 781 } 782 783 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); 784 785 loops = 500000; 786 do { 787 u32 ready_code; 788 789 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE); 790 if (ready_code == MWL8K_FWAP_READY) { 791 priv->ap_fw = true; 792 break; 793 } else if (ready_code == MWL8K_FWSTA_READY) { 794 priv->ap_fw = false; 795 break; 796 } 797 798 cond_resched(); 799 udelay(1); 800 } while (--loops); 801 802 return loops ? 0 : -ETIMEDOUT; 803} 804 805 806/* DMA header used by firmware and hardware. */ 807struct mwl8k_dma_data { 808 __le16 fwlen; 809 struct ieee80211_hdr wh; 810 char data[]; 811} __packed __aligned(2); 812 813/* Routines to add/remove DMA header from skb. */ 814static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos) 815{ 816 struct mwl8k_dma_data *tr; 817 int hdrlen; 818 819 tr = (struct mwl8k_dma_data *)skb->data; 820 hdrlen = ieee80211_hdrlen(tr->wh.frame_control); 821 822 if (hdrlen != sizeof(tr->wh)) { 823 if (ieee80211_is_data_qos(tr->wh.frame_control)) { 824 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2); 825 *((__le16 *)(tr->data - 2)) = qos; 826 } else { 827 memmove(tr->data - hdrlen, &tr->wh, hdrlen); 828 } 829 } 830 831 if (hdrlen != sizeof(*tr)) 832 skb_pull(skb, sizeof(*tr) - hdrlen); 833} 834 835#define REDUCED_TX_HEADROOM 8 836 837static void 838mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb, 839 int head_pad, int tail_pad) 840{ 841 struct ieee80211_hdr *wh; 842 int hdrlen; 843 int reqd_hdrlen; 844 struct mwl8k_dma_data *tr; 845 846 /* 847 * Add a firmware DMA header; the firmware requires that we 848 * present a 2-byte payload length followed by a 4-address 849 * header (without QoS field), followed (optionally) by any 850 * WEP/ExtIV header (but only filled in for CCMP). 851 */ 852 wh = (struct ieee80211_hdr *)skb->data; 853 854 hdrlen = ieee80211_hdrlen(wh->frame_control); 855 856 /* 857 * Check if skb_resize is required because of 858 * tx_headroom adjustment. 859 */ 860 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts) 861 + REDUCED_TX_HEADROOM))) { 862 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) { 863 864 wiphy_err(priv->hw->wiphy, 865 "Failed to reallocate TX buffer\n"); 866 return; 867 } 868 skb->truesize += REDUCED_TX_HEADROOM; 869 } 870 871 reqd_hdrlen = sizeof(*tr) + head_pad; 872 873 if (hdrlen != reqd_hdrlen) 874 skb_push(skb, reqd_hdrlen - hdrlen); 875 876 if (ieee80211_is_data_qos(wh->frame_control)) 877 hdrlen -= IEEE80211_QOS_CTL_LEN; 878 879 tr = (struct mwl8k_dma_data *)skb->data; 880 if (wh != &tr->wh) 881 memmove(&tr->wh, wh, hdrlen); 882 if (hdrlen != sizeof(tr->wh)) 883 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen); 884 885 /* 886 * Firmware length is the length of the fully formed "802.11 887 * payload". That is, everything except for the 802.11 header. 888 * This includes all crypto material including the MIC. 889 */ 890 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad); 891} 892 893static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv, 894 struct sk_buff *skb) 895{ 896 struct ieee80211_hdr *wh; 897 struct ieee80211_tx_info *tx_info; 898 struct ieee80211_key_conf *key_conf; 899 int data_pad; 900 int head_pad = 0; 901 902 wh = (struct ieee80211_hdr *)skb->data; 903 904 tx_info = IEEE80211_SKB_CB(skb); 905 906 key_conf = NULL; 907 if (ieee80211_is_data(wh->frame_control)) 908 key_conf = tx_info->control.hw_key; 909 910 /* 911 * Make sure the packet header is in the DMA header format (4-address 912 * without QoS), and add head & tail padding when HW crypto is enabled. 913 * 914 * We have the following trailer padding requirements: 915 * - WEP: 4 trailer bytes (ICV) 916 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV) 917 * - CCMP: 8 trailer bytes (MIC) 918 */ 919 data_pad = 0; 920 if (key_conf != NULL) { 921 head_pad = key_conf->iv_len; 922 switch (key_conf->cipher) { 923 case WLAN_CIPHER_SUITE_WEP40: 924 case WLAN_CIPHER_SUITE_WEP104: 925 data_pad = 4; 926 break; 927 case WLAN_CIPHER_SUITE_TKIP: 928 data_pad = 12; 929 break; 930 case WLAN_CIPHER_SUITE_CCMP: 931 data_pad = 8; 932 break; 933 } 934 } 935 mwl8k_add_dma_header(priv, skb, head_pad, data_pad); 936} 937 938/* 939 * Packet reception for 88w8366/88w8764 AP firmware. 940 */ 941struct mwl8k_rxd_ap { 942 __le16 pkt_len; 943 __u8 sq2; 944 __u8 rate; 945 __le32 pkt_phys_addr; 946 __le32 next_rxd_phys_addr; 947 __le16 qos_control; 948 __le16 htsig2; 949 __le32 hw_rssi_info; 950 __le32 hw_noise_floor_info; 951 __u8 noise_floor; 952 __u8 pad0[3]; 953 __u8 rssi; 954 __u8 rx_status; 955 __u8 channel; 956 __u8 rx_ctrl; 957} __packed; 958 959#define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80 960#define MWL8K_AP_RATE_INFO_40MHZ 0x40 961#define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f) 962 963#define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80 964 965/* 8366/8764 AP rx_status bits */ 966#define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80 967#define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF 968#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02 969#define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04 970#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08 971 972static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr) 973{ 974 struct mwl8k_rxd_ap *rxd = _rxd; 975 976 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 977 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST; 978} 979 980static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len) 981{ 982 struct mwl8k_rxd_ap *rxd = _rxd; 983 984 rxd->pkt_len = cpu_to_le16(len); 985 rxd->pkt_phys_addr = cpu_to_le32(addr); 986 wmb(); 987 rxd->rx_ctrl = 0; 988} 989 990static int 991mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status, 992 __le16 *qos, s8 *noise) 993{ 994 struct mwl8k_rxd_ap *rxd = _rxd; 995 996 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST)) 997 return -1; 998 rmb(); 999 1000 memset(status, 0, sizeof(*status)); 1001 1002 status->signal = -rxd->rssi; 1003 *noise = -rxd->noise_floor; 1004 1005 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) { 1006 status->encoding = RX_ENC_HT; 1007 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ) 1008 status->bw = RATE_INFO_BW_40; 1009 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate); 1010 } else { 1011 int i; 1012 1013 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) { 1014 if (mwl8k_rates_24[i].hw_value == rxd->rate) { 1015 status->rate_idx = i; 1016 break; 1017 } 1018 } 1019 } 1020 1021 if (rxd->channel > 14) { 1022 status->band = NL80211_BAND_5GHZ; 1023 if (!(status->encoding == RX_ENC_HT) && 1024 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) 1025 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; 1026 } else { 1027 status->band = NL80211_BAND_2GHZ; 1028 } 1029 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1030 status->band); 1031 1032 *qos = rxd->qos_control; 1033 1034 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) && 1035 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) && 1036 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR)) 1037 status->flag |= RX_FLAG_MMIC_ERROR; 1038 1039 return le16_to_cpu(rxd->pkt_len); 1040} 1041 1042static struct rxd_ops rxd_ap_ops = { 1043 .rxd_size = sizeof(struct mwl8k_rxd_ap), 1044 .rxd_init = mwl8k_rxd_ap_init, 1045 .rxd_refill = mwl8k_rxd_ap_refill, 1046 .rxd_process = mwl8k_rxd_ap_process, 1047}; 1048 1049/* 1050 * Packet reception for STA firmware. 1051 */ 1052struct mwl8k_rxd_sta { 1053 __le16 pkt_len; 1054 __u8 link_quality; 1055 __u8 noise_level; 1056 __le32 pkt_phys_addr; 1057 __le32 next_rxd_phys_addr; 1058 __le16 qos_control; 1059 __le16 rate_info; 1060 __le32 pad0[4]; 1061 __u8 rssi; 1062 __u8 channel; 1063 __le16 pad1; 1064 __u8 rx_ctrl; 1065 __u8 rx_status; 1066 __u8 pad2[2]; 1067} __packed; 1068 1069#define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000 1070#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3) 1071#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f) 1072#define MWL8K_STA_RATE_INFO_40MHZ 0x0004 1073#define MWL8K_STA_RATE_INFO_SHORTGI 0x0002 1074#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001 1075 1076#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02 1077#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04 1078/* ICV=0 or MIC=1 */ 1079#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08 1080/* Key is uploaded only in failure case */ 1081#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30 1082 1083static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr) 1084{ 1085 struct mwl8k_rxd_sta *rxd = _rxd; 1086 1087 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 1088 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST; 1089} 1090 1091static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len) 1092{ 1093 struct mwl8k_rxd_sta *rxd = _rxd; 1094 1095 rxd->pkt_len = cpu_to_le16(len); 1096 rxd->pkt_phys_addr = cpu_to_le32(addr); 1097 wmb(); 1098 rxd->rx_ctrl = 0; 1099} 1100 1101static int 1102mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status, 1103 __le16 *qos, s8 *noise) 1104{ 1105 struct mwl8k_rxd_sta *rxd = _rxd; 1106 u16 rate_info; 1107 1108 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST)) 1109 return -1; 1110 rmb(); 1111 1112 rate_info = le16_to_cpu(rxd->rate_info); 1113 1114 memset(status, 0, sizeof(*status)); 1115 1116 status->signal = -rxd->rssi; 1117 *noise = -rxd->noise_level; 1118 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info); 1119 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info); 1120 1121 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE) 1122 status->enc_flags |= RX_ENC_FLAG_SHORTPRE; 1123 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ) 1124 status->bw = RATE_INFO_BW_40; 1125 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI) 1126 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 1127 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT) 1128 status->encoding = RX_ENC_HT; 1129 1130 if (rxd->channel > 14) { 1131 status->band = NL80211_BAND_5GHZ; 1132 if (!(status->encoding == RX_ENC_HT) && 1133 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) 1134 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; 1135 } else { 1136 status->band = NL80211_BAND_2GHZ; 1137 } 1138 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1139 status->band); 1140 1141 *qos = rxd->qos_control; 1142 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) && 1143 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE)) 1144 status->flag |= RX_FLAG_MMIC_ERROR; 1145 1146 return le16_to_cpu(rxd->pkt_len); 1147} 1148 1149static struct rxd_ops rxd_sta_ops = { 1150 .rxd_size = sizeof(struct mwl8k_rxd_sta), 1151 .rxd_init = mwl8k_rxd_sta_init, 1152 .rxd_refill = mwl8k_rxd_sta_refill, 1153 .rxd_process = mwl8k_rxd_sta_process, 1154}; 1155 1156 1157#define MWL8K_RX_DESCS 256 1158#define MWL8K_RX_MAXSZ 3800 1159 1160static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) 1161{ 1162 struct mwl8k_priv *priv = hw->priv; 1163 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1164 int size; 1165 int i; 1166 1167 rxq->rxd_count = 0; 1168 rxq->head = 0; 1169 rxq->tail = 0; 1170 1171 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size; 1172 1173 rxq->rxd = dma_alloc_coherent(&priv->pdev->dev, size, &rxq->rxd_dma, 1174 GFP_KERNEL); 1175 if (rxq->rxd == NULL) { 1176 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n"); 1177 return -ENOMEM; 1178 } 1179 1180 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL); 1181 if (rxq->buf == NULL) { 1182 dma_free_coherent(&priv->pdev->dev, size, rxq->rxd, 1183 rxq->rxd_dma); 1184 return -ENOMEM; 1185 } 1186 1187 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1188 int desc_size; 1189 void *rxd; 1190 int nexti; 1191 dma_addr_t next_dma_addr; 1192 1193 desc_size = priv->rxd_ops->rxd_size; 1194 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size); 1195 1196 nexti = i + 1; 1197 if (nexti == MWL8K_RX_DESCS) 1198 nexti = 0; 1199 next_dma_addr = rxq->rxd_dma + (nexti * desc_size); 1200 1201 priv->rxd_ops->rxd_init(rxd, next_dma_addr); 1202 } 1203 1204 return 0; 1205} 1206 1207static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) 1208{ 1209 struct mwl8k_priv *priv = hw->priv; 1210 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1211 int refilled = 0; 1212 1213 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) { 1214 struct sk_buff *skb; 1215 dma_addr_t addr; 1216 int rx; 1217 void *rxd; 1218 1219 skb = dev_alloc_skb(MWL8K_RX_MAXSZ); 1220 if (skb == NULL) 1221 break; 1222 1223 addr = dma_map_single(&priv->pdev->dev, skb->data, 1224 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1225 1226 rxq->rxd_count++; 1227 rx = rxq->tail++; 1228 if (rxq->tail == MWL8K_RX_DESCS) 1229 rxq->tail = 0; 1230 rxq->buf[rx].skb = skb; 1231 dma_unmap_addr_set(&rxq->buf[rx], dma, addr); 1232 1233 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size); 1234 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ); 1235 1236 refilled++; 1237 } 1238 1239 return refilled; 1240} 1241 1242/* Must be called only when the card's reception is completely halted */ 1243static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) 1244{ 1245 struct mwl8k_priv *priv = hw->priv; 1246 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1247 int i; 1248 1249 if (rxq->rxd == NULL) 1250 return; 1251 1252 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1253 if (rxq->buf[i].skb != NULL) { 1254 dma_unmap_single(&priv->pdev->dev, 1255 dma_unmap_addr(&rxq->buf[i], dma), 1256 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1257 dma_unmap_addr_set(&rxq->buf[i], dma, 0); 1258 1259 kfree_skb(rxq->buf[i].skb); 1260 rxq->buf[i].skb = NULL; 1261 } 1262 } 1263 1264 kfree(rxq->buf); 1265 rxq->buf = NULL; 1266 1267 dma_free_coherent(&priv->pdev->dev, 1268 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, rxq->rxd, 1269 rxq->rxd_dma); 1270 rxq->rxd = NULL; 1271} 1272 1273 1274/* 1275 * Scan a list of BSSIDs to process for finalize join. 1276 * Allows for extension to process multiple BSSIDs. 1277 */ 1278static inline int 1279mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) 1280{ 1281 return priv->capture_beacon && 1282 ieee80211_is_beacon(wh->frame_control) && 1283 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid); 1284} 1285 1286static inline void mwl8k_save_beacon(struct ieee80211_hw *hw, 1287 struct sk_buff *skb) 1288{ 1289 struct mwl8k_priv *priv = hw->priv; 1290 1291 priv->capture_beacon = false; 1292 eth_zero_addr(priv->capture_bssid); 1293 1294 /* 1295 * Use GFP_ATOMIC as rxq_process is called from 1296 * the primary interrupt handler, memory allocation call 1297 * must not sleep. 1298 */ 1299 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); 1300 if (priv->beacon_skb != NULL) 1301 ieee80211_queue_work(hw, &priv->finalize_join_worker); 1302} 1303 1304static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list, 1305 u8 *bssid) 1306{ 1307 struct mwl8k_vif *mwl8k_vif; 1308 1309 list_for_each_entry(mwl8k_vif, 1310 vif_list, list) { 1311 if (memcmp(bssid, mwl8k_vif->bssid, 1312 ETH_ALEN) == 0) 1313 return mwl8k_vif; 1314 } 1315 1316 return NULL; 1317} 1318 1319static int rxq_process(struct ieee80211_hw *hw, int index, int limit) 1320{ 1321 struct mwl8k_priv *priv = hw->priv; 1322 struct mwl8k_vif *mwl8k_vif = NULL; 1323 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1324 int processed; 1325 1326 processed = 0; 1327 while (rxq->rxd_count && limit--) { 1328 struct sk_buff *skb; 1329 void *rxd; 1330 int pkt_len; 1331 struct ieee80211_rx_status status; 1332 struct ieee80211_hdr *wh; 1333 __le16 qos; 1334 1335 skb = rxq->buf[rxq->head].skb; 1336 if (skb == NULL) 1337 break; 1338 1339 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size); 1340 1341 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos, 1342 &priv->noise); 1343 if (pkt_len < 0) 1344 break; 1345 1346 rxq->buf[rxq->head].skb = NULL; 1347 1348 dma_unmap_single(&priv->pdev->dev, 1349 dma_unmap_addr(&rxq->buf[rxq->head], dma), 1350 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1351 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0); 1352 1353 rxq->head++; 1354 if (rxq->head == MWL8K_RX_DESCS) 1355 rxq->head = 0; 1356 1357 rxq->rxd_count--; 1358 1359 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1360 1361 /* 1362 * Check for a pending join operation. Save a 1363 * copy of the beacon and schedule a tasklet to 1364 * send a FINALIZE_JOIN command to the firmware. 1365 */ 1366 if (mwl8k_capture_bssid(priv, (void *)skb->data)) 1367 mwl8k_save_beacon(hw, skb); 1368 1369 if (ieee80211_has_protected(wh->frame_control)) { 1370 1371 /* Check if hw crypto has been enabled for 1372 * this bss. If yes, set the status flags 1373 * accordingly 1374 */ 1375 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list, 1376 wh->addr1); 1377 1378 if (mwl8k_vif != NULL && 1379 mwl8k_vif->is_hw_crypto_enabled) { 1380 /* 1381 * When MMIC ERROR is encountered 1382 * by the firmware, payload is 1383 * dropped and only 32 bytes of 1384 * mwl8k Firmware header is sent 1385 * to the host. 1386 * 1387 * We need to add four bytes of 1388 * key information. In it 1389 * MAC80211 expects keyidx set to 1390 * 0 for triggering Counter 1391 * Measure of MMIC failure. 1392 */ 1393 if (status.flag & RX_FLAG_MMIC_ERROR) { 1394 struct mwl8k_dma_data *tr; 1395 tr = (struct mwl8k_dma_data *)skb->data; 1396 memset((void *)&(tr->data), 0, 4); 1397 pkt_len += 4; 1398 } 1399 1400 if (!ieee80211_is_auth(wh->frame_control)) 1401 status.flag |= RX_FLAG_IV_STRIPPED | 1402 RX_FLAG_DECRYPTED | 1403 RX_FLAG_MMIC_STRIPPED; 1404 } 1405 } 1406 1407 skb_put(skb, pkt_len); 1408 mwl8k_remove_dma_header(skb, qos); 1409 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); 1410 ieee80211_rx_irqsafe(hw, skb); 1411 1412 processed++; 1413 } 1414 1415 return processed; 1416} 1417 1418 1419/* 1420 * Packet transmission. 1421 */ 1422 1423#define MWL8K_TXD_STATUS_OK 0x00000001 1424#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 1425#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 1426#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 1427#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 1428 1429#define MWL8K_QOS_QLEN_UNSPEC 0xff00 1430#define MWL8K_QOS_ACK_POLICY_MASK 0x0060 1431#define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000 1432#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060 1433#define MWL8K_QOS_EOSP 0x0010 1434 1435struct mwl8k_tx_desc { 1436 __le32 status; 1437 __u8 data_rate; 1438 __u8 tx_priority; 1439 __le16 qos_control; 1440 __le32 pkt_phys_addr; 1441 __le16 pkt_len; 1442 __u8 dest_MAC_addr[ETH_ALEN]; 1443 __le32 next_txd_phys_addr; 1444 __le32 timestamp; 1445 __le16 rate_info; 1446 __u8 peer_id; 1447 __u8 tx_frag_cnt; 1448} __packed; 1449 1450#define MWL8K_TX_DESCS 128 1451 1452static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) 1453{ 1454 struct mwl8k_priv *priv = hw->priv; 1455 struct mwl8k_tx_queue *txq = priv->txq + index; 1456 int size; 1457 int i; 1458 1459 txq->len = 0; 1460 txq->head = 0; 1461 txq->tail = 0; 1462 1463 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); 1464 1465 txq->txd = dma_alloc_coherent(&priv->pdev->dev, size, &txq->txd_dma, 1466 GFP_KERNEL); 1467 if (txq->txd == NULL) { 1468 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n"); 1469 return -ENOMEM; 1470 } 1471 1472 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL); 1473 if (txq->skb == NULL) { 1474 dma_free_coherent(&priv->pdev->dev, size, txq->txd, 1475 txq->txd_dma); 1476 txq->txd = NULL; 1477 return -ENOMEM; 1478 } 1479 1480 for (i = 0; i < MWL8K_TX_DESCS; i++) { 1481 struct mwl8k_tx_desc *tx_desc; 1482 int nexti; 1483 1484 tx_desc = txq->txd + i; 1485 nexti = (i + 1) % MWL8K_TX_DESCS; 1486 1487 tx_desc->status = 0; 1488 tx_desc->next_txd_phys_addr = 1489 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc)); 1490 } 1491 1492 return 0; 1493} 1494 1495static inline void mwl8k_tx_start(struct mwl8k_priv *priv) 1496{ 1497 iowrite32(MWL8K_H2A_INT_PPA_READY, 1498 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1499 iowrite32(MWL8K_H2A_INT_DUMMY, 1500 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1501 ioread32(priv->regs + MWL8K_HIU_INT_CODE); 1502} 1503 1504static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw) 1505{ 1506 struct mwl8k_priv *priv = hw->priv; 1507 int i; 1508 1509 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 1510 struct mwl8k_tx_queue *txq = priv->txq + i; 1511 int fw_owned = 0; 1512 int drv_owned = 0; 1513 int unused = 0; 1514 int desc; 1515 1516 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { 1517 struct mwl8k_tx_desc *tx_desc = txq->txd + desc; 1518 u32 status; 1519 1520 status = le32_to_cpu(tx_desc->status); 1521 if (status & MWL8K_TXD_STATUS_FW_OWNED) 1522 fw_owned++; 1523 else 1524 drv_owned++; 1525 1526 if (tx_desc->pkt_len == 0) 1527 unused++; 1528 } 1529 1530 wiphy_err(hw->wiphy, 1531 "txq[%d] len=%d head=%d tail=%d " 1532 "fw_owned=%d drv_owned=%d unused=%d\n", 1533 i, 1534 txq->len, txq->head, txq->tail, 1535 fw_owned, drv_owned, unused); 1536 } 1537} 1538 1539/* 1540 * Must be called with priv->fw_mutex held and tx queues stopped. 