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mwl8k.c
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linux-6.19.14/drivers/net/wireless/marvell/mwl8k.c
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 /* New members MUST be added within the __struct_group() macro below. */ 591 __struct_group(mwl8k_cmd_pkt_hdr, hdr, __packed, 592 __le16 code; 593 __le16 length; 594 __u8 seq_num; 595 __u8 macid; 596 __le16 result; 597 ); 598 char payload[]; 599} __packed; 600static_assert(offsetof(struct mwl8k_cmd_pkt, payload) == sizeof(struct mwl8k_cmd_pkt_hdr), 601 "struct member likely outside of __struct_group()"); 602 603/* 604 * Firmware loading. 605 */ 606static int 607mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length) 608{ 609 void __iomem *regs = priv->regs; 610 dma_addr_t dma_addr; 611 int loops; 612 613 dma_addr = dma_map_single(&priv->pdev->dev, data, length, 614 DMA_TO_DEVICE); 615 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) 616 return -ENOMEM; 617 618 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 619 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 620 iowrite32(MWL8K_H2A_INT_DOORBELL, 621 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 622 iowrite32(MWL8K_H2A_INT_DUMMY, 623 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 624 625 loops = 1000; 626 do { 627 u32 int_code; 628 if (priv->is_8764) { 629 int_code = ioread32(regs + 630 MWL8K_HIU_H2A_INTERRUPT_STATUS); 631 if (int_code == 0) 632 break; 633 } else { 634 int_code = ioread32(regs + MWL8K_HIU_INT_CODE); 635 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { 636 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 637 break; 638 } 639 } 640 cond_resched(); 641 udelay(1); 642 } while (--loops); 643 644 dma_unmap_single(&priv->pdev->dev, dma_addr, length, DMA_TO_DEVICE); 645 646 return loops ? 0 : -ETIMEDOUT; 647} 648 649static int mwl8k_load_fw_image(struct mwl8k_priv *priv, 650 const u8 *data, size_t length) 651{ 652 struct mwl8k_cmd_pkt *cmd; 653 int done; 654 int rc = 0; 655 656 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); 657 if (cmd == NULL) 658 return -ENOMEM; 659 660 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); 661 cmd->seq_num = 0; 662 cmd->macid = 0; 663 cmd->result = 0; 664 665 done = 0; 666 while (length) { 667 int block_size = length > 256 ? 256 : length; 668 669 memcpy(cmd->payload, data + done, block_size); 670 cmd->length = cpu_to_le16(block_size); 671 672 rc = mwl8k_send_fw_load_cmd(priv, cmd, 673 sizeof(*cmd) + block_size); 674 if (rc) 675 break; 676 677 done += block_size; 678 length -= block_size; 679 } 680 681 if (!rc) { 682 cmd->length = 0; 683 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); 684 } 685 686 kfree(cmd); 687 688 return rc; 689} 690 691static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, 692 const u8 *data, size_t length) 693{ 694 unsigned char *buffer; 695 int may_continue, rc = 0; 696 u32 done, prev_block_size; 697 698 buffer = kmalloc(1024, GFP_KERNEL); 699 if (buffer == NULL) 700 return -ENOMEM; 701 702 done = 0; 703 prev_block_size = 0; 704 may_continue = 1000; 705 while (may_continue > 0) { 706 u32 block_size; 707 708 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); 709 if (block_size & 1) { 710 block_size &= ~1; 711 may_continue--; 712 } else { 713 done += prev_block_size; 714 length -= prev_block_size; 715 } 716 717 if (block_size > 1024 || block_size > length) { 718 rc = -EOVERFLOW; 719 break; 720 } 721 722 if (length == 0) { 723 rc = 0; 724 break; 725 } 726 727 if (block_size == 0) { 728 rc = -EPROTO; 729 may_continue--; 730 udelay(1); 731 continue; 732 } 733 734 prev_block_size = block_size; 735 memcpy(buffer, data + done, block_size); 736 737 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); 738 if (rc) 739 break; 740 } 741 742 if (!rc && length != 0) 743 rc = -EREMOTEIO; 744 745 kfree(buffer); 746 747 return rc; 748} 749 750static int mwl8k_load_firmware(struct ieee80211_hw *hw) 751{ 752 struct mwl8k_priv *priv = hw->priv; 753 const struct firmware *fw = priv->fw_ucode; 754 int rc; 755 int loops; 756 757 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) { 758 const struct firmware *helper = priv->fw_helper; 759 760 if (helper == NULL) { 761 printk(KERN_ERR "%s: helper image needed but none " 762 "given\n", pci_name(priv->pdev)); 763 return -EINVAL; 764 } 765 766 rc = mwl8k_load_fw_image(priv, helper->data, helper->size); 767 if (rc) { 768 printk(KERN_ERR "%s: unable to load firmware " 769 "helper image\n", pci_name(priv->pdev)); 770 return rc; 771 } 772 msleep(20); 773 774 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 775 } else { 776 if (priv->is_8764) 777 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 778 else 779 rc = mwl8k_load_fw_image(priv, fw->data, fw->size); 780 } 781 782 if (rc) { 783 printk(KERN_ERR "%s: unable to load firmware image\n", 784 pci_name(priv->pdev)); 785 return rc; 786 } 787 788 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); 789 790 loops = 500000; 791 do { 792 u32 ready_code; 793 794 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE); 795 if (ready_code == MWL8K_FWAP_READY) { 796 priv->ap_fw = true; 797 break; 798 } else if (ready_code == MWL8K_FWSTA_READY) { 799 priv->ap_fw = false; 800 break; 801 } 802 803 cond_resched(); 804 udelay(1); 805 } while (--loops); 806 807 return loops ? 0 : -ETIMEDOUT; 808} 809 810 811/* DMA header used by firmware and hardware. */ 812struct mwl8k_dma_data { 813 __le16 fwlen; 814 struct ieee80211_hdr wh; 815 char data[]; 816} __packed __aligned(2); 817 818/* Routines to add/remove DMA header from skb. */ 819static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos) 820{ 821 struct mwl8k_dma_data *tr; 822 int hdrlen; 823 824 tr = (struct mwl8k_dma_data *)skb->data; 825 hdrlen = ieee80211_hdrlen(tr->wh.frame_control); 826 827 if (hdrlen != sizeof(tr->wh)) { 828 if (ieee80211_is_data_qos(tr->wh.frame_control)) { 829 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2); 830 *((__le16 *)(tr->data - 2)) = qos; 831 } else { 832 memmove(tr->data - hdrlen, &tr->wh, hdrlen); 833 } 834 } 835 836 if (hdrlen != sizeof(*tr)) 837 skb_pull(skb, sizeof(*tr) - hdrlen); 838} 839 840#define REDUCED_TX_HEADROOM 8 841 842static void 843mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb, 844 int head_pad, int tail_pad) 845{ 846 struct ieee80211_hdr *wh; 847 int hdrlen; 848 int reqd_hdrlen; 849 struct mwl8k_dma_data *tr; 850 851 /* 852 * Add a firmware DMA header; the firmware requires that we 853 * present a 2-byte payload length followed by a 4-address 854 * header (without QoS field), followed (optionally) by any 855 * WEP/ExtIV header (but only filled in for CCMP). 856 */ 857 wh = (struct ieee80211_hdr *)skb->data; 858 859 hdrlen = ieee80211_hdrlen(wh->frame_control); 860 861 /* 862 * Check if skb_resize is required because of 863 * tx_headroom adjustment. 864 */ 865 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts) 866 + REDUCED_TX_HEADROOM))) { 867 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) { 868 869 wiphy_err(priv->hw->wiphy, 870 "Failed to reallocate TX buffer\n"); 871 return; 872 } 873 skb->truesize += REDUCED_TX_HEADROOM; 874 } 875 876 reqd_hdrlen = sizeof(*tr) + head_pad; 877 878 if (hdrlen != reqd_hdrlen) 879 skb_push(skb, reqd_hdrlen - hdrlen); 880 881 if (ieee80211_is_data_qos(wh->frame_control)) 882 hdrlen -= IEEE80211_QOS_CTL_LEN; 883 884 tr = (struct mwl8k_dma_data *)skb->data; 885 if (wh != &tr->wh) 886 memmove(&tr->wh, wh, hdrlen); 887 if (hdrlen != sizeof(tr->wh)) 888 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen); 889 890 /* 891 * Firmware length is the length of the fully formed "802.11 892 * payload". That is, everything except for the 802.11 header. 893 * This includes all crypto material including the MIC. 894 */ 895 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad); 896} 897 898static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv, 899 struct sk_buff *skb) 900{ 901 struct ieee80211_hdr *wh; 902 struct ieee80211_tx_info *tx_info; 903 struct ieee80211_key_conf *key_conf; 904 int data_pad; 905 int head_pad = 0; 906 907 wh = (struct ieee80211_hdr *)skb->data; 908 909 tx_info = IEEE80211_SKB_CB(skb); 910 911 key_conf = NULL; 912 if (ieee80211_is_data(wh->frame_control)) 913 key_conf = tx_info->control.hw_key; 914 915 /* 916 * Make sure the packet header is in the DMA header format (4-address 917 * without QoS), and add head & tail padding when HW crypto is enabled. 918 * 919 * We have the following trailer padding requirements: 920 * - WEP: 4 trailer bytes (ICV) 921 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV) 922 * - CCMP: 8 trailer bytes (MIC) 923 */ 924 data_pad = 0; 925 if (key_conf != NULL) { 926 head_pad = key_conf->iv_len; 927 switch (key_conf->cipher) { 928 case WLAN_CIPHER_SUITE_WEP40: 929 case WLAN_CIPHER_SUITE_WEP104: 930 data_pad = 4; 931 break; 932 case WLAN_CIPHER_SUITE_TKIP: 933 data_pad = 12; 934 break; 935 case WLAN_CIPHER_SUITE_CCMP: 936 data_pad = 8; 937 break; 938 } 939 } 940 mwl8k_add_dma_header(priv, skb, head_pad, data_pad); 941} 942 943/* 944 * Packet reception for 88w8366/88w8764 AP firmware. 945 */ 946struct mwl8k_rxd_ap { 947 __le16 pkt_len; 948 __u8 sq2; 949 __u8 rate; 950 __le32 pkt_phys_addr; 951 __le32 next_rxd_phys_addr; 952 __le16 qos_control; 953 __le16 htsig2; 954 __le32 hw_rssi_info; 955 __le32 hw_noise_floor_info; 956 __u8 noise_floor; 957 __u8 pad0[3]; 958 __u8 rssi; 959 __u8 rx_status; 960 __u8 channel; 961 __u8 rx_ctrl; 962} __packed; 963 964#define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80 965#define MWL8K_AP_RATE_INFO_40MHZ 0x40 966#define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f) 967 968#define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80 969 970/* 8366/8764 AP rx_status bits */ 971#define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80 972#define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF 973#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02 974#define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04 975#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08 976 977static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr) 978{ 979 struct mwl8k_rxd_ap *rxd = _rxd; 980 981 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 982 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST; 983} 984 985static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len) 986{ 987 struct mwl8k_rxd_ap *rxd = _rxd; 988 989 rxd->pkt_len = cpu_to_le16(len); 990 rxd->pkt_phys_addr = cpu_to_le32(addr); 991 wmb(); 992 rxd->rx_ctrl = 0; 993} 994 995static int 996mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status, 997 __le16 *qos, s8 *noise) 998{ 999 struct mwl8k_rxd_ap *rxd = _rxd; 1000 1001 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST)) 1002 return -1; 1003 rmb(); 1004 1005 memset(status, 0, sizeof(*status)); 1006 1007 status->signal = -rxd->rssi; 1008 *noise = -rxd->noise_floor; 1009 1010 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) { 1011 status->encoding = RX_ENC_HT; 1012 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ) 1013 status->bw = RATE_INFO_BW_40; 1014 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate); 1015 } else { 1016 int i; 1017 1018 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) { 1019 if (mwl8k_rates_24[i].hw_value == rxd->rate) { 1020 status->rate_idx = i; 1021 break; 1022 } 1023 } 1024 } 1025 1026 if (rxd->channel > 14) { 1027 status->band = NL80211_BAND_5GHZ; 1028 if (!(status->encoding == RX_ENC_HT) && 1029 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) 1030 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; 1031 } else { 1032 status->band = NL80211_BAND_2GHZ; 1033 } 1034 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1035 status->band); 1036 1037 *qos = rxd->qos_control; 1038 1039 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) && 1040 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) && 1041 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR)) 1042 status->flag |= RX_FLAG_MMIC_ERROR; 1043 1044 return le16_to_cpu(rxd->pkt_len); 1045} 1046 1047static struct rxd_ops rxd_ap_ops = { 1048 .rxd_size = sizeof(struct mwl8k_rxd_ap), 1049 .rxd_init = mwl8k_rxd_ap_init, 1050 .rxd_refill = mwl8k_rxd_ap_refill, 1051 .rxd_process = mwl8k_rxd_ap_process, 1052}; 1053 1054/* 1055 * Packet reception for STA firmware. 1056 */ 1057struct mwl8k_rxd_sta { 1058 __le16 pkt_len; 1059 __u8 link_quality; 1060 __u8 noise_level; 1061 __le32 pkt_phys_addr; 1062 __le32 next_rxd_phys_addr; 1063 __le16 qos_control; 1064 __le16 rate_info; 1065 __le32 pad0[4]; 1066 __u8 rssi; 1067 __u8 channel; 1068 __le16 pad1; 1069 __u8 rx_ctrl; 1070 __u8 rx_status; 1071 __u8 pad2[2]; 1072} __packed; 1073 1074#define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000 1075#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3) 1076#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f) 1077#define MWL8K_STA_RATE_INFO_40MHZ 0x0004 1078#define MWL8K_STA_RATE_INFO_SHORTGI 0x0002 1079#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001 1080 1081#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02 1082#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04 1083/* ICV=0 or MIC=1 */ 1084#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08 1085/* Key is uploaded only in failure case */ 1086#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30 1087 1088static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr) 1089{ 1090 struct mwl8k_rxd_sta *rxd = _rxd; 1091 1092 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 1093 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST; 1094} 1095 1096static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len) 1097{ 1098 struct mwl8k_rxd_sta *rxd = _rxd; 1099 1100 rxd->pkt_len = cpu_to_le16(len); 1101 rxd->pkt_phys_addr = cpu_to_le32(addr); 1102 wmb(); 1103 rxd->rx_ctrl = 0; 1104} 1105 1106static int 1107mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status, 1108 __le16 *qos, s8 *noise) 1109{ 1110 struct mwl8k_rxd_sta *rxd = _rxd; 1111 u16 rate_info; 1112 1113 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST)) 1114 return -1; 1115 rmb(); 1116 1117 rate_info = le16_to_cpu(rxd->rate_info); 1118 1119 memset(status, 0, sizeof(*status)); 1120 1121 status->signal = -rxd->rssi; 1122 *noise = -rxd->noise_level; 1123 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info); 1124 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info); 1125 1126 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE) 1127 status->enc_flags |= RX_ENC_FLAG_SHORTPRE; 1128 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ) 1129 status->bw = RATE_INFO_BW_40; 1130 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI) 1131 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 1132 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT) 1133 status->encoding = RX_ENC_HT; 1134 1135 if (rxd->channel > 14) { 1136 status->band = NL80211_BAND_5GHZ; 1137 if (!(status->encoding == RX_ENC_HT) && 1138 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) 1139 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; 1140 } else { 1141 status->band = NL80211_BAND_2GHZ; 1142 } 1143 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1144 status->band); 1145 1146 *qos = rxd->qos_control; 1147 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) && 1148 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE)) 1149 status->flag |= RX_FLAG_MMIC_ERROR; 1150 1151 return le16_to_cpu(rxd->pkt_len); 1152} 1153 1154static struct rxd_ops rxd_sta_ops = { 1155 .rxd_size = sizeof(struct mwl8k_rxd_sta), 1156 .rxd_init = mwl8k_rxd_sta_init, 1157 .rxd_refill = mwl8k_rxd_sta_refill, 1158 .rxd_process = mwl8k_rxd_sta_process, 1159}; 1160 1161 1162#define MWL8K_RX_DESCS 256 1163#define MWL8K_RX_MAXSZ 3800 1164 1165static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) 1166{ 1167 struct mwl8k_priv *priv = hw->priv; 1168 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1169 int size; 1170 int i; 1171 1172 rxq->rxd_count = 0; 1173 rxq->head = 0; 1174 rxq->tail = 0; 1175 1176 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size; 1177 1178 rxq->rxd = dma_alloc_coherent(&priv->pdev->dev, size, &rxq->rxd_dma, 1179 GFP_KERNEL); 1180 if (rxq->rxd == NULL) { 1181 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n"); 1182 return -ENOMEM; 1183 } 1184 1185 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL); 1186 if (rxq->buf == NULL) { 1187 dma_free_coherent(&priv->pdev->dev, size, rxq->rxd, 1188 rxq->rxd_dma); 1189 return -ENOMEM; 1190 } 1191 1192 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1193 int desc_size; 1194 void *rxd; 1195 int nexti; 1196 dma_addr_t next_dma_addr; 1197 1198 desc_size = priv->rxd_ops->rxd_size; 1199 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size); 1200 1201 nexti = i + 1; 1202 if (nexti == MWL8K_RX_DESCS) 1203 nexti = 0; 1204 next_dma_addr = rxq->rxd_dma + (nexti * desc_size); 1205 1206 priv->rxd_ops->rxd_init(rxd, next_dma_addr); 1207 } 1208 1209 return 0; 1210} 1211 1212static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) 1213{ 1214 struct mwl8k_priv *priv = hw->priv; 1215 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1216 int refilled = 0; 1217 1218 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) { 1219 struct sk_buff *skb; 1220 dma_addr_t addr; 1221 int rx; 1222 void *rxd; 1223 1224 skb = dev_alloc_skb(MWL8K_RX_MAXSZ); 1225 if (skb == NULL) 1226 break; 1227 1228 addr = dma_map_single(&priv->pdev->dev, skb->data, 1229 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1230 if (dma_mapping_error(&priv->pdev->dev, addr)) { 1231 kfree_skb(skb); 1232 break; 1233 } 1234 1235 rxq->rxd_count++; 1236 rx = rxq->tail++; 1237 if (rxq->tail == MWL8K_RX_DESCS) 1238 rxq->tail = 0; 1239 rxq->buf[rx].skb = skb; 1240 dma_unmap_addr_set(&rxq->buf[rx], dma, addr); 1241 1242 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size); 1243 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ); 1244 1245 refilled++; 1246 } 1247 1248 return refilled; 1249} 1250 1251/* Must be called only when the card's reception is completely halted */ 1252static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) 1253{ 1254 struct mwl8k_priv *priv = hw->priv; 1255 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1256 int i; 1257 1258 if (rxq->rxd == NULL) 1259 return; 1260 1261 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1262 if (rxq->buf[i].skb != NULL) { 1263 dma_unmap_single(&priv->pdev->dev, 1264 dma_unmap_addr(&rxq->buf[i], dma), 1265 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1266 dma_unmap_addr_set(&rxq->buf[i], dma, 0); 1267 1268 kfree_skb(rxq->buf[i].skb); 1269 rxq->buf[i].skb = NULL; 1270 } 1271 } 1272 1273 kfree(rxq->buf); 1274 rxq->buf = NULL; 1275 1276 dma_free_coherent(&priv->pdev->dev, 1277 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, rxq->rxd, 1278 rxq->rxd_dma); 1279 rxq->rxd = NULL; 1280} 1281 1282 1283/* 1284 * Scan a list of BSSIDs to process for finalize join. 1285 * Allows for extension to process multiple BSSIDs. 