1541 */ 1542#define MWL8K_TX_WAIT_TIMEOUT_MS 5000 1543 1544static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw) 1545{ 1546 struct mwl8k_priv *priv = hw->priv; 1547 DECLARE_COMPLETION_ONSTACK(tx_wait); 1548 int retry; 1549 int rc; 1550 1551 might_sleep(); 1552 1553 /* Since fw restart is in progress, allow only the firmware 1554 * commands from the restart code and block the other 1555 * commands since they are going to fail in any case since 1556 * the firmware has crashed 1557 */ 1558 if (priv->hw_restart_in_progress) { 1559 if (priv->hw_restart_owner == current) 1560 return 0; 1561 else 1562 return -EBUSY; 1563 } 1564 1565 if (atomic_read(&priv->watchdog_event_pending)) 1566 return 0; 1567 1568 /* 1569 * The TX queues are stopped at this point, so this test 1570 * doesn't need to take ->tx_lock. 1571 */ 1572 if (!priv->pending_tx_pkts) 1573 return 0; 1574 1575 retry = 1; 1576 rc = 0; 1577 1578 spin_lock_bh(&priv->tx_lock); 1579 priv->tx_wait = &tx_wait; 1580 while (!rc) { 1581 int oldcount; 1582 unsigned long timeout; 1583 1584 oldcount = priv->pending_tx_pkts; 1585 1586 spin_unlock_bh(&priv->tx_lock); 1587 timeout = wait_for_completion_timeout(&tx_wait, 1588 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS)); 1589 1590 if (atomic_read(&priv->watchdog_event_pending)) { 1591 spin_lock_bh(&priv->tx_lock); 1592 priv->tx_wait = NULL; 1593 spin_unlock_bh(&priv->tx_lock); 1594 return 0; 1595 } 1596 1597 spin_lock_bh(&priv->tx_lock); 1598 1599 if (timeout || !priv->pending_tx_pkts) { 1600 WARN_ON(priv->pending_tx_pkts); 1601 if (retry) 1602 wiphy_notice(hw->wiphy, "tx rings drained\n"); 1603 break; 1604 } 1605 1606 if (retry) { 1607 mwl8k_tx_start(priv); 1608 retry = 0; 1609 continue; 1610 } 1611 1612 if (priv->pending_tx_pkts < oldcount) { 1613 wiphy_notice(hw->wiphy, 1614 "waiting for tx rings to drain (%d -> %d pkts)\n", 1615 oldcount, priv->pending_tx_pkts); 1616 retry = 1; 1617 continue; 1618 } 1619 1620 priv->tx_wait = NULL; 1621 1622 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n", 1623 MWL8K_TX_WAIT_TIMEOUT_MS); 1624 mwl8k_dump_tx_rings(hw); 1625 priv->hw_restart_in_progress = true; 1626 ieee80211_queue_work(hw, &priv->fw_reload); 1627 1628 rc = -ETIMEDOUT; 1629 } 1630 priv->tx_wait = NULL; 1631 spin_unlock_bh(&priv->tx_lock); 1632 1633 return rc; 1634} 1635 1636#define MWL8K_TXD_SUCCESS(status) \ 1637 ((status) & (MWL8K_TXD_STATUS_OK | \ 1638 MWL8K_TXD_STATUS_OK_RETRY | \ 1639 MWL8K_TXD_STATUS_OK_MORE_RETRY)) 1640 1641static int mwl8k_tid_queue_mapping(u8 tid) 1642{ 1643 BUG_ON(tid > 7); 1644 1645 switch (tid) { 1646 case 0: 1647 case 3: 1648 return IEEE80211_AC_BE; 1649 case 1: 1650 case 2: 1651 return IEEE80211_AC_BK; 1652 case 4: 1653 case 5: 1654 return IEEE80211_AC_VI; 1655 case 6: 1656 case 7: 1657 return IEEE80211_AC_VO; 1658 default: 1659 return -1; 1660 } 1661} 1662 1663/* The firmware will fill in the rate information 1664 * for each packet that gets queued in the hardware 1665 * and these macros will interpret that info. 1666 */ 1667 1668#define RI_FORMAT(a) (a & 0x0001) 1669#define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3) 1670 1671static int 1672mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force) 1673{ 1674 struct mwl8k_priv *priv = hw->priv; 1675 struct mwl8k_tx_queue *txq = priv->txq + index; 1676 int processed; 1677 1678 processed = 0; 1679 while (txq->len > 0 && limit--) { 1680 int tx; 1681 struct mwl8k_tx_desc *tx_desc; 1682 unsigned long addr; 1683 int size; 1684 struct sk_buff *skb; 1685 struct ieee80211_tx_info *info; 1686 u32 status; 1687 struct ieee80211_sta *sta; 1688 struct mwl8k_sta *sta_info = NULL; 1689 u16 rate_info; 1690 struct ieee80211_hdr *wh; 1691 1692 tx = txq->head; 1693 tx_desc = txq->txd + tx; 1694 1695 status = le32_to_cpu(tx_desc->status); 1696 1697 if (status & MWL8K_TXD_STATUS_FW_OWNED) { 1698 if (!force) 1699 break; 1700 tx_desc->status &= 1701 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); 1702 } 1703 1704 txq->head = (tx + 1) % MWL8K_TX_DESCS; 1705 BUG_ON(txq->len == 0); 1706 txq->len--; 1707 priv->pending_tx_pkts--; 1708 1709 addr = le32_to_cpu(tx_desc->pkt_phys_addr); 1710 size = le16_to_cpu(tx_desc->pkt_len); 1711 skb = txq->skb[tx]; 1712 txq->skb[tx] = NULL; 1713 1714 BUG_ON(skb == NULL); 1715 dma_unmap_single(&priv->pdev->dev, addr, size, DMA_TO_DEVICE); 1716 1717 mwl8k_remove_dma_header(skb, tx_desc->qos_control); 1718 1719 wh = (struct ieee80211_hdr *) skb->data; 1720 1721 /* Mark descriptor as unused */ 1722 tx_desc->pkt_phys_addr = 0; 1723 tx_desc->pkt_len = 0; 1724 1725 info = IEEE80211_SKB_CB(skb); 1726 if (ieee80211_is_data(wh->frame_control)) { 1727 rcu_read_lock(); 1728 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1, 1729 wh->addr2); 1730 if (sta) { 1731 sta_info = MWL8K_STA(sta); 1732 BUG_ON(sta_info == NULL); 1733 rate_info = le16_to_cpu(tx_desc->rate_info); 1734 /* If rate is < 6.5 Mpbs for an ht station 1735 * do not form an ampdu. If the station is a 1736 * legacy station (format = 0), do not form an 1737 * ampdu 1738 */ 1739 if (RI_RATE_ID_MCS(rate_info) < 1 || 1740 RI_FORMAT(rate_info) == 0) { 1741 sta_info->is_ampdu_allowed = false; 1742 } else { 1743 sta_info->is_ampdu_allowed = true; 1744 } 1745 } 1746 rcu_read_unlock(); 1747 } 1748 1749 ieee80211_tx_info_clear_status(info); 1750 1751 /* Rate control is happening in the firmware. 1752 * Ensure no tx rate is being reported. 1753 */ 1754 info->status.rates[0].idx = -1; 1755 info->status.rates[0].count = 1; 1756 1757 if (MWL8K_TXD_SUCCESS(status)) 1758 info->flags |= IEEE80211_TX_STAT_ACK; 1759 1760 ieee80211_tx_status_irqsafe(hw, skb); 1761 1762 processed++; 1763 } 1764 1765 return processed; 1766} 1767 1768/* must be called only when the card's transmit is completely halted */ 1769static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) 1770{ 1771 struct mwl8k_priv *priv = hw->priv; 1772 struct mwl8k_tx_queue *txq = priv->txq + index; 1773 1774 if (txq->txd == NULL) 1775 return; 1776 1777 mwl8k_txq_reclaim(hw, index, INT_MAX, 1); 1778 1779 kfree(txq->skb); 1780 txq->skb = NULL; 1781 1782 dma_free_coherent(&priv->pdev->dev, 1783 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), 1784 txq->txd, txq->txd_dma); 1785 txq->txd = NULL; 1786} 1787 1788/* caller must hold priv->stream_lock when calling the stream functions */ 1789static struct mwl8k_ampdu_stream * 1790mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid) 1791{ 1792 struct mwl8k_ampdu_stream *stream; 1793 struct mwl8k_priv *priv = hw->priv; 1794 int i; 1795 1796 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1797 stream = &priv->ampdu[i]; 1798 if (stream->state == AMPDU_NO_STREAM) { 1799 stream->sta = sta; 1800 stream->state = AMPDU_STREAM_NEW; 1801 stream->tid = tid; 1802 stream->idx = i; 1803 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d", 1804 sta->addr, tid); 1805 return stream; 1806 } 1807 } 1808 return NULL; 1809} 1810 1811static int 1812mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1813{ 1814 int ret; 1815 1816 /* if the stream has already been started, don't start it again */ 1817 if (stream->state != AMPDU_STREAM_NEW) 1818 return 0; 1819 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0); 1820 if (ret) 1821 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: " 1822 "%d\n", stream->sta->addr, stream->tid, ret); 1823 else 1824 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n", 1825 stream->sta->addr, stream->tid); 1826 return ret; 1827} 1828 1829static void 1830mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1831{ 1832 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr, 1833 stream->tid); 1834 memset(stream, 0, sizeof(*stream)); 1835} 1836 1837static struct mwl8k_ampdu_stream * 1838mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid) 1839{ 1840 struct mwl8k_priv *priv = hw->priv; 1841 int i; 1842 1843 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1844 struct mwl8k_ampdu_stream *stream; 1845 stream = &priv->ampdu[i]; 1846 if (stream->state == AMPDU_NO_STREAM) 1847 continue; 1848 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) && 1849 stream->tid == tid) 1850 return stream; 1851 } 1852 return NULL; 1853} 1854 1855#define MWL8K_AMPDU_PACKET_THRESHOLD 64 1856static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid) 1857{ 1858 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1859 struct tx_traffic_info *tx_stats; 1860 1861 BUG_ON(tid >= MWL8K_MAX_TID); 1862 tx_stats = &sta_info->tx_stats[tid]; 1863 1864 return sta_info->is_ampdu_allowed && 1865 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD; 1866} 1867 1868static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid) 1869{ 1870 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1871 struct tx_traffic_info *tx_stats; 1872 1873 BUG_ON(tid >= MWL8K_MAX_TID); 1874 tx_stats = &sta_info->tx_stats[tid]; 1875 1876 if (tx_stats->start_time == 0) 1877 tx_stats->start_time = jiffies; 1878 1879 /* reset the packet count after each second elapses. If the number of 1880 * packets ever exceeds the ampdu_min_traffic threshold, we will allow 1881 * an ampdu stream to be started. 1882 */ 1883 if (time_after(jiffies, (unsigned long)tx_stats->start_time + HZ)) { 1884 tx_stats->pkts = 0; 1885 tx_stats->start_time = 0; 1886 } else 1887 tx_stats->pkts++; 1888} 1889 1890/* The hardware ampdu queues start from 5. 1891 * txpriorities for ampdu queues are 1892 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest 1893 * and queue 3 is lowest (queue 4 is reserved) 1894 */ 1895#define BA_QUEUE 5 1896 1897static void 1898mwl8k_txq_xmit(struct ieee80211_hw *hw, 1899 int index, 1900 struct ieee80211_sta *sta, 1901 struct sk_buff *skb) 1902{ 1903 struct mwl8k_priv *priv = hw->priv; 1904 struct ieee80211_tx_info *tx_info; 1905 struct mwl8k_vif *mwl8k_vif; 1906 struct ieee80211_hdr *wh; 1907 struct mwl8k_tx_queue *txq; 1908 struct mwl8k_tx_desc *tx; 1909 dma_addr_t dma; 1910 u32 txstatus; 1911 u8 txdatarate; 1912 u16 qos; 1913 int txpriority; 1914 u8 tid = 0; 1915 struct mwl8k_ampdu_stream *stream = NULL; 1916 bool start_ba_session = false; 1917 bool mgmtframe = false; 1918 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; 1919 bool eapol_frame = false; 1920 1921 wh = (struct ieee80211_hdr *)skb->data; 1922 if (ieee80211_is_data_qos(wh->frame_control)) 1923 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); 1924 else 1925 qos = 0; 1926 1927 if (skb->protocol == cpu_to_be16(ETH_P_PAE)) 1928 eapol_frame = true; 1929 1930 if (ieee80211_is_mgmt(wh->frame_control)) 1931 mgmtframe = true; 1932 1933 if (priv->ap_fw) 1934 mwl8k_encapsulate_tx_frame(priv, skb); 1935 else 1936 mwl8k_add_dma_header(priv, skb, 0, 0); 1937 1938 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1939 1940 tx_info = IEEE80211_SKB_CB(skb); 1941 mwl8k_vif = MWL8K_VIF(tx_info->control.vif); 1942 1943 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { 1944 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); 1945 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno); 1946 mwl8k_vif->seqno += 0x10; 1947 } 1948 1949 /* Setup firmware control bit fields for each frame type. */ 1950 txstatus = 0; 1951 txdatarate = 0; 1952 if (ieee80211_is_mgmt(wh->frame_control) || 1953 ieee80211_is_ctl(wh->frame_control)) { 1954 txdatarate = 0; 1955 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP; 1956 } else if (ieee80211_is_data(wh->frame_control)) { 1957 txdatarate = 1; 1958 if (is_multicast_ether_addr(wh->addr1)) 1959 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX; 1960 1961 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 1962 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) 1963 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK; 1964 else 1965 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 1966 } 1967 1968 /* Queue ADDBA request in the respective data queue. While setting up 1969 * the ampdu stream, mac80211 queues further packets for that 1970 * particular ra/tid pair. However, packets piled up in the hardware 1971 * for that ra/tid pair will still go out. ADDBA request and the 1972 * related data packets going out from different queues asynchronously 1973 * will cause a shift in the receiver window which might result in 1974 * ampdu packets getting dropped at the receiver after the stream has 1975 * been setup. 1976 */ 1977 if (unlikely(ieee80211_is_action(wh->frame_control) && 1978 mgmt->u.action.category == WLAN_CATEGORY_BACK && 1979 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ && 1980 priv->ap_fw)) { 1981 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); 1982 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; 1983 index = mwl8k_tid_queue_mapping(tid); 1984 } 1985 1986 txpriority = index; 1987 1988 if (priv->ap_fw && sta && sta->deflink.ht_cap.ht_supported && !eapol_frame && 1989 ieee80211_is_data_qos(wh->frame_control)) { 1990 tid = qos & 0xf; 1991 mwl8k_tx_count_packet(sta, tid); 1992 spin_lock(&priv->stream_lock); 1993 stream = mwl8k_lookup_stream(hw, sta->addr, tid); 1994 if (stream != NULL) { 1995 if (stream->state == AMPDU_STREAM_ACTIVE) { 1996 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK)); 1997 txpriority = (BA_QUEUE + stream->idx) % 1998 TOTAL_HW_TX_QUEUES; 1999 if (stream->idx <= 1) 2000 index = stream->idx + 2001 MWL8K_TX_WMM_QUEUES; 2002 2003 } else if (stream->state == AMPDU_STREAM_NEW) { 2004 /* We get here if the driver sends us packets 2005 * after we've initiated a stream, but before 2006 * our ampdu_action routine has been called 2007 * with IEEE80211_AMPDU_TX_START to get the SSN 2008 * for the ADDBA request. So this packet can 2009 * go out with no risk of sequence number 2010 * mismatch. No special handling is required. 2011 */ 2012 } else { 2013 /* Drop packets that would go out after the 2014 * ADDBA request was sent but before the ADDBA 2015 * response is received. If we don't do this, 2016 * the recipient would probably receive it 2017 * after the ADDBA request with SSN 0. This 2018 * will cause the recipient's BA receive window 2019 * to shift, which would cause the subsequent 2020 * packets in the BA stream to be discarded. 2021 * mac80211 queues our packets for us in this 2022 * case, so this is really just a safety check. 2023 */ 2024 wiphy_warn(hw->wiphy, 2025 "Cannot send packet while ADDBA " 2026 "dialog is underway.\n"); 2027 spin_unlock(&priv->stream_lock); 2028 dev_kfree_skb(skb); 2029 return; 2030 } 2031 } else { 2032 /* Defer calling mwl8k_start_stream so that the current 2033 * skb can go out before the ADDBA request. This 2034 * prevents sequence number mismatch at the recepient 2035 * as described above. 2036 */ 2037 if (mwl8k_ampdu_allowed(sta, tid)) { 2038 stream = mwl8k_add_stream(hw, sta, tid); 2039 if (stream != NULL) 2040 start_ba_session = true; 2041 } 2042 } 2043 spin_unlock(&priv->stream_lock); 2044 } else { 2045 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 2046 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 2047 } 2048 2049 dma = dma_map_single(&priv->pdev->dev, skb->data, skb->len, 2050 DMA_TO_DEVICE); 2051 2052 if (dma_mapping_error(&priv->pdev->dev, dma)) { 2053 wiphy_debug(hw->wiphy, 2054 "failed to dma map skb, dropping TX frame.\n"); 2055 if (start_ba_session) { 2056 spin_lock(&priv->stream_lock); 2057 mwl8k_remove_stream(hw, stream); 2058 spin_unlock(&priv->stream_lock); 2059 } 2060 dev_kfree_skb(skb); 2061 return; 2062 } 2063 2064 spin_lock_bh(&priv->tx_lock); 2065 2066 txq = priv->txq + index; 2067 2068 /* Mgmt frames that go out frequently are probe 2069 * responses. Other mgmt frames got out relatively 2070 * infrequently. Hence reserve 2 buffers so that 2071 * other mgmt frames do not get dropped due to an 2072 * already queued probe response in one of the 2073 * reserved buffers. 2074 */ 2075 2076 if (txq->len >= MWL8K_TX_DESCS - 2) { 2077 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) { 2078 if (start_ba_session) { 2079 spin_lock(&priv->stream_lock); 2080 mwl8k_remove_stream(hw, stream); 2081 spin_unlock(&priv->stream_lock); 2082 } 2083 mwl8k_tx_start(priv); 2084 spin_unlock_bh(&priv->tx_lock); 2085 dma_unmap_single(&priv->pdev->dev, dma, skb->len, 2086 DMA_TO_DEVICE); 2087 dev_kfree_skb(skb); 2088 return; 2089 } 2090 } 2091 2092 BUG_ON(txq->skb[txq->tail] != NULL); 2093 txq->skb[txq->tail] = skb; 2094 2095 tx = txq->txd + txq->tail; 2096 tx->data_rate = txdatarate; 2097 tx->tx_priority = txpriority; 2098 tx->qos_control = cpu_to_le16(qos); 2099 tx->pkt_phys_addr = cpu_to_le32(dma); 2100 tx->pkt_len = cpu_to_le16(skb->len); 2101 tx->rate_info = 0; 2102 if (!priv->ap_fw && sta != NULL) 2103 tx->peer_id = MWL8K_STA(sta)->peer_id; 2104 else 2105 tx->peer_id = 0; 2106 2107 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame) 2108 tx->timestamp = cpu_to_le32(ioread32(priv->regs + 2109 MWL8K_HW_TIMER_REGISTER)); 2110 else 2111 tx->timestamp = 0; 2112 2113 wmb(); 2114 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus); 2115 2116 txq->len++; 2117 priv->pending_tx_pkts++; 2118 2119 txq->tail++; 2120 if (txq->tail == MWL8K_TX_DESCS) 2121 txq->tail = 0; 2122 2123 mwl8k_tx_start(priv); 2124 2125 spin_unlock_bh(&priv->tx_lock); 2126 2127 /* Initiate the ampdu session here */ 2128 if (start_ba_session) { 2129 spin_lock(&priv->stream_lock); 2130 if (mwl8k_start_stream(hw, stream)) 2131 mwl8k_remove_stream(hw, stream); 2132 spin_unlock(&priv->stream_lock); 2133 } 2134} 2135 2136 2137/* 2138 * Firmware access. 2139 * 2140 * We have the following requirements for issuing firmware commands: 2141 * - Some commands require that the packet transmit path is idle when 2142 * the command is issued. (For simplicity, we'll just quiesce the 2143 * transmit path for every command.) 2144 * - There are certain sequences of commands that need to be issued to 2145 * the hardware sequentially, with no other intervening commands. 2146 * 2147 * This leads to an implementation of a "firmware lock" as a mutex that 2148 * can be taken recursively, and which is taken by both the low-level 2149 * command submission function (mwl8k_post_cmd) as well as any users of 2150 * that function that require issuing of an atomic sequence of commands, 2151 * and quiesces the transmit path whenever it's taken. 