1286 */ 1287static inline int 1288mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) 1289{ 1290 return priv->capture_beacon && 1291 ieee80211_is_beacon(wh->frame_control) && 1292 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid); 1293} 1294 1295static inline void mwl8k_save_beacon(struct ieee80211_hw *hw, 1296 struct sk_buff *skb) 1297{ 1298 struct mwl8k_priv *priv = hw->priv; 1299 1300 priv->capture_beacon = false; 1301 eth_zero_addr(priv->capture_bssid); 1302 1303 /* 1304 * Use GFP_ATOMIC as rxq_process is called from 1305 * the primary interrupt handler, memory allocation call 1306 * must not sleep. 1307 */ 1308 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); 1309 if (priv->beacon_skb != NULL) 1310 ieee80211_queue_work(hw, &priv->finalize_join_worker); 1311} 1312 1313static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list, 1314 u8 *bssid) 1315{ 1316 struct mwl8k_vif *mwl8k_vif; 1317 1318 list_for_each_entry(mwl8k_vif, 1319 vif_list, list) { 1320 if (memcmp(bssid, mwl8k_vif->bssid, 1321 ETH_ALEN) == 0) 1322 return mwl8k_vif; 1323 } 1324 1325 return NULL; 1326} 1327 1328static int rxq_process(struct ieee80211_hw *hw, int index, int limit) 1329{ 1330 struct mwl8k_priv *priv = hw->priv; 1331 struct mwl8k_vif *mwl8k_vif = NULL; 1332 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1333 int processed; 1334 1335 processed = 0; 1336 while (rxq->rxd_count && limit--) { 1337 struct sk_buff *skb; 1338 void *rxd; 1339 int pkt_len; 1340 struct ieee80211_rx_status status; 1341 struct ieee80211_hdr *wh; 1342 __le16 qos; 1343 1344 skb = rxq->buf[rxq->head].skb; 1345 if (skb == NULL) 1346 break; 1347 1348 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size); 1349 1350 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos, 1351 &priv->noise); 1352 if (pkt_len < 0) 1353 break; 1354 1355 rxq->buf[rxq->head].skb = NULL; 1356 1357 dma_unmap_single(&priv->pdev->dev, 1358 dma_unmap_addr(&rxq->buf[rxq->head], dma), 1359 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1360 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0); 1361 1362 rxq->head++; 1363 if (rxq->head == MWL8K_RX_DESCS) 1364 rxq->head = 0; 1365 1366 rxq->rxd_count--; 1367 1368 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1369 1370 /* 1371 * Check for a pending join operation. Save a 1372 * copy of the beacon and schedule a tasklet to 1373 * send a FINALIZE_JOIN command to the firmware. 1374 */ 1375 if (mwl8k_capture_bssid(priv, (void *)skb->data)) 1376 mwl8k_save_beacon(hw, skb); 1377 1378 if (ieee80211_has_protected(wh->frame_control)) { 1379 1380 /* Check if hw crypto has been enabled for 1381 * this bss. If yes, set the status flags 1382 * accordingly 1383 */ 1384 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list, 1385 wh->addr1); 1386 1387 if (mwl8k_vif != NULL && 1388 mwl8k_vif->is_hw_crypto_enabled) { 1389 /* 1390 * When MMIC ERROR is encountered 1391 * by the firmware, payload is 1392 * dropped and only 32 bytes of 1393 * mwl8k Firmware header is sent 1394 * to the host. 1395 * 1396 * We need to add four bytes of 1397 * key information. In it 1398 * MAC80211 expects keyidx set to 1399 * 0 for triggering Counter 1400 * Measure of MMIC failure. 1401 */ 1402 if (status.flag & RX_FLAG_MMIC_ERROR) { 1403 struct mwl8k_dma_data *tr; 1404 tr = (struct mwl8k_dma_data *)skb->data; 1405 memset((void *)&(tr->data), 0, 4); 1406 pkt_len += 4; 1407 } 1408 1409 if (!ieee80211_is_auth(wh->frame_control)) 1410 status.flag |= RX_FLAG_IV_STRIPPED | 1411 RX_FLAG_DECRYPTED | 1412 RX_FLAG_MMIC_STRIPPED; 1413 } 1414 } 1415 1416 skb_put(skb, pkt_len); 1417 mwl8k_remove_dma_header(skb, qos); 1418 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); 1419 ieee80211_rx_irqsafe(hw, skb); 1420 1421 processed++; 1422 } 1423 1424 return processed; 1425} 1426 1427 1428/* 1429 * Packet transmission. 1430 */ 1431 1432#define MWL8K_TXD_STATUS_OK 0x00000001 1433#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 1434#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 1435#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 1436#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 1437 1438#define MWL8K_QOS_QLEN_UNSPEC 0xff00 1439#define MWL8K_QOS_ACK_POLICY_MASK 0x0060 1440#define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000 1441#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060 1442#define MWL8K_QOS_EOSP 0x0010 1443 1444struct mwl8k_tx_desc { 1445 __le32 status; 1446 __u8 data_rate; 1447 __u8 tx_priority; 1448 __le16 qos_control; 1449 __le32 pkt_phys_addr; 1450 __le16 pkt_len; 1451 __u8 dest_MAC_addr[ETH_ALEN]; 1452 __le32 next_txd_phys_addr; 1453 __le32 timestamp; 1454 __le16 rate_info; 1455 __u8 peer_id; 1456 __u8 tx_frag_cnt; 1457} __packed; 1458 1459#define MWL8K_TX_DESCS 128 1460 1461static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) 1462{ 1463 struct mwl8k_priv *priv = hw->priv; 1464 struct mwl8k_tx_queue *txq = priv->txq + index; 1465 int size; 1466 int i; 1467 1468 txq->len = 0; 1469 txq->head = 0; 1470 txq->tail = 0; 1471 1472 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); 1473 1474 txq->txd = dma_alloc_coherent(&priv->pdev->dev, size, &txq->txd_dma, 1475 GFP_KERNEL); 1476 if (txq->txd == NULL) { 1477 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n"); 1478 return -ENOMEM; 1479 } 1480 1481 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL); 1482 if (txq->skb == NULL) { 1483 dma_free_coherent(&priv->pdev->dev, size, txq->txd, 1484 txq->txd_dma); 1485 txq->txd = NULL; 1486 return -ENOMEM; 1487 } 1488 1489 for (i = 0; i < MWL8K_TX_DESCS; i++) { 1490 struct mwl8k_tx_desc *tx_desc; 1491 int nexti; 1492 1493 tx_desc = txq->txd + i; 1494 nexti = (i + 1) % MWL8K_TX_DESCS; 1495 1496 tx_desc->status = 0; 1497 tx_desc->next_txd_phys_addr = 1498 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc)); 1499 } 1500 1501 return 0; 1502} 1503 1504static inline void mwl8k_tx_start(struct mwl8k_priv *priv) 1505{ 1506 iowrite32(MWL8K_H2A_INT_PPA_READY, 1507 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1508 iowrite32(MWL8K_H2A_INT_DUMMY, 1509 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1510 ioread32(priv->regs + MWL8K_HIU_INT_CODE); 1511} 1512 1513static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw) 1514{ 1515 struct mwl8k_priv *priv = hw->priv; 1516 int i; 1517 1518 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 1519 struct mwl8k_tx_queue *txq = priv->txq + i; 1520 int fw_owned = 0; 1521 int drv_owned = 0; 1522 int unused = 0; 1523 int desc; 1524 1525 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { 1526 struct mwl8k_tx_desc *tx_desc = txq->txd + desc; 1527 u32 status; 1528 1529 status = le32_to_cpu(tx_desc->status); 1530 if (status & MWL8K_TXD_STATUS_FW_OWNED) 1531 fw_owned++; 1532 else 1533 drv_owned++; 1534 1535 if (tx_desc->pkt_len == 0) 1536 unused++; 1537 } 1538 1539 wiphy_err(hw->wiphy, 1540 "txq[%d] len=%d head=%d tail=%d " 1541 "fw_owned=%d drv_owned=%d unused=%d\n", 1542 i, 1543 txq->len, txq->head, txq->tail, 1544 fw_owned, drv_owned, unused); 1545 } 1546} 1547 1548/* 1549 * Must be called with priv->fw_mutex held and tx queues stopped. 1550 */ 1551#define MWL8K_TX_WAIT_TIMEOUT_MS 5000 1552 1553static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw) 1554{ 1555 struct mwl8k_priv *priv = hw->priv; 1556 DECLARE_COMPLETION_ONSTACK(tx_wait); 1557 int retry; 1558 int rc; 1559 1560 might_sleep(); 1561 1562 /* Since fw restart is in progress, allow only the firmware 1563 * commands from the restart code and block the other 1564 * commands since they are going to fail in any case since 1565 * the firmware has crashed 1566 */ 1567 if (priv->hw_restart_in_progress) { 1568 if (priv->hw_restart_owner == current) 1569 return 0; 1570 else 1571 return -EBUSY; 1572 } 1573 1574 if (atomic_read(&priv->watchdog_event_pending)) 1575 return 0; 1576 1577 /* 1578 * The TX queues are stopped at this point, so this test 1579 * doesn't need to take ->tx_lock. 1580 */ 1581 if (!priv->pending_tx_pkts) 1582 return 0; 1583 1584 retry = 1; 1585 rc = 0; 1586 1587 spin_lock_bh(&priv->tx_lock); 1588 priv->tx_wait = &tx_wait; 1589 while (!rc) { 1590 int oldcount; 1591 unsigned long timeout; 1592 1593 oldcount = priv->pending_tx_pkts; 1594 1595 spin_unlock_bh(&priv->tx_lock); 1596 timeout = wait_for_completion_timeout(&tx_wait, 1597 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS)); 1598 1599 if (atomic_read(&priv->watchdog_event_pending)) { 1600 spin_lock_bh(&priv->tx_lock); 1601 priv->tx_wait = NULL; 1602 spin_unlock_bh(&priv->tx_lock); 1603 return 0; 1604 } 1605 1606 spin_lock_bh(&priv->tx_lock); 1607 1608 if (timeout || !priv->pending_tx_pkts) { 1609 WARN_ON(priv->pending_tx_pkts); 1610 if (retry) 1611 wiphy_notice(hw->wiphy, "tx rings drained\n"); 1612 break; 1613 } 1614 1615 if (retry) { 1616 mwl8k_tx_start(priv); 1617 retry = 0; 1618 continue; 1619 } 1620 1621 if (priv->pending_tx_pkts < oldcount) { 1622 wiphy_notice(hw->wiphy, 1623 "waiting for tx rings to drain (%d -> %d pkts)\n", 1624 oldcount, priv->pending_tx_pkts); 1625 retry = 1; 1626 continue; 1627 } 1628 1629 priv->tx_wait = NULL; 1630 1631 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n", 1632 MWL8K_TX_WAIT_TIMEOUT_MS); 1633 mwl8k_dump_tx_rings(hw); 1634 priv->hw_restart_in_progress = true; 1635 ieee80211_queue_work(hw, &priv->fw_reload); 1636 1637 rc = -ETIMEDOUT; 1638 } 1639 priv->tx_wait = NULL; 1640 spin_unlock_bh(&priv->tx_lock); 1641 1642 return rc; 1643} 1644 1645#define MWL8K_TXD_SUCCESS(status) \ 1646 ((status) & (MWL8K_TXD_STATUS_OK | \ 1647 MWL8K_TXD_STATUS_OK_RETRY | \ 1648 MWL8K_TXD_STATUS_OK_MORE_RETRY)) 1649 1650static int mwl8k_tid_queue_mapping(u8 tid) 1651{ 1652 BUG_ON(tid > 7); 1653 1654 switch (tid) { 1655 case 0: 1656 case 3: 1657 return IEEE80211_AC_BE; 1658 case 1: 1659 case 2: 1660 return IEEE80211_AC_BK; 1661 case 4: 1662 case 5: 1663 return IEEE80211_AC_VI; 1664 case 6: 1665 case 7: 1666 return IEEE80211_AC_VO; 1667 default: 1668 return -1; 1669 } 1670} 1671 1672/* The firmware will fill in the rate information 1673 * for each packet that gets queued in the hardware 1674 * and these macros will interpret that info. 1675 */ 1676 1677#define RI_FORMAT(a) (a & 0x0001) 1678#define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3) 1679 1680static int 1681mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force) 1682{ 1683 struct mwl8k_priv *priv = hw->priv; 1684 struct mwl8k_tx_queue *txq = priv->txq + index; 1685 int processed; 1686 1687 processed = 0; 1688 while (txq->len > 0 && limit--) { 1689 int tx; 1690 struct mwl8k_tx_desc *tx_desc; 1691 unsigned long addr; 1692 int size; 1693 struct sk_buff *skb; 1694 struct ieee80211_tx_info *info; 1695 u32 status; 1696 struct ieee80211_sta *sta; 1697 struct mwl8k_sta *sta_info = NULL; 1698 u16 rate_info; 1699 struct ieee80211_hdr *wh; 1700 1701 tx = txq->head; 1702 tx_desc = txq->txd + tx; 1703 1704 status = le32_to_cpu(tx_desc->status); 1705 1706 if (status & MWL8K_TXD_STATUS_FW_OWNED) { 1707 if (!force) 1708 break; 1709 tx_desc->status &= 1710 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); 1711 } 1712 1713 txq->head = (tx + 1) % MWL8K_TX_DESCS; 1714 BUG_ON(txq->len == 0); 1715 txq->len--; 1716 priv->pending_tx_pkts--; 1717 1718 addr = le32_to_cpu(tx_desc->pkt_phys_addr); 1719 size = le16_to_cpu(tx_desc->pkt_len); 1720 skb = txq->skb[tx]; 1721 txq->skb[tx] = NULL; 1722 1723 BUG_ON(skb == NULL); 1724 dma_unmap_single(&priv->pdev->dev, addr, size, DMA_TO_DEVICE); 1725 1726 mwl8k_remove_dma_header(skb, tx_desc->qos_control); 1727 1728 wh = (struct ieee80211_hdr *) skb->data; 1729 1730 /* Mark descriptor as unused */ 1731 tx_desc->pkt_phys_addr = 0; 1732 tx_desc->pkt_len = 0; 1733 1734 info = IEEE80211_SKB_CB(skb); 1735 if (ieee80211_is_data(wh->frame_control)) { 1736 rcu_read_lock(); 1737 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1, 1738 wh->addr2); 1739 if (sta) { 1740 sta_info = MWL8K_STA(sta); 1741 BUG_ON(sta_info == NULL); 1742 rate_info = le16_to_cpu(tx_desc->rate_info); 1743 /* If rate is < 6.5 Mpbs for an ht station 1744 * do not form an ampdu. If the station is a 1745 * legacy station (format = 0), do not form an 1746 * ampdu 1747 */ 1748 if (RI_RATE_ID_MCS(rate_info) < 1 || 1749 RI_FORMAT(rate_info) == 0) { 1750 sta_info->is_ampdu_allowed = false; 1751 } else { 1752 sta_info->is_ampdu_allowed = true; 1753 } 1754 } 1755 rcu_read_unlock(); 1756 } 1757 1758 ieee80211_tx_info_clear_status(info); 1759 1760 /* Rate control is happening in the firmware. 1761 * Ensure no tx rate is being reported. 1762 */ 1763 info->status.rates[0].idx = -1; 1764 info->status.rates[0].count = 1; 1765 1766 if (MWL8K_TXD_SUCCESS(status)) 1767 info->flags |= IEEE80211_TX_STAT_ACK; 1768 1769 ieee80211_tx_status_irqsafe(hw, skb); 1770 1771 processed++; 1772 } 1773 1774 return processed; 1775} 1776 1777/* must be called only when the card's transmit is completely halted */ 1778static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) 1779{ 1780 struct mwl8k_priv *priv = hw->priv; 1781 struct mwl8k_tx_queue *txq = priv->txq + index; 1782 1783 if (txq->txd == NULL) 1784 return; 1785 1786 mwl8k_txq_reclaim(hw, index, INT_MAX, 1); 1787 1788 kfree(txq->skb); 1789 txq->skb = NULL; 1790 1791 dma_free_coherent(&priv->pdev->dev, 1792 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), 1793 txq->txd, txq->txd_dma); 1794 txq->txd = NULL; 1795} 1796 1797/* caller must hold priv->stream_lock when calling the stream functions */ 1798static struct mwl8k_ampdu_stream * 1799mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid) 1800{ 1801 struct mwl8k_ampdu_stream *stream; 1802 struct mwl8k_priv *priv = hw->priv; 1803 int i; 1804 1805 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1806 stream = &priv->ampdu[i]; 1807 if (stream->state == AMPDU_NO_STREAM) { 1808 stream->sta = sta; 1809 stream->state = AMPDU_STREAM_NEW; 1810 stream->tid = tid; 1811 stream->idx = i; 1812 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d", 1813 sta->addr, tid); 1814 return stream; 1815 } 1816 } 1817 return NULL; 1818} 1819 1820static int 1821mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1822{ 1823 int ret; 1824 1825 /* if the stream has already been started, don't start it again */ 1826 if (stream->state != AMPDU_STREAM_NEW) 1827 return 0; 1828 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0); 1829 if (ret) 1830 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: " 1831 "%d\n", stream->sta->addr, stream->tid, ret); 1832 else 1833 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n", 1834 stream->sta->addr, stream->tid); 1835 return ret; 1836} 1837 1838static void 1839mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1840{ 1841 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr, 1842 stream->tid); 1843 memset(stream, 0, sizeof(*stream)); 1844} 1845 1846static struct mwl8k_ampdu_stream * 1847mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid) 1848{ 1849 struct mwl8k_priv *priv = hw->priv; 1850 int i; 1851 1852 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1853 struct mwl8k_ampdu_stream *stream; 1854 stream = &priv->ampdu[i]; 1855 if (stream->state == AMPDU_NO_STREAM) 1856 continue; 1857 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) && 1858 stream->tid == tid) 1859 return stream; 1860 } 1861 return NULL; 1862} 1863 1864#define MWL8K_AMPDU_PACKET_THRESHOLD 64 1865static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid) 1866{ 1867 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1868 struct tx_traffic_info *tx_stats; 1869 1870 BUG_ON(tid >= MWL8K_MAX_TID); 1871 tx_stats = &sta_info->tx_stats[tid]; 1872 1873 return sta_info->is_ampdu_allowed && 1874 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD; 1875} 1876 1877static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid) 1878{ 1879 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1880 struct tx_traffic_info *tx_stats; 1881 1882 BUG_ON(tid >= MWL8K_MAX_TID); 1883 tx_stats = &sta_info->tx_stats[tid]; 1884 1885 if (tx_stats->start_time == 0) 1886 tx_stats->start_time = jiffies; 1887 1888 /* reset the packet count after each second elapses. If the number of 1889 * packets ever exceeds the ampdu_min_traffic threshold, we will allow 1890 * an ampdu stream to be started. 1891 */ 1892 if (time_after(jiffies, (unsigned long)tx_stats->start_time + HZ)) { 1893 tx_stats->pkts = 0; 1894 tx_stats->start_time = 0; 1895 } else 1896 tx_stats->pkts++; 1897} 1898 1899/* The hardware ampdu queues start from 5. 1900 * txpriorities for ampdu queues are 1901 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest 1902 * and queue 3 is lowest (queue 4 is reserved) 1903 */ 1904#define BA_QUEUE 5 1905 1906static void 1907mwl8k_txq_xmit(struct ieee80211_hw *hw, 1908 int index, 1909 struct ieee80211_sta *sta, 1910 struct sk_buff *skb) 1911{ 1912 struct mwl8k_priv *priv = hw->priv; 1913 struct ieee80211_tx_info *tx_info; 1914 struct mwl8k_vif *mwl8k_vif; 1915 struct ieee80211_hdr *wh; 1916 struct mwl8k_tx_queue *txq; 1917 struct mwl8k_tx_desc *tx; 1918 dma_addr_t dma; 1919 u32 txstatus; 1920 u8 txdatarate; 1921 u16 qos; 1922 int txpriority; 1923 u8 tid = 0; 1924 struct mwl8k_ampdu_stream *stream = NULL; 1925 bool start_ba_session = false; 1926 bool mgmtframe = false; 1927 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; 1928 bool eapol_frame = false; 1929 1930 wh = (struct ieee80211_hdr *)skb->data; 1931 if (ieee80211_is_data_qos(wh->frame_control)) 1932 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); 1933 else 1934 qos = 0; 1935 1936 if (skb->protocol == cpu_to_be16(ETH_P_PAE)) 1937 eapol_frame = true; 1938 1939 if (ieee80211_is_mgmt(wh->frame_control)) 1940 mgmtframe = true; 1941 1942 if (priv->ap_fw) 1943 mwl8k_encapsulate_tx_frame(priv, skb); 1944 else 1945 mwl8k_add_dma_header(priv, skb, 0, 0); 1946 1947 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1948 1949 tx_info = IEEE80211_SKB_CB(skb); 1950 mwl8k_vif = MWL8K_VIF(tx_info->control.vif); 1951 1952 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { 1953 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); 1954 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno); 1955 mwl8k_vif->seqno += 0x10; 1956 } 1957 1958 /* Setup firmware control bit fields for each frame type. */ 1959 txstatus = 0; 1960 txdatarate = 0; 1961 if (ieee80211_is_mgmt(wh->frame_control) || 1962 ieee80211_is_ctl(wh->frame_control)) { 1963 txdatarate = 0; 1964 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP; 1965 } else if (ieee80211_is_data(wh->frame_control)) { 1966 txdatarate = 1; 1967 if (is_multicast_ether_addr(wh->addr1)) 1968 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX; 1969 1970 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 1971 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) 1972 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK; 1973 else 1974 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 1975 } 1976 1977 /* Queue ADDBA request in the respective data queue. While setting up 1978 * the ampdu stream, mac80211 queues further packets for that 1979 * particular ra/tid pair. However, packets piled up in the hardware 1980 * for that ra/tid pair will still go out. ADDBA request and the 1981 * related data packets going out from different queues asynchronously 1982 * will cause a shift in the receiver window which might result in 1983 * ampdu packets getting dropped at the receiver after the stream has 1984 * been setup. 1985 */ 1986 if (unlikely(ieee80211_is_action(wh->frame_control) && 1987 mgmt->u.action.category == WLAN_CATEGORY_BACK && 1988 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ && 1989 priv->ap_fw)) { 1990 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); 1991 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; 1992 index = mwl8k_tid_queue_mapping(tid); 1993 } 1994 1995 txpriority = index; 1996 1997 if (priv->ap_fw && sta && sta->deflink.ht_cap.ht_supported && !eapol_frame && 1998 ieee80211_is_data_qos(wh->frame_control)) { 1999 tid = qos & 0xf; 2000 mwl8k_tx_count_packet(sta, tid); 2001 spin_lock(&priv->stream_lock); 2002 stream = mwl8k_lookup_stream(hw, sta->addr, tid); 2003 if (stream != NULL) { 2004 if (stream->state == AMPDU_STREAM_ACTIVE) { 2005 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK)); 2006 txpriority = (BA_QUEUE + stream->idx) % 2007 TOTAL_HW_TX_QUEUES; 2008 if (stream->idx <= 1) 2009 index = stream->idx + 2010 MWL8K_TX_WMM_QUEUES; 2011 2012 } else if (stream->state == AMPDU_STREAM_NEW) { 2013 /* We get here if the driver sends us packets 2014 * after we've initiated a stream, but before 2015 * our ampdu_action routine has been called 2016 * with IEEE80211_AMPDU_TX_START to get the SSN 2017 * for the ADDBA request. So this packet can 2018 * go out with no risk of sequence number 2019 * mismatch. No special handling is required. 2020 */ 2021 } else { 2022 /* Drop packets that would go out after the 2023 * ADDBA request was sent but before the ADDBA 2024 * response is received. If we don't do this, 2025 * the recipient would probably receive it 2026 * after the ADDBA request with SSN 0. This 2027 * will cause the recipient's BA receive window 2028 * to shift, which would cause the subsequent 2029 * packets in the BA stream to be discarded. 2030 * mac80211 queues our packets for us in this 2031 * case, so this is really just a safety check. 2032 */ 2033 wiphy_warn(hw->wiphy, 2034 "Cannot send packet while ADDBA " 2035 "dialog is underway.\n"); 2036 spin_unlock(&priv->stream_lock); 2037 dev_kfree_skb(skb); 2038 return; 2039 } 2040 } else { 2041 /* Defer calling mwl8k_start_stream so that the current 2042 * skb can go out before the ADDBA request. This 2043 * prevents sequence number mismatch at the recepient 2044 * as described above. 2045 */ 2046 if (mwl8k_ampdu_allowed(sta, tid)) { 2047 stream = mwl8k_add_stream(hw, sta, tid); 2048 if (stream != NULL) 2049 start_ba_session = true; 2050 } 2051 } 2052 spin_unlock(&priv->stream_lock); 2053 } else { 2054 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 2055 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 2056 } 2057 2058 dma = dma_map_single(&priv->pdev->dev, skb->data, skb->len, 2059 DMA_TO_DEVICE); 2060 2061 if (dma_mapping_error(&priv->pdev->dev, dma)) { 2062 wiphy_debug(hw->wiphy, 2063 "failed to dma map skb, dropping TX frame.\n"); 2064 if (start_ba_session) { 2065 spin_lock(&priv->stream_lock); 2066 mwl8k_remove_stream(hw, stream); 2067 spin_unlock(&priv->stream_lock); 2068 } 2069 dev_kfree_skb(skb); 2070 return; 2071 } 2072 2073 spin_lock_bh(&priv->tx_lock); 2074 2075 txq = priv->txq + index; 2076 2077 /* Mgmt frames that go out frequently are probe 2078 * responses. Other mgmt frames got out relatively 2079 * infrequently. Hence reserve 2 buffers so that 2080 * other mgmt frames do not get dropped due to an 2081 * already queued probe response in one of the 2082 * reserved buffers. 2083 */ 2084 2085 if (txq->len >= MWL8K_TX_DESCS - 2) { 2086 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) { 2087 if (start_ba_session) { 2088 spin_lock(&priv->stream_lock); 2089 mwl8k_remove_stream(hw, stream); 2090 spin_unlock(&priv->stream_lock); 2091 } 2092 mwl8k_tx_start(priv); 2093 spin_unlock_bh(&priv->tx_lock); 2094 dma_unmap_single(&priv->pdev->dev, dma, skb->len, 2095 DMA_TO_DEVICE); 2096 dev_kfree_skb(skb); 2097 return; 2098 } 2099 } 2100 2101 BUG_ON(txq->skb[txq->tail] != NULL); 2102 txq->skb[txq->tail] = skb; 2103 2104 tx = txq->txd + txq->tail; 2105 tx->data_rate = txdatarate; 2106 tx->tx_priority = txpriority; 2107 tx->qos_control = cpu_to_le16(qos); 2108 tx->pkt_phys_addr = cpu_to_le32(dma); 2109 tx->pkt_len = cpu_to_le16(skb->len); 2110 tx->rate_info = 0; 2111 if (!priv->ap_fw && sta != NULL) 2112 tx->peer_id = MWL8K_STA(sta)->peer_id; 2113 else 2114 tx->peer_id = 0; 2115 2116 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame) 2117 tx->timestamp = cpu_to_le32(ioread32(priv->regs + 2118 MWL8K_HW_TIMER_REGISTER)); 2119 else 2120 tx->timestamp = 0; 2121 2122 wmb(); 2123 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus); 2124 2125 txq->len++; 2126 priv->pending_tx_pkts++; 2127 2128 txq->tail++; 2129 if (txq->tail == MWL8K_TX_DESCS) 2130 txq->tail = 0; 2131 2132 mwl8k_tx_start(priv); 2133 2134 spin_unlock_bh(&priv->tx_lock); 2135 2136 /* Initiate the ampdu session here */ 2137 if (start_ba_session) { 2138 spin_lock(&priv->stream_lock); 2139 if (mwl8k_start_stream(hw, stream)) 2140 mwl8k_remove_stream(hw, stream); 2141 spin_unlock(&priv->stream_lock); 2142 } 2143} 2144 2145 2146/* 2147 * Firmware access. 2148 * 2149 * We have the following requirements for issuing firmware commands: 2150 * - Some commands require that the packet transmit path is idle when 2151 * the command is issued. (For simplicity, we'll just quiesce the 2152 * transmit path for every command.) 2153 * - There are certain sequences of commands that need to be issued to 2154 * the hardware sequentially, with no other intervening commands. 2155 * 2156 * This leads to an implementation of a "firmware lock" as a mutex that 2157 * can be taken recursively, and which is taken by both the low-level 2158 * command submission function (mwl8k_post_cmd) as well as any users of 2159 * that function that require issuing of an atomic sequence of commands, 2160 * and quiesces the transmit path whenever it's taken. 2161 */ 2162static int mwl8k_fw_lock(struct ieee80211_hw *hw) 2163{ 2164 struct mwl8k_priv *priv = hw->priv; 2165 2166 if (priv->fw_mutex_owner != current) { 2167 int rc; 2168 2169 mutex_lock(&priv->fw_mutex); 2170 ieee80211_stop_queues(hw); 2171 2172 rc = mwl8k_tx_wait_empty(hw); 2173 if (rc) { 2174 if (!priv->hw_restart_in_progress) 2175 ieee80211_wake_queues(hw); 2176 2177 mutex_unlock(&priv->fw_mutex); 2178 2179 return rc; 2180 } 2181 2182 priv->fw_mutex_owner = current; 2183 } 2184 2185 priv->fw_mutex_depth++; 2186 2187 return 0; 2188} 2189 2190static void mwl8k_fw_unlock(struct ieee80211_hw *hw) 2191{ 2192 struct mwl8k_priv *priv = hw->priv; 2193 2194 if (!--priv->fw_mutex_depth) { 2195 if (!priv->hw_restart_in_progress) 2196 ieee80211_wake_queues(hw); 2197 2198 priv->fw_mutex_owner = NULL; 2199 mutex_unlock(&priv->fw_mutex); 2200 } 2201} 2202 2203static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, 2204 u32 bitmap); 2205 2206/* 2207 * Command processing. 2208 */ 2209 2210/* Timeout firmware commands after 10s */ 2211#define MWL8K_CMD_TIMEOUT_MS 10000 2212 2213static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt_hdr *cmd) 2214{ 2215 DECLARE_COMPLETION_ONSTACK(cmd_wait); 2216 struct mwl8k_priv *priv = hw->priv; 2217 void __iomem *regs = priv->regs; 2218 dma_addr_t dma_addr; 2219 unsigned int dma_size; 2220 int rc; 2221 unsigned long time_left = 0; 2222 u8 buf[32]; 2223 u32 bitmap = 0; 2224 2225 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n", 2226 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid); 2227 2228 /* Before posting firmware commands that could change the hardware 2229 * characteristics, make sure that all BSSes are stopped temporary. 2230 * Enable these stopped BSSes after completion of the commands 2231 */ 2232 2233 rc = mwl8k_fw_lock(hw); 2234 if (rc) 2235 return rc; 2236 2237 if (priv->ap_fw && priv->running_bsses) { 2238 switch (le16_to_cpu(cmd->code)) { 2239 case MWL8K_CMD_SET_RF_CHANNEL: 2240 case MWL8K_CMD_RADIO_CONTROL: 2241 case MWL8K_CMD_RF_TX_POWER: 2242 case MWL8K_CMD_TX_POWER: 2243 case MWL8K_CMD_RF_ANTENNA: 2244 case MWL8K_CMD_RTS_THRESHOLD: 2245 case MWL8K_CMD_MIMO_CONFIG: 2246 bitmap = priv->running_bsses; 2247 mwl8k_enable_bsses(hw, false, bitmap); 2248 break; 2249 } 2250 } 2251 2252 cmd->result = (__force __le16) 0xffff; 2253 dma_size = le16_to_cpu(cmd->length); 2254 dma_addr = dma_map_single(&priv->pdev->dev, cmd, dma_size, 2255 DMA_BIDIRECTIONAL); 2256 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) { 2257 rc = -ENOMEM; 2258 goto exit; 2259 } 2260 2261 priv->hostcmd_wait = &cmd_wait; 2262 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 2263 iowrite32(MWL8K_H2A_INT_DOORBELL, 2264 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2265 iowrite32(MWL8K_H2A_INT_DUMMY, 2266 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2267 2268 time_left = wait_for_completion_timeout(&cmd_wait, 2269 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); 2270 2271 priv->hostcmd_wait = NULL; 2272 2273 2274 dma_unmap_single(&priv->pdev->dev, dma_addr, dma_size, 2275 DMA_BIDIRECTIONAL); 2276 2277 if (!time_left) { 2278 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n", 2279 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2280 MWL8K_CMD_TIMEOUT_MS); 2281 rc = -ETIMEDOUT; 2282 } else { 2283 int ms; 2284 2285 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(time_left); 2286 2287 rc = cmd->result ? -EINVAL : 0; 2288 if (rc) 2289 wiphy_err(hw->wiphy, "Command %s error 0x%x\n", 2290 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2291 le16_to_cpu(cmd->result)); 2292 else if (ms > 2000) 2293 wiphy_notice(hw->wiphy, "Command %s took %d ms\n", 2294 mwl8k_cmd_name(cmd->code, 2295 buf, sizeof(buf)), 2296 ms); 2297 } 2298 2299exit: 2300 if (bitmap) 2301 mwl8k_enable_bsses(hw, true, bitmap); 2302 2303 mwl8k_fw_unlock(hw); 2304 2305 return rc; 2306} 2307 2308static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw, 2309 struct ieee80211_vif *vif, 2310 struct mwl8k_cmd_pkt_hdr *cmd) 2311{ 2312 if (vif != NULL) 2313 cmd->macid = MWL8K_VIF(vif)->macid; 2314 return mwl8k_post_cmd(hw, cmd); 2315} 2316 2317/* 2318 * Setup code shared between STA and AP firmware images. 2319 */ 2320static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw) 2321{ 2322 struct mwl8k_priv *priv = hw->priv; 2323 2324 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24)); 2325 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24)); 2326 2327 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24)); 2328 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24)); 2329 2330 priv->band_24.band = NL80211_BAND_2GHZ; 2331 priv->band_24.channels = priv->channels_24; 2332 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24); 2333 priv->band_24.bitrates = priv->rates_24; 2334 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24); 2335 2336 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24; 2337} 2338 2339static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw) 2340{ 2341 struct mwl8k_priv *priv = hw->priv; 2342 2343 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50)); 2344 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50)); 2345 2346 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50)); 2347 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50)); 2348 2349 priv->band_50.band = NL80211_BAND_5GHZ; 2350 priv->band_50.channels = priv->channels_50; 2351 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50); 2352 priv->band_50.bitrates = priv->rates_50; 2353 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50); 2354 2355 hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50; 2356} 2357 2358/* 2359 * CMD_GET_HW_SPEC (STA version). 