2152 */ 2153static int mwl8k_fw_lock(struct ieee80211_hw *hw) 2154{ 2155 struct mwl8k_priv *priv = hw->priv; 2156 2157 if (priv->fw_mutex_owner != current) { 2158 int rc; 2159 2160 mutex_lock(&priv->fw_mutex); 2161 ieee80211_stop_queues(hw); 2162 2163 rc = mwl8k_tx_wait_empty(hw); 2164 if (rc) { 2165 if (!priv->hw_restart_in_progress) 2166 ieee80211_wake_queues(hw); 2167 2168 mutex_unlock(&priv->fw_mutex); 2169 2170 return rc; 2171 } 2172 2173 priv->fw_mutex_owner = current; 2174 } 2175 2176 priv->fw_mutex_depth++; 2177 2178 return 0; 2179} 2180 2181static void mwl8k_fw_unlock(struct ieee80211_hw *hw) 2182{ 2183 struct mwl8k_priv *priv = hw->priv; 2184 2185 if (!--priv->fw_mutex_depth) { 2186 if (!priv->hw_restart_in_progress) 2187 ieee80211_wake_queues(hw); 2188 2189 priv->fw_mutex_owner = NULL; 2190 mutex_unlock(&priv->fw_mutex); 2191 } 2192} 2193 2194static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, 2195 u32 bitmap); 2196 2197/* 2198 * Command processing. 2199 */ 2200 2201/* Timeout firmware commands after 10s */ 2202#define MWL8K_CMD_TIMEOUT_MS 10000 2203 2204static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd) 2205{ 2206 DECLARE_COMPLETION_ONSTACK(cmd_wait); 2207 struct mwl8k_priv *priv = hw->priv; 2208 void __iomem *regs = priv->regs; 2209 dma_addr_t dma_addr; 2210 unsigned int dma_size; 2211 int rc; 2212 unsigned long timeout = 0; 2213 u8 buf[32]; 2214 u32 bitmap = 0; 2215 2216 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n", 2217 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid); 2218 2219 /* Before posting firmware commands that could change the hardware 2220 * characteristics, make sure that all BSSes are stopped temporary. 2221 * Enable these stopped BSSes after completion of the commands 2222 */ 2223 2224 rc = mwl8k_fw_lock(hw); 2225 if (rc) 2226 return rc; 2227 2228 if (priv->ap_fw && priv->running_bsses) { 2229 switch (le16_to_cpu(cmd->code)) { 2230 case MWL8K_CMD_SET_RF_CHANNEL: 2231 case MWL8K_CMD_RADIO_CONTROL: 2232 case MWL8K_CMD_RF_TX_POWER: 2233 case MWL8K_CMD_TX_POWER: 2234 case MWL8K_CMD_RF_ANTENNA: 2235 case MWL8K_CMD_RTS_THRESHOLD: 2236 case MWL8K_CMD_MIMO_CONFIG: 2237 bitmap = priv->running_bsses; 2238 mwl8k_enable_bsses(hw, false, bitmap); 2239 break; 2240 } 2241 } 2242 2243 cmd->result = (__force __le16) 0xffff; 2244 dma_size = le16_to_cpu(cmd->length); 2245 dma_addr = dma_map_single(&priv->pdev->dev, cmd, dma_size, 2246 DMA_BIDIRECTIONAL); 2247 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) { 2248 rc = -ENOMEM; 2249 goto exit; 2250 } 2251 2252 priv->hostcmd_wait = &cmd_wait; 2253 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 2254 iowrite32(MWL8K_H2A_INT_DOORBELL, 2255 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2256 iowrite32(MWL8K_H2A_INT_DUMMY, 2257 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2258 2259 timeout = wait_for_completion_timeout(&cmd_wait, 2260 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); 2261 2262 priv->hostcmd_wait = NULL; 2263 2264 2265 dma_unmap_single(&priv->pdev->dev, dma_addr, dma_size, 2266 DMA_BIDIRECTIONAL); 2267 2268 if (!timeout) { 2269 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n", 2270 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2271 MWL8K_CMD_TIMEOUT_MS); 2272 rc = -ETIMEDOUT; 2273 } else { 2274 int ms; 2275 2276 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout); 2277 2278 rc = cmd->result ? -EINVAL : 0; 2279 if (rc) 2280 wiphy_err(hw->wiphy, "Command %s error 0x%x\n", 2281 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2282 le16_to_cpu(cmd->result)); 2283 else if (ms > 2000) 2284 wiphy_notice(hw->wiphy, "Command %s took %d ms\n", 2285 mwl8k_cmd_name(cmd->code, 2286 buf, sizeof(buf)), 2287 ms); 2288 } 2289 2290exit: 2291 if (bitmap) 2292 mwl8k_enable_bsses(hw, true, bitmap); 2293 2294 mwl8k_fw_unlock(hw); 2295 2296 return rc; 2297} 2298 2299static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw, 2300 struct ieee80211_vif *vif, 2301 struct mwl8k_cmd_pkt *cmd) 2302{ 2303 if (vif != NULL) 2304 cmd->macid = MWL8K_VIF(vif)->macid; 2305 return mwl8k_post_cmd(hw, cmd); 2306} 2307 2308/* 2309 * Setup code shared between STA and AP firmware images. 2310 */ 2311static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw) 2312{ 2313 struct mwl8k_priv *priv = hw->priv; 2314 2315 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24)); 2316 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24)); 2317 2318 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24)); 2319 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24)); 2320 2321 priv->band_24.band = NL80211_BAND_2GHZ; 2322 priv->band_24.channels = priv->channels_24; 2323 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24); 2324 priv->band_24.bitrates = priv->rates_24; 2325 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24); 2326 2327 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24; 2328} 2329 2330static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw) 2331{ 2332 struct mwl8k_priv *priv = hw->priv; 2333 2334 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50)); 2335 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50)); 2336 2337 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50)); 2338 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50)); 2339 2340 priv->band_50.band = NL80211_BAND_5GHZ; 2341 priv->band_50.channels = priv->channels_50; 2342 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50); 2343 priv->band_50.bitrates = priv->rates_50; 2344 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50); 2345 2346 hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50; 2347} 2348 2349/* 2350 * CMD_GET_HW_SPEC (STA version). 2351 */ 2352struct mwl8k_cmd_get_hw_spec_sta { 2353 struct mwl8k_cmd_pkt header; 2354 __u8 hw_rev; 2355 __u8 host_interface; 2356 __le16 num_mcaddrs; 2357 __u8 perm_addr[ETH_ALEN]; 2358 __le16 region_code; 2359 __le32 fw_rev; 2360 __le32 ps_cookie; 2361 __le32 caps; 2362 __u8 mcs_bitmap[16]; 2363 __le32 rx_queue_ptr; 2364 __le32 num_tx_queues; 2365 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES]; 2366 __le32 caps2; 2367 __le32 num_tx_desc_per_queue; 2368 __le32 total_rxd; 2369} __packed; 2370 2371#define MWL8K_CAP_MAX_AMSDU 0x20000000 2372#define MWL8K_CAP_GREENFIELD 0x08000000 2373#define MWL8K_CAP_AMPDU 0x04000000 2374#define MWL8K_CAP_RX_STBC 0x01000000 2375#define MWL8K_CAP_TX_STBC 0x00800000 2376#define MWL8K_CAP_SHORTGI_40MHZ 0x00400000 2377#define MWL8K_CAP_SHORTGI_20MHZ 0x00200000 2378#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000 2379#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000 2380#define MWL8K_CAP_DELAY_BA 0x00003000 2381#define MWL8K_CAP_MIMO 0x00000200 2382#define MWL8K_CAP_40MHZ 0x00000100 2383#define MWL8K_CAP_BAND_MASK 0x00000007 2384#define MWL8K_CAP_5GHZ 0x00000004 2385#define MWL8K_CAP_2GHZ4 0x00000001 2386 2387static void 2388mwl8k_set_ht_caps(struct ieee80211_hw *hw, 2389 struct ieee80211_supported_band *band, u32 cap) 2390{ 2391 int rx_streams; 2392 int tx_streams; 2393 2394 band->ht_cap.ht_supported = 1; 2395 2396 if (cap & MWL8K_CAP_MAX_AMSDU) 2397 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; 2398 if (cap & MWL8K_CAP_GREENFIELD) 2399 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD; 2400 if (cap & MWL8K_CAP_AMPDU) { 2401 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 2402 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; 2403 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE; 2404 } 2405 if (cap & MWL8K_CAP_RX_STBC) 2406 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC; 2407 if (cap & MWL8K_CAP_TX_STBC) 2408 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC; 2409 if (cap & MWL8K_CAP_SHORTGI_40MHZ) 2410 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; 2411 if (cap & MWL8K_CAP_SHORTGI_20MHZ) 2412 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; 2413 if (cap & MWL8K_CAP_DELAY_BA) 2414 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA; 2415 if (cap & MWL8K_CAP_40MHZ) 2416 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; 2417 2418 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK); 2419 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK); 2420 2421 band->ht_cap.mcs.rx_mask[0] = 0xff; 2422 if (rx_streams >= 2) 2423 band->ht_cap.mcs.rx_mask[1] = 0xff; 2424 if (rx_streams >= 3) 2425 band->ht_cap.mcs.rx_mask[2] = 0xff; 2426 band->ht_cap.mcs.rx_mask[4] = 0x01; 2427 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 2428 2429 if (rx_streams != tx_streams) { 2430 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; 2431 band->ht_cap.mcs.tx_params |= (tx_streams - 1) << 2432 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; 2433 } 2434} 2435 2436static void 2437mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps) 2438{ 2439 struct mwl8k_priv *priv = hw->priv; 2440 2441 if (priv->caps) 2442 return; 2443 2444 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) { 2445 mwl8k_setup_2ghz_band(hw); 2446 if (caps & MWL8K_CAP_MIMO) 2447 mwl8k_set_ht_caps(hw, &priv->band_24, caps); 2448 } 2449 2450 if (caps & MWL8K_CAP_5GHZ) { 2451 mwl8k_setup_5ghz_band(hw); 2452 if (caps & MWL8K_CAP_MIMO) 2453 mwl8k_set_ht_caps(hw, &priv->band_50, caps); 2454 } 2455 2456 priv->caps = caps; 2457} 2458 2459static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw) 2460{ 2461 struct mwl8k_priv *priv = hw->priv; 2462 struct mwl8k_cmd_get_hw_spec_sta *cmd; 2463 int rc; 2464 int i; 2465 2466 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2467 if (cmd == NULL) 2468 return -ENOMEM; 2469 2470 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2471 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2472 2473 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2474 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2475 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2476 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2477 for (i = 0; i < mwl8k_tx_queues(priv); i++) 2478 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma); 2479 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2480 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2481 2482 rc = mwl8k_post_cmd(hw, &cmd->header); 2483 2484 if (!rc) { 2485 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2486 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2487 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2488 priv->hw_rev = cmd->hw_rev; 2489 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2490 priv->ap_macids_supported = 0x00000000; 2491 priv->sta_macids_supported = 0x00000001; 2492 } 2493 2494 kfree(cmd); 2495 return rc; 2496} 2497 2498/* 2499 * CMD_GET_HW_SPEC (AP version). 2500 */ 2501struct mwl8k_cmd_get_hw_spec_ap { 2502 struct mwl8k_cmd_pkt header; 2503 __u8 hw_rev; 2504 __u8 host_interface; 2505 __le16 num_wcb; 2506 __le16 num_mcaddrs; 2507 __u8 perm_addr[ETH_ALEN]; 2508 __le16 region_code; 2509 __le16 num_antenna; 2510 __le32 fw_rev; 2511 __le32 wcbbase0; 2512 __le32 rxwrptr; 2513 __le32 rxrdptr; 2514 __le32 ps_cookie; 2515 __le32 wcbbase1; 2516 __le32 wcbbase2; 2517 __le32 wcbbase3; 2518 __le32 fw_api_version; 2519 __le32 caps; 2520 __le32 num_of_ampdu_queues; 2521 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES]; 2522} __packed; 2523 2524static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw) 2525{ 2526 struct mwl8k_priv *priv = hw->priv; 2527 struct mwl8k_cmd_get_hw_spec_ap *cmd; 2528 int rc, i; 2529 u32 api_version; 2530 2531 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2532 if (cmd == NULL) 2533 return -ENOMEM; 2534 2535 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2536 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2537 2538 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2539 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2540 2541 rc = mwl8k_post_cmd(hw, &cmd->header); 2542 2543 if (!rc) { 2544 int off; 2545 2546 api_version = le32_to_cpu(cmd->fw_api_version); 2547 if (priv->device_info->fw_api_ap != api_version) { 2548 printk(KERN_ERR "%s: Unsupported fw API version for %s." 2549 " Expected %d got %d.\n", MWL8K_NAME, 2550 priv->device_info->part_name, 2551 priv->device_info->fw_api_ap, 2552 api_version); 2553 rc = -EINVAL; 2554 goto done; 2555 } 2556 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2557 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2558 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2559 priv->hw_rev = cmd->hw_rev; 2560 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2561 priv->ap_macids_supported = 0x000000ff; 2562 priv->sta_macids_supported = 0x00000100; 2563 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues); 2564 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) { 2565 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues" 2566 " but we only support %d.\n", 2567 priv->num_ampdu_queues, 2568 MWL8K_MAX_AMPDU_QUEUES); 2569 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES; 2570 } 2571 off = le32_to_cpu(cmd->rxwrptr) & 0xffff; 2572 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2573 2574 off = le32_to_cpu(cmd->rxrdptr) & 0xffff; 2575 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2576 2577 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff; 2578 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff; 2579 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff; 2580 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff; 2581 2582 for (i = 0; i < priv->num_ampdu_queues; i++) 2583 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] = 2584 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff; 2585 } 2586 2587done: 2588 kfree(cmd); 2589 return rc; 2590} 2591 2592/* 2593 * CMD_SET_HW_SPEC. 2594 */ 2595struct mwl8k_cmd_set_hw_spec { 2596 struct mwl8k_cmd_pkt header; 2597 __u8 hw_rev; 2598 __u8 host_interface; 2599 __le16 num_mcaddrs; 2600 __u8 perm_addr[ETH_ALEN]; 2601 __le16 region_code; 2602 __le32 fw_rev; 2603 __le32 ps_cookie; 2604 __le32 caps; 2605 __le32 rx_queue_ptr; 2606 __le32 num_tx_queues; 2607 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES]; 2608 __le32 flags; 2609 __le32 num_tx_desc_per_queue; 2610 __le32 total_rxd; 2611} __packed; 2612 2613/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause 2614 * packets to expire 500 ms after the timestamp in the tx descriptor. That is, 2615 * the packets that are queued for more than 500ms, will be dropped in the 2616 * hardware. This helps minimizing the issues caused due to head-of-line 2617 * blocking where a slow client can hog the bandwidth and affect traffic to a 2618 * faster client. 2619 */ 2620#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400 2621#define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200 2622#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080 2623#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020 2624#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010 2625 2626static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw) 2627{ 2628 struct mwl8k_priv *priv = hw->priv; 2629 struct mwl8k_cmd_set_hw_spec *cmd; 2630 int rc; 2631 int i; 2632 2633 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2634 if (cmd == NULL) 2635 return -ENOMEM; 2636 2637 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC); 2638 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2639 2640 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2641 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2642 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2643 2644 /* 2645 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in 2646 * that order. Firmware has Q3 as highest priority and Q0 as lowest 2647 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the 2648 * priority is interpreted the right way in firmware. 2649 */ 2650 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 2651 int j = mwl8k_tx_queues(priv) - 1 - i; 2652 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma); 2653 } 2654 2655 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT | 2656 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP | 2657 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON | 2658 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY | 2659 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR); 2660 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2661 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2662 2663 rc = mwl8k_post_cmd(hw, &cmd->header); 2664 kfree(cmd); 2665 2666 return rc; 2667} 2668 2669/* 2670 * CMD_MAC_MULTICAST_ADR. 2671 */ 2672struct mwl8k_cmd_mac_multicast_adr { 2673 struct mwl8k_cmd_pkt header; 2674 __le16 action; 2675 __le16 numaddr; 2676 __u8 addr[][ETH_ALEN]; 2677}; 2678 2679#define MWL8K_ENABLE_RX_DIRECTED 0x0001 2680#define MWL8K_ENABLE_RX_MULTICAST 0x0002 2681#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004 2682#define MWL8K_ENABLE_RX_BROADCAST 0x0008 2683 2684static struct mwl8k_cmd_pkt * 2685__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti, 2686 struct netdev_hw_addr_list *mc_list) 2687{ 2688 struct mwl8k_priv *priv = hw->priv; 2689 struct mwl8k_cmd_mac_multicast_adr *cmd; 2690 int size; 2691 int mc_count = 0; 2692 2693 if (mc_list) 2694 mc_count = netdev_hw_addr_list_count(mc_list); 2695 2696 if (allmulti || mc_count > priv->num_mcaddrs) { 2697 allmulti = 1; 2698 mc_count = 0; 2699 } 2700 2701 size = sizeof(*cmd) + mc_count * ETH_ALEN; 2702 2703 cmd = kzalloc(size, GFP_ATOMIC); 2704 if (cmd == NULL) 2705 return NULL; 2706 2707 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); 2708 cmd->header.length = cpu_to_le16(size); 2709 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED | 2710 MWL8K_ENABLE_RX_BROADCAST); 2711 2712 if (allmulti) { 2713 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST); 2714 } else if (mc_count) { 2715 struct netdev_hw_addr *ha; 2716 int i = 0; 2717 2718 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); 2719 cmd->numaddr = cpu_to_le16(mc_count); 2720 netdev_hw_addr_list_for_each(ha, mc_list) { 2721 memcpy(cmd->addr[i], ha->addr, ETH_ALEN); 2722 } 2723 } 2724 2725 return &cmd->header; 2726} 2727 2728/* 2729 * CMD_GET_STAT. 2730 */ 2731struct mwl8k_cmd_get_stat { 2732 struct mwl8k_cmd_pkt header; 2733 __le32 stats[64]; 2734} __packed; 2735 2736#define MWL8K_STAT_ACK_FAILURE 9 2737#define MWL8K_STAT_RTS_FAILURE 12 2738#define MWL8K_STAT_FCS_ERROR 24 2739#define MWL8K_STAT_RTS_SUCCESS 11 2740 2741static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw, 2742 struct ieee80211_low_level_stats *stats) 2743{ 2744 struct mwl8k_cmd_get_stat *cmd; 2745 int rc; 2746 2747 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2748 if (cmd == NULL) 2749 return -ENOMEM; 2750 2751 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); 2752 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2753 2754 rc = mwl8k_post_cmd(hw, &cmd->header); 2755 if (!rc) { 2756 stats->dot11ACKFailureCount = 2757 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); 2758 stats->dot11RTSFailureCount = 2759 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); 2760 stats->dot11FCSErrorCount = 2761 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); 2762 stats->dot11RTSSuccessCount = 2763 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); 2764 } 2765 kfree(cmd); 2766 2767 return rc; 2768} 2769 2770/* 2771 * CMD_RADIO_CONTROL. 