2360 */ 2361struct mwl8k_cmd_get_hw_spec_sta { 2362 struct mwl8k_cmd_pkt_hdr header; 2363 __u8 hw_rev; 2364 __u8 host_interface; 2365 __le16 num_mcaddrs; 2366 __u8 perm_addr[ETH_ALEN]; 2367 __le16 region_code; 2368 __le32 fw_rev; 2369 __le32 ps_cookie; 2370 __le32 caps; 2371 __u8 mcs_bitmap[16]; 2372 __le32 rx_queue_ptr; 2373 __le32 num_tx_queues; 2374 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES]; 2375 __le32 caps2; 2376 __le32 num_tx_desc_per_queue; 2377 __le32 total_rxd; 2378} __packed; 2379 2380#define MWL8K_CAP_MAX_AMSDU 0x20000000 2381#define MWL8K_CAP_GREENFIELD 0x08000000 2382#define MWL8K_CAP_AMPDU 0x04000000 2383#define MWL8K_CAP_RX_STBC 0x01000000 2384#define MWL8K_CAP_TX_STBC 0x00800000 2385#define MWL8K_CAP_SHORTGI_40MHZ 0x00400000 2386#define MWL8K_CAP_SHORTGI_20MHZ 0x00200000 2387#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000 2388#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000 2389#define MWL8K_CAP_DELAY_BA 0x00003000 2390#define MWL8K_CAP_MIMO 0x00000200 2391#define MWL8K_CAP_40MHZ 0x00000100 2392#define MWL8K_CAP_BAND_MASK 0x00000007 2393#define MWL8K_CAP_5GHZ 0x00000004 2394#define MWL8K_CAP_2GHZ4 0x00000001 2395 2396static void 2397mwl8k_set_ht_caps(struct ieee80211_hw *hw, 2398 struct ieee80211_supported_band *band, u32 cap) 2399{ 2400 int rx_streams; 2401 int tx_streams; 2402 2403 band->ht_cap.ht_supported = 1; 2404 2405 if (cap & MWL8K_CAP_MAX_AMSDU) 2406 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; 2407 if (cap & MWL8K_CAP_GREENFIELD) 2408 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD; 2409 if (cap & MWL8K_CAP_AMPDU) { 2410 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 2411 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; 2412 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE; 2413 } 2414 if (cap & MWL8K_CAP_RX_STBC) 2415 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC; 2416 if (cap & MWL8K_CAP_TX_STBC) 2417 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC; 2418 if (cap & MWL8K_CAP_SHORTGI_40MHZ) 2419 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; 2420 if (cap & MWL8K_CAP_SHORTGI_20MHZ) 2421 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; 2422 if (cap & MWL8K_CAP_DELAY_BA) 2423 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA; 2424 if (cap & MWL8K_CAP_40MHZ) 2425 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; 2426 2427 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK); 2428 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK); 2429 2430 band->ht_cap.mcs.rx_mask[0] = 0xff; 2431 if (rx_streams >= 2) 2432 band->ht_cap.mcs.rx_mask[1] = 0xff; 2433 if (rx_streams >= 3) 2434 band->ht_cap.mcs.rx_mask[2] = 0xff; 2435 band->ht_cap.mcs.rx_mask[4] = 0x01; 2436 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 2437 2438 if (rx_streams != tx_streams) { 2439 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; 2440 band->ht_cap.mcs.tx_params |= (tx_streams - 1) << 2441 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; 2442 } 2443} 2444 2445static void 2446mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps) 2447{ 2448 struct mwl8k_priv *priv = hw->priv; 2449 2450 if (priv->caps) 2451 return; 2452 2453 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) { 2454 mwl8k_setup_2ghz_band(hw); 2455 if (caps & MWL8K_CAP_MIMO) 2456 mwl8k_set_ht_caps(hw, &priv->band_24, caps); 2457 } 2458 2459 if (caps & MWL8K_CAP_5GHZ) { 2460 mwl8k_setup_5ghz_band(hw); 2461 if (caps & MWL8K_CAP_MIMO) 2462 mwl8k_set_ht_caps(hw, &priv->band_50, caps); 2463 } 2464 2465 priv->caps = caps; 2466} 2467 2468static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw) 2469{ 2470 struct mwl8k_priv *priv = hw->priv; 2471 struct mwl8k_cmd_get_hw_spec_sta *cmd; 2472 int rc; 2473 int i; 2474 2475 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2476 if (cmd == NULL) 2477 return -ENOMEM; 2478 2479 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2480 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2481 2482 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2483 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2484 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2485 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2486 for (i = 0; i < mwl8k_tx_queues(priv); i++) 2487 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma); 2488 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2489 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2490 2491 rc = mwl8k_post_cmd(hw, &cmd->header); 2492 2493 if (!rc) { 2494 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2495 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2496 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2497 priv->hw_rev = cmd->hw_rev; 2498 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2499 priv->ap_macids_supported = 0x00000000; 2500 priv->sta_macids_supported = 0x00000001; 2501 } 2502 2503 kfree(cmd); 2504 return rc; 2505} 2506 2507/* 2508 * CMD_GET_HW_SPEC (AP version). 2509 */ 2510struct mwl8k_cmd_get_hw_spec_ap { 2511 struct mwl8k_cmd_pkt_hdr header; 2512 __u8 hw_rev; 2513 __u8 host_interface; 2514 __le16 num_wcb; 2515 __le16 num_mcaddrs; 2516 __u8 perm_addr[ETH_ALEN]; 2517 __le16 region_code; 2518 __le16 num_antenna; 2519 __le32 fw_rev; 2520 __le32 wcbbase0; 2521 __le32 rxwrptr; 2522 __le32 rxrdptr; 2523 __le32 ps_cookie; 2524 __le32 wcbbase1; 2525 __le32 wcbbase2; 2526 __le32 wcbbase3; 2527 __le32 fw_api_version; 2528 __le32 caps; 2529 __le32 num_of_ampdu_queues; 2530 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES]; 2531} __packed; 2532 2533static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw) 2534{ 2535 struct mwl8k_priv *priv = hw->priv; 2536 struct mwl8k_cmd_get_hw_spec_ap *cmd; 2537 int rc, i; 2538 u32 api_version; 2539 2540 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2541 if (cmd == NULL) 2542 return -ENOMEM; 2543 2544 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2545 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2546 2547 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2548 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2549 2550 rc = mwl8k_post_cmd(hw, &cmd->header); 2551 2552 if (!rc) { 2553 int off; 2554 2555 api_version = le32_to_cpu(cmd->fw_api_version); 2556 if (priv->device_info->fw_api_ap != api_version) { 2557 printk(KERN_ERR "%s: Unsupported fw API version for %s." 2558 " Expected %d got %d.\n", MWL8K_NAME, 2559 priv->device_info->part_name, 2560 priv->device_info->fw_api_ap, 2561 api_version); 2562 rc = -EINVAL; 2563 goto done; 2564 } 2565 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2566 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2567 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2568 priv->hw_rev = cmd->hw_rev; 2569 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2570 priv->ap_macids_supported = 0x000000ff; 2571 priv->sta_macids_supported = 0x00000100; 2572 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues); 2573 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) { 2574 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues" 2575 " but we only support %d.\n", 2576 priv->num_ampdu_queues, 2577 MWL8K_MAX_AMPDU_QUEUES); 2578 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES; 2579 } 2580 off = le32_to_cpu(cmd->rxwrptr) & 0xffff; 2581 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2582 2583 off = le32_to_cpu(cmd->rxrdptr) & 0xffff; 2584 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2585 2586 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff; 2587 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff; 2588 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff; 2589 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff; 2590 2591 for (i = 0; i < priv->num_ampdu_queues; i++) 2592 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] = 2593 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff; 2594 } 2595 2596done: 2597 kfree(cmd); 2598 return rc; 2599} 2600 2601/* 2602 * CMD_SET_HW_SPEC. 2603 */ 2604struct mwl8k_cmd_set_hw_spec { 2605 struct mwl8k_cmd_pkt_hdr header; 2606 __u8 hw_rev; 2607 __u8 host_interface; 2608 __le16 num_mcaddrs; 2609 __u8 perm_addr[ETH_ALEN]; 2610 __le16 region_code; 2611 __le32 fw_rev; 2612 __le32 ps_cookie; 2613 __le32 caps; 2614 __le32 rx_queue_ptr; 2615 __le32 num_tx_queues; 2616 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES]; 2617 __le32 flags; 2618 __le32 num_tx_desc_per_queue; 2619 __le32 total_rxd; 2620} __packed; 2621 2622/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause 2623 * packets to expire 500 ms after the timestamp in the tx descriptor. That is, 2624 * the packets that are queued for more than 500ms, will be dropped in the 2625 * hardware. This helps minimizing the issues caused due to head-of-line 2626 * blocking where a slow client can hog the bandwidth and affect traffic to a 2627 * faster client. 2628 */ 2629#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400 2630#define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200 2631#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080 2632#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020 2633#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010 2634 2635static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw) 2636{ 2637 struct mwl8k_priv *priv = hw->priv; 2638 struct mwl8k_cmd_set_hw_spec *cmd; 2639 int rc; 2640 int i; 2641 2642 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2643 if (cmd == NULL) 2644 return -ENOMEM; 2645 2646 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC); 2647 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2648 2649 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2650 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2651 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2652 2653 /* 2654 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in 2655 * that order. Firmware has Q3 as highest priority and Q0 as lowest 2656 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the 2657 * priority is interpreted the right way in firmware. 2658 */ 2659 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 2660 int j = mwl8k_tx_queues(priv) - 1 - i; 2661 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma); 2662 } 2663 2664 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT | 2665 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP | 2666 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON | 2667 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY | 2668 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR); 2669 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2670 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2671 2672 rc = mwl8k_post_cmd(hw, &cmd->header); 2673 kfree(cmd); 2674 2675 return rc; 2676} 2677 2678/* 2679 * CMD_MAC_MULTICAST_ADR. 2680 */ 2681struct mwl8k_cmd_mac_multicast_adr { 2682 struct mwl8k_cmd_pkt_hdr header; 2683 __le16 action; 2684 __le16 numaddr; 2685 __u8 addr[][ETH_ALEN]; 2686}; 2687 2688#define MWL8K_ENABLE_RX_DIRECTED 0x0001 2689#define MWL8K_ENABLE_RX_MULTICAST 0x0002 2690#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004 2691#define MWL8K_ENABLE_RX_BROADCAST 0x0008 2692 2693static struct mwl8k_cmd_pkt_hdr * 2694__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti, 2695 struct netdev_hw_addr_list *mc_list) 2696{ 2697 struct mwl8k_priv *priv = hw->priv; 2698 struct mwl8k_cmd_mac_multicast_adr *cmd; 2699 int size; 2700 int mc_count = 0; 2701 2702 if (mc_list) 2703 mc_count = netdev_hw_addr_list_count(mc_list); 2704 2705 if (allmulti || mc_count > priv->num_mcaddrs) { 2706 allmulti = 1; 2707 mc_count = 0; 2708 } 2709 2710 size = sizeof(*cmd) + mc_count * ETH_ALEN; 2711 2712 cmd = kzalloc(size, GFP_ATOMIC); 2713 if (cmd == NULL) 2714 return NULL; 2715 2716 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); 2717 cmd->header.length = cpu_to_le16(size); 2718 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED | 2719 MWL8K_ENABLE_RX_BROADCAST); 2720 2721 if (allmulti) { 2722 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST); 2723 } else if (mc_count) { 2724 struct netdev_hw_addr *ha; 2725 int i = 0; 2726 2727 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); 2728 cmd->numaddr = cpu_to_le16(mc_count); 2729 netdev_hw_addr_list_for_each(ha, mc_list) { 2730 memcpy(cmd->addr[i++], ha->addr, ETH_ALEN); 2731 } 2732 } 2733 2734 return &cmd->header; 2735} 2736 2737/* 2738 * CMD_GET_STAT. 2739 */ 2740struct mwl8k_cmd_get_stat { 2741 struct mwl8k_cmd_pkt_hdr header; 2742 __le32 stats[64]; 2743} __packed; 2744 2745#define MWL8K_STAT_ACK_FAILURE 9 2746#define MWL8K_STAT_RTS_FAILURE 12 2747#define MWL8K_STAT_FCS_ERROR 24 2748#define MWL8K_STAT_RTS_SUCCESS 11 2749 2750static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw, 2751 struct ieee80211_low_level_stats *stats) 2752{ 2753 struct mwl8k_cmd_get_stat *cmd; 2754 int rc; 2755 2756 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2757 if (cmd == NULL) 2758 return -ENOMEM; 2759 2760 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); 2761 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2762 2763 rc = mwl8k_post_cmd(hw, &cmd->header); 2764 if (!rc) { 2765 stats->dot11ACKFailureCount = 2766 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); 2767 stats->dot11RTSFailureCount = 2768 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); 2769 stats->dot11FCSErrorCount = 2770 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); 2771 stats->dot11RTSSuccessCount = 2772 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); 2773 } 2774 kfree(cmd); 2775 2776 return rc; 2777} 2778 2779/* 2780 * CMD_RADIO_CONTROL. 2781 */ 2782struct mwl8k_cmd_radio_control { 2783 struct mwl8k_cmd_pkt_hdr header; 2784 __le16 action; 2785 __le16 control; 2786 __le16 radio_on; 2787} __packed; 2788 2789static int 2790mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force) 2791{ 2792 struct mwl8k_priv *priv = hw->priv; 2793 struct mwl8k_cmd_radio_control *cmd; 2794 int rc; 2795 2796 if (enable == priv->radio_on && !force) 2797 return 0; 2798 2799 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2800 if (cmd == NULL) 2801 return -ENOMEM; 2802 2803 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); 2804 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2805 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2806 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1); 2807 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); 2808 2809 rc = mwl8k_post_cmd(hw, &cmd->header); 2810 kfree(cmd); 2811 2812 if (!rc) 2813 priv->radio_on = enable; 2814 2815 return rc; 2816} 2817 2818static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw) 2819{ 2820 return mwl8k_cmd_radio_control(hw, 0, 0); 2821} 2822 2823static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw) 2824{ 2825 return mwl8k_cmd_radio_control(hw, 1, 0); 2826} 2827 2828static int 2829mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) 2830{ 2831 struct mwl8k_priv *priv = hw->priv; 2832 2833 priv->radio_short_preamble = short_preamble; 2834 2835 return mwl8k_cmd_radio_control(hw, 1, 1); 2836} 2837 2838/* 2839 * CMD_RF_TX_POWER. 2840 */ 2841#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8 2842 2843struct mwl8k_cmd_rf_tx_power { 2844 struct mwl8k_cmd_pkt_hdr header; 2845 __le16 action; 2846 __le16 support_level; 2847 __le16 current_level; 2848 __le16 reserved; 2849 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL]; 2850} __packed; 2851 2852static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm) 2853{ 2854 struct mwl8k_cmd_rf_tx_power *cmd; 2855 int rc; 2856 2857 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2858 if (cmd == NULL) 2859 return -ENOMEM; 2860 2861 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); 2862 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2863 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2864 cmd->support_level = cpu_to_le16(dBm); 2865 2866 rc = mwl8k_post_cmd(hw, &cmd->header); 2867 kfree(cmd); 2868 2869 return rc; 2870} 2871 2872/* 2873 * CMD_TX_POWER. 2874 */ 2875#define MWL8K_TX_POWER_LEVEL_TOTAL 12 2876 2877struct mwl8k_cmd_tx_power { 2878 struct mwl8k_cmd_pkt_hdr header; 2879 __le16 action; 2880 __le16 band; 2881 __le16 channel; 2882 __le16 bw; 2883 __le16 sub_ch; 2884 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; 2885} __packed; 2886 2887static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw, 2888 struct ieee80211_conf *conf, 2889 unsigned short pwr) 2890{ 2891 struct ieee80211_channel *channel = conf->chandef.chan; 2892 enum nl80211_channel_type channel_type = 2893 cfg80211_get_chandef_type(&conf->chandef); 2894 struct mwl8k_cmd_tx_power *cmd; 2895 int rc; 2896 int i; 2897 2898 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2899 if (cmd == NULL) 2900 return -ENOMEM; 2901 2902 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER); 2903 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2904 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST); 2905 2906 if (channel->band == NL80211_BAND_2GHZ) 2907 cmd->band = cpu_to_le16(0x1); 2908 else if (channel->band == NL80211_BAND_5GHZ) 2909 cmd->band = cpu_to_le16(0x4); 2910 2911 cmd->channel = cpu_to_le16(channel->hw_value); 2912 2913 if (channel_type == NL80211_CHAN_NO_HT || 2914 channel_type == NL80211_CHAN_HT20) { 2915 cmd->bw = cpu_to_le16(0x2); 2916 } else { 2917 cmd->bw = cpu_to_le16(0x4); 2918 if (channel_type == NL80211_CHAN_HT40MINUS) 2919 cmd->sub_ch = cpu_to_le16(0x3); 2920 else if (channel_type == NL80211_CHAN_HT40PLUS) 2921 cmd->sub_ch = cpu_to_le16(0x1); 2922 } 2923 2924 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++) 2925 cmd->power_level_list[i] = cpu_to_le16(pwr); 2926 2927 rc = mwl8k_post_cmd(hw, &cmd->header); 2928 kfree(cmd); 2929 2930 return rc; 2931} 2932 2933/* 2934 * CMD_RF_ANTENNA. 2935 */ 2936struct mwl8k_cmd_rf_antenna { 2937 struct mwl8k_cmd_pkt_hdr header; 2938 __le16 antenna; 2939 __le16 mode; 2940} __packed; 2941 2942#define MWL8K_RF_ANTENNA_RX 1 2943#define MWL8K_RF_ANTENNA_TX 2 2944 2945static int 2946mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask) 2947{ 2948 struct mwl8k_cmd_rf_antenna *cmd; 2949 int rc; 2950 2951 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2952 if (cmd == NULL) 2953 return -ENOMEM; 2954 2955 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA); 2956 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2957 cmd->antenna = cpu_to_le16(antenna); 2958 cmd->mode = cpu_to_le16(mask); 2959 2960 rc = mwl8k_post_cmd(hw, &cmd->header); 2961 kfree(cmd); 2962 2963 return rc; 2964} 2965 2966/* 2967 * CMD_SET_BEACON. 2968 */ 2969 2970static bool mwl8k_beacon_has_ds_params(const u8 *buf, int len) 2971{ 2972 const struct ieee80211_mgmt *mgmt = (const void *)buf; 2973 int ies_len; 2974 2975 if (len <= offsetof(struct ieee80211_mgmt, u.beacon.variable)) 2976 return false; 2977 2978 ies_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable); 2979 2980 return cfg80211_find_ie(WLAN_EID_DS_PARAMS, mgmt->u.beacon.variable, 2981 ies_len) != NULL; 2982} 2983 2984static void mwl8k_beacon_copy_inject_ds_params(struct ieee80211_hw *hw, 2985 u8 *buf_dst, const u8 *buf_src, 2986 int src_len) 2987{ 2988 const struct ieee80211_mgmt *mgmt = (const void *)buf_src; 2989 static const u8 before_ds_params[] = { 2990 WLAN_EID_SSID, 2991 WLAN_EID_SUPP_RATES, 2992 }; 2993 const u8 *ies; 2994 int hdr_len, left, offs, pos; 2995 2996 ies = mgmt->u.beacon.variable; 2997 hdr_len = offsetof(struct ieee80211_mgmt, u.beacon.variable); 2998 2999 offs = ieee80211_ie_split(ies, src_len - hdr_len, before_ds_params, 3000 ARRAY_SIZE(before_ds_params), 0); 3001 3002 pos = hdr_len + offs; 3003 left = src_len - pos; 3004 3005 memcpy(buf_dst, buf_src, pos); 3006 3007 /* Inject a DSSS Parameter Set after SSID + Supp Rates */ 3008 buf_dst[pos + 0] = WLAN_EID_DS_PARAMS; 3009 buf_dst[pos + 1] = 1; 3010 buf_dst[pos + 2] = hw->conf.chandef.chan->hw_value; 3011 3012 memcpy(buf_dst + pos + 3, buf_src + pos, left); 3013} 3014struct mwl8k_cmd_set_beacon { 3015 struct mwl8k_cmd_pkt_hdr header; 3016 __le16 beacon_len; 3017 __u8 beacon[]; 3018}; 3019 3020static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw, 3021 struct ieee80211_vif *vif, u8 *beacon, int len) 3022{ 3023 bool ds_params_present = mwl8k_beacon_has_ds_params(beacon, len); 3024 struct mwl8k_cmd_set_beacon *cmd; 3025 int rc, final_len = len; 3026 3027 if (!ds_params_present) { 3028 /* 3029 * mwl8k firmware requires a DS Params IE with the current 3030 * channel in AP beacons. If mac80211/hostapd does not 3031 * include it, inject one here. IE ID + length + channel 3032 * number = 3 bytes. 3033 */ 3034 final_len += 3; 3035 } 3036 3037 cmd = kzalloc(sizeof(*cmd) + final_len, GFP_KERNEL); 3038 if (cmd == NULL) 3039 return -ENOMEM; 3040 3041 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON); 3042 cmd->header.length = cpu_to_le16(sizeof(*cmd) + final_len); 3043 cmd->beacon_len = cpu_to_le16(final_len); 3044 3045 if (ds_params_present) 3046 memcpy(cmd->beacon, beacon, len); 3047 else 3048 mwl8k_beacon_copy_inject_ds_params(hw, cmd->beacon, beacon, 3049 len); 3050 3051 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3052 kfree(cmd); 3053 3054 return rc; 3055} 3056 3057/* 3058 * CMD_SET_PRE_SCAN. 3059 */ 3060struct mwl8k_cmd_set_pre_scan { 3061 struct mwl8k_cmd_pkt_hdr header; 3062} __packed; 3063 3064static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) 3065{ 3066 struct mwl8k_cmd_set_pre_scan *cmd; 3067 int rc; 3068 3069 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3070 if (cmd == NULL) 3071 return -ENOMEM; 3072 3073 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); 3074 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3075 3076 rc = mwl8k_post_cmd(hw, &cmd->header); 3077 kfree(cmd); 3078 3079 return rc; 3080} 3081 3082/* 3083 * CMD_BBP_REG_ACCESS. 3084 */ 3085struct mwl8k_cmd_bbp_reg_access { 3086 struct mwl8k_cmd_pkt_hdr header; 3087 __le16 action; 3088 __le16 offset; 3089 u8 value; 3090 u8 rsrv[3]; 3091} __packed; 3092 3093static int 3094mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw, 3095 u16 action, 3096 u16 offset, 3097 u8 *value) 3098{ 3099 struct mwl8k_cmd_bbp_reg_access *cmd; 3100 int rc; 3101 3102 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3103 if (cmd == NULL) 3104 return -ENOMEM; 3105 3106 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS); 3107 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3108 cmd->action = cpu_to_le16(action); 3109 cmd->offset = cpu_to_le16(offset); 3110 3111 rc = mwl8k_post_cmd(hw, &cmd->header); 3112 3113 if (!rc) 3114 *value = cmd->value; 3115 else 3116 *value = 0; 3117 3118 kfree(cmd); 3119 3120 return rc; 3121} 3122 3123/* 3124 * CMD_SET_POST_SCAN. 3125 */ 3126struct mwl8k_cmd_set_post_scan { 3127 struct mwl8k_cmd_pkt_hdr header; 3128 __le32 isibss; 3129 __u8 bssid[ETH_ALEN]; 3130} __packed; 3131 3132static int 3133mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac) 3134{ 3135 struct mwl8k_cmd_set_post_scan *cmd; 3136 int rc; 3137 3138 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3139 if (cmd == NULL) 3140 return -ENOMEM; 3141 3142 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); 3143 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3144 cmd->isibss = 0; 3145 memcpy(cmd->bssid, mac, ETH_ALEN); 3146 3147 rc = mwl8k_post_cmd(hw, &cmd->header); 3148 kfree(cmd); 3149 3150 return rc; 3151} 3152 3153static int freq_to_idx(struct mwl8k_priv *priv, int freq) 3154{ 3155 struct ieee80211_supported_band *sband; 3156 int band, ch, idx = 0; 3157 3158 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) { 3159 sband = priv->hw->wiphy->bands[band]; 3160 if (!sband) 3161 continue; 3162 3163 for (ch = 0; ch < sband->n_channels; ch++, idx++) 3164 if (sband->channels[ch].center_freq == freq) 3165 goto exit; 3166 } 3167 3168exit: 3169 return idx; 3170} 3171 3172static void mwl8k_update_survey(struct mwl8k_priv *priv, 3173 struct ieee80211_channel *channel) 3174{ 3175 u32 cca_cnt, rx_rdy; 3176 s8 nf = 0, idx; 3177 struct survey_info *survey; 3178 3179 idx = freq_to_idx(priv, priv->acs_chan->center_freq); 3180 if (idx >= MWL8K_NUM_CHANS) { 3181 wiphy_err(priv->hw->wiphy, "Failed to update survey\n"); 3182 return; 3183 } 3184 3185 survey = &priv->survey[idx]; 3186 3187 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG); 3188 cca_cnt /= 1000; /* uSecs to mSecs */ 3189 survey->time_busy = (u64) cca_cnt; 3190 3191 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG); 3192 rx_rdy /= 1000; /* uSecs to mSecs */ 3193 survey->time_rx = (u64) rx_rdy; 3194 3195 priv->channel_time = jiffies - priv->channel_time; 3196 survey->time = jiffies_to_msecs(priv->channel_time); 3197 3198 survey->channel = channel; 3199 3200 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf); 3201 3202 /* Make sure sign is negative else ACS at hostapd fails */ 3203 survey->noise = nf * -1; 3204 3205 survey->filled = SURVEY_INFO_NOISE_DBM | 3206 SURVEY_INFO_TIME | 3207 SURVEY_INFO_TIME_BUSY | 3208 SURVEY_INFO_TIME_RX; 3209} 3210 3211/* 3212 * CMD_SET_RF_CHANNEL. 3213 */ 3214struct mwl8k_cmd_set_rf_channel { 3215 struct mwl8k_cmd_pkt_hdr header; 3216 __le16 action; 3217 __u8 current_channel; 3218 __le32 channel_flags; 3219} __packed; 3220 3221static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, 3222 struct ieee80211_conf *conf) 3223{ 3224 struct ieee80211_channel *channel = conf->chandef.chan; 3225 enum nl80211_channel_type channel_type = 3226 cfg80211_get_chandef_type(&conf->chandef); 3227 struct mwl8k_cmd_set_rf_channel *cmd; 3228 struct mwl8k_priv *priv = hw->priv; 3229 int rc; 3230 3231 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3232 if (cmd == NULL) 3233 return -ENOMEM; 3234 3235 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); 3236 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3237 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3238 cmd->current_channel = channel->hw_value; 3239 3240 if (channel->band == NL80211_BAND_2GHZ) 3241 cmd->channel_flags |= cpu_to_le32(0x00000001); 3242 else if (channel->band == NL80211_BAND_5GHZ) 3243 cmd->channel_flags |= cpu_to_le32(0x00000004); 3244 3245 if (!priv->sw_scan_start) { 3246 if (channel_type == NL80211_CHAN_NO_HT || 3247 channel_type == NL80211_CHAN_HT20) 3248 cmd->channel_flags |= cpu_to_le32(0x00000080); 3249 else if (channel_type == NL80211_CHAN_HT40MINUS) 3250 cmd->channel_flags |= cpu_to_le32(0x000001900); 3251 else if (channel_type == NL80211_CHAN_HT40PLUS) 3252 cmd->channel_flags |= cpu_to_le32(0x000000900); 3253 } else { 3254 cmd->channel_flags |= cpu_to_le32(0x00000080); 3255 } 3256 3257 if (priv->sw_scan_start) { 3258 /* Store current channel stats 3259 * before switching to newer one. 3260 * This will be processed only for AP fw. 3261 */ 3262 if (priv->channel_time != 0) 3263 mwl8k_update_survey(priv, priv->acs_chan); 3264 3265 priv->channel_time = jiffies; 3266 priv->acs_chan = channel; 3267 } 3268 3269 rc = mwl8k_post_cmd(hw, &cmd->header); 3270 kfree(cmd); 3271 3272 return rc; 3273} 3274 3275/* 3276 * CMD_SET_AID. 3277 */ 3278#define MWL8K_FRAME_PROT_DISABLED 0x00 3279#define MWL8K_FRAME_PROT_11G 0x07 3280#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 3281#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 3282 3283struct mwl8k_cmd_update_set_aid { 3284 struct mwl8k_cmd_pkt_hdr header; 3285 __le16 aid; 3286 3287 /* AP's MAC address (BSSID) */ 3288 __u8 bssid[ETH_ALEN]; 3289 __le16 protection_mode; 3290 __u8 supp_rates[14]; 3291} __packed; 3292 3293static void legacy_rate_mask_to_array(u8 *rates, u32 mask) 3294{ 3295 int i; 3296 int j; 3297 3298 /* 3299 * Clear nonstandard rate 4. 3300 */ 3301 mask &= 0x1fef; 3302 3303 for (i = 0, j = 0; i < 13; i++) { 3304 if (mask & (1 << i)) 3305 rates[j++] = mwl8k_rates_24[i].hw_value; 3306 } 3307} 3308 3309static int 3310mwl8k_cmd_set_aid(struct ieee80211_hw *hw, 3311 struct ieee80211_vif *vif, u32 legacy_rate_mask) 3312{ 3313 struct mwl8k_cmd_update_set_aid *cmd; 3314 u16 prot_mode; 3315 int rc; 3316 3317 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3318 if (cmd == NULL) 3319 return -ENOMEM; 3320 3321 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); 3322 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3323 cmd->aid = cpu_to_le16(vif->cfg.aid); 3324 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 3325 3326 if (vif->bss_conf.use_cts_prot) { 3327 prot_mode = MWL8K_FRAME_PROT_11G; 3328 } else { 3329 switch (vif->bss_conf.ht_operation_mode & 3330 IEEE80211_HT_OP_MODE_PROTECTION) { 3331 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 3332 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; 3333 break; 3334 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 3335 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; 3336 break; 3337 default: 3338 prot_mode = MWL8K_FRAME_PROT_DISABLED; 3339 break; 3340 } 3341 } 3342 cmd->protection_mode = cpu_to_le16(prot_mode); 3343 3344 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask); 3345 3346 rc = mwl8k_post_cmd(hw, &cmd->header); 3347 kfree(cmd); 3348 3349 return rc; 3350} 3351 3352/* 3353 * CMD_SET_RATE. 3354 */ 3355struct mwl8k_cmd_set_rate { 3356 struct mwl8k_cmd_pkt_hdr header; 3357 __u8 legacy_rates[14]; 3358 3359 /* Bitmap for supported MCS codes. */ 3360 __u8 mcs_set[16]; 3361 __u8 reserved[16]; 3362} __packed; 3363 3364static int 3365mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3366 u32 legacy_rate_mask, u8 *mcs_rates) 3367{ 3368 struct mwl8k_cmd_set_rate *cmd; 3369 int rc; 3370 3371 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3372 if (cmd == NULL) 3373 return -ENOMEM; 3374 3375 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); 3376 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3377 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask); 3378 memcpy(cmd->mcs_set, mcs_rates, 16); 3379 3380 rc = mwl8k_post_cmd(hw, &cmd->header); 3381 kfree(cmd); 3382 3383 return rc; 3384} 3385 3386/* 3387 * CMD_FINALIZE_JOIN. 3388 */ 3389#define MWL8K_FJ_BEACON_MAXLEN 128 3390 3391struct mwl8k_cmd_finalize_join { 3392 struct mwl8k_cmd_pkt_hdr header; 3393 __le32 sleep_interval; /* Number of beacon periods to sleep */ 3394 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; 3395} __packed; 3396 3397static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame, 3398 int framelen, int dtim) 3399{ 3400 struct mwl8k_cmd_finalize_join *cmd; 3401 struct ieee80211_mgmt *payload = frame; 3402 int payload_len; 3403 int rc; 3404 3405 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3406 if (cmd == NULL) 3407 return -ENOMEM; 3408 3409 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); 3410 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3411 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1); 3412 3413 payload_len = framelen - ieee80211_hdrlen(payload->frame_control); 3414 if (payload_len < 0) 3415 payload_len = 0; 3416 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN) 3417 payload_len = MWL8K_FJ_BEACON_MAXLEN; 3418 3419 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); 3420 3421 rc = mwl8k_post_cmd(hw, &cmd->header); 3422 kfree(cmd); 3423 3424 return rc; 3425} 3426 3427/* 3428 * CMD_SET_RTS_THRESHOLD. 3429 */ 3430struct mwl8k_cmd_set_rts_threshold { 3431 struct mwl8k_cmd_pkt_hdr header; 3432 __le16 action; 3433 __le16 threshold; 3434} __packed; 3435 3436static int 3437mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int radio_idx, 3438 int rts_thresh) 3439{ 3440 struct mwl8k_cmd_set_rts_threshold *cmd; 3441 int rc; 3442 3443 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3444 if (cmd == NULL) 3445 return -ENOMEM; 3446 3447 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); 3448 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3449 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3450 cmd->threshold = cpu_to_le16(rts_thresh); 3451 3452 rc = mwl8k_post_cmd(hw, &cmd->header); 3453 kfree(cmd); 3454 3455 return rc; 3456} 3457 3458/* 3459 * CMD_SET_SLOT. 3460 */ 3461struct mwl8k_cmd_set_slot { 3462 struct mwl8k_cmd_pkt_hdr header; 3463 __le16 action; 3464 __u8 short_slot; 3465} __packed; 3466 3467static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time) 3468{ 3469 struct mwl8k_cmd_set_slot *cmd; 3470 int rc; 3471 3472 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3473 if (cmd == NULL) 3474 return -ENOMEM; 3475 3476 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); 3477 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3478 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3479 cmd->short_slot = short_slot_time; 3480 3481 rc = mwl8k_post_cmd(hw, &cmd->header); 3482 kfree(cmd); 3483 3484 return rc; 3485} 3486 3487/* 3488 * CMD_SET_EDCA_PARAMS. 3489 */ 3490struct mwl8k_cmd_set_edca_params { 3491 struct mwl8k_cmd_pkt_hdr header; 3492 3493 /* See MWL8K_SET_EDCA_XXX below */ 3494 __le16 action; 3495 3496 /* TX opportunity in units of 32 us */ 3497 __le16 txop; 3498 3499 union { 3500 struct { 3501 /* Log exponent of max contention period: 0...15 */ 3502 __le32 log_cw_max; 3503 3504 /* Log exponent of min contention period: 0...15 */ 3505 __le32 log_cw_min; 3506 3507 /* Adaptive interframe spacing in units of 32us */ 3508 __u8 aifs; 3509 3510 /* TX queue to configure */ 3511 __u8 txq; 3512 } ap; 3513 struct { 3514 /* Log exponent of max contention period: 0...15 */ 3515 __u8 log_cw_max; 3516 3517 /* Log exponent of min contention period: 0...15 */ 3518 __u8 log_cw_min; 3519 3520 /* Adaptive interframe spacing in units of 32us */ 3521 __u8 aifs; 3522 3523 /* TX queue to configure */ 3524 __u8 txq; 3525 } sta; 3526 }; 3527} __packed; 3528 3529#define MWL8K_SET_EDCA_CW 0x01 3530#define MWL8K_SET_EDCA_TXOP 0x02 3531#define MWL8K_SET_EDCA_AIFS 0x04 3532 3533#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ 3534 MWL8K_SET_EDCA_TXOP | \ 3535 MWL8K_SET_EDCA_AIFS) 3536 3537static int 3538mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, 3539 __u16 cw_min, __u16 cw_max, 3540 __u8 aifs, __u16 txop) 3541{ 3542 struct mwl8k_priv *priv = hw->priv; 3543 struct mwl8k_cmd_set_edca_params *cmd; 3544 int rc; 3545 3546 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3547 if (cmd == NULL) 3548 return -ENOMEM; 3549 3550 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); 3551 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3552 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); 3553 cmd->txop = cpu_to_le16(txop); 3554 if (priv->ap_fw) { 3555 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1)); 3556 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1)); 3557 cmd->ap.aifs = aifs; 3558 cmd->ap.txq = qnum; 3559 } else { 3560 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1); 3561 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1); 3562 cmd->sta.aifs = aifs; 3563 cmd->sta.txq = qnum; 3564 } 3565 3566 rc = mwl8k_post_cmd(hw, &cmd->header); 3567 kfree(cmd); 3568 3569 return rc; 3570} 3571 3572/* 3573 * CMD_SET_WMM_MODE. 3574 */ 3575struct mwl8k_cmd_set_wmm_mode { 3576 struct mwl8k_cmd_pkt_hdr header; 3577 __le16 action; 3578} __packed; 3579 3580static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable) 3581{ 3582 struct mwl8k_priv *priv = hw->priv; 3583 struct mwl8k_cmd_set_wmm_mode *cmd; 3584 int rc; 3585 3586 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3587 if (cmd == NULL) 3588 return -ENOMEM; 3589 3590 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); 3591 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3592 cmd->action = cpu_to_le16(!!enable); 3593 3594 rc = mwl8k_post_cmd(hw, &cmd->header); 3595 kfree(cmd); 3596 3597 if (!rc) 3598 priv->wmm_enabled = enable; 3599 3600 return rc; 3601} 3602 3603/* 3604 * CMD_MIMO_CONFIG. 3605 */ 3606struct mwl8k_cmd_mimo_config { 3607 struct mwl8k_cmd_pkt_hdr header; 3608 __le32 action; 3609 __u8 rx_antenna_map; 3610 __u8 tx_antenna_map; 3611} __packed; 3612 3613static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) 3614{ 3615 struct mwl8k_cmd_mimo_config *cmd; 3616 int rc; 3617 3618 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3619 if (cmd == NULL) 3620 return -ENOMEM; 3621 3622 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); 3623 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3624 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); 3625 cmd->rx_antenna_map = rx; 3626 cmd->tx_antenna_map = tx; 3627 3628 rc = mwl8k_post_cmd(hw, &cmd->header); 3629 kfree(cmd); 3630 3631 return rc; 3632} 3633 3634/* 3635 * CMD_USE_FIXED_RATE (STA version). 