2772 */ 2773struct mwl8k_cmd_radio_control { 2774 struct mwl8k_cmd_pkt header; 2775 __le16 action; 2776 __le16 control; 2777 __le16 radio_on; 2778} __packed; 2779 2780static int 2781mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force) 2782{ 2783 struct mwl8k_priv *priv = hw->priv; 2784 struct mwl8k_cmd_radio_control *cmd; 2785 int rc; 2786 2787 if (enable == priv->radio_on && !force) 2788 return 0; 2789 2790 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2791 if (cmd == NULL) 2792 return -ENOMEM; 2793 2794 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); 2795 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2796 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2797 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1); 2798 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); 2799 2800 rc = mwl8k_post_cmd(hw, &cmd->header); 2801 kfree(cmd); 2802 2803 if (!rc) 2804 priv->radio_on = enable; 2805 2806 return rc; 2807} 2808 2809static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw) 2810{ 2811 return mwl8k_cmd_radio_control(hw, 0, 0); 2812} 2813 2814static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw) 2815{ 2816 return mwl8k_cmd_radio_control(hw, 1, 0); 2817} 2818 2819static int 2820mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) 2821{ 2822 struct mwl8k_priv *priv = hw->priv; 2823 2824 priv->radio_short_preamble = short_preamble; 2825 2826 return mwl8k_cmd_radio_control(hw, 1, 1); 2827} 2828 2829/* 2830 * CMD_RF_TX_POWER. 2831 */ 2832#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8 2833 2834struct mwl8k_cmd_rf_tx_power { 2835 struct mwl8k_cmd_pkt header; 2836 __le16 action; 2837 __le16 support_level; 2838 __le16 current_level; 2839 __le16 reserved; 2840 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL]; 2841} __packed; 2842 2843static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm) 2844{ 2845 struct mwl8k_cmd_rf_tx_power *cmd; 2846 int rc; 2847 2848 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2849 if (cmd == NULL) 2850 return -ENOMEM; 2851 2852 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); 2853 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2854 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2855 cmd->support_level = cpu_to_le16(dBm); 2856 2857 rc = mwl8k_post_cmd(hw, &cmd->header); 2858 kfree(cmd); 2859 2860 return rc; 2861} 2862 2863/* 2864 * CMD_TX_POWER. 2865 */ 2866#define MWL8K_TX_POWER_LEVEL_TOTAL 12 2867 2868struct mwl8k_cmd_tx_power { 2869 struct mwl8k_cmd_pkt header; 2870 __le16 action; 2871 __le16 band; 2872 __le16 channel; 2873 __le16 bw; 2874 __le16 sub_ch; 2875 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; 2876} __packed; 2877 2878static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw, 2879 struct ieee80211_conf *conf, 2880 unsigned short pwr) 2881{ 2882 struct ieee80211_channel *channel = conf->chandef.chan; 2883 enum nl80211_channel_type channel_type = 2884 cfg80211_get_chandef_type(&conf->chandef); 2885 struct mwl8k_cmd_tx_power *cmd; 2886 int rc; 2887 int i; 2888 2889 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2890 if (cmd == NULL) 2891 return -ENOMEM; 2892 2893 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER); 2894 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2895 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST); 2896 2897 if (channel->band == NL80211_BAND_2GHZ) 2898 cmd->band = cpu_to_le16(0x1); 2899 else if (channel->band == NL80211_BAND_5GHZ) 2900 cmd->band = cpu_to_le16(0x4); 2901 2902 cmd->channel = cpu_to_le16(channel->hw_value); 2903 2904 if (channel_type == NL80211_CHAN_NO_HT || 2905 channel_type == NL80211_CHAN_HT20) { 2906 cmd->bw = cpu_to_le16(0x2); 2907 } else { 2908 cmd->bw = cpu_to_le16(0x4); 2909 if (channel_type == NL80211_CHAN_HT40MINUS) 2910 cmd->sub_ch = cpu_to_le16(0x3); 2911 else if (channel_type == NL80211_CHAN_HT40PLUS) 2912 cmd->sub_ch = cpu_to_le16(0x1); 2913 } 2914 2915 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++) 2916 cmd->power_level_list[i] = cpu_to_le16(pwr); 2917 2918 rc = mwl8k_post_cmd(hw, &cmd->header); 2919 kfree(cmd); 2920 2921 return rc; 2922} 2923 2924/* 2925 * CMD_RF_ANTENNA. 2926 */ 2927struct mwl8k_cmd_rf_antenna { 2928 struct mwl8k_cmd_pkt header; 2929 __le16 antenna; 2930 __le16 mode; 2931} __packed; 2932 2933#define MWL8K_RF_ANTENNA_RX 1 2934#define MWL8K_RF_ANTENNA_TX 2 2935 2936static int 2937mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask) 2938{ 2939 struct mwl8k_cmd_rf_antenna *cmd; 2940 int rc; 2941 2942 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2943 if (cmd == NULL) 2944 return -ENOMEM; 2945 2946 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA); 2947 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2948 cmd->antenna = cpu_to_le16(antenna); 2949 cmd->mode = cpu_to_le16(mask); 2950 2951 rc = mwl8k_post_cmd(hw, &cmd->header); 2952 kfree(cmd); 2953 2954 return rc; 2955} 2956 2957/* 2958 * CMD_SET_BEACON. 2959 */ 2960struct mwl8k_cmd_set_beacon { 2961 struct mwl8k_cmd_pkt header; 2962 __le16 beacon_len; 2963 __u8 beacon[]; 2964}; 2965 2966static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw, 2967 struct ieee80211_vif *vif, u8 *beacon, int len) 2968{ 2969 struct mwl8k_cmd_set_beacon *cmd; 2970 int rc; 2971 2972 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL); 2973 if (cmd == NULL) 2974 return -ENOMEM; 2975 2976 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON); 2977 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len); 2978 cmd->beacon_len = cpu_to_le16(len); 2979 memcpy(cmd->beacon, beacon, len); 2980 2981 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 2982 kfree(cmd); 2983 2984 return rc; 2985} 2986 2987/* 2988 * CMD_SET_PRE_SCAN. 2989 */ 2990struct mwl8k_cmd_set_pre_scan { 2991 struct mwl8k_cmd_pkt header; 2992} __packed; 2993 2994static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) 2995{ 2996 struct mwl8k_cmd_set_pre_scan *cmd; 2997 int rc; 2998 2999 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3000 if (cmd == NULL) 3001 return -ENOMEM; 3002 3003 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); 3004 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3005 3006 rc = mwl8k_post_cmd(hw, &cmd->header); 3007 kfree(cmd); 3008 3009 return rc; 3010} 3011 3012/* 3013 * CMD_BBP_REG_ACCESS. 3014 */ 3015struct mwl8k_cmd_bbp_reg_access { 3016 struct mwl8k_cmd_pkt header; 3017 __le16 action; 3018 __le16 offset; 3019 u8 value; 3020 u8 rsrv[3]; 3021} __packed; 3022 3023static int 3024mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw, 3025 u16 action, 3026 u16 offset, 3027 u8 *value) 3028{ 3029 struct mwl8k_cmd_bbp_reg_access *cmd; 3030 int rc; 3031 3032 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3033 if (cmd == NULL) 3034 return -ENOMEM; 3035 3036 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS); 3037 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3038 cmd->action = cpu_to_le16(action); 3039 cmd->offset = cpu_to_le16(offset); 3040 3041 rc = mwl8k_post_cmd(hw, &cmd->header); 3042 3043 if (!rc) 3044 *value = cmd->value; 3045 else 3046 *value = 0; 3047 3048 kfree(cmd); 3049 3050 return rc; 3051} 3052 3053/* 3054 * CMD_SET_POST_SCAN. 3055 */ 3056struct mwl8k_cmd_set_post_scan { 3057 struct mwl8k_cmd_pkt header; 3058 __le32 isibss; 3059 __u8 bssid[ETH_ALEN]; 3060} __packed; 3061 3062static int 3063mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac) 3064{ 3065 struct mwl8k_cmd_set_post_scan *cmd; 3066 int rc; 3067 3068 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3069 if (cmd == NULL) 3070 return -ENOMEM; 3071 3072 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); 3073 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3074 cmd->isibss = 0; 3075 memcpy(cmd->bssid, mac, ETH_ALEN); 3076 3077 rc = mwl8k_post_cmd(hw, &cmd->header); 3078 kfree(cmd); 3079 3080 return rc; 3081} 3082 3083static int freq_to_idx(struct mwl8k_priv *priv, int freq) 3084{ 3085 struct ieee80211_supported_band *sband; 3086 int band, ch, idx = 0; 3087 3088 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) { 3089 sband = priv->hw->wiphy->bands[band]; 3090 if (!sband) 3091 continue; 3092 3093 for (ch = 0; ch < sband->n_channels; ch++, idx++) 3094 if (sband->channels[ch].center_freq == freq) 3095 goto exit; 3096 } 3097 3098exit: 3099 return idx; 3100} 3101 3102static void mwl8k_update_survey(struct mwl8k_priv *priv, 3103 struct ieee80211_channel *channel) 3104{ 3105 u32 cca_cnt, rx_rdy; 3106 s8 nf = 0, idx; 3107 struct survey_info *survey; 3108 3109 idx = freq_to_idx(priv, priv->acs_chan->center_freq); 3110 if (idx >= MWL8K_NUM_CHANS) { 3111 wiphy_err(priv->hw->wiphy, "Failed to update survey\n"); 3112 return; 3113 } 3114 3115 survey = &priv->survey[idx]; 3116 3117 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG); 3118 cca_cnt /= 1000; /* uSecs to mSecs */ 3119 survey->time_busy = (u64) cca_cnt; 3120 3121 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG); 3122 rx_rdy /= 1000; /* uSecs to mSecs */ 3123 survey->time_rx = (u64) rx_rdy; 3124 3125 priv->channel_time = jiffies - priv->channel_time; 3126 survey->time = jiffies_to_msecs(priv->channel_time); 3127 3128 survey->channel = channel; 3129 3130 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf); 3131 3132 /* Make sure sign is negative else ACS at hostapd fails */ 3133 survey->noise = nf * -1; 3134 3135 survey->filled = SURVEY_INFO_NOISE_DBM | 3136 SURVEY_INFO_TIME | 3137 SURVEY_INFO_TIME_BUSY | 3138 SURVEY_INFO_TIME_RX; 3139} 3140 3141/* 3142 * CMD_SET_RF_CHANNEL. 3143 */ 3144struct mwl8k_cmd_set_rf_channel { 3145 struct mwl8k_cmd_pkt header; 3146 __le16 action; 3147 __u8 current_channel; 3148 __le32 channel_flags; 3149} __packed; 3150 3151static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, 3152 struct ieee80211_conf *conf) 3153{ 3154 struct ieee80211_channel *channel = conf->chandef.chan; 3155 enum nl80211_channel_type channel_type = 3156 cfg80211_get_chandef_type(&conf->chandef); 3157 struct mwl8k_cmd_set_rf_channel *cmd; 3158 struct mwl8k_priv *priv = hw->priv; 3159 int rc; 3160 3161 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3162 if (cmd == NULL) 3163 return -ENOMEM; 3164 3165 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); 3166 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3167 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3168 cmd->current_channel = channel->hw_value; 3169 3170 if (channel->band == NL80211_BAND_2GHZ) 3171 cmd->channel_flags |= cpu_to_le32(0x00000001); 3172 else if (channel->band == NL80211_BAND_5GHZ) 3173 cmd->channel_flags |= cpu_to_le32(0x00000004); 3174 3175 if (!priv->sw_scan_start) { 3176 if (channel_type == NL80211_CHAN_NO_HT || 3177 channel_type == NL80211_CHAN_HT20) 3178 cmd->channel_flags |= cpu_to_le32(0x00000080); 3179 else if (channel_type == NL80211_CHAN_HT40MINUS) 3180 cmd->channel_flags |= cpu_to_le32(0x000001900); 3181 else if (channel_type == NL80211_CHAN_HT40PLUS) 3182 cmd->channel_flags |= cpu_to_le32(0x000000900); 3183 } else { 3184 cmd->channel_flags |= cpu_to_le32(0x00000080); 3185 } 3186 3187 if (priv->sw_scan_start) { 3188 /* Store current channel stats 3189 * before switching to newer one. 3190 * This will be processed only for AP fw. 3191 */ 3192 if (priv->channel_time != 0) 3193 mwl8k_update_survey(priv, priv->acs_chan); 3194 3195 priv->channel_time = jiffies; 3196 priv->acs_chan = channel; 3197 } 3198 3199 rc = mwl8k_post_cmd(hw, &cmd->header); 3200 kfree(cmd); 3201 3202 return rc; 3203} 3204 3205/* 3206 * CMD_SET_AID. 3207 */ 3208#define MWL8K_FRAME_PROT_DISABLED 0x00 3209#define MWL8K_FRAME_PROT_11G 0x07 3210#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 3211#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 3212 3213struct mwl8k_cmd_update_set_aid { 3214 struct mwl8k_cmd_pkt header; 3215 __le16 aid; 3216 3217 /* AP's MAC address (BSSID) */ 3218 __u8 bssid[ETH_ALEN]; 3219 __le16 protection_mode; 3220 __u8 supp_rates[14]; 3221} __packed; 3222 3223static void legacy_rate_mask_to_array(u8 *rates, u32 mask) 3224{ 3225 int i; 3226 int j; 3227 3228 /* 3229 * Clear nonstandard rate 4. 3230 */ 3231 mask &= 0x1fef; 3232 3233 for (i = 0, j = 0; i < 13; i++) { 3234 if (mask & (1 << i)) 3235 rates[j++] = mwl8k_rates_24[i].hw_value; 3236 } 3237} 3238 3239static int 3240mwl8k_cmd_set_aid(struct ieee80211_hw *hw, 3241 struct ieee80211_vif *vif, u32 legacy_rate_mask) 3242{ 3243 struct mwl8k_cmd_update_set_aid *cmd; 3244 u16 prot_mode; 3245 int rc; 3246 3247 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3248 if (cmd == NULL) 3249 return -ENOMEM; 3250 3251 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); 3252 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3253 cmd->aid = cpu_to_le16(vif->cfg.aid); 3254 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 3255 3256 if (vif->bss_conf.use_cts_prot) { 3257 prot_mode = MWL8K_FRAME_PROT_11G; 3258 } else { 3259 switch (vif->bss_conf.ht_operation_mode & 3260 IEEE80211_HT_OP_MODE_PROTECTION) { 3261 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 3262 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; 3263 break; 3264 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 3265 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; 3266 break; 3267 default: 3268 prot_mode = MWL8K_FRAME_PROT_DISABLED; 3269 break; 3270 } 3271 } 3272 cmd->protection_mode = cpu_to_le16(prot_mode); 3273 3274 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask); 3275 3276 rc = mwl8k_post_cmd(hw, &cmd->header); 3277 kfree(cmd); 3278 3279 return rc; 3280} 3281 3282/* 3283 * CMD_SET_RATE. 3284 */ 3285struct mwl8k_cmd_set_rate { 3286 struct mwl8k_cmd_pkt header; 3287 __u8 legacy_rates[14]; 3288 3289 /* Bitmap for supported MCS codes. */ 3290 __u8 mcs_set[16]; 3291 __u8 reserved[16]; 3292} __packed; 3293 3294static int 3295mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3296 u32 legacy_rate_mask, u8 *mcs_rates) 3297{ 3298 struct mwl8k_cmd_set_rate *cmd; 3299 int rc; 3300 3301 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3302 if (cmd == NULL) 3303 return -ENOMEM; 3304 3305 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); 3306 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3307 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask); 3308 memcpy(cmd->mcs_set, mcs_rates, 16); 3309 3310 rc = mwl8k_post_cmd(hw, &cmd->header); 3311 kfree(cmd); 3312 3313 return rc; 3314} 3315 3316/* 3317 * CMD_FINALIZE_JOIN. 3318 */ 3319#define MWL8K_FJ_BEACON_MAXLEN 128 3320 3321struct mwl8k_cmd_finalize_join { 3322 struct mwl8k_cmd_pkt header; 3323 __le32 sleep_interval; /* Number of beacon periods to sleep */ 3324 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; 3325} __packed; 3326 3327static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame, 3328 int framelen, int dtim) 3329{ 3330 struct mwl8k_cmd_finalize_join *cmd; 3331 struct ieee80211_mgmt *payload = frame; 3332 int payload_len; 3333 int rc; 3334 3335 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3336 if (cmd == NULL) 3337 return -ENOMEM; 3338 3339 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); 3340 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3341 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1); 3342 3343 payload_len = framelen - ieee80211_hdrlen(payload->frame_control); 3344 if (payload_len < 0) 3345 payload_len = 0; 3346 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN) 3347 payload_len = MWL8K_FJ_BEACON_MAXLEN; 3348 3349 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); 3350 3351 rc = mwl8k_post_cmd(hw, &cmd->header); 3352 kfree(cmd); 3353 3354 return rc; 3355} 3356 3357/* 3358 * CMD_SET_RTS_THRESHOLD. 3359 */ 3360struct mwl8k_cmd_set_rts_threshold { 3361 struct mwl8k_cmd_pkt header; 3362 __le16 action; 3363 __le16 threshold; 3364} __packed; 3365 3366static int 3367mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh) 3368{ 3369 struct mwl8k_cmd_set_rts_threshold *cmd; 3370 int rc; 3371 3372 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3373 if (cmd == NULL) 3374 return -ENOMEM; 3375 3376 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); 3377 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3378 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3379 cmd->threshold = cpu_to_le16(rts_thresh); 3380 3381 rc = mwl8k_post_cmd(hw, &cmd->header); 3382 kfree(cmd); 3383 3384 return rc; 3385} 3386 3387/* 3388 * CMD_SET_SLOT. 3389 */ 3390struct mwl8k_cmd_set_slot { 3391 struct mwl8k_cmd_pkt header; 3392 __le16 action; 3393 __u8 short_slot; 3394} __packed; 3395 3396static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time) 3397{ 3398 struct mwl8k_cmd_set_slot *cmd; 3399 int rc; 3400 3401 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3402 if (cmd == NULL) 3403 return -ENOMEM; 3404 3405 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); 3406 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3407 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3408 cmd->short_slot = short_slot_time; 3409 3410 rc = mwl8k_post_cmd(hw, &cmd->header); 3411 kfree(cmd); 3412 3413 return rc; 3414} 3415 3416/* 3417 * CMD_SET_EDCA_PARAMS. 3418 */ 3419struct mwl8k_cmd_set_edca_params { 3420 struct mwl8k_cmd_pkt header; 3421 3422 /* See MWL8K_SET_EDCA_XXX below */ 3423 __le16 action; 3424 3425 /* TX opportunity in units of 32 us */ 3426 __le16 txop; 3427 3428 union { 3429 struct { 3430 /* Log exponent of max contention period: 0...15 */ 3431 __le32 log_cw_max; 3432 3433 /* Log exponent of min contention period: 0...15 */ 3434 __le32 log_cw_min; 3435 3436 /* Adaptive interframe spacing in units of 32us */ 3437 __u8 aifs; 3438 3439 /* TX queue to configure */ 3440 __u8 txq; 3441 } ap; 3442 struct { 3443 /* Log exponent of max contention period: 0...15 */ 3444 __u8 log_cw_max; 3445 3446 /* Log exponent of min contention period: 0...15 */ 3447 __u8 log_cw_min; 3448 3449 /* Adaptive interframe spacing in units of 32us */ 3450 __u8 aifs; 3451 3452 /* TX queue to configure */ 3453 __u8 txq; 3454 } sta; 3455 }; 3456} __packed; 3457 3458#define MWL8K_SET_EDCA_CW 0x01 3459#define MWL8K_SET_EDCA_TXOP 0x02 3460#define MWL8K_SET_EDCA_AIFS 0x04 3461 3462#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ 3463 MWL8K_SET_EDCA_TXOP | \ 3464 MWL8K_SET_EDCA_AIFS) 3465 3466static int 3467mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, 3468 __u16 cw_min, __u16 cw_max, 3469 __u8 aifs, __u16 txop) 3470{ 3471 struct mwl8k_priv *priv = hw->priv; 3472 struct mwl8k_cmd_set_edca_params *cmd; 3473 int rc; 3474 3475 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3476 if (cmd == NULL) 3477 return -ENOMEM; 3478 3479 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); 3480 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3481 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); 3482 cmd->txop = cpu_to_le16(txop); 3483 if (priv->ap_fw) { 3484 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1)); 3485 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1)); 3486 cmd->ap.aifs = aifs; 3487 cmd->ap.txq = qnum; 3488 } else { 3489 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1); 3490 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1); 3491 cmd->sta.aifs = aifs; 3492 cmd->sta.txq = qnum; 3493 } 3494 3495 rc = mwl8k_post_cmd(hw, &cmd->header); 3496 kfree(cmd); 3497 3498 return rc; 3499} 3500 3501/* 3502 * CMD_SET_WMM_MODE. 3503 */ 3504struct mwl8k_cmd_set_wmm_mode { 3505 struct mwl8k_cmd_pkt header; 3506 __le16 action; 3507} __packed; 3508 3509static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable) 3510{ 3511 struct mwl8k_priv *priv = hw->priv; 3512 struct mwl8k_cmd_set_wmm_mode *cmd; 3513 int rc; 3514 3515 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3516 if (cmd == NULL) 3517 return -ENOMEM; 3518 3519 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); 3520 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3521 cmd->action = cpu_to_le16(!!enable); 3522 3523 rc = mwl8k_post_cmd(hw, &cmd->header); 3524 kfree(cmd); 3525 3526 if (!rc) 3527 priv->wmm_enabled = enable; 3528 3529 return rc; 3530} 3531 3532/* 3533 * CMD_MIMO_CONFIG. 