3636 */ 3637struct mwl8k_cmd_use_fixed_rate_sta { 3638 struct mwl8k_cmd_pkt_hdr header; 3639 __le32 action; 3640 __le32 allow_rate_drop; 3641 __le32 num_rates; 3642 struct { 3643 __le32 is_ht_rate; 3644 __le32 enable_retry; 3645 __le32 rate; 3646 __le32 retry_count; 3647 } rate_entry[8]; 3648 __le32 rate_type; 3649 __le32 reserved1; 3650 __le32 reserved2; 3651} __packed; 3652 3653#define MWL8K_USE_AUTO_RATE 0x0002 3654#define MWL8K_UCAST_RATE 0 3655 3656static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw) 3657{ 3658 struct mwl8k_cmd_use_fixed_rate_sta *cmd; 3659 int rc; 3660 3661 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3662 if (cmd == NULL) 3663 return -ENOMEM; 3664 3665 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3666 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3667 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3668 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE); 3669 3670 rc = mwl8k_post_cmd(hw, &cmd->header); 3671 kfree(cmd); 3672 3673 return rc; 3674} 3675 3676/* 3677 * CMD_USE_FIXED_RATE (AP version). 3678 */ 3679struct mwl8k_cmd_use_fixed_rate_ap { 3680 struct mwl8k_cmd_pkt_hdr header; 3681 __le32 action; 3682 __le32 allow_rate_drop; 3683 __le32 num_rates; 3684 struct mwl8k_rate_entry_ap { 3685 __le32 is_ht_rate; 3686 __le32 enable_retry; 3687 __le32 rate; 3688 __le32 retry_count; 3689 } rate_entry[4]; 3690 u8 multicast_rate; 3691 u8 multicast_rate_type; 3692 u8 management_rate; 3693} __packed; 3694 3695static int 3696mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt) 3697{ 3698 struct mwl8k_cmd_use_fixed_rate_ap *cmd; 3699 int rc; 3700 3701 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3702 if (cmd == NULL) 3703 return -ENOMEM; 3704 3705 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3706 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3707 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3708 cmd->multicast_rate = mcast; 3709 cmd->management_rate = mgmt; 3710 3711 rc = mwl8k_post_cmd(hw, &cmd->header); 3712 kfree(cmd); 3713 3714 return rc; 3715} 3716 3717/* 3718 * CMD_ENABLE_SNIFFER. 3719 */ 3720struct mwl8k_cmd_enable_sniffer { 3721 struct mwl8k_cmd_pkt_hdr header; 3722 __le32 action; 3723} __packed; 3724 3725static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable) 3726{ 3727 struct mwl8k_cmd_enable_sniffer *cmd; 3728 int rc; 3729 3730 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3731 if (cmd == NULL) 3732 return -ENOMEM; 3733 3734 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); 3735 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3736 cmd->action = cpu_to_le32(!!enable); 3737 3738 rc = mwl8k_post_cmd(hw, &cmd->header); 3739 kfree(cmd); 3740 3741 return rc; 3742} 3743 3744struct mwl8k_cmd_update_mac_addr { 3745 struct mwl8k_cmd_pkt_hdr header; 3746 union { 3747 struct { 3748 __le16 mac_type; 3749 __u8 mac_addr[ETH_ALEN]; 3750 } mbss; 3751 __u8 mac_addr[ETH_ALEN]; 3752 }; 3753} __packed; 3754 3755#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0 3756#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1 3757#define MWL8K_MAC_TYPE_PRIMARY_AP 2 3758#define MWL8K_MAC_TYPE_SECONDARY_AP 3 3759 3760static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw, 3761 struct ieee80211_vif *vif, u8 *mac, bool set) 3762{ 3763 struct mwl8k_priv *priv = hw->priv; 3764 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3765 struct mwl8k_cmd_update_mac_addr *cmd; 3766 int mac_type; 3767 int rc; 3768 3769 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3770 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) { 3771 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported)) 3772 if (priv->ap_fw) 3773 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3774 else 3775 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT; 3776 else 3777 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3778 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) { 3779 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported)) 3780 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3781 else 3782 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP; 3783 } 3784 3785 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3786 if (cmd == NULL) 3787 return -ENOMEM; 3788 3789 if (set) 3790 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR); 3791 else 3792 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR); 3793 3794 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3795 if (priv->ap_fw) { 3796 cmd->mbss.mac_type = cpu_to_le16(mac_type); 3797 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN); 3798 } else { 3799 memcpy(cmd->mac_addr, mac, ETH_ALEN); 3800 } 3801 3802 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3803 kfree(cmd); 3804 3805 return rc; 3806} 3807 3808/* 3809 * MWL8K_CMD_SET_MAC_ADDR. 3810 */ 3811static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, 3812 struct ieee80211_vif *vif, u8 *mac) 3813{ 3814 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true); 3815} 3816 3817/* 3818 * MWL8K_CMD_DEL_MAC_ADDR. 3819 */ 3820static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw, 3821 struct ieee80211_vif *vif, u8 *mac) 3822{ 3823 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false); 3824} 3825 3826/* 3827 * CMD_SET_RATEADAPT_MODE. 3828 */ 3829struct mwl8k_cmd_set_rate_adapt_mode { 3830 struct mwl8k_cmd_pkt_hdr header; 3831 __le16 action; 3832 __le16 mode; 3833} __packed; 3834 3835static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode) 3836{ 3837 struct mwl8k_cmd_set_rate_adapt_mode *cmd; 3838 int rc; 3839 3840 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3841 if (cmd == NULL) 3842 return -ENOMEM; 3843 3844 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); 3845 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3846 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3847 cmd->mode = cpu_to_le16(mode); 3848 3849 rc = mwl8k_post_cmd(hw, &cmd->header); 3850 kfree(cmd); 3851 3852 return rc; 3853} 3854 3855/* 3856 * CMD_GET_WATCHDOG_BITMAP. 3857 */ 3858struct mwl8k_cmd_get_watchdog_bitmap { 3859 struct mwl8k_cmd_pkt_hdr header; 3860 u8 bitmap; 3861} __packed; 3862 3863static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap) 3864{ 3865 struct mwl8k_cmd_get_watchdog_bitmap *cmd; 3866 int rc; 3867 3868 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3869 if (cmd == NULL) 3870 return -ENOMEM; 3871 3872 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP); 3873 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3874 3875 rc = mwl8k_post_cmd(hw, &cmd->header); 3876 if (!rc) 3877 *bitmap = cmd->bitmap; 3878 3879 kfree(cmd); 3880 3881 return rc; 3882} 3883 3884#define MWL8K_WMM_QUEUE_NUMBER 3 3885 3886static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 3887 u8 idx); 3888 3889static void mwl8k_watchdog_ba_events(struct work_struct *work) 3890{ 3891 int rc; 3892 u8 bitmap = 0, stream_index; 3893 struct mwl8k_ampdu_stream *streams; 3894 struct mwl8k_priv *priv = 3895 container_of(work, struct mwl8k_priv, watchdog_ba_handle); 3896 struct ieee80211_hw *hw = priv->hw; 3897 int i; 3898 u32 status = 0; 3899 3900 mwl8k_fw_lock(hw); 3901 3902 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap); 3903 if (rc) 3904 goto done; 3905 3906 spin_lock(&priv->stream_lock); 3907 3908 /* the bitmap is the hw queue number. Map it to the ampdu queue. */ 3909 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) { 3910 if (bitmap & (1 << i)) { 3911 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) % 3912 TOTAL_HW_TX_QUEUES; 3913 streams = &priv->ampdu[stream_index]; 3914 if (streams->state == AMPDU_STREAM_ACTIVE) { 3915 ieee80211_stop_tx_ba_session(streams->sta, 3916 streams->tid); 3917 spin_unlock(&priv->stream_lock); 3918 mwl8k_destroy_ba(hw, stream_index); 3919 spin_lock(&priv->stream_lock); 3920 } 3921 } 3922 } 3923 3924 spin_unlock(&priv->stream_lock); 3925done: 3926 atomic_dec(&priv->watchdog_event_pending); 3927 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3928 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG), 3929 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3930 mwl8k_fw_unlock(hw); 3931 return; 3932} 3933 3934 3935/* 3936 * CMD_BSS_START. 3937 */ 3938struct mwl8k_cmd_bss_start { 3939 struct mwl8k_cmd_pkt_hdr header; 3940 __le32 enable; 3941} __packed; 3942 3943static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw, 3944 struct ieee80211_vif *vif, int enable) 3945{ 3946 struct mwl8k_cmd_bss_start *cmd; 3947 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3948 struct mwl8k_priv *priv = hw->priv; 3949 int rc; 3950 3951 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid))) 3952 return 0; 3953 3954 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid))) 3955 return 0; 3956 3957 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3958 if (cmd == NULL) 3959 return -ENOMEM; 3960 3961 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START); 3962 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3963 cmd->enable = cpu_to_le32(enable); 3964 3965 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3966 kfree(cmd); 3967 3968 if (!rc) { 3969 if (enable) 3970 priv->running_bsses |= (1 << mwl8k_vif->macid); 3971 else 3972 priv->running_bsses &= ~(1 << mwl8k_vif->macid); 3973 } 3974 return rc; 3975} 3976 3977static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap) 3978{ 3979 struct mwl8k_priv *priv = hw->priv; 3980 struct mwl8k_vif *mwl8k_vif, *tmp_vif; 3981 struct ieee80211_vif *vif; 3982 3983 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) { 3984 vif = mwl8k_vif->vif; 3985 3986 if (!(bitmap & (1 << mwl8k_vif->macid))) 3987 continue; 3988 3989 if (vif->type == NL80211_IFTYPE_AP) 3990 mwl8k_cmd_bss_start(hw, vif, enable); 3991 } 3992} 3993/* 3994 * CMD_BASTREAM. 3995 */ 3996 3997/* 3998 * UPSTREAM is tx direction 3999 */ 4000#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00 4001#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01 4002 4003enum ba_stream_action_type { 4004 MWL8K_BA_CREATE, 4005 MWL8K_BA_UPDATE, 4006 MWL8K_BA_DESTROY, 4007 MWL8K_BA_FLUSH, 4008 MWL8K_BA_CHECK, 4009}; 4010 4011 4012struct mwl8k_create_ba_stream { 4013 __le32 flags; 4014 __le32 idle_thrs; 4015 __le32 bar_thrs; 4016 __le32 window_size; 4017 u8 peer_mac_addr[6]; 4018 u8 dialog_token; 4019 u8 tid; 4020 u8 queue_id; 4021 u8 param_info; 4022 __le32 ba_context; 4023 u8 reset_seq_no_flag; 4024 __le16 curr_seq_no; 4025 u8 sta_src_mac_addr[6]; 4026} __packed; 4027 4028struct mwl8k_destroy_ba_stream { 4029 __le32 flags; 4030 __le32 ba_context; 4031} __packed; 4032 4033struct mwl8k_cmd_bastream { 4034 struct mwl8k_cmd_pkt_hdr header; 4035 __le32 action; 4036 union { 4037 struct mwl8k_create_ba_stream create_params; 4038 struct mwl8k_destroy_ba_stream destroy_params; 4039 }; 4040} __packed; 4041 4042static int 4043mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 4044 struct ieee80211_vif *vif) 4045{ 4046 struct mwl8k_cmd_bastream *cmd; 4047 int rc; 4048 4049 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4050 if (cmd == NULL) 4051 return -ENOMEM; 4052 4053 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4054 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4055 4056 cmd->action = cpu_to_le32(MWL8K_BA_CHECK); 4057 4058 cmd->create_params.queue_id = stream->idx; 4059 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr, 4060 ETH_ALEN); 4061 cmd->create_params.tid = stream->tid; 4062 4063 cmd->create_params.flags = 4064 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) | 4065 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM); 4066 4067 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4068 4069 kfree(cmd); 4070 4071 return rc; 4072} 4073 4074static int 4075mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 4076 u8 buf_size, struct ieee80211_vif *vif) 4077{ 4078 struct mwl8k_cmd_bastream *cmd; 4079 int rc; 4080 4081 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4082 if (cmd == NULL) 4083 return -ENOMEM; 4084 4085 4086 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4087 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4088 4089 cmd->action = cpu_to_le32(MWL8K_BA_CREATE); 4090 4091 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size); 4092 cmd->create_params.window_size = cpu_to_le32((u32)buf_size); 4093 cmd->create_params.queue_id = stream->idx; 4094 4095 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN); 4096 cmd->create_params.tid = stream->tid; 4097 cmd->create_params.curr_seq_no = cpu_to_le16(0); 4098 cmd->create_params.reset_seq_no_flag = 1; 4099 4100 cmd->create_params.param_info = 4101 (stream->sta->deflink.ht_cap.ampdu_factor & 4102 IEEE80211_HT_AMPDU_PARM_FACTOR) | 4103 ((stream->sta->deflink.ht_cap.ampdu_density << 2) & 4104 IEEE80211_HT_AMPDU_PARM_DENSITY); 4105 4106 cmd->create_params.flags = 4107 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE | 4108 BASTREAM_FLAG_DIRECTION_UPSTREAM); 4109 4110 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4111 4112 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n", 4113 stream->sta->addr, stream->tid); 4114 kfree(cmd); 4115 4116 return rc; 4117} 4118 4119static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 4120 u8 idx) 4121{ 4122 struct mwl8k_cmd_bastream *cmd; 4123 4124 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4125 if (cmd == NULL) 4126 return; 4127 4128 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4129 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4130 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY); 4131 4132 cmd->destroy_params.ba_context = cpu_to_le32(idx); 4133 mwl8k_post_cmd(hw, &cmd->header); 4134 4135 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx); 4136 4137 kfree(cmd); 4138} 4139 4140/* 4141 * CMD_SET_NEW_STN. 4142 */ 4143struct mwl8k_cmd_set_new_stn { 4144 struct mwl8k_cmd_pkt_hdr header; 4145 __le16 aid; 4146 __u8 mac_addr[6]; 4147 __le16 stn_id; 4148 __le16 action; 4149 __le16 rsvd; 4150 __le32 legacy_rates; 4151 __u8 ht_rates[4]; 4152 __le16 cap_info; 4153 __le16 ht_capabilities_info; 4154 __u8 mac_ht_param_info; 4155 __u8 rev; 4156 __u8 control_channel; 4157 __u8 add_channel; 4158 __le16 op_mode; 4159 __le16 stbc; 4160 __u8 add_qos_info; 4161 __u8 is_qos_sta; 4162 __le32 fw_sta_ptr; 4163} __packed; 4164 4165#define MWL8K_STA_ACTION_ADD 0 4166#define MWL8K_STA_ACTION_REMOVE 2 4167 4168static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw, 4169 struct ieee80211_vif *vif, 4170 struct ieee80211_sta *sta) 4171{ 4172 struct mwl8k_cmd_set_new_stn *cmd; 4173 u32 rates; 4174 int rc; 4175 4176 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4177 if (cmd == NULL) 4178 return -ENOMEM; 4179 4180 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4181 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4182 cmd->aid = cpu_to_le16(sta->aid); 4183 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN); 4184 cmd->stn_id = cpu_to_le16(sta->aid); 4185 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD); 4186 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4187 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ]; 4188 else 4189 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5; 4190 cmd->legacy_rates = cpu_to_le32(rates); 4191 if (sta->deflink.ht_cap.ht_supported) { 4192 cmd->ht_rates[0] = sta->deflink.ht_cap.mcs.rx_mask[0]; 4193 cmd->ht_rates[1] = sta->deflink.ht_cap.mcs.rx_mask[1]; 4194 cmd->ht_rates[2] = sta->deflink.ht_cap.mcs.rx_mask[2]; 4195 cmd->ht_rates[3] = sta->deflink.ht_cap.mcs.rx_mask[3]; 4196 cmd->ht_capabilities_info = cpu_to_le16(sta->deflink.ht_cap.cap); 4197 cmd->mac_ht_param_info = (sta->deflink.ht_cap.ampdu_factor & 3) | 4198 ((sta->deflink.ht_cap.ampdu_density & 7) << 2); 4199 cmd->is_qos_sta = 1; 4200 } 4201 4202 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4203 kfree(cmd); 4204 4205 return rc; 4206} 4207 4208static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw, 4209 struct ieee80211_vif *vif) 4210{ 4211 struct mwl8k_cmd_set_new_stn *cmd; 4212 int rc; 4213 4214 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4215 if (cmd == NULL) 4216 return -ENOMEM; 4217 4218 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4219 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4220 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN); 4221 4222 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4223 kfree(cmd); 4224 4225 return rc; 4226} 4227 4228static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw, 4229 struct ieee80211_vif *vif, u8 *addr) 4230{ 4231 struct mwl8k_cmd_set_new_stn *cmd; 4232 struct mwl8k_priv *priv = hw->priv; 4233 int rc, i; 4234 u8 idx; 4235 4236 spin_lock(&priv->stream_lock); 4237 /* Destroy any active ampdu streams for this sta */ 4238 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 4239 struct mwl8k_ampdu_stream *s; 4240 s = &priv->ampdu[i]; 4241 if (s->state != AMPDU_NO_STREAM) { 4242 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) { 4243 if (s->state == AMPDU_STREAM_ACTIVE) { 4244 idx = s->idx; 4245 spin_unlock(&priv->stream_lock); 4246 mwl8k_destroy_ba(hw, idx); 4247 spin_lock(&priv->stream_lock); 4248 } else if (s->state == AMPDU_STREAM_NEW) { 4249 mwl8k_remove_stream(hw, s); 4250 } 4251 } 4252 } 4253 } 4254 4255 spin_unlock(&priv->stream_lock); 4256 4257 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4258 if (cmd == NULL) 4259 return -ENOMEM; 4260 4261 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4262 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4263 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4264 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE); 4265 4266 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4267 kfree(cmd); 4268 4269 return rc; 4270} 4271 4272/* 4273 * CMD_UPDATE_ENCRYPTION. 