3534 */ 3535struct mwl8k_cmd_mimo_config { 3536 struct mwl8k_cmd_pkt header; 3537 __le32 action; 3538 __u8 rx_antenna_map; 3539 __u8 tx_antenna_map; 3540} __packed; 3541 3542static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) 3543{ 3544 struct mwl8k_cmd_mimo_config *cmd; 3545 int rc; 3546 3547 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3548 if (cmd == NULL) 3549 return -ENOMEM; 3550 3551 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); 3552 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3553 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); 3554 cmd->rx_antenna_map = rx; 3555 cmd->tx_antenna_map = tx; 3556 3557 rc = mwl8k_post_cmd(hw, &cmd->header); 3558 kfree(cmd); 3559 3560 return rc; 3561} 3562 3563/* 3564 * CMD_USE_FIXED_RATE (STA version). 3565 */ 3566struct mwl8k_cmd_use_fixed_rate_sta { 3567 struct mwl8k_cmd_pkt header; 3568 __le32 action; 3569 __le32 allow_rate_drop; 3570 __le32 num_rates; 3571 struct { 3572 __le32 is_ht_rate; 3573 __le32 enable_retry; 3574 __le32 rate; 3575 __le32 retry_count; 3576 } rate_entry[8]; 3577 __le32 rate_type; 3578 __le32 reserved1; 3579 __le32 reserved2; 3580} __packed; 3581 3582#define MWL8K_USE_AUTO_RATE 0x0002 3583#define MWL8K_UCAST_RATE 0 3584 3585static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw) 3586{ 3587 struct mwl8k_cmd_use_fixed_rate_sta *cmd; 3588 int rc; 3589 3590 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3591 if (cmd == NULL) 3592 return -ENOMEM; 3593 3594 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3595 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3596 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3597 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE); 3598 3599 rc = mwl8k_post_cmd(hw, &cmd->header); 3600 kfree(cmd); 3601 3602 return rc; 3603} 3604 3605/* 3606 * CMD_USE_FIXED_RATE (AP version). 3607 */ 3608struct mwl8k_cmd_use_fixed_rate_ap { 3609 struct mwl8k_cmd_pkt header; 3610 __le32 action; 3611 __le32 allow_rate_drop; 3612 __le32 num_rates; 3613 struct mwl8k_rate_entry_ap { 3614 __le32 is_ht_rate; 3615 __le32 enable_retry; 3616 __le32 rate; 3617 __le32 retry_count; 3618 } rate_entry[4]; 3619 u8 multicast_rate; 3620 u8 multicast_rate_type; 3621 u8 management_rate; 3622} __packed; 3623 3624static int 3625mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt) 3626{ 3627 struct mwl8k_cmd_use_fixed_rate_ap *cmd; 3628 int rc; 3629 3630 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3631 if (cmd == NULL) 3632 return -ENOMEM; 3633 3634 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3635 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3636 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3637 cmd->multicast_rate = mcast; 3638 cmd->management_rate = mgmt; 3639 3640 rc = mwl8k_post_cmd(hw, &cmd->header); 3641 kfree(cmd); 3642 3643 return rc; 3644} 3645 3646/* 3647 * CMD_ENABLE_SNIFFER. 3648 */ 3649struct mwl8k_cmd_enable_sniffer { 3650 struct mwl8k_cmd_pkt header; 3651 __le32 action; 3652} __packed; 3653 3654static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable) 3655{ 3656 struct mwl8k_cmd_enable_sniffer *cmd; 3657 int rc; 3658 3659 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3660 if (cmd == NULL) 3661 return -ENOMEM; 3662 3663 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); 3664 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3665 cmd->action = cpu_to_le32(!!enable); 3666 3667 rc = mwl8k_post_cmd(hw, &cmd->header); 3668 kfree(cmd); 3669 3670 return rc; 3671} 3672 3673struct mwl8k_cmd_update_mac_addr { 3674 struct mwl8k_cmd_pkt header; 3675 union { 3676 struct { 3677 __le16 mac_type; 3678 __u8 mac_addr[ETH_ALEN]; 3679 } mbss; 3680 __u8 mac_addr[ETH_ALEN]; 3681 }; 3682} __packed; 3683 3684#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0 3685#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1 3686#define MWL8K_MAC_TYPE_PRIMARY_AP 2 3687#define MWL8K_MAC_TYPE_SECONDARY_AP 3 3688 3689static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw, 3690 struct ieee80211_vif *vif, u8 *mac, bool set) 3691{ 3692 struct mwl8k_priv *priv = hw->priv; 3693 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3694 struct mwl8k_cmd_update_mac_addr *cmd; 3695 int mac_type; 3696 int rc; 3697 3698 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3699 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) { 3700 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported)) 3701 if (priv->ap_fw) 3702 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3703 else 3704 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT; 3705 else 3706 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3707 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) { 3708 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported)) 3709 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3710 else 3711 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP; 3712 } 3713 3714 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3715 if (cmd == NULL) 3716 return -ENOMEM; 3717 3718 if (set) 3719 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR); 3720 else 3721 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR); 3722 3723 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3724 if (priv->ap_fw) { 3725 cmd->mbss.mac_type = cpu_to_le16(mac_type); 3726 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN); 3727 } else { 3728 memcpy(cmd->mac_addr, mac, ETH_ALEN); 3729 } 3730 3731 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3732 kfree(cmd); 3733 3734 return rc; 3735} 3736 3737/* 3738 * MWL8K_CMD_SET_MAC_ADDR. 3739 */ 3740static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, 3741 struct ieee80211_vif *vif, u8 *mac) 3742{ 3743 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true); 3744} 3745 3746/* 3747 * MWL8K_CMD_DEL_MAC_ADDR. 3748 */ 3749static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw, 3750 struct ieee80211_vif *vif, u8 *mac) 3751{ 3752 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false); 3753} 3754 3755/* 3756 * CMD_SET_RATEADAPT_MODE. 3757 */ 3758struct mwl8k_cmd_set_rate_adapt_mode { 3759 struct mwl8k_cmd_pkt header; 3760 __le16 action; 3761 __le16 mode; 3762} __packed; 3763 3764static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode) 3765{ 3766 struct mwl8k_cmd_set_rate_adapt_mode *cmd; 3767 int rc; 3768 3769 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3770 if (cmd == NULL) 3771 return -ENOMEM; 3772 3773 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); 3774 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3775 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3776 cmd->mode = cpu_to_le16(mode); 3777 3778 rc = mwl8k_post_cmd(hw, &cmd->header); 3779 kfree(cmd); 3780 3781 return rc; 3782} 3783 3784/* 3785 * CMD_GET_WATCHDOG_BITMAP. 3786 */ 3787struct mwl8k_cmd_get_watchdog_bitmap { 3788 struct mwl8k_cmd_pkt header; 3789 u8 bitmap; 3790} __packed; 3791 3792static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap) 3793{ 3794 struct mwl8k_cmd_get_watchdog_bitmap *cmd; 3795 int rc; 3796 3797 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3798 if (cmd == NULL) 3799 return -ENOMEM; 3800 3801 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP); 3802 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3803 3804 rc = mwl8k_post_cmd(hw, &cmd->header); 3805 if (!rc) 3806 *bitmap = cmd->bitmap; 3807 3808 kfree(cmd); 3809 3810 return rc; 3811} 3812 3813#define MWL8K_WMM_QUEUE_NUMBER 3 3814 3815static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 3816 u8 idx); 3817 3818static void mwl8k_watchdog_ba_events(struct work_struct *work) 3819{ 3820 int rc; 3821 u8 bitmap = 0, stream_index; 3822 struct mwl8k_ampdu_stream *streams; 3823 struct mwl8k_priv *priv = 3824 container_of(work, struct mwl8k_priv, watchdog_ba_handle); 3825 struct ieee80211_hw *hw = priv->hw; 3826 int i; 3827 u32 status = 0; 3828 3829 mwl8k_fw_lock(hw); 3830 3831 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap); 3832 if (rc) 3833 goto done; 3834 3835 spin_lock(&priv->stream_lock); 3836 3837 /* the bitmap is the hw queue number. Map it to the ampdu queue. */ 3838 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) { 3839 if (bitmap & (1 << i)) { 3840 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) % 3841 TOTAL_HW_TX_QUEUES; 3842 streams = &priv->ampdu[stream_index]; 3843 if (streams->state == AMPDU_STREAM_ACTIVE) { 3844 ieee80211_stop_tx_ba_session(streams->sta, 3845 streams->tid); 3846 spin_unlock(&priv->stream_lock); 3847 mwl8k_destroy_ba(hw, stream_index); 3848 spin_lock(&priv->stream_lock); 3849 } 3850 } 3851 } 3852 3853 spin_unlock(&priv->stream_lock); 3854done: 3855 atomic_dec(&priv->watchdog_event_pending); 3856 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3857 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG), 3858 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3859 mwl8k_fw_unlock(hw); 3860 return; 3861} 3862 3863 3864/* 3865 * CMD_BSS_START. 3866 */ 3867struct mwl8k_cmd_bss_start { 3868 struct mwl8k_cmd_pkt header; 3869 __le32 enable; 3870} __packed; 3871 3872static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw, 3873 struct ieee80211_vif *vif, int enable) 3874{ 3875 struct mwl8k_cmd_bss_start *cmd; 3876 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3877 struct mwl8k_priv *priv = hw->priv; 3878 int rc; 3879 3880 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid))) 3881 return 0; 3882 3883 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid))) 3884 return 0; 3885 3886 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3887 if (cmd == NULL) 3888 return -ENOMEM; 3889 3890 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START); 3891 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3892 cmd->enable = cpu_to_le32(enable); 3893 3894 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3895 kfree(cmd); 3896 3897 if (!rc) { 3898 if (enable) 3899 priv->running_bsses |= (1 << mwl8k_vif->macid); 3900 else 3901 priv->running_bsses &= ~(1 << mwl8k_vif->macid); 3902 } 3903 return rc; 3904} 3905 3906static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap) 3907{ 3908 struct mwl8k_priv *priv = hw->priv; 3909 struct mwl8k_vif *mwl8k_vif, *tmp_vif; 3910 struct ieee80211_vif *vif; 3911 3912 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) { 3913 vif = mwl8k_vif->vif; 3914 3915 if (!(bitmap & (1 << mwl8k_vif->macid))) 3916 continue; 3917 3918 if (vif->type == NL80211_IFTYPE_AP) 3919 mwl8k_cmd_bss_start(hw, vif, enable); 3920 } 3921} 3922/* 3923 * CMD_BASTREAM. 3924 */ 3925 3926/* 3927 * UPSTREAM is tx direction 3928 */ 3929#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00 3930#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01 3931 3932enum ba_stream_action_type { 3933 MWL8K_BA_CREATE, 3934 MWL8K_BA_UPDATE, 3935 MWL8K_BA_DESTROY, 3936 MWL8K_BA_FLUSH, 3937 MWL8K_BA_CHECK, 3938}; 3939 3940 3941struct mwl8k_create_ba_stream { 3942 __le32 flags; 3943 __le32 idle_thrs; 3944 __le32 bar_thrs; 3945 __le32 window_size; 3946 u8 peer_mac_addr[6]; 3947 u8 dialog_token; 3948 u8 tid; 3949 u8 queue_id; 3950 u8 param_info; 3951 __le32 ba_context; 3952 u8 reset_seq_no_flag; 3953 __le16 curr_seq_no; 3954 u8 sta_src_mac_addr[6]; 3955} __packed; 3956 3957struct mwl8k_destroy_ba_stream { 3958 __le32 flags; 3959 __le32 ba_context; 3960} __packed; 3961 3962struct mwl8k_cmd_bastream { 3963 struct mwl8k_cmd_pkt header; 3964 __le32 action; 3965 union { 3966 struct mwl8k_create_ba_stream create_params; 3967 struct mwl8k_destroy_ba_stream destroy_params; 3968 }; 3969} __packed; 3970 3971static int 3972mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 3973 struct ieee80211_vif *vif) 3974{ 3975 struct mwl8k_cmd_bastream *cmd; 3976 int rc; 3977 3978 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3979 if (cmd == NULL) 3980 return -ENOMEM; 3981 3982 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 3983 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3984 3985 cmd->action = cpu_to_le32(MWL8K_BA_CHECK); 3986 3987 cmd->create_params.queue_id = stream->idx; 3988 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr, 3989 ETH_ALEN); 3990 cmd->create_params.tid = stream->tid; 3991 3992 cmd->create_params.flags = 3993 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) | 3994 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM); 3995 3996 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3997 3998 kfree(cmd); 3999 4000 return rc; 4001} 4002 4003static int 4004mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 4005 u8 buf_size, struct ieee80211_vif *vif) 4006{ 4007 struct mwl8k_cmd_bastream *cmd; 4008 int rc; 4009 4010 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4011 if (cmd == NULL) 4012 return -ENOMEM; 4013 4014 4015 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4016 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4017 4018 cmd->action = cpu_to_le32(MWL8K_BA_CREATE); 4019 4020 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size); 4021 cmd->create_params.window_size = cpu_to_le32((u32)buf_size); 4022 cmd->create_params.queue_id = stream->idx; 4023 4024 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN); 4025 cmd->create_params.tid = stream->tid; 4026 cmd->create_params.curr_seq_no = cpu_to_le16(0); 4027 cmd->create_params.reset_seq_no_flag = 1; 4028 4029 cmd->create_params.param_info = 4030 (stream->sta->deflink.ht_cap.ampdu_factor & 4031 IEEE80211_HT_AMPDU_PARM_FACTOR) | 4032 ((stream->sta->deflink.ht_cap.ampdu_density << 2) & 4033 IEEE80211_HT_AMPDU_PARM_DENSITY); 4034 4035 cmd->create_params.flags = 4036 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE | 4037 BASTREAM_FLAG_DIRECTION_UPSTREAM); 4038 4039 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4040 4041 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n", 4042 stream->sta->addr, stream->tid); 4043 kfree(cmd); 4044 4045 return rc; 4046} 4047 4048static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 4049 u8 idx) 4050{ 4051 struct mwl8k_cmd_bastream *cmd; 4052 4053 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4054 if (cmd == NULL) 4055 return; 4056 4057 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4058 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4059 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY); 4060 4061 cmd->destroy_params.ba_context = cpu_to_le32(idx); 4062 mwl8k_post_cmd(hw, &cmd->header); 4063 4064 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx); 4065 4066 kfree(cmd); 4067} 4068 4069/* 4070 * CMD_SET_NEW_STN. 4071 */ 4072struct mwl8k_cmd_set_new_stn { 4073 struct mwl8k_cmd_pkt header; 4074 __le16 aid; 4075 __u8 mac_addr[6]; 4076 __le16 stn_id; 4077 __le16 action; 4078 __le16 rsvd; 4079 __le32 legacy_rates; 4080 __u8 ht_rates[4]; 4081 __le16 cap_info; 4082 __le16 ht_capabilities_info; 4083 __u8 mac_ht_param_info; 4084 __u8 rev; 4085 __u8 control_channel; 4086 __u8 add_channel; 4087 __le16 op_mode; 4088 __le16 stbc; 4089 __u8 add_qos_info; 4090 __u8 is_qos_sta; 4091 __le32 fw_sta_ptr; 4092} __packed; 4093 4094#define MWL8K_STA_ACTION_ADD 0 4095#define MWL8K_STA_ACTION_REMOVE 2 4096 4097static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw, 4098 struct ieee80211_vif *vif, 4099 struct ieee80211_sta *sta) 4100{ 4101 struct mwl8k_cmd_set_new_stn *cmd; 4102 u32 rates; 4103 int rc; 4104 4105 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4106 if (cmd == NULL) 4107 return -ENOMEM; 4108 4109 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4110 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4111 cmd->aid = cpu_to_le16(sta->aid); 4112 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN); 4113 cmd->stn_id = cpu_to_le16(sta->aid); 4114 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD); 4115 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4116 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ]; 4117 else 4118 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5; 4119 cmd->legacy_rates = cpu_to_le32(rates); 4120 if (sta->deflink.ht_cap.ht_supported) { 4121 cmd->ht_rates[0] = sta->deflink.ht_cap.mcs.rx_mask[0]; 4122 cmd->ht_rates[1] = sta->deflink.ht_cap.mcs.rx_mask[1]; 4123 cmd->ht_rates[2] = sta->deflink.ht_cap.mcs.rx_mask[2]; 4124 cmd->ht_rates[3] = sta->deflink.ht_cap.mcs.rx_mask[3]; 4125 cmd->ht_capabilities_info = cpu_to_le16(sta->deflink.ht_cap.cap); 4126 cmd->mac_ht_param_info = (sta->deflink.ht_cap.ampdu_factor & 3) | 4127 ((sta->deflink.ht_cap.ampdu_density & 7) << 2); 4128 cmd->is_qos_sta = 1; 4129 } 4130 4131 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4132 kfree(cmd); 4133 4134 return rc; 4135} 4136 4137static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw, 4138 struct ieee80211_vif *vif) 4139{ 4140 struct mwl8k_cmd_set_new_stn *cmd; 4141 int rc; 4142 4143 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4144 if (cmd == NULL) 4145 return -ENOMEM; 4146 4147 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4148 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4149 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN); 4150 4151 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4152 kfree(cmd); 4153 4154 return rc; 4155} 4156 4157static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw, 4158 struct ieee80211_vif *vif, u8 *addr) 4159{ 4160 struct mwl8k_cmd_set_new_stn *cmd; 4161 struct mwl8k_priv *priv = hw->priv; 4162 int rc, i; 4163 u8 idx; 4164 4165 spin_lock(&priv->stream_lock); 4166 /* Destroy any active ampdu streams for this sta */ 4167 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 4168 struct mwl8k_ampdu_stream *s; 4169 s = &priv->ampdu[i]; 4170 if (s->state != AMPDU_NO_STREAM) { 4171 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) { 4172 if (s->state == AMPDU_STREAM_ACTIVE) { 4173 idx = s->idx; 4174 spin_unlock(&priv->stream_lock); 4175 mwl8k_destroy_ba(hw, idx); 4176 spin_lock(&priv->stream_lock); 4177 } else if (s->state == AMPDU_STREAM_NEW) { 4178 mwl8k_remove_stream(hw, s); 4179 } 4180 } 4181 } 4182 } 4183 4184 spin_unlock(&priv->stream_lock); 4185 4186 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4187 if (cmd == NULL) 4188 return -ENOMEM; 4189 4190 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4191 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4192 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4193 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE); 4194 4195 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4196 kfree(cmd); 4197 4198 return rc; 4199} 4200 4201/* 4202 * CMD_UPDATE_ENCRYPTION. 