4274 */ 4275 4276#define MAX_ENCR_KEY_LENGTH 16 4277#define MIC_KEY_LENGTH 8 4278 4279struct mwl8k_cmd_update_encryption { 4280 struct mwl8k_cmd_pkt_hdr header; 4281 4282 __le32 action; 4283 __le32 reserved; 4284 __u8 mac_addr[6]; 4285 __u8 encr_type; 4286 4287} __packed; 4288 4289struct mwl8k_cmd_set_key { 4290 struct mwl8k_cmd_pkt_hdr header; 4291 4292 __le32 action; 4293 __le32 reserved; 4294 __le16 length; 4295 __le16 key_type_id; 4296 __le32 key_info; 4297 __le32 key_id; 4298 __le16 key_len; 4299 struct { 4300 __u8 key_material[MAX_ENCR_KEY_LENGTH]; 4301 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH]; 4302 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH]; 4303 } tkip; 4304 __le16 tkip_rsc_low; 4305 __le32 tkip_rsc_high; 4306 __le16 tkip_tsc_low; 4307 __le32 tkip_tsc_high; 4308 __u8 mac_addr[6]; 4309} __packed; 4310 4311enum { 4312 MWL8K_ENCR_ENABLE, 4313 MWL8K_ENCR_SET_KEY, 4314 MWL8K_ENCR_REMOVE_KEY, 4315 MWL8K_ENCR_SET_GROUP_KEY, 4316}; 4317 4318#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0 4319#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1 4320#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4 4321#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7 4322#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8 4323 4324enum { 4325 MWL8K_ALG_WEP, 4326 MWL8K_ALG_TKIP, 4327 MWL8K_ALG_CCMP, 4328}; 4329 4330#define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004 4331#define MWL8K_KEY_FLAG_PAIRWISE 0x00000008 4332#define MWL8K_KEY_FLAG_TSC_VALID 0x00000040 4333#define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000 4334#define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000 4335 4336static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw, 4337 struct ieee80211_vif *vif, 4338 u8 *addr, 4339 u8 encr_type) 4340{ 4341 struct mwl8k_cmd_update_encryption *cmd; 4342 int rc; 4343 4344 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4345 if (cmd == NULL) 4346 return -ENOMEM; 4347 4348 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4349 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4350 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE); 4351 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4352 cmd->encr_type = encr_type; 4353 4354 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4355 kfree(cmd); 4356 4357 return rc; 4358} 4359 4360static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd, 4361 u8 *addr, 4362 struct ieee80211_key_conf *key) 4363{ 4364 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4365 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4366 cmd->length = cpu_to_le16(sizeof(*cmd) - 4367 offsetof(struct mwl8k_cmd_set_key, length)); 4368 cmd->key_id = cpu_to_le32(key->keyidx); 4369 cmd->key_len = cpu_to_le16(key->keylen); 4370 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4371 4372 switch (key->cipher) { 4373 case WLAN_CIPHER_SUITE_WEP40: 4374 case WLAN_CIPHER_SUITE_WEP104: 4375 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP); 4376 if (key->keyidx == 0) 4377 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY); 4378 4379 break; 4380 case WLAN_CIPHER_SUITE_TKIP: 4381 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP); 4382 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4383 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4384 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4385 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID 4386 | MWL8K_KEY_FLAG_TSC_VALID); 4387 break; 4388 case WLAN_CIPHER_SUITE_CCMP: 4389 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP); 4390 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4391 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4392 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4393 break; 4394 default: 4395 return -ENOTSUPP; 4396 } 4397 4398 return 0; 4399} 4400 4401static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw, 4402 struct ieee80211_vif *vif, 4403 u8 *addr, 4404 struct ieee80211_key_conf *key) 4405{ 4406 struct mwl8k_cmd_set_key *cmd; 4407 int rc; 4408 int keymlen; 4409 u32 action; 4410 u8 idx; 4411 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4412 4413 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4414 if (cmd == NULL) 4415 return -ENOMEM; 4416 4417 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4418 if (rc < 0) 4419 goto done; 4420 4421 idx = key->keyidx; 4422 4423 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4424 action = MWL8K_ENCR_SET_KEY; 4425 else 4426 action = MWL8K_ENCR_SET_GROUP_KEY; 4427 4428 switch (key->cipher) { 4429 case WLAN_CIPHER_SUITE_WEP40: 4430 case WLAN_CIPHER_SUITE_WEP104: 4431 if (!mwl8k_vif->wep_key_conf[idx].enabled) { 4432 memcpy(mwl8k_vif->wep_key_conf[idx].key, key, 4433 sizeof(*key) + key->keylen); 4434 mwl8k_vif->wep_key_conf[idx].enabled = 1; 4435 } 4436 4437 keymlen = key->keylen; 4438 action = MWL8K_ENCR_SET_KEY; 4439 break; 4440 case WLAN_CIPHER_SUITE_TKIP: 4441 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH; 4442 break; 4443 case WLAN_CIPHER_SUITE_CCMP: 4444 keymlen = key->keylen; 4445 break; 4446 default: 4447 rc = -ENOTSUPP; 4448 goto done; 4449 } 4450 4451 memcpy(&cmd->tkip, key->key, keymlen); 4452 cmd->action = cpu_to_le32(action); 4453 4454 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4455done: 4456 kfree(cmd); 4457 4458 return rc; 4459} 4460 4461static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw, 4462 struct ieee80211_vif *vif, 4463 u8 *addr, 4464 struct ieee80211_key_conf *key) 4465{ 4466 struct mwl8k_cmd_set_key *cmd; 4467 int rc; 4468 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4469 4470 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4471 if (cmd == NULL) 4472 return -ENOMEM; 4473 4474 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4475 if (rc < 0) 4476 goto done; 4477 4478 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || 4479 key->cipher == WLAN_CIPHER_SUITE_WEP104) 4480 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0; 4481 4482 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY); 4483 4484 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4485done: 4486 kfree(cmd); 4487 4488 return rc; 4489} 4490 4491static int mwl8k_set_key(struct ieee80211_hw *hw, 4492 enum set_key_cmd cmd_param, 4493 struct ieee80211_vif *vif, 4494 struct ieee80211_sta *sta, 4495 struct ieee80211_key_conf *key) 4496{ 4497 int rc = 0; 4498 u8 encr_type; 4499 u8 *addr; 4500 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4501 struct mwl8k_priv *priv = hw->priv; 4502 4503 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw) 4504 return -EOPNOTSUPP; 4505 4506 if (sta == NULL) 4507 addr = vif->addr; 4508 else 4509 addr = sta->addr; 4510 4511 if (cmd_param == SET_KEY) { 4512 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key); 4513 if (rc) 4514 goto out; 4515 4516 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40) 4517 || (key->cipher == WLAN_CIPHER_SUITE_WEP104)) 4518 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP; 4519 else 4520 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED; 4521 4522 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr, 4523 encr_type); 4524 if (rc) 4525 goto out; 4526 4527 mwl8k_vif->is_hw_crypto_enabled = true; 4528 4529 } else { 4530 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key); 4531 4532 if (rc) 4533 goto out; 4534 } 4535out: 4536 return rc; 4537} 4538 4539/* 4540 * CMD_UPDATE_STADB. 4541 */ 4542struct ewc_ht_info { 4543 __le16 control1; 4544 __le16 control2; 4545 __le16 control3; 4546} __packed; 4547 4548struct peer_capability_info { 4549 /* Peer type - AP vs. STA. */ 4550 __u8 peer_type; 4551 4552 /* Basic 802.11 capabilities from assoc resp. */ 4553 __le16 basic_caps; 4554 4555 /* Set if peer supports 802.11n high throughput (HT). */ 4556 __u8 ht_support; 4557 4558 /* Valid if HT is supported. */ 4559 __le16 ht_caps; 4560 __u8 extended_ht_caps; 4561 struct ewc_ht_info ewc_info; 4562 4563 /* Legacy rate table. Intersection of our rates and peer rates. */ 4564 __u8 legacy_rates[12]; 4565 4566 /* HT rate table. Intersection of our rates and peer rates. */ 4567 __u8 ht_rates[16]; 4568 __u8 pad[16]; 4569 4570 /* If set, interoperability mode, no proprietary extensions. */ 4571 __u8 interop; 4572 __u8 pad2; 4573 __u8 station_id; 4574 __le16 amsdu_enabled; 4575} __packed; 4576 4577struct mwl8k_cmd_update_stadb { 4578 struct mwl8k_cmd_pkt_hdr header; 4579 4580 /* See STADB_ACTION_TYPE */ 4581 __le32 action; 4582 4583 /* Peer MAC address */ 4584 __u8 peer_addr[ETH_ALEN]; 4585 4586 __le32 reserved; 4587 4588 /* Peer info - valid during add/update. */ 4589 struct peer_capability_info peer_info; 4590} __packed; 4591 4592#define MWL8K_STA_DB_MODIFY_ENTRY 1 4593#define MWL8K_STA_DB_DEL_ENTRY 2 4594 4595/* Peer Entry flags - used to define the type of the peer node */ 4596#define MWL8K_PEER_TYPE_ACCESSPOINT 2 4597 4598static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw, 4599 struct ieee80211_vif *vif, 4600 struct ieee80211_sta *sta) 4601{ 4602 struct mwl8k_cmd_update_stadb *cmd; 4603 struct peer_capability_info *p; 4604 u32 rates; 4605 int rc; 4606 4607 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4608 if (cmd == NULL) 4609 return -ENOMEM; 4610 4611 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4612 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4613 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY); 4614 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN); 4615 4616 p = &cmd->peer_info; 4617 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; 4618 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability); 4619 p->ht_support = sta->deflink.ht_cap.ht_supported; 4620 p->ht_caps = cpu_to_le16(sta->deflink.ht_cap.cap); 4621 p->extended_ht_caps = (sta->deflink.ht_cap.ampdu_factor & 3) | 4622 ((sta->deflink.ht_cap.ampdu_density & 7) << 2); 4623 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4624 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ]; 4625 else 4626 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5; 4627 legacy_rate_mask_to_array(p->legacy_rates, rates); 4628 memcpy(p->ht_rates, &sta->deflink.ht_cap.mcs, 16); 4629 p->interop = 1; 4630 p->amsdu_enabled = 0; 4631 4632 rc = mwl8k_post_cmd(hw, &cmd->header); 4633 if (!rc) 4634 rc = p->station_id; 4635 kfree(cmd); 4636 4637 return rc; 4638} 4639 4640static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw, 4641 struct ieee80211_vif *vif, u8 *addr) 4642{ 4643 struct mwl8k_cmd_update_stadb *cmd; 4644 int rc; 4645 4646 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4647 if (cmd == NULL) 4648 return -ENOMEM; 4649 4650 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4651 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4652 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY); 4653 memcpy(cmd->peer_addr, addr, ETH_ALEN); 4654 4655 rc = mwl8k_post_cmd(hw, &cmd->header); 4656 kfree(cmd); 4657 4658 return rc; 4659} 4660 4661 4662/* 4663 * Interrupt handling. 4664 */ 4665static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) 4666{ 4667 struct ieee80211_hw *hw = dev_id; 4668 struct mwl8k_priv *priv = hw->priv; 4669 u32 status; 4670 4671 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4672 if (!status) 4673 return IRQ_NONE; 4674 4675 if (status & MWL8K_A2H_INT_TX_DONE) { 4676 status &= ~MWL8K_A2H_INT_TX_DONE; 4677 tasklet_schedule(&priv->poll_tx_task); 4678 } 4679 4680 if (status & MWL8K_A2H_INT_RX_READY) { 4681 status &= ~MWL8K_A2H_INT_RX_READY; 4682 tasklet_schedule(&priv->poll_rx_task); 4683 } 4684 4685 if (status & MWL8K_A2H_INT_BA_WATCHDOG) { 4686 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG, 4687 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4688 4689 atomic_inc(&priv->watchdog_event_pending); 4690 status &= ~MWL8K_A2H_INT_BA_WATCHDOG; 4691 ieee80211_queue_work(hw, &priv->watchdog_ba_handle); 4692 } 4693 4694 if (status) 4695 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4696 4697 if (status & MWL8K_A2H_INT_OPC_DONE) { 4698 if (priv->hostcmd_wait != NULL) 4699 complete(priv->hostcmd_wait); 4700 } 4701 4702 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { 4703 if (!mutex_is_locked(&priv->fw_mutex) && 4704 priv->radio_on && priv->pending_tx_pkts) 4705 mwl8k_tx_start(priv); 4706 } 4707 4708 return IRQ_HANDLED; 4709} 4710 4711static void mwl8k_tx_poll(struct tasklet_struct *t) 4712{ 4713 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_tx_task); 4714 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev); 4715 int limit; 4716 int i; 4717 4718 limit = 32; 4719 4720 spin_lock(&priv->tx_lock); 4721 4722 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4723 limit -= mwl8k_txq_reclaim(hw, i, limit, 0); 4724 4725 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) { 4726 complete(priv->tx_wait); 4727 priv->tx_wait = NULL; 4728 } 4729 4730 spin_unlock(&priv->tx_lock); 4731 4732 if (limit) { 4733 writel(~MWL8K_A2H_INT_TX_DONE, 4734 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4735 } else { 4736 tasklet_schedule(&priv->poll_tx_task); 4737 } 4738} 4739 4740static void mwl8k_rx_poll(struct tasklet_struct *t) 4741{ 4742 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_rx_task); 4743 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev); 4744 int limit; 4745 4746 limit = 32; 4747 limit -= rxq_process(hw, 0, limit); 4748 limit -= rxq_refill(hw, 0, limit); 4749 4750 if (limit) { 4751 writel(~MWL8K_A2H_INT_RX_READY, 4752 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4753 } else { 4754 tasklet_schedule(&priv->poll_rx_task); 4755 } 4756} 4757 4758 4759/* 4760 * Core driver operations. 4761 */ 4762static void mwl8k_tx(struct ieee80211_hw *hw, 4763 struct ieee80211_tx_control *control, 4764 struct sk_buff *skb) 4765{ 4766 struct mwl8k_priv *priv = hw->priv; 4767 int index = skb_get_queue_mapping(skb); 4768 4769 if (!priv->radio_on) { 4770 wiphy_debug(hw->wiphy, 4771 "dropped TX frame since radio disabled\n"); 4772 dev_kfree_skb(skb); 4773 return; 4774 } 4775 4776 mwl8k_txq_xmit(hw, index, control->sta, skb); 4777} 4778 4779static int mwl8k_start(struct ieee80211_hw *hw) 4780{ 4781 struct mwl8k_priv *priv = hw->priv; 4782 int rc; 4783 4784 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 4785 IRQF_SHARED, MWL8K_NAME, hw); 4786 if (rc) { 4787 priv->irq = -1; 4788 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 4789 return -EIO; 4790 } 4791 priv->irq = priv->pdev->irq; 4792 4793 /* Enable TX reclaim and RX tasklets. */ 4794 tasklet_enable(&priv->poll_tx_task); 4795 tasklet_enable(&priv->poll_rx_task); 4796 4797 /* Enable interrupts */ 4798 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4799 iowrite32(MWL8K_A2H_EVENTS, 4800 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4801 4802 rc = mwl8k_fw_lock(hw); 4803 if (!rc) { 4804 rc = mwl8k_cmd_radio_enable(hw); 4805 4806 if (!priv->ap_fw) { 4807 if (!rc) 4808 rc = mwl8k_cmd_enable_sniffer(hw, 0); 4809 4810 if (!rc) 4811 rc = mwl8k_cmd_set_pre_scan(hw); 4812 4813 if (!rc) 4814 rc = mwl8k_cmd_set_post_scan(hw, 4815 "\x00\x00\x00\x00\x00\x00"); 4816 } 4817 4818 if (!rc) 4819 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0); 4820 4821 if (!rc) 4822 rc = mwl8k_cmd_set_wmm_mode(hw, 0); 4823 4824 mwl8k_fw_unlock(hw); 4825 } 4826 4827 if (rc) { 4828 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4829 free_irq(priv->pdev->irq, hw); 4830 priv->irq = -1; 4831 tasklet_disable(&priv->poll_tx_task); 4832 tasklet_disable(&priv->poll_rx_task); 4833 } else { 4834 ieee80211_wake_queues(hw); 4835 } 4836 4837 return rc; 4838} 4839 4840static void mwl8k_stop(struct ieee80211_hw *hw, bool suspend) 4841{ 4842 struct mwl8k_priv *priv = hw->priv; 4843 int i; 4844 4845 if (!priv->hw_restart_in_progress) 4846 mwl8k_cmd_radio_disable(hw); 4847 4848 ieee80211_stop_queues(hw); 4849 4850 /* Disable interrupts */ 4851 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4852 if (priv->irq != -1) { 4853 free_irq(priv->pdev->irq, hw); 4854 priv->irq = -1; 4855 } 4856 4857 /* Stop finalize join worker */ 4858 cancel_work_sync(&priv->finalize_join_worker); 4859 cancel_work_sync(&priv->watchdog_ba_handle); 4860 if (priv->beacon_skb != NULL) 4861 dev_kfree_skb(priv->beacon_skb); 4862 4863 /* Stop TX reclaim and RX tasklets. */ 4864 tasklet_disable(&priv->poll_tx_task); 4865 tasklet_disable(&priv->poll_rx_task); 4866 4867 /* Return all skbs to mac80211 */ 4868 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4869 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 4870} 4871 4872static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image); 4873 4874static int mwl8k_add_interface(struct ieee80211_hw *hw, 4875 struct ieee80211_vif *vif) 4876{ 4877 struct mwl8k_priv *priv = hw->priv; 4878 struct mwl8k_vif *mwl8k_vif; 4879 u32 macids_supported; 4880 int macid, rc; 4881 struct mwl8k_device_info *di; 4882 4883 /* 4884 * Reject interface creation if sniffer mode is active, as 4885 * STA operation is mutually exclusive with hardware sniffer 4886 * mode. (Sniffer mode is only used on STA firmware.) 4887 */ 4888 if (priv->sniffer_enabled) { 4889 wiphy_info(hw->wiphy, 4890 "unable to create STA interface because sniffer mode is enabled\n"); 4891 return -EINVAL; 4892 } 4893 4894 di = priv->device_info; 4895 switch (vif->type) { 4896 case NL80211_IFTYPE_AP: 4897 if (!priv->ap_fw && di->fw_image_ap) { 4898 /* we must load the ap fw to meet this request */ 4899 if (!list_empty(&priv->vif_list)) 4900 return -EBUSY; 4901 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4902 if (rc) 4903 return rc; 4904 } 4905 macids_supported = priv->ap_macids_supported; 4906 break; 4907 case NL80211_IFTYPE_STATION: 4908 if (priv->ap_fw && di->fw_image_sta) { 4909 if (!list_empty(&priv->vif_list)) { 4910 wiphy_warn(hw->wiphy, "AP interface is running.