4203 */ 4204 4205#define MAX_ENCR_KEY_LENGTH 16 4206#define MIC_KEY_LENGTH 8 4207 4208struct mwl8k_cmd_update_encryption { 4209 struct mwl8k_cmd_pkt header; 4210 4211 __le32 action; 4212 __le32 reserved; 4213 __u8 mac_addr[6]; 4214 __u8 encr_type; 4215 4216} __packed; 4217 4218struct mwl8k_cmd_set_key { 4219 struct mwl8k_cmd_pkt header; 4220 4221 __le32 action; 4222 __le32 reserved; 4223 __le16 length; 4224 __le16 key_type_id; 4225 __le32 key_info; 4226 __le32 key_id; 4227 __le16 key_len; 4228 struct { 4229 __u8 key_material[MAX_ENCR_KEY_LENGTH]; 4230 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH]; 4231 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH]; 4232 } tkip; 4233 __le16 tkip_rsc_low; 4234 __le32 tkip_rsc_high; 4235 __le16 tkip_tsc_low; 4236 __le32 tkip_tsc_high; 4237 __u8 mac_addr[6]; 4238} __packed; 4239 4240enum { 4241 MWL8K_ENCR_ENABLE, 4242 MWL8K_ENCR_SET_KEY, 4243 MWL8K_ENCR_REMOVE_KEY, 4244 MWL8K_ENCR_SET_GROUP_KEY, 4245}; 4246 4247#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0 4248#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1 4249#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4 4250#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7 4251#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8 4252 4253enum { 4254 MWL8K_ALG_WEP, 4255 MWL8K_ALG_TKIP, 4256 MWL8K_ALG_CCMP, 4257}; 4258 4259#define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004 4260#define MWL8K_KEY_FLAG_PAIRWISE 0x00000008 4261#define MWL8K_KEY_FLAG_TSC_VALID 0x00000040 4262#define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000 4263#define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000 4264 4265static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw, 4266 struct ieee80211_vif *vif, 4267 u8 *addr, 4268 u8 encr_type) 4269{ 4270 struct mwl8k_cmd_update_encryption *cmd; 4271 int rc; 4272 4273 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4274 if (cmd == NULL) 4275 return -ENOMEM; 4276 4277 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4278 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4279 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE); 4280 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4281 cmd->encr_type = encr_type; 4282 4283 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4284 kfree(cmd); 4285 4286 return rc; 4287} 4288 4289static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd, 4290 u8 *addr, 4291 struct ieee80211_key_conf *key) 4292{ 4293 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4294 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4295 cmd->length = cpu_to_le16(sizeof(*cmd) - 4296 offsetof(struct mwl8k_cmd_set_key, length)); 4297 cmd->key_id = cpu_to_le32(key->keyidx); 4298 cmd->key_len = cpu_to_le16(key->keylen); 4299 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4300 4301 switch (key->cipher) { 4302 case WLAN_CIPHER_SUITE_WEP40: 4303 case WLAN_CIPHER_SUITE_WEP104: 4304 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP); 4305 if (key->keyidx == 0) 4306 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY); 4307 4308 break; 4309 case WLAN_CIPHER_SUITE_TKIP: 4310 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP); 4311 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4312 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4313 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4314 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID 4315 | MWL8K_KEY_FLAG_TSC_VALID); 4316 break; 4317 case WLAN_CIPHER_SUITE_CCMP: 4318 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP); 4319 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4320 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4321 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4322 break; 4323 default: 4324 return -ENOTSUPP; 4325 } 4326 4327 return 0; 4328} 4329 4330static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw, 4331 struct ieee80211_vif *vif, 4332 u8 *addr, 4333 struct ieee80211_key_conf *key) 4334{ 4335 struct mwl8k_cmd_set_key *cmd; 4336 int rc; 4337 int keymlen; 4338 u32 action; 4339 u8 idx; 4340 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4341 4342 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4343 if (cmd == NULL) 4344 return -ENOMEM; 4345 4346 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4347 if (rc < 0) 4348 goto done; 4349 4350 idx = key->keyidx; 4351 4352 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4353 action = MWL8K_ENCR_SET_KEY; 4354 else 4355 action = MWL8K_ENCR_SET_GROUP_KEY; 4356 4357 switch (key->cipher) { 4358 case WLAN_CIPHER_SUITE_WEP40: 4359 case WLAN_CIPHER_SUITE_WEP104: 4360 if (!mwl8k_vif->wep_key_conf[idx].enabled) { 4361 memcpy(mwl8k_vif->wep_key_conf[idx].key, key, 4362 sizeof(*key) + key->keylen); 4363 mwl8k_vif->wep_key_conf[idx].enabled = 1; 4364 } 4365 4366 keymlen = key->keylen; 4367 action = MWL8K_ENCR_SET_KEY; 4368 break; 4369 case WLAN_CIPHER_SUITE_TKIP: 4370 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH; 4371 break; 4372 case WLAN_CIPHER_SUITE_CCMP: 4373 keymlen = key->keylen; 4374 break; 4375 default: 4376 rc = -ENOTSUPP; 4377 goto done; 4378 } 4379 4380 memcpy(&cmd->tkip, key->key, keymlen); 4381 cmd->action = cpu_to_le32(action); 4382 4383 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4384done: 4385 kfree(cmd); 4386 4387 return rc; 4388} 4389 4390static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw, 4391 struct ieee80211_vif *vif, 4392 u8 *addr, 4393 struct ieee80211_key_conf *key) 4394{ 4395 struct mwl8k_cmd_set_key *cmd; 4396 int rc; 4397 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4398 4399 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4400 if (cmd == NULL) 4401 return -ENOMEM; 4402 4403 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4404 if (rc < 0) 4405 goto done; 4406 4407 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || 4408 key->cipher == WLAN_CIPHER_SUITE_WEP104) 4409 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0; 4410 4411 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY); 4412 4413 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4414done: 4415 kfree(cmd); 4416 4417 return rc; 4418} 4419 4420static int mwl8k_set_key(struct ieee80211_hw *hw, 4421 enum set_key_cmd cmd_param, 4422 struct ieee80211_vif *vif, 4423 struct ieee80211_sta *sta, 4424 struct ieee80211_key_conf *key) 4425{ 4426 int rc = 0; 4427 u8 encr_type; 4428 u8 *addr; 4429 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4430 struct mwl8k_priv *priv = hw->priv; 4431 4432 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw) 4433 return -EOPNOTSUPP; 4434 4435 if (sta == NULL) 4436 addr = vif->addr; 4437 else 4438 addr = sta->addr; 4439 4440 if (cmd_param == SET_KEY) { 4441 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key); 4442 if (rc) 4443 goto out; 4444 4445 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40) 4446 || (key->cipher == WLAN_CIPHER_SUITE_WEP104)) 4447 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP; 4448 else 4449 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED; 4450 4451 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr, 4452 encr_type); 4453 if (rc) 4454 goto out; 4455 4456 mwl8k_vif->is_hw_crypto_enabled = true; 4457 4458 } else { 4459 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key); 4460 4461 if (rc) 4462 goto out; 4463 } 4464out: 4465 return rc; 4466} 4467 4468/* 4469 * CMD_UPDATE_STADB. 4470 */ 4471struct ewc_ht_info { 4472 __le16 control1; 4473 __le16 control2; 4474 __le16 control3; 4475} __packed; 4476 4477struct peer_capability_info { 4478 /* Peer type - AP vs. STA. */ 4479 __u8 peer_type; 4480 4481 /* Basic 802.11 capabilities from assoc resp. */ 4482 __le16 basic_caps; 4483 4484 /* Set if peer supports 802.11n high throughput (HT). */ 4485 __u8 ht_support; 4486 4487 /* Valid if HT is supported. */ 4488 __le16 ht_caps; 4489 __u8 extended_ht_caps; 4490 struct ewc_ht_info ewc_info; 4491 4492 /* Legacy rate table. Intersection of our rates and peer rates. */ 4493 __u8 legacy_rates[12]; 4494 4495 /* HT rate table. Intersection of our rates and peer rates. */ 4496 __u8 ht_rates[16]; 4497 __u8 pad[16]; 4498 4499 /* If set, interoperability mode, no proprietary extensions. */ 4500 __u8 interop; 4501 __u8 pad2; 4502 __u8 station_id; 4503 __le16 amsdu_enabled; 4504} __packed; 4505 4506struct mwl8k_cmd_update_stadb { 4507 struct mwl8k_cmd_pkt header; 4508 4509 /* See STADB_ACTION_TYPE */ 4510 __le32 action; 4511 4512 /* Peer MAC address */ 4513 __u8 peer_addr[ETH_ALEN]; 4514 4515 __le32 reserved; 4516 4517 /* Peer info - valid during add/update. */ 4518 struct peer_capability_info peer_info; 4519} __packed; 4520 4521#define MWL8K_STA_DB_MODIFY_ENTRY 1 4522#define MWL8K_STA_DB_DEL_ENTRY 2 4523 4524/* Peer Entry flags - used to define the type of the peer node */ 4525#define MWL8K_PEER_TYPE_ACCESSPOINT 2 4526 4527static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw, 4528 struct ieee80211_vif *vif, 4529 struct ieee80211_sta *sta) 4530{ 4531 struct mwl8k_cmd_update_stadb *cmd; 4532 struct peer_capability_info *p; 4533 u32 rates; 4534 int rc; 4535 4536 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4537 if (cmd == NULL) 4538 return -ENOMEM; 4539 4540 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4541 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4542 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY); 4543 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN); 4544 4545 p = &cmd->peer_info; 4546 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; 4547 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability); 4548 p->ht_support = sta->deflink.ht_cap.ht_supported; 4549 p->ht_caps = cpu_to_le16(sta->deflink.ht_cap.cap); 4550 p->extended_ht_caps = (sta->deflink.ht_cap.ampdu_factor & 3) | 4551 ((sta->deflink.ht_cap.ampdu_density & 7) << 2); 4552 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4553 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ]; 4554 else 4555 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5; 4556 legacy_rate_mask_to_array(p->legacy_rates, rates); 4557 memcpy(p->ht_rates, &sta->deflink.ht_cap.mcs, 16); 4558 p->interop = 1; 4559 p->amsdu_enabled = 0; 4560 4561 rc = mwl8k_post_cmd(hw, &cmd->header); 4562 if (!rc) 4563 rc = p->station_id; 4564 kfree(cmd); 4565 4566 return rc; 4567} 4568 4569static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw, 4570 struct ieee80211_vif *vif, u8 *addr) 4571{ 4572 struct mwl8k_cmd_update_stadb *cmd; 4573 int rc; 4574 4575 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4576 if (cmd == NULL) 4577 return -ENOMEM; 4578 4579 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4580 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4581 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY); 4582 memcpy(cmd->peer_addr, addr, ETH_ALEN); 4583 4584 rc = mwl8k_post_cmd(hw, &cmd->header); 4585 kfree(cmd); 4586 4587 return rc; 4588} 4589 4590 4591/* 4592 * Interrupt handling. 4593 */ 4594static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) 4595{ 4596 struct ieee80211_hw *hw = dev_id; 4597 struct mwl8k_priv *priv = hw->priv; 4598 u32 status; 4599 4600 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4601 if (!status) 4602 return IRQ_NONE; 4603 4604 if (status & MWL8K_A2H_INT_TX_DONE) { 4605 status &= ~MWL8K_A2H_INT_TX_DONE; 4606 tasklet_schedule(&priv->poll_tx_task); 4607 } 4608 4609 if (status & MWL8K_A2H_INT_RX_READY) { 4610 status &= ~MWL8K_A2H_INT_RX_READY; 4611 tasklet_schedule(&priv->poll_rx_task); 4612 } 4613 4614 if (status & MWL8K_A2H_INT_BA_WATCHDOG) { 4615 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG, 4616 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4617 4618 atomic_inc(&priv->watchdog_event_pending); 4619 status &= ~MWL8K_A2H_INT_BA_WATCHDOG; 4620 ieee80211_queue_work(hw, &priv->watchdog_ba_handle); 4621 } 4622 4623 if (status) 4624 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4625 4626 if (status & MWL8K_A2H_INT_OPC_DONE) { 4627 if (priv->hostcmd_wait != NULL) 4628 complete(priv->hostcmd_wait); 4629 } 4630 4631 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { 4632 if (!mutex_is_locked(&priv->fw_mutex) && 4633 priv->radio_on && priv->pending_tx_pkts) 4634 mwl8k_tx_start(priv); 4635 } 4636 4637 return IRQ_HANDLED; 4638} 4639 4640static void mwl8k_tx_poll(struct tasklet_struct *t) 4641{ 4642 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_tx_task); 4643 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev); 4644 int limit; 4645 int i; 4646 4647 limit = 32; 4648 4649 spin_lock(&priv->tx_lock); 4650 4651 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4652 limit -= mwl8k_txq_reclaim(hw, i, limit, 0); 4653 4654 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) { 4655 complete(priv->tx_wait); 4656 priv->tx_wait = NULL; 4657 } 4658 4659 spin_unlock(&priv->tx_lock); 4660 4661 if (limit) { 4662 writel(~MWL8K_A2H_INT_TX_DONE, 4663 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4664 } else { 4665 tasklet_schedule(&priv->poll_tx_task); 4666 } 4667} 4668 4669static void mwl8k_rx_poll(struct tasklet_struct *t) 4670{ 4671 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_rx_task); 4672 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev); 4673 int limit; 4674 4675 limit = 32; 4676 limit -= rxq_process(hw, 0, limit); 4677 limit -= rxq_refill(hw, 0, limit); 4678 4679 if (limit) { 4680 writel(~MWL8K_A2H_INT_RX_READY, 4681 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4682 } else { 4683 tasklet_schedule(&priv->poll_rx_task); 4684 } 4685} 4686 4687 4688/* 4689 * Core driver operations. 4690 */ 4691static void mwl8k_tx(struct ieee80211_hw *hw, 4692 struct ieee80211_tx_control *control, 4693 struct sk_buff *skb) 4694{ 4695 struct mwl8k_priv *priv = hw->priv; 4696 int index = skb_get_queue_mapping(skb); 4697 4698 if (!priv->radio_on) { 4699 wiphy_debug(hw->wiphy, 4700 "dropped TX frame since radio disabled\n"); 4701 dev_kfree_skb(skb); 4702 return; 4703 } 4704 4705 mwl8k_txq_xmit(hw, index, control->sta, skb); 4706} 4707 4708static int mwl8k_start(struct ieee80211_hw *hw) 4709{ 4710 struct mwl8k_priv *priv = hw->priv; 4711 int rc; 4712 4713 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 4714 IRQF_SHARED, MWL8K_NAME, hw); 4715 if (rc) { 4716 priv->irq = -1; 4717 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 4718 return -EIO; 4719 } 4720 priv->irq = priv->pdev->irq; 4721 4722 /* Enable TX reclaim and RX tasklets. */ 4723 tasklet_enable(&priv->poll_tx_task); 4724 tasklet_enable(&priv->poll_rx_task); 4725 4726 /* Enable interrupts */ 4727 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4728 iowrite32(MWL8K_A2H_EVENTS, 4729 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4730 4731 rc = mwl8k_fw_lock(hw); 4732 if (!rc) { 4733 rc = mwl8k_cmd_radio_enable(hw); 4734 4735 if (!priv->ap_fw) { 4736 if (!rc) 4737 rc = mwl8k_cmd_enable_sniffer(hw, 0); 4738 4739 if (!rc) 4740 rc = mwl8k_cmd_set_pre_scan(hw); 4741 4742 if (!rc) 4743 rc = mwl8k_cmd_set_post_scan(hw, 4744 "\x00\x00\x00\x00\x00\x00"); 4745 } 4746 4747 if (!rc) 4748 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0); 4749 4750 if (!rc) 4751 rc = mwl8k_cmd_set_wmm_mode(hw, 0); 4752 4753 mwl8k_fw_unlock(hw); 4754 } 4755 4756 if (rc) { 4757 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4758 free_irq(priv->pdev->irq, hw); 4759 priv->irq = -1; 4760 tasklet_disable(&priv->poll_tx_task); 4761 tasklet_disable(&priv->poll_rx_task); 4762 } else { 4763 ieee80211_wake_queues(hw); 4764 } 4765 4766 return rc; 4767} 4768 4769static void mwl8k_stop(struct ieee80211_hw *hw) 4770{ 4771 struct mwl8k_priv *priv = hw->priv; 4772 int i; 4773 4774 if (!priv->hw_restart_in_progress) 4775 mwl8k_cmd_radio_disable(hw); 4776 4777 ieee80211_stop_queues(hw); 4778 4779 /* Disable interrupts */ 4780 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4781 if (priv->irq != -1) { 4782 free_irq(priv->pdev->irq, hw); 4783 priv->irq = -1; 4784 } 4785 4786 /* Stop finalize join worker */ 4787 cancel_work_sync(&priv->finalize_join_worker); 4788 cancel_work_sync(&priv->watchdog_ba_handle); 4789 if (priv->beacon_skb != NULL) 4790 dev_kfree_skb(priv->beacon_skb); 4791 4792 /* Stop TX reclaim and RX tasklets. */ 4793 tasklet_disable(&priv->poll_tx_task); 4794 tasklet_disable(&priv->poll_rx_task); 4795 4796 /* Return all skbs to mac80211 */ 4797 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4798 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 4799} 4800 4801static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image); 4802 4803static int mwl8k_add_interface(struct ieee80211_hw *hw, 4804 struct ieee80211_vif *vif) 4805{ 4806 struct mwl8k_priv *priv = hw->priv; 4807 struct mwl8k_vif *mwl8k_vif; 4808 u32 macids_supported; 4809 int macid, rc; 4810 struct mwl8k_device_info *di; 4811 4812 /* 4813 * Reject interface creation if sniffer mode is active, as 4814 * STA operation is mutually exclusive with hardware sniffer 4815 * mode. (Sniffer mode is only used on STA firmware.) 4816 */ 4817 if (priv->sniffer_enabled) { 4818 wiphy_info(hw->wiphy, 4819 "unable to create STA interface because sniffer mode is enabled\n"); 4820 return -EINVAL; 4821 } 4822 4823 di = priv->device_info; 4824 switch (vif->type) { 4825 case NL80211_IFTYPE_AP: 4826 if (!priv->ap_fw && di->fw_image_ap) { 4827 /* we must load the ap fw to meet this request */ 4828 if (!list_empty(&priv->vif_list)) 4829 return -EBUSY; 4830 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4831 if (rc) 4832 return rc; 4833 } 4834 macids_supported = priv->ap_macids_supported; 4835 break; 4836 case NL80211_IFTYPE_STATION: 4837 if (priv->ap_fw && di->fw_image_sta) { 4838 if (!list_empty(&priv->vif_list)) { 4839 wiphy_warn(hw->wiphy, "AP interface is running.\n" 4840 "Adding STA interface for WDS"); 4841 } else { 4842 /* we must load the sta fw to 4843 * meet this request. 4844 */ 4845 rc = mwl8k_reload_firmware(hw, 4846 di->fw_image_sta); 4847 if (rc) 4848 return rc; 4849 } 4850 } 4851 macids_supported = priv->sta_macids_supported; 4852 break; 4853 default: 4854 return -EINVAL; 4855 } 4856 4857 macid = ffs(macids_supported & ~priv->macids_used); 4858 if (!macid--) 4859 return -EBUSY; 4860 4861 /* Setup driver private area. */ 4862 mwl8k_vif = MWL8K_VIF(vif); 4863 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); 4864 mwl8k_vif->vif = vif; 4865 mwl8k_vif->macid = macid; 4866 mwl8k_vif->seqno = 0; 4867 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN); 4868 mwl8k_vif->is_hw_crypto_enabled = false; 4869 4870 /* Set the mac address. */ 4871 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr); 4872 4873 if (vif->type == NL80211_IFTYPE_AP) 4874 mwl8k_cmd_set_new_stn_add_self(hw, vif); 4875 4876 priv->macids_used |= 1 << mwl8k_vif->macid; 4877 list_add_tail(&mwl8k_vif->list, &priv->vif_list); 4878 4879 return 0; 4880} 4881 4882static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif) 4883{ 4884 /* Has ieee80211_restart_hw re-added the removed interfaces? */ 4885 if (!priv->macids_used) 4886 return; 4887 4888 priv->macids_used &= ~(1 << vif->macid); 4889 list_del(&vif->list); 4890} 4891 4892static void mwl8k_remove_interface(struct ieee80211_hw *hw, 4893 struct ieee80211_vif *vif) 4894{ 4895 struct mwl8k_priv *priv = hw->priv; 4896 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4897 4898 if (vif->type == NL80211_IFTYPE_AP) 4899 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr); 4900 4901 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr); 4902 4903 mwl8k_remove_vif(priv, mwl8k_vif); 4904} 4905 4906static void mwl8k_hw_restart_work(struct work_struct *work) 4907{ 4908 struct mwl8k_priv *priv = 4909 container_of(work, struct mwl8k_priv, fw_reload); 4910 struct ieee80211_hw *hw = priv->hw; 4911 struct mwl8k_device_info *di; 4912 int rc; 4913 4914 /* If some command is waiting for a response, clear it */ 4915 if (priv->hostcmd_wait != NULL) { 4916 complete(priv->hostcmd_wait); 4917 priv->hostcmd_wait = NULL; 4918 } 4919 4920 priv->hw_restart_owner = current; 4921 di = priv->device_info; 4922 mwl8k_fw_lock(hw); 4923 4924 if (priv->ap_fw) 4925 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4926 else 4927 rc = mwl8k_reload_firmware(hw, di->fw_image_sta); 4928 4929 if (rc) 4930 goto fail; 4931 4932 priv->hw_restart_owner = NULL; 4933 priv->hw_restart_in_progress = false; 4934 4935 /* 4936 * This unlock will wake up the queues and 4937 * also opens the command path for other 4938 * commands 4939 */ 4940 mwl8k_fw_unlock(hw); 4941 4942 ieee80211_restart_hw(hw); 4943 4944 wiphy_err(hw->wiphy, "Firmware restarted successfully\n"); 4945 4946 return; 4947fail: 4948 mwl8k_fw_unlock(hw); 4949 4950 wiphy_err(hw->wiphy, "Firmware restart failed\n"); 4951} 4952 4953static int mwl8k_config(struct ieee80211_hw *hw, u32 changed) 4954{ 4955 struct ieee80211_conf *conf = &hw->conf; 4956 struct mwl8k_priv *priv = hw->priv; 4957 int rc; 4958 4959 rc = mwl8k_fw_lock(hw); 4960 if (rc) 4961 return rc; 4962 4963 if (conf->flags & IEEE80211_CONF_IDLE) 4964 rc = mwl8k_cmd_radio_disable(hw); 4965 else 4966 rc = mwl8k_cmd_radio_enable(hw); 4967 if (rc) 4968 goto out; 4969 4970 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 4971 rc = mwl8k_cmd_set_rf_channel(hw, conf); 4972 if (rc) 4973 goto out; 4974 } 4975 4976 if (conf->power_level > 18) 4977 conf->power_level = 18; 4978 4979 if (priv->ap_fw) { 4980 4981 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) { 4982 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level); 4983 if (rc) 4984 goto out; 4985 } 4986 4987 4988 } else { 4989 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level); 4990 if (rc) 4991 goto out; 4992 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7); 4993 } 4994 4995out: 4996 mwl8k_fw_unlock(hw); 4997 4998 return rc; 4999} 5000 5001static void 5002mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5003 struct ieee80211_bss_conf *info, u32 changed) 5004{ 5005 struct mwl8k_priv *priv = hw->priv; 5006 u32 ap_legacy_rates = 0; 5007 u8 ap_mcs_rates[16]; 5008 int rc; 5009 5010 if (mwl8k_fw_lock(hw)) 5011 return; 5012 5013 /* 5014 * No need to capture a beacon if we're no longer associated. 5015 */ 5016 if ((changed & BSS_CHANGED_ASSOC) && !vif->cfg.assoc) 5017 priv->capture_beacon = false; 5018 5019 /* 5020 * Get the AP's legacy and MCS rates. 5021 */ 5022 if (vif->cfg.assoc) { 5023 struct ieee80211_sta *ap; 5024 5025 rcu_read_lock(); 5026 5027 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid); 5028 if (ap == NULL) { 5029 rcu_read_unlock(); 5030 goto out; 5031 } 5032 5033 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) { 5034 ap_legacy_rates = ap->deflink.supp_rates[NL80211_BAND_2GHZ]; 5035 } else { 5036 ap_legacy_rates = 5037 ap->deflink.supp_rates[NL80211_BAND_5GHZ] << 5; 5038 } 5039 memcpy(ap_mcs_rates, &ap->deflink.ht_cap.mcs, 16); 5040 5041 rcu_read_unlock(); 5042 5043 if (changed & BSS_CHANGED_ASSOC) { 5044 if (!priv->ap_fw) { 5045 rc = mwl8k_cmd_set_rate(hw, vif, 5046 ap_legacy_rates, 5047 ap_mcs_rates); 5048 if (rc) 5049 goto out; 5050 5051 rc = mwl8k_cmd_use_fixed_rate_sta(hw); 5052 if (rc) 5053 goto out; 5054 } else { 5055 int idx; 5056 int rate; 5057 5058 /* Use AP firmware specific rate command. 5059 */ 5060 idx = ffs(vif->bss_conf.basic_rates); 5061 if (idx) 5062 idx--; 5063 5064 if (hw->conf.chandef.chan->band == 5065 NL80211_BAND_2GHZ) 5066 rate = mwl8k_rates_24[idx].hw_value; 5067 else 5068 rate = mwl8k_rates_50[idx].hw_value; 5069 5070 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5071 } 5072 } 5073 } 5074 5075 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5076 rc = mwl8k_set_radio_preamble(hw, 5077 vif->bss_conf.use_short_preamble); 5078 if (rc) 5079 goto out; 5080 } 5081 5082 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) { 5083 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot); 5084 if (rc) 5085 goto out; 5086 } 5087 5088 if (vif->cfg.assoc && !priv->ap_fw && 5089 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT | 5090 BSS_CHANGED_HT))) { 5091 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates); 5092 if (rc) 5093 goto out; 5094 } 5095 5096 if (vif->cfg.assoc && 5097 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) { 5098 /* 5099 * Finalize the join. Tell rx handler to process 5100 * next beacon from our BSSID. 5101 */ 5102 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN); 5103 priv->capture_beacon = true; 5104 } 5105 5106out: 5107 mwl8k_fw_unlock(hw); 5108} 5109 5110static void 5111mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5112 struct ieee80211_bss_conf *info, u32 changed) 5113{ 5114 int rc; 5115 5116 if (mwl8k_fw_lock(hw)) 5117 return; 5118 5119 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5120 rc = mwl8k_set_radio_preamble(hw, 5121 vif->bss_conf.use_short_preamble); 5122 if (rc) 5123 goto out; 5124 } 5125 5126 if (changed & BSS_CHANGED_BASIC_RATES) { 5127 int idx; 5128 int rate; 5129 5130 /* 5131 * Use lowest supported basic rate for multicasts 5132 * and management frames (such as probe responses -- 5133 * beacons will always go out at 1 Mb/s). 5134 */ 5135 idx = ffs(vif->bss_conf.basic_rates); 5136 if (idx) 5137 idx--; 5138 5139 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 5140 rate = mwl8k_rates_24[idx].hw_value; 5141 else 5142 rate = mwl8k_rates_50[idx].hw_value; 5143 5144 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5145 } 5146 5147 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) { 5148 struct sk_buff *skb; 5149 5150 skb = ieee80211_beacon_get(hw, vif, 0); 5151 if (skb != NULL) { 5152 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len); 5153 kfree_skb(skb); 5154 } 5155 } 5156 5157 if (changed & BSS_CHANGED_BEACON_ENABLED) 5158 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon); 5159 5160out: 5161 mwl8k_fw_unlock(hw); 5162} 5163 5164static void 5165mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5166 struct ieee80211_bss_conf *info, u64 changed) 5167{ 5168 if (vif->type == NL80211_IFTYPE_STATION) 5169 mwl8k_bss_info_changed_sta(hw, vif, info, changed); 5170 if (vif->type == NL80211_IFTYPE_AP) 5171 mwl8k_bss_info_changed_ap(hw, vif, info, changed); 5172} 5173 5174static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw, 5175 struct netdev_hw_addr_list *mc_list) 5176{ 5177 struct mwl8k_cmd_pkt *cmd; 5178 5179 /* 5180 * Synthesize and return a command packet that programs the 5181 * hardware multicast address filter. At this point we don't 5182 * know whether FIF_ALLMULTI is being requested, but if it is, 5183 * we'll end up throwing this packet away and creating a new 5184 * one in mwl8k_configure_filter(). 5185 */ 5186 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list); 5187 5188 return (unsigned long)cmd; 5189} 5190 5191static int 5192mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw, 5193 unsigned int changed_flags, 5194 unsigned int *total_flags) 5195{ 5196 struct mwl8k_priv *priv = hw->priv; 5197 5198 /* 5199 * Hardware sniffer mode is mutually exclusive with STA 5200 * operation, so refuse to enable sniffer mode if a STA 5201 * interface is active. 5202 */ 5203 if (!list_empty(&priv->vif_list)) { 5204 if (net_ratelimit()) 5205 wiphy_info(hw->wiphy, 5206 "not enabling sniffer mode because STA interface is active\n"); 5207 return 0; 5208 } 5209 5210 if (!priv->sniffer_enabled) { 5211 if (mwl8k_cmd_enable_sniffer(hw, 1)) 5212 return 0; 5213 priv->sniffer_enabled = true; 5214 } 5215 5216 *total_flags &= FIF_ALLMULTI | 5217 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL | 5218 FIF_OTHER_BSS; 5219 5220 return 1; 5221} 5222 5223static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv) 5224{ 5225 if (!list_empty(&priv->vif_list)) 5226 return list_entry(priv->vif_list.next, struct mwl8k_vif, list); 5227 5228 return NULL; 5229} 5230 5231static void mwl8k_configure_filter(struct ieee80211_hw *hw, 5232 unsigned int changed_flags, 5233 unsigned int *total_flags, 5234 u64 multicast) 5235{ 5236 struct mwl8k_priv *priv = hw->priv; 5237 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast; 5238 5239 /* 5240 * AP firmware doesn't allow fine-grained control over 5241 * the receive filter. 5242 */ 5243 if (priv->ap_fw) { 5244 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5245 kfree(cmd); 5246 return; 5247 } 5248 5249 /* 5250 * Enable hardware sniffer mode if FIF_CONTROL or 5251 * FIF_OTHER_BSS is requested. 5252 */ 5253 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) && 5254 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) { 5255 kfree(cmd); 5256 return; 5257 } 5258 5259 /* Clear unsupported feature flags */ 5260 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5261 5262 if (mwl8k_fw_lock(hw)) { 5263 kfree(cmd); 5264 return; 5265 } 5266 5267 if (priv->sniffer_enabled) { 5268 mwl8k_cmd_enable_sniffer(hw, 0); 5269 priv->sniffer_enabled = false; 5270 } 5271 5272 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { 5273 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) { 5274 /* 5275 * Disable the BSS filter. 5276 */ 5277 mwl8k_cmd_set_pre_scan(hw); 5278 } else { 5279 struct mwl8k_vif *mwl8k_vif; 5280 const u8 *bssid; 5281 5282 /* 5283 * Enable the BSS filter. 5284 * 5285 * If there is an active STA interface, use that 5286 * interface's BSSID, otherwise use a dummy one 5287 * (where the OUI part needs to be nonzero for 5288 * the BSSID to be accepted by POST_SCAN). 5289 */ 5290 mwl8k_vif = mwl8k_first_vif(priv); 5291 if (mwl8k_vif != NULL) 5292 bssid = mwl8k_vif->vif->bss_conf.bssid; 5293 else 5294 bssid = "\x01\x00\x00\x00\x00\x00"; 5295 5296 mwl8k_cmd_set_post_scan(hw, bssid); 5297 } 5298 } 5299 5300 /* 5301 * If FIF_ALLMULTI is being requested, throw away the command 5302 * packet that ->prepare_multicast() built and replace it with 5303 * a command packet that enables reception of all multicast 5304 * packets. 5305 */ 5306 if (*total_flags & FIF_ALLMULTI) { 5307 kfree(cmd); 5308 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL); 5309 } 5310 5311 if (cmd != NULL) { 5312 mwl8k_post_cmd(hw, cmd); 5313 kfree(cmd); 5314 } 5315 5316 mwl8k_fw_unlock(hw); 5317} 5318 5319static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 5320{ 5321 return mwl8k_cmd_set_rts_threshold(hw, value); 5322} 5323 5324static int mwl8k_sta_remove(struct ieee80211_hw *hw, 5325 struct ieee80211_vif *vif, 5326 struct ieee80211_sta *sta) 5327{ 5328 struct mwl8k_priv *priv = hw->priv; 5329 5330 if (priv->ap_fw) 5331 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr); 5332 else 5333 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr); 5334} 5335 5336static int mwl8k_sta_add(struct ieee80211_hw *hw, 5337 struct ieee80211_vif *vif, 5338 struct ieee80211_sta *sta) 5339{ 5340 struct mwl8k_priv *priv = hw->priv; 5341 int ret; 5342 int i; 5343 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 5344 struct ieee80211_key_conf *key; 5345 5346 if (!priv->ap_fw) { 5347 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta); 5348 if (ret >= 0) { 5349 MWL8K_STA(sta)->peer_id = ret; 5350 if (sta->deflink.ht_cap.ht_supported) 5351 MWL8K_STA(sta)->is_ampdu_allowed = true; 5352 ret = 0; 5353 } 5354 5355 } else { 5356 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta); 5357 } 5358 5359 for (i = 0; i < NUM_WEP_KEYS; i++) { 5360 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key); 5361 if (mwl8k_vif->wep_key_conf[i].enabled) 5362 mwl8k_set_key(hw, SET_KEY, vif, sta, key); 5363 } 5364 return ret; 5365} 5366 5367static int mwl8k_conf_tx(struct ieee80211_hw *hw, 5368 struct ieee80211_vif *vif, 5369 unsigned int link_id, u16 queue, 5370 const struct ieee80211_tx_queue_params *params) 5371{ 5372 struct mwl8k_priv *priv = hw->priv; 5373 int rc; 5374 5375 rc = mwl8k_fw_lock(hw); 5376 if (!rc) { 5377 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1); 5378 memcpy(&priv->wmm_params[queue], params, sizeof(*params)); 5379 5380 if (!priv->wmm_enabled) 5381 rc = mwl8k_cmd_set_wmm_mode(hw, 1); 5382 5383 if (!rc) { 5384 int q = MWL8K_TX_WMM_QUEUES - 1 - queue; 5385 rc = mwl8k_cmd_set_edca_params(hw, q, 5386 params->cw_min, 5387 params->cw_max, 5388 params->aifs, 5389 params->txop); 5390 } 5391 5392 mwl8k_fw_unlock(hw); 5393 } 5394 5395 return rc; 5396} 5397 5398static int mwl8k_get_stats(struct ieee80211_hw *hw, 5399 struct ieee80211_low_level_stats *stats) 5400{ 5401 return mwl8k_cmd_get_stat(hw, stats); 5402} 5403 5404static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx, 5405 struct survey_info *survey) 5406{ 5407 struct mwl8k_priv *priv = hw->priv; 5408 struct ieee80211_conf *conf = &hw->conf; 5409 struct ieee80211_supported_band *sband; 5410 5411 if (priv->ap_fw) { 5412 sband = hw->wiphy->bands[NL80211_BAND_2GHZ]; 5413 5414 if (sband && idx >= sband->n_channels) { 5415 idx -= sband->n_channels; 5416 sband = NULL; 5417 } 5418 5419 if (!sband) 5420 sband = hw->wiphy->bands[NL80211_BAND_5GHZ]; 5421 5422 if (!sband || idx >= sband->n_channels) 5423 return -ENOENT; 5424 5425 memcpy(survey, &priv->survey[idx], sizeof(*survey)); 5426 survey->channel = &sband->channels[idx]; 5427 5428 return 0; 5429 } 5430 5431 if (idx != 0) 5432 return -ENOENT; 5433 5434 survey->channel = conf->chandef.chan; 5435 survey->filled = SURVEY_INFO_NOISE_DBM; 5436 survey->noise = priv->noise; 5437 5438 return 0; 5439} 5440 5441#define MAX_AMPDU_ATTEMPTS 5 5442 5443static int 5444mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5445 struct ieee80211_ampdu_params *params) 5446{ 5447 struct ieee80211_sta *sta = params->sta; 5448 enum ieee80211_ampdu_mlme_action action = params->action; 5449 u16 tid = params->tid; 5450 u16 *ssn = ¶ms->ssn; 5451 u8 buf_size = params->buf_size; 5452 int i, rc = 0; 5453 struct mwl8k_priv *priv = hw->priv; 5454 struct mwl8k_ampdu_stream *stream; 5455 u8 *addr = sta->addr, idx; 5456 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 5457 5458 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION)) 5459 return -ENOTSUPP; 5460 5461 spin_lock(&priv->stream_lock); 5462 stream = mwl8k_lookup_stream(hw, addr, tid); 5463 5464 switch (action) { 5465 case IEEE80211_AMPDU_RX_START: 5466 case IEEE80211_AMPDU_RX_STOP: 5467 break; 5468 case IEEE80211_AMPDU_TX_START: 5469 /* By the time we get here the hw queues may contain outgoing 5470 * packets for this RA/TID that are not part of this BA 5471 * session. The hw will assign sequence numbers to these 5472 * packets as they go out. So if we query the hw for its next 5473 * sequence number and use that for the SSN here, it may end up 5474 * being wrong, which will lead to sequence number mismatch at 5475 * the recipient. To avoid this, we reset the sequence number 5476 * to O for the first MPDU in this BA stream. 5477 */ 5478 *ssn = 0; 5479 if (stream == NULL) { 5480 /* This means that somebody outside this driver called 5481 * ieee80211_start_tx_ba_session. This is unexpected 5482 * because we do our own rate control. Just warn and 5483 * move on. 5484 */ 5485 wiphy_warn(hw->wiphy, "Unexpected call to %s. " 5486 "Proceeding anyway.\n", __func__); 5487 stream = mwl8k_add_stream(hw, sta, tid); 5488 } 5489 if (stream == NULL) { 5490 wiphy_debug(hw->wiphy, "no free AMPDU streams\n"); 5491 rc = -EBUSY; 5492 break; 5493 } 5494 stream->state = AMPDU_STREAM_IN_PROGRESS; 5495 5496 /* Release the lock before we do the time consuming stuff */ 5497 spin_unlock(&priv->stream_lock); 5498 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) { 5499 5500 /* Check if link is still valid */ 5501 if (!sta_info->is_ampdu_allowed) { 5502 spin_lock(&priv->stream_lock); 5503 mwl8k_remove_stream(hw, stream); 5504 spin_unlock(&priv->stream_lock); 5505 return -EBUSY; 5506 } 5507 5508 rc = mwl8k_check_ba(hw, stream, vif); 5509 5510 /* If HW restart is in progress mwl8k_post_cmd will 5511 * return -EBUSY. Avoid retrying mwl8k_check_ba in 5512 * such cases 5513 */ 5514 if (!rc || rc == -EBUSY) 5515 break; 5516 /* 5517 * HW queues take time to be flushed, give them 5518 * sufficient time 5519 */ 5520 5521 msleep(1000); 5522 } 5523 spin_lock(&priv->stream_lock); 5524 if (rc) { 5525 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d" 5526 " attempts\n", tid, MAX_AMPDU_ATTEMPTS); 5527 mwl8k_remove_stream(hw, stream); 5528 rc = -EBUSY; 5529 break; 5530 } 5531 rc = IEEE80211_AMPDU_TX_START_IMMEDIATE; 5532 break; 5533 case IEEE80211_AMPDU_TX_STOP_CONT: 5534 case IEEE80211_AMPDU_TX_STOP_FLUSH: 5535 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 5536 if (stream) { 5537 if (stream->state == AMPDU_STREAM_ACTIVE) { 5538 idx = stream->idx; 5539 spin_unlock(&priv->stream_lock); 5540 mwl8k_destroy_ba(hw, idx); 5541 spin_lock(&priv->stream_lock); 5542 } 5543 mwl8k_remove_stream(hw, stream); 5544 } 5545 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); 5546 break; 5547 case IEEE80211_AMPDU_TX_OPERATIONAL: 5548 BUG_ON(stream == NULL); 5549 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS); 5550 spin_unlock(&priv->stream_lock); 5551 rc = mwl8k_create_ba(hw, stream, buf_size, vif); 5552 spin_lock(&priv->stream_lock); 5553 if (!rc) 5554 stream->state = AMPDU_STREAM_ACTIVE; 5555 else { 5556 idx = stream->idx; 5557 spin_unlock(&priv->stream_lock); 5558 mwl8k_destroy_ba(hw, idx); 5559 spin_lock(&priv->stream_lock); 5560 wiphy_debug(hw->wiphy, 5561 "Failed adding stream for sta %pM tid %d\n", 5562 addr, tid); 5563 mwl8k_remove_stream(hw, stream); 5564 } 5565 break; 5566 5567 default: 5568 rc = -ENOTSUPP; 5569 } 5570 5571 spin_unlock(&priv->stream_lock); 5572 return rc; 5573} 5574 5575static void mwl8k_sw_scan_start(struct ieee80211_hw *hw, 5576 struct ieee80211_vif *vif, 5577 const u8 *mac_addr) 5578{ 5579 struct mwl8k_priv *priv = hw->priv; 5580 u8 tmp; 5581 5582 if (!priv->ap_fw) 5583 return; 5584 5585 /* clear all stats */ 5586 priv->channel_time = 0; 5587 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5588 ioread32(priv->regs + NOK_CCA_CNT_REG); 5589 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5590 5591 priv->sw_scan_start = true; 5592} 5593 5594static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw, 5595 struct ieee80211_vif *vif) 5596{ 5597 struct mwl8k_priv *priv = hw->priv; 5598 u8 tmp; 5599 5600 if (!priv->ap_fw) 5601 return; 5602 5603 priv->sw_scan_start = false; 5604 5605 /* clear all stats */ 5606 priv->channel_time = 0; 5607 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5608 ioread32(priv->regs + NOK_CCA_CNT_REG); 5609 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5610} 5611 5612static const struct ieee80211_ops mwl8k_ops = { 5613 .add_chanctx = ieee80211_emulate_add_chanctx, 5614 .remove_chanctx = ieee80211_emulate_remove_chanctx, 5615 .change_chanctx = ieee80211_emulate_change_chanctx, 5616 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, 5617 .tx = mwl8k_tx, 5618 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 5619 .start = mwl8k_start, 5620 .stop = mwl8k_stop, 5621 .add_interface = mwl8k_add_interface, 5622 .remove_interface = mwl8k_remove_interface, 5623 .config = mwl8k_config, 5624 .bss_info_changed = mwl8k_bss_info_changed, 5625 .prepare_multicast = mwl8k_prepare_multicast, 5626 .configure_filter = mwl8k_configure_filter, 5627 .set_key = mwl8k_set_key, 5628 .set_rts_threshold = mwl8k_set_rts_threshold, 5629 .sta_add = mwl8k_sta_add, 5630 .sta_remove = mwl8k_sta_remove, 5631 .conf_tx = mwl8k_conf_tx, 5632 .get_stats = mwl8k_get_stats, 5633 .get_survey = mwl8k_get_survey, 5634 .ampdu_action = mwl8k_ampdu_action, 5635 .sw_scan_start = mwl8k_sw_scan_start, 5636 .sw_scan_complete = mwl8k_sw_scan_complete, 5637}; 5638 5639static void mwl8k_finalize_join_worker(struct work_struct *work) 5640{ 5641 struct mwl8k_priv *priv = 5642 container_of(work, struct mwl8k_priv, finalize_join_worker); 5643 struct sk_buff *skb = priv->beacon_skb; 5644 struct ieee80211_mgmt *mgmt = (void *)skb->data; 5645 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable); 5646 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM, 5647 mgmt->u.beacon.variable, len); 5648 int dtim_period = 1; 5649 5650 if (tim && tim[1] >= 2) 5651 dtim_period = tim[3]; 5652 5653 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period); 5654 5655 dev_kfree_skb(skb); 5656 priv->beacon_skb = NULL; 5657} 5658 5659enum { 5660 MWL8363 = 0, 5661 MWL8687, 5662 MWL8366, 5663 MWL8764, 5664}; 5665 5666#define MWL8K_8366_AP_FW_API 3 5667#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw" 5668#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api) 5669 5670#define MWL8K_8764_AP_FW_API 1 5671#define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw" 5672#define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api) 5673 5674static struct mwl8k_device_info mwl8k_info_tbl[] = { 5675 [MWL8363] = { 5676 .part_name = "88w8363", 5677 .helper_image = "mwl8k/helper_8363.fw", 5678 .fw_image_sta = "mwl8k/fmimage_8363.fw", 5679 }, 5680 [MWL8687] = { 5681 .part_name = "88w8687", 5682 .helper_image = "mwl8k/helper_8687.fw", 5683 .fw_image_sta = "mwl8k/fmimage_8687.fw", 5684 }, 5685 [MWL8366] = { 5686 .part_name = "88w8366", 5687 .helper_image = "mwl8k/helper_8366.fw", 5688 .fw_image_sta = "mwl8k/fmimage_8366.fw", 5689 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API), 5690 .fw_api_ap = MWL8K_8366_AP_FW_API, 5691 .ap_rxd_ops = &rxd_ap_ops, 5692 }, 5693 [MWL8764] = { 5694 .part_name = "88w8764", 5695 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API), 5696 .fw_api_ap = MWL8K_8764_AP_FW_API, 5697 .ap_rxd_ops = &rxd_ap_ops, 5698 }, 5699}; 5700 5701MODULE_FIRMWARE("mwl8k/helper_8363.fw"); 5702MODULE_FIRMWARE("mwl8k/fmimage_8363.fw"); 5703MODULE_FIRMWARE("mwl8k/helper_8687.fw"); 5704MODULE_FIRMWARE("mwl8k/fmimage_8687.fw"); 5705MODULE_FIRMWARE("mwl8k/helper_8366.fw"); 5706MODULE_FIRMWARE("mwl8k/fmimage_8366.fw"); 5707MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API)); 5708 5709static const struct pci_device_id mwl8k_pci_id_table[] = { 5710 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, }, 5711 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, }, 5712 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, }, 5713 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, }, 5714 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, }, 5715 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, }, 5716 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, }, 5717 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, }, 5718 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, }, 5719 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, }, 5720 { }, 5721}; 5722MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table); 5723 5724static int mwl8k_request_alt_fw(struct mwl8k_priv *priv) 5725{ 5726 int rc; 5727 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n" 5728 "Trying alternative firmware %s\n", pci_name(priv->pdev), 5729 priv->fw_pref, priv->fw_alt); 5730 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true); 5731 if (rc) { 5732 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5733 pci_name(priv->pdev), priv->fw_alt); 5734 return rc; 5735 } 5736 return 0; 5737} 5738 5739static int mwl8k_firmware_load_success(struct mwl8k_priv *priv); 5740static void mwl8k_fw_state_machine(const struct firmware *fw, void *context) 5741{ 5742 struct mwl8k_priv *priv = context; 5743 struct mwl8k_device_info *di = priv->device_info; 5744 int rc; 5745 5746 switch (priv->fw_state) { 5747 case FW_STATE_INIT: 5748 if (!fw) { 5749 printk(KERN_ERR "%s: Error requesting helper fw %s\n", 5750 pci_name(priv->pdev), di->helper_image); 5751 goto fail; 5752 } 5753 priv->fw_helper = fw; 5754 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode, 5755 true); 5756 if (rc && priv->fw_alt) { 5757 rc = mwl8k_request_alt_fw(priv); 5758 if (rc) 5759 goto fail; 5760 priv->fw_state = FW_STATE_LOADING_ALT; 5761 } else if (rc) 5762 goto fail; 5763 else 5764 priv->fw_state = FW_STATE_LOADING_PREF; 5765 break; 5766 5767 case FW_STATE_LOADING_PREF: 5768 if (!fw) { 5769 if (priv->fw_alt) { 5770 rc = mwl8k_request_alt_fw(priv); 5771 if (rc) 5772 goto fail; 5773 priv->fw_state = FW_STATE_LOADING_ALT; 5774 } else 5775 goto fail; 5776 } else { 5777 priv->fw_ucode = fw; 5778 rc = mwl8k_firmware_load_success(priv); 5779 if (rc) 5780 goto fail; 5781 else 5782 complete(&priv->firmware_loading_complete); 5783 } 5784 break; 5785 5786 case FW_STATE_LOADING_ALT: 5787 if (!fw) { 5788 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5789 pci_name(priv->pdev), di->helper_image); 5790 goto fail; 5791 } 5792 priv->fw_ucode = fw; 5793 rc = mwl8k_firmware_load_success(priv); 5794 if (rc) 5795 goto fail; 5796 else 5797 complete(&priv->firmware_loading_complete); 5798 break; 5799 5800 default: 5801 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n", 5802 MWL8K_NAME, priv->fw_state); 5803 BUG_ON(1); 5804 } 5805 5806 return; 5807 5808fail: 5809 priv->fw_state = FW_STATE_ERROR; 5810 complete(&priv->firmware_loading_complete); 5811 mwl8k_release_firmware(priv); 5812 device_release_driver(&priv->pdev->dev); 5813} 5814 5815#define MAX_RESTART_ATTEMPTS 1 5816static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image, 5817 bool nowait) 5818{ 5819 struct mwl8k_priv *priv = hw->priv; 5820 int rc; 5821 int count = MAX_RESTART_ATTEMPTS; 5822 5823retry: 5824 /* Reset firmware and hardware */ 5825 mwl8k_hw_reset(priv); 5826 5827 /* Ask userland hotplug daemon for the device firmware */ 5828 rc = mwl8k_request_firmware(priv, fw_image, nowait); 5829 if (rc) { 5830 wiphy_err(hw->wiphy, "Firmware files not found\n"); 5831 return rc; 5832 } 5833 5834 if (nowait) 5835 return rc; 5836 5837 /* Load firmware into hardware */ 5838 rc = mwl8k_load_firmware(hw); 5839 if (rc) 5840 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 5841 5842 /* Reclaim memory once firmware is successfully loaded */ 5843 mwl8k_release_firmware(priv); 5844 5845 if (rc && count) { 5846 /* FW did not start successfully; 5847 * lets try one more time 5848 */ 5849 count--; 5850 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n"); 5851 msleep(20); 5852 goto retry; 5853 } 5854 5855 return rc; 5856} 5857 5858static int mwl8k_init_txqs(struct ieee80211_hw *hw) 5859{ 5860 struct mwl8k_priv *priv = hw->priv; 5861 int rc = 0; 5862 int i; 5863 5864 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 5865 rc = mwl8k_txq_init(hw, i); 5866 if (rc) 5867 break; 5868 if (priv->ap_fw) 5869 iowrite32(priv->txq[i].txd_dma, 5870 priv->sram + priv->txq_offset[i]); 5871 } 5872 return rc; 5873} 5874 5875/* initialize hw after successfully loading a firmware image */ 5876static int mwl8k_probe_hw(struct ieee80211_hw *hw) 5877{ 5878 struct mwl8k_priv *priv = hw->priv; 5879 int rc = 0; 5880 int i; 5881 5882 if (priv->ap_fw) { 5883 priv->rxd_ops = priv->device_info->ap_rxd_ops; 5884 if (priv->rxd_ops == NULL) { 5885 wiphy_err(hw->wiphy, 5886 "Driver does not have AP firmware image support for this hardware\n"); 5887 rc = -ENOENT; 5888 goto err_stop_firmware; 5889 } 5890 } else { 5891 priv->rxd_ops = &rxd_sta_ops; 5892 } 5893 5894 priv->sniffer_enabled = false; 5895 priv->wmm_enabled = false; 5896 priv->pending_tx_pkts = 0; 5897 atomic_set(&priv->watchdog_event_pending, 0); 5898 5899 rc = mwl8k_rxq_init(hw, 0); 5900 if (rc) 5901 goto err_stop_firmware; 5902 rxq_refill(hw, 0, INT_MAX); 5903 5904 /* For the sta firmware, we need to know the dma addresses of tx queues 5905 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them 5906 * prior to issuing this command. But for the AP case, we learn the 5907 * total number of queues from the result CMD_GET_HW_SPEC, so for this 5908 * case we must initialize the tx queues after. 5909 */ 5910 priv->num_ampdu_queues = 0; 5911 if (!priv->ap_fw) { 5912 rc = mwl8k_init_txqs(hw); 5913 if (rc) 5914 goto err_free_queues; 5915 } 5916 5917 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 5918 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5919 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY| 5920 MWL8K_A2H_INT_BA_WATCHDOG, 5921 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); 5922 iowrite32(MWL8K_A2H_INT_OPC_DONE, 5923 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 5924 5925 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 5926 IRQF_SHARED, MWL8K_NAME, hw); 5927 if (rc) { 5928 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 5929 goto err_free_queues; 5930 } 5931 5932 /* 5933 * When hw restart is requested, 5934 * mac80211 will take care of clearing 5935 * the ampdu streams, so do not clear 5936 * the ampdu state here 5937 */ 5938 if (!priv->hw_restart_in_progress) 5939 memset(priv->ampdu, 0, sizeof(priv->ampdu)); 5940 5941 /* 5942 * Temporarily enable interrupts. Initial firmware host 5943 * commands use interrupts and avoid polling. Disable 5944 * interrupts when done. 5945 */ 5946 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5947 5948 /* Get config data, mac addrs etc */ 5949 if (priv->ap_fw) { 5950 rc = mwl8k_cmd_get_hw_spec_ap(hw); 5951 if (!rc) 5952 rc = mwl8k_init_txqs(hw); 5953 if (!rc) 5954 rc = mwl8k_cmd_set_hw_spec(hw); 5955 } else { 5956 rc = mwl8k_cmd_get_hw_spec_sta(hw); 5957 } 5958 if (rc) { 5959 wiphy_err(hw->wiphy, "Cannot initialise firmware\n"); 5960 goto err_free_irq; 5961 } 5962 5963 /* Turn radio off */ 5964 rc = mwl8k_cmd_radio_disable(hw); 5965 if (rc) { 5966 wiphy_err(hw->wiphy, "Cannot disable\n"); 5967 goto err_free_irq; 5968 } 5969 5970 /* Clear MAC address */ 5971 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00"); 5972 if (rc) { 5973 wiphy_err(hw->wiphy, "Cannot clear MAC address\n"); 5974 goto err_free_irq; 5975 } 5976 5977 /* Configure Antennas */ 5978 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3); 5979 if (rc) 5980 wiphy_warn(hw->wiphy, "failed to set # of RX antennas"); 5981 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7); 5982 if (rc) 5983 wiphy_warn(hw->wiphy, "failed to set # of TX antennas"); 5984 5985 5986 /* Disable interrupts */ 5987 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5988 free_irq(priv->pdev->irq, hw); 5989 5990 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n", 5991 priv->device_info->part_name, 5992 priv->hw_rev, hw->wiphy->perm_addr, 5993 priv->ap_fw ? "AP" : "STA", 5994 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff, 5995 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff); 5996 5997 return 0; 5998 5999err_free_irq: 6000 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 6001 free_irq(priv->pdev->irq, hw); 6002 6003err_free_queues: 6004 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6005 mwl8k_txq_deinit(hw, i); 6006 mwl8k_rxq_deinit(hw, 0); 6007 6008err_stop_firmware: 6009 mwl8k_hw_reset(priv); 6010 6011 return rc; 6012} 6013 6014/* 6015 * invoke mwl8k_reload_firmware to change the firmware image after the device 6016 * has already been registered 6017 */ 6018static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image) 6019{ 6020 int i, rc = 0; 6021 struct mwl8k_priv *priv = hw->priv; 6022 struct mwl8k_vif *vif, *tmp_vif; 6023 6024 mwl8k_stop(hw); 6025 mwl8k_rxq_deinit(hw, 0); 6026 6027 /* 6028 * All the existing interfaces are re-added by the ieee80211_reconfig; 6029 * which means driver should remove existing interfaces before calling 6030 * ieee80211_restart_hw 6031 */ 6032 if (priv->hw_restart_in_progress) 6033 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list) 6034 mwl8k_remove_vif(priv, vif); 6035 6036 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6037 mwl8k_txq_deinit(hw, i); 6038 6039 rc = mwl8k_init_firmware(hw, fw_image, false); 6040 if (rc) 6041 goto fail; 6042 6043 rc = mwl8k_probe_hw(hw); 6044 if (rc) 6045 goto fail; 6046 6047 if (priv->hw_restart_in_progress) 6048 return rc; 6049 6050 rc = mwl8k_start(hw); 6051 if (rc) 6052 goto fail; 6053 6054 rc = mwl8k_config(hw, ~0); 6055 if (rc) 6056 goto fail; 6057 6058 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) { 6059 rc = mwl8k_conf_tx(hw, NULL, 0, i, &priv->wmm_params[i]); 6060 if (rc) 6061 goto fail; 6062 } 6063 6064 return rc; 6065 6066fail: 6067 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n"); 6068 return rc; 6069} 6070 6071static const struct ieee80211_iface_limit ap_if_limits[] = { 6072 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) }, 6073 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) }, 6074}; 6075 6076static const struct ieee80211_iface_combination ap_if_comb = { 6077 .limits = ap_if_limits, 6078 .n_limits = ARRAY_SIZE(ap_if_limits), 6079 .max_interfaces = 8, 6080 .num_different_channels = 1, 6081}; 6082 6083 6084static int mwl8k_firmware_load_success(struct mwl8k_priv *priv) 6085{ 6086 struct ieee80211_hw *hw = priv->hw; 6087 int i, rc; 6088 6089 rc = mwl8k_load_firmware(hw); 6090 mwl8k_release_firmware(priv); 6091 if (rc) { 6092 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 6093 return rc; 6094 } 6095 6096 /* 6097 * Extra headroom is the size of the required DMA header 6098 * minus the size of the smallest 802.11 frame (CTS frame). 6099 */ 6100 hw->extra_tx_headroom = 6101 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); 6102 6103 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0; 6104 6105 hw->queues = MWL8K_TX_WMM_QUEUES; 6106 6107 /* Set rssi values to dBm */ 6108 ieee80211_hw_set(hw, SIGNAL_DBM); 6109 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 6110 6111 /* 6112 * Ask mac80211 to not to trigger PS mode 6113 * based on PM bit of incoming frames. 6114 */ 6115 if (priv->ap_fw) 6116 ieee80211_hw_set(hw, AP_LINK_PS); 6117 6118 hw->vif_data_size = sizeof(struct mwl8k_vif); 6119 hw->sta_data_size = sizeof(struct mwl8k_sta); 6120 6121 priv->macids_used = 0; 6122 INIT_LIST_HEAD(&priv->vif_list); 6123 6124 /* Set default radio state and preamble */ 6125 priv->radio_on = false; 6126 priv->radio_short_preamble = false; 6127 6128 /* Finalize join worker */ 6129 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); 6130 /* Handle watchdog ba events */ 6131 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events); 6132 /* To reload the firmware if it crashes */ 6133 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work); 6134 6135 /* TX reclaim and RX tasklets. */ 6136 tasklet_setup(&priv->poll_tx_task, mwl8k_tx_poll); 6137 tasklet_disable(&priv->poll_tx_task); 6138 tasklet_setup(&priv->poll_rx_task, mwl8k_rx_poll); 6139 tasklet_disable(&priv->poll_rx_task); 6140 6141 /* Power management cookie */ 6142 priv->cookie = dma_alloc_coherent(&priv->pdev->dev, 4, 6143 &priv->cookie_dma, GFP_KERNEL); 6144 if (priv->cookie == NULL) 6145 return -ENOMEM; 6146 6147 mutex_init(&priv->fw_mutex); 6148 priv->fw_mutex_owner = NULL; 6149 priv->fw_mutex_depth = 0; 6150 priv->hostcmd_wait = NULL; 6151 6152 spin_lock_init(&priv->tx_lock); 6153 6154 spin_lock_init(&priv->stream_lock); 6155 6156 priv->tx_wait = NULL; 6157 6158 rc = mwl8k_probe_hw(hw); 6159 if (rc) 6160 goto err_free_cookie; 6161 6162 hw->wiphy->interface_modes = 0; 6163 6164 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) { 6165 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP); 6166 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6167 hw->wiphy->iface_combinations = &ap_if_comb; 6168 hw->wiphy->n_iface_combinations = 1; 6169 } 6170 6171 if (priv->sta_macids_supported || priv->device_info->fw_image_sta) 6172 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6173 6174 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 6175 6176 rc = ieee80211_register_hw(hw); 6177 if (rc) { 6178 wiphy_err(hw->wiphy, "Cannot register device\n"); 6179 goto err_unprobe_hw; 6180 } 6181 6182 return 0; 6183 6184err_unprobe_hw: 6185 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6186 mwl8k_txq_deinit(hw, i); 6187 mwl8k_rxq_deinit(hw, 0); 6188 6189err_free_cookie: 6190 if (priv->cookie != NULL) 6191 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, 6192 priv->cookie_dma); 6193 6194 return rc; 6195} 6196static int mwl8k_probe(struct pci_dev *pdev, 6197 const struct pci_device_id *id) 6198{ 6199 static int printed_version; 6200 struct ieee80211_hw *hw; 6201 struct mwl8k_priv *priv; 6202 struct mwl8k_device_info *di; 6203 int rc; 6204 6205 if (!printed_version) { 6206 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION); 6207 printed_version = 1; 6208 } 6209 6210 6211 rc = pci_enable_device(pdev); 6212 if (rc) { 6213 printk(KERN_ERR "%s: Cannot enable new PCI device\n", 6214 MWL8K_NAME); 6215 return rc; 6216 } 6217 6218 rc = pci_request_regions(pdev, MWL8K_NAME); 6219 if (rc) { 6220 printk(KERN_ERR "%s: Cannot obtain PCI resources\n", 6221 MWL8K_NAME); 6222 goto err_disable_device; 6223 } 6224 6225 pci_set_master(pdev); 6226 6227 6228 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); 6229 if (hw == NULL) { 6230 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); 6231 rc = -ENOMEM; 6232 goto err_free_reg; 6233 } 6234 6235 SET_IEEE80211_DEV(hw, &pdev->dev); 6236 pci_set_drvdata(pdev, hw); 6237 6238 priv = hw->priv; 6239 priv->hw = hw; 6240 priv->pdev = pdev; 6241 priv->device_info = &mwl8k_info_tbl[id->driver_data]; 6242 6243 if (id->driver_data == MWL8764) 6244 priv->is_8764 = true; 6245 6246 priv->sram = pci_iomap(pdev, 0, 0x10000); 6247 if (priv->sram == NULL) { 6248 wiphy_err(hw->wiphy, "Cannot map device SRAM\n"); 6249 rc = -EIO; 6250 goto err_iounmap; 6251 } 6252 6253 /* 6254 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1. 6255 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2. 6256 */ 6257 priv->regs = pci_iomap(pdev, 1, 0x10000); 6258 if (priv->regs == NULL) { 6259 priv->regs = pci_iomap(pdev, 2, 0x10000); 6260 if (priv->regs == NULL) { 6261 wiphy_err(hw->wiphy, "Cannot map device registers\n"); 6262 rc = -EIO; 6263 goto err_iounmap; 6264 } 6265 } 6266 6267 /* 6268 * Choose the initial fw image depending on user input. If a second 6269 * image is available, make it the alternative image that will be 6270 * loaded if the first one fails. 6271 */ 6272 init_completion(&priv->firmware_loading_complete); 6273 di = priv->device_info; 6274 if (ap_mode_default && di->fw_image_ap) { 6275 priv->fw_pref = di->fw_image_ap; 6276 priv->fw_alt = di->fw_image_sta; 6277 } else if (!ap_mode_default && di->fw_image_sta) { 6278 priv->fw_pref = di->fw_image_sta; 6279 priv->fw_alt = di->fw_image_ap; 6280 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) { 6281 printk(KERN_WARNING "AP fw is unavailable. Using STA fw."); 6282 priv->fw_pref = di->fw_image_sta; 6283 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) { 6284 printk(KERN_WARNING "STA fw is unavailable. Using AP fw."); 6285 priv->fw_pref = di->fw_image_ap; 6286 } 6287 rc = mwl8k_init_firmware(hw, priv->fw_pref, true); 6288 if (rc) 6289 goto err_stop_firmware; 6290 6291 priv->hw_restart_in_progress = false; 6292 6293 priv->running_bsses = 0; 6294 6295 return rc; 6296 6297err_stop_firmware: 6298 mwl8k_hw_reset(priv); 6299 6300err_iounmap: 6301 if (priv->regs != NULL) 6302 pci_iounmap(pdev, priv->regs); 6303 6304 if (priv->sram != NULL) 6305 pci_iounmap(pdev, priv->sram); 6306 6307 ieee80211_free_hw(hw); 6308 6309err_free_reg: 6310 pci_release_regions(pdev); 6311 6312err_disable_device: 6313 pci_disable_device(pdev); 6314 6315 return rc; 6316} 6317 6318static void mwl8k_remove(struct pci_dev *pdev) 6319{ 6320 struct ieee80211_hw *hw = pci_get_drvdata(pdev); 6321 struct mwl8k_priv *priv; 6322 int i; 6323 6324 if (hw == NULL) 6325 return; 6326 priv = hw->priv; 6327 6328 wait_for_completion(&priv->firmware_loading_complete); 6329 6330 if (priv->fw_state == FW_STATE_ERROR) { 6331 mwl8k_hw_reset(priv); 6332 goto unmap; 6333 } 6334 6335 ieee80211_stop_queues(hw); 6336 6337 ieee80211_unregister_hw(hw); 6338 6339 /* Remove TX reclaim and RX tasklets. */ 6340 tasklet_kill(&priv->poll_tx_task); 6341 tasklet_kill(&priv->poll_rx_task); 6342 6343 /* Stop hardware */ 6344 mwl8k_hw_reset(priv); 6345 6346 /* Return all skbs to mac80211 */ 6347 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6348 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 6349 6350 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6351 mwl8k_txq_deinit(hw, i); 6352 6353 mwl8k_rxq_deinit(hw, 0); 6354 6355 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, priv->cookie_dma); 6356 6357unmap: 6358 pci_iounmap(pdev, priv->regs); 6359 pci_iounmap(pdev, priv->sram); 6360 ieee80211_free_hw(hw); 6361 pci_release_regions(pdev); 6362 pci_disable_device(pdev); 6363} 6364 6365static struct pci_driver mwl8k_driver = { 6366 .name = MWL8K_NAME, 6367 .id_table = mwl8k_pci_id_table, 6368 .probe = mwl8k_probe, 6369 .remove = mwl8k_remove, 6370}; 6371 6372module_pci_driver(mwl8k_driver); 6373 6374MODULE_DESCRIPTION(MWL8K_DESC); 6375MODULE_VERSION(MWL8K_VERSION); 6376MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>"); 6377MODULE_LICENSE("GPL"); 6378