\n" 4911 "Adding STA interface for WDS"); 4912 } else { 4913 /* we must load the sta fw to 4914 * meet this request. 4915 */ 4916 rc = mwl8k_reload_firmware(hw, 4917 di->fw_image_sta); 4918 if (rc) 4919 return rc; 4920 } 4921 } 4922 macids_supported = priv->sta_macids_supported; 4923 break; 4924 default: 4925 return -EINVAL; 4926 } 4927 4928 macid = ffs(macids_supported & ~priv->macids_used); 4929 if (!macid--) 4930 return -EBUSY; 4931 4932 /* Setup driver private area. */ 4933 mwl8k_vif = MWL8K_VIF(vif); 4934 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); 4935 mwl8k_vif->vif = vif; 4936 mwl8k_vif->macid = macid; 4937 mwl8k_vif->seqno = 0; 4938 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN); 4939 mwl8k_vif->is_hw_crypto_enabled = false; 4940 4941 /* Set the mac address. */ 4942 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr); 4943 4944 if (vif->type == NL80211_IFTYPE_AP) 4945 mwl8k_cmd_set_new_stn_add_self(hw, vif); 4946 4947 priv->macids_used |= 1 << mwl8k_vif->macid; 4948 list_add_tail(&mwl8k_vif->list, &priv->vif_list); 4949 4950 return 0; 4951} 4952 4953static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif) 4954{ 4955 /* Has ieee80211_restart_hw re-added the removed interfaces? */ 4956 if (!priv->macids_used) 4957 return; 4958 4959 priv->macids_used &= ~(1 << vif->macid); 4960 list_del(&vif->list); 4961} 4962 4963static void mwl8k_remove_interface(struct ieee80211_hw *hw, 4964 struct ieee80211_vif *vif) 4965{ 4966 struct mwl8k_priv *priv = hw->priv; 4967 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4968 4969 if (vif->type == NL80211_IFTYPE_AP) 4970 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr); 4971 4972 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr); 4973 4974 mwl8k_remove_vif(priv, mwl8k_vif); 4975} 4976 4977static void mwl8k_hw_restart_work(struct work_struct *work) 4978{ 4979 struct mwl8k_priv *priv = 4980 container_of(work, struct mwl8k_priv, fw_reload); 4981 struct ieee80211_hw *hw = priv->hw; 4982 struct mwl8k_device_info *di; 4983 int rc; 4984 4985 /* If some command is waiting for a response, clear it */ 4986 if (priv->hostcmd_wait != NULL) { 4987 complete(priv->hostcmd_wait); 4988 priv->hostcmd_wait = NULL; 4989 } 4990 4991 priv->hw_restart_owner = current; 4992 di = priv->device_info; 4993 mwl8k_fw_lock(hw); 4994 4995 if (priv->ap_fw) 4996 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4997 else 4998 rc = mwl8k_reload_firmware(hw, di->fw_image_sta); 4999 5000 if (rc) 5001 goto fail; 5002 5003 priv->hw_restart_owner = NULL; 5004 priv->hw_restart_in_progress = false; 5005 5006 /* 5007 * This unlock will wake up the queues and 5008 * also opens the command path for other 5009 * commands 5010 */ 5011 mwl8k_fw_unlock(hw); 5012 5013 ieee80211_restart_hw(hw); 5014 5015 wiphy_err(hw->wiphy, "Firmware restarted successfully\n"); 5016 5017 return; 5018fail: 5019 mwl8k_fw_unlock(hw); 5020 5021 wiphy_err(hw->wiphy, "Firmware restart failed\n"); 5022} 5023 5024static int mwl8k_config(struct ieee80211_hw *hw, int radio_idx, u32 changed) 5025{ 5026 struct ieee80211_conf *conf = &hw->conf; 5027 struct mwl8k_priv *priv = hw->priv; 5028 int rc; 5029 5030 rc = mwl8k_fw_lock(hw); 5031 if (rc) 5032 return rc; 5033 5034 if (conf->flags & IEEE80211_CONF_IDLE) 5035 rc = mwl8k_cmd_radio_disable(hw); 5036 else 5037 rc = mwl8k_cmd_radio_enable(hw); 5038 if (rc) 5039 goto out; 5040 5041 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 5042 rc = mwl8k_cmd_set_rf_channel(hw, conf); 5043 if (rc) 5044 goto out; 5045 } 5046 5047 if (conf->power_level > 18) 5048 conf->power_level = 18; 5049 5050 if (priv->ap_fw) { 5051 5052 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) { 5053 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level); 5054 if (rc) 5055 goto out; 5056 } 5057 5058 5059 } else { 5060 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level); 5061 if (rc) 5062 goto out; 5063 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7); 5064 } 5065 5066out: 5067 mwl8k_fw_unlock(hw); 5068 5069 return rc; 5070} 5071 5072static void 5073mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5074 struct ieee80211_bss_conf *info, u32 changed) 5075{ 5076 struct mwl8k_priv *priv = hw->priv; 5077 u32 ap_legacy_rates = 0; 5078 u8 ap_mcs_rates[16]; 5079 int rc; 5080 5081 if (mwl8k_fw_lock(hw)) 5082 return; 5083 5084 /* 5085 * No need to capture a beacon if we're no longer associated. 5086 */ 5087 if ((changed & BSS_CHANGED_ASSOC) && !vif->cfg.assoc) 5088 priv->capture_beacon = false; 5089 5090 /* 5091 * Get the AP's legacy and MCS rates. 5092 */ 5093 if (vif->cfg.assoc) { 5094 struct ieee80211_sta *ap; 5095 5096 rcu_read_lock(); 5097 5098 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid); 5099 if (ap == NULL) { 5100 rcu_read_unlock(); 5101 goto out; 5102 } 5103 5104 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) { 5105 ap_legacy_rates = ap->deflink.supp_rates[NL80211_BAND_2GHZ]; 5106 } else { 5107 ap_legacy_rates = 5108 ap->deflink.supp_rates[NL80211_BAND_5GHZ] << 5; 5109 } 5110 memcpy(ap_mcs_rates, &ap->deflink.ht_cap.mcs, 16); 5111 5112 rcu_read_unlock(); 5113 5114 if (changed & BSS_CHANGED_ASSOC) { 5115 if (!priv->ap_fw) { 5116 rc = mwl8k_cmd_set_rate(hw, vif, 5117 ap_legacy_rates, 5118 ap_mcs_rates); 5119 if (rc) 5120 goto out; 5121 5122 rc = mwl8k_cmd_use_fixed_rate_sta(hw); 5123 if (rc) 5124 goto out; 5125 } else { 5126 int idx; 5127 int rate; 5128 5129 /* Use AP firmware specific rate command. 5130 */ 5131 idx = ffs(vif->bss_conf.basic_rates); 5132 if (idx) 5133 idx--; 5134 5135 if (hw->conf.chandef.chan->band == 5136 NL80211_BAND_2GHZ) 5137 rate = mwl8k_rates_24[idx].hw_value; 5138 else 5139 rate = mwl8k_rates_50[idx].hw_value; 5140 5141 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5142 } 5143 } 5144 } 5145 5146 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5147 rc = mwl8k_set_radio_preamble(hw, 5148 vif->bss_conf.use_short_preamble); 5149 if (rc) 5150 goto out; 5151 } 5152 5153 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) { 5154 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot); 5155 if (rc) 5156 goto out; 5157 } 5158 5159 if (vif->cfg.assoc && !priv->ap_fw && 5160 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT | 5161 BSS_CHANGED_HT))) { 5162 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates); 5163 if (rc) 5164 goto out; 5165 } 5166 5167 if (vif->cfg.assoc && 5168 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) { 5169 /* 5170 * Finalize the join. Tell rx handler to process 5171 * next beacon from our BSSID. 5172 */ 5173 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN); 5174 priv->capture_beacon = true; 5175 } 5176 5177out: 5178 mwl8k_fw_unlock(hw); 5179} 5180 5181static void 5182mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5183 struct ieee80211_bss_conf *info, u32 changed) 5184{ 5185 int rc; 5186 5187 if (mwl8k_fw_lock(hw)) 5188 return; 5189 5190 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5191 rc = mwl8k_set_radio_preamble(hw, 5192 vif->bss_conf.use_short_preamble); 5193 if (rc) 5194 goto out; 5195 } 5196 5197 if (changed & BSS_CHANGED_BASIC_RATES) { 5198 int idx; 5199 int rate; 5200 5201 /* 5202 * Use lowest supported basic rate for multicasts 5203 * and management frames (such as probe responses -- 5204 * beacons will always go out at 1 Mb/s). 5205 */ 5206 idx = ffs(vif->bss_conf.basic_rates); 5207 if (idx) 5208 idx--; 5209 5210 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 5211 rate = mwl8k_rates_24[idx].hw_value; 5212 else 5213 rate = mwl8k_rates_50[idx].hw_value; 5214 5215 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5216 } 5217 5218 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) { 5219 struct sk_buff *skb; 5220 5221 skb = ieee80211_beacon_get(hw, vif, 0); 5222 if (skb != NULL) { 5223 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len); 5224 kfree_skb(skb); 5225 } 5226 } 5227 5228 if (changed & BSS_CHANGED_BEACON_ENABLED) 5229 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon); 5230 5231out: 5232 mwl8k_fw_unlock(hw); 5233} 5234 5235static void 5236mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5237 struct ieee80211_bss_conf *info, u64 changed) 5238{ 5239 if (vif->type == NL80211_IFTYPE_STATION) 5240 mwl8k_bss_info_changed_sta(hw, vif, info, changed); 5241 if (vif->type == NL80211_IFTYPE_AP) 5242 mwl8k_bss_info_changed_ap(hw, vif, info, changed); 5243} 5244 5245static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw, 5246 struct netdev_hw_addr_list *mc_list) 5247{ 5248 struct mwl8k_cmd_pkt_hdr *cmd; 5249 5250 /* 5251 * Synthesize and return a command packet that programs the 5252 * hardware multicast address filter. At this point we don't 5253 * know whether FIF_ALLMULTI is being requested, but if it is, 5254 * we'll end up throwing this packet away and creating a new 5255 * one in mwl8k_configure_filter(). 5256 */ 5257 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list); 5258 5259 return (unsigned long)cmd; 5260} 5261 5262static int 5263mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw, 5264 unsigned int changed_flags, 5265 unsigned int *total_flags) 5266{ 5267 struct mwl8k_priv *priv = hw->priv; 5268 5269 /* 5270 * Hardware sniffer mode is mutually exclusive with STA 5271 * operation, so refuse to enable sniffer mode if a STA 5272 * interface is active. 5273 */ 5274 if (!list_empty(&priv->vif_list)) { 5275 if (net_ratelimit()) 5276 wiphy_info(hw->wiphy, 5277 "not enabling sniffer mode because STA interface is active\n"); 5278 return 0; 5279 } 5280 5281 if (!priv->sniffer_enabled) { 5282 if (mwl8k_cmd_enable_sniffer(hw, 1)) 5283 return 0; 5284 priv->sniffer_enabled = true; 5285 } 5286 5287 *total_flags &= FIF_ALLMULTI | 5288 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL | 5289 FIF_OTHER_BSS; 5290 5291 return 1; 5292} 5293 5294static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv) 5295{ 5296 if (!list_empty(&priv->vif_list)) 5297 return list_entry(priv->vif_list.next, struct mwl8k_vif, list); 5298 5299 return NULL; 5300} 5301 5302static void mwl8k_configure_filter(struct ieee80211_hw *hw, 5303 unsigned int changed_flags, 5304 unsigned int *total_flags, 5305 u64 multicast) 5306{ 5307 struct mwl8k_priv *priv = hw->priv; 5308 struct mwl8k_cmd_pkt_hdr *cmd = (void *)(unsigned long)multicast; 5309 5310 /* 5311 * AP firmware doesn't allow fine-grained control over 5312 * the receive filter. 5313 */ 5314 if (priv->ap_fw) { 5315 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5316 kfree(cmd); 5317 return; 5318 } 5319 5320 /* 5321 * Enable hardware sniffer mode if FIF_CONTROL or 5322 * FIF_OTHER_BSS is requested. 5323 */ 5324 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) && 5325 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) { 5326 kfree(cmd); 5327 return; 5328 } 5329 5330 /* Clear unsupported feature flags */ 5331 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5332 5333 if (mwl8k_fw_lock(hw)) { 5334 kfree(cmd); 5335 return; 5336 } 5337 5338 if (priv->sniffer_enabled) { 5339 mwl8k_cmd_enable_sniffer(hw, 0); 5340 priv->sniffer_enabled = false; 5341 } 5342 5343 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { 5344 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) { 5345 /* 5346 * Disable the BSS filter. 5347 */ 5348 mwl8k_cmd_set_pre_scan(hw); 5349 } else { 5350 struct mwl8k_vif *mwl8k_vif; 5351 const u8 *bssid; 5352 5353 /* 5354 * Enable the BSS filter. 5355 * 5356 * If there is an active STA interface, use that 5357 * interface's BSSID, otherwise use a dummy one 5358 * (where the OUI part needs to be nonzero for 5359 * the BSSID to be accepted by POST_SCAN). 5360 */ 5361 mwl8k_vif = mwl8k_first_vif(priv); 5362 if (mwl8k_vif != NULL) 5363 bssid = mwl8k_vif->vif->bss_conf.bssid; 5364 else 5365 bssid = "\x01\x00\x00\x00\x00\x00"; 5366 5367 mwl8k_cmd_set_post_scan(hw, bssid); 5368 } 5369 } 5370 5371 /* 5372 * If FIF_ALLMULTI is being requested, throw away the command 5373 * packet that ->prepare_multicast() built and replace it with 5374 * a command packet that enables reception of all multicast 5375 * packets. 5376 */ 5377 if (*total_flags & FIF_ALLMULTI) { 5378 kfree(cmd); 5379 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL); 5380 } 5381 5382 if (cmd != NULL) { 5383 mwl8k_post_cmd(hw, cmd); 5384 kfree(cmd); 5385 } 5386 5387 mwl8k_fw_unlock(hw); 5388} 5389 5390static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, int radio_idx, 5391 u32 value) 5392{ 5393 return mwl8k_cmd_set_rts_threshold(hw, radio_idx, value); 5394} 5395 5396static int mwl8k_sta_remove(struct ieee80211_hw *hw, 5397 struct ieee80211_vif *vif, 5398 struct ieee80211_sta *sta) 5399{ 5400 struct mwl8k_priv *priv = hw->priv; 5401 5402 if (priv->ap_fw) 5403 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr); 5404 else 5405 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr); 5406} 5407 5408static int mwl8k_sta_add(struct ieee80211_hw *hw, 5409 struct ieee80211_vif *vif, 5410 struct ieee80211_sta *sta) 5411{ 5412 struct mwl8k_priv *priv = hw->priv; 5413 int ret; 5414 int i; 5415 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 5416 struct ieee80211_key_conf *key; 5417 5418 if (!priv->ap_fw) { 5419 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta); 5420 if (ret >= 0) { 5421 MWL8K_STA(sta)->peer_id = ret; 5422 if (sta->deflink.ht_cap.ht_supported) 5423 MWL8K_STA(sta)->is_ampdu_allowed = true; 5424 ret = 0; 5425 } 5426 5427 } else { 5428 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta); 5429 } 5430 5431 for (i = 0; i < NUM_WEP_KEYS; i++) { 5432 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key); 5433 if (mwl8k_vif->wep_key_conf[i].enabled) 5434 mwl8k_set_key(hw, SET_KEY, vif, sta, key); 5435 } 5436 return ret; 5437} 5438 5439static int mwl8k_conf_tx(struct ieee80211_hw *hw, 5440 struct ieee80211_vif *vif, 5441 unsigned int link_id, u16 queue, 5442 const struct ieee80211_tx_queue_params *params) 5443{ 5444 struct mwl8k_priv *priv = hw->priv; 5445 int rc; 5446 5447 rc = mwl8k_fw_lock(hw); 5448 if (!rc) { 5449 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1); 5450 memcpy(&priv->wmm_params[queue], params, sizeof(*params)); 5451 5452 if (!priv->wmm_enabled) 5453 rc = mwl8k_cmd_set_wmm_mode(hw, 1); 5454 5455 if (!rc) { 5456 int q = MWL8K_TX_WMM_QUEUES - 1 - queue; 5457 rc = mwl8k_cmd_set_edca_params(hw, q, 5458 params->cw_min, 5459 params->cw_max, 5460 params->aifs, 5461 params->txop); 5462 } 5463 5464 mwl8k_fw_unlock(hw); 5465 } 5466 5467 return rc; 5468} 5469 5470static int mwl8k_get_stats(struct ieee80211_hw *hw, 5471 struct ieee80211_low_level_stats *stats) 5472{ 5473 return mwl8k_cmd_get_stat(hw, stats); 5474} 5475 5476static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx, 5477 struct survey_info *survey) 5478{ 5479 struct mwl8k_priv *priv = hw->priv; 5480 struct ieee80211_conf *conf = &hw->conf; 5481 struct ieee80211_supported_band *sband; 5482 5483 if (priv->ap_fw) { 5484 sband = hw->wiphy->bands[NL80211_BAND_2GHZ]; 5485 5486 if (sband && idx >= sband->n_channels) { 5487 idx -= sband->n_channels; 5488 sband = NULL; 5489 } 5490 5491 if (!sband) 5492 sband = hw->wiphy->bands[NL80211_BAND_5GHZ]; 5493 5494 if (!sband || idx >= sband->n_channels) 5495 return -ENOENT; 5496 5497 memcpy(survey, &priv->survey[idx], sizeof(*survey)); 5498 survey->channel = &sband->channels[idx]; 5499 5500 return 0; 5501 } 5502 5503 if (idx != 0) 5504 return -ENOENT; 5505 5506 survey->channel = conf->chandef.chan; 5507 survey->filled = SURVEY_INFO_NOISE_DBM; 5508 survey->noise = priv->noise; 5509 5510 return 0; 5511} 5512 5513#define MAX_AMPDU_ATTEMPTS 5 5514 5515static int 5516mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5517 struct ieee80211_ampdu_params *params) 5518{ 5519 struct ieee80211_sta *sta = params->sta; 5520 enum ieee80211_ampdu_mlme_action action = params->action; 5521 u16 tid = params->tid; 5522 u16 *ssn = ¶ms->ssn; 5523 u8 buf_size = params->buf_size; 5524 int i, rc = 0; 5525 struct mwl8k_priv *priv = hw->priv; 5526 struct mwl8k_ampdu_stream *stream; 5527 u8 *addr = sta->addr, idx; 5528 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 5529 5530 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION)) 5531 return -ENOTSUPP; 5532 5533 spin_lock(&priv->stream_lock); 5534 stream = mwl8k_lookup_stream(hw, addr, tid); 5535 5536 switch (action) { 5537 case IEEE80211_AMPDU_RX_START: 5538 case IEEE80211_AMPDU_RX_STOP: 5539 break; 5540 case IEEE80211_AMPDU_TX_START: 5541 /* By the time we get here the hw queues may contain outgoing 5542 * packets for this RA/TID that are not part of this BA 5543 * session. The hw will assign sequence numbers to these 5544 * packets as they go out. So if we query the hw for its next 5545 * sequence number and use that for the SSN here, it may end up 5546 * being wrong, which will lead to sequence number mismatch at 5547 * the recipient. To avoid this, we reset the sequence number 5548 * to O for the first MPDU in this BA stream. 5549 */ 5550 *ssn = 0; 5551 if (stream == NULL) { 5552 /* This means that somebody outside this driver called 5553 * ieee80211_start_tx_ba_session. This is unexpected 5554 * because we do our own rate control. Just warn and 5555 * move on. 5556 */ 5557 wiphy_warn(hw->wiphy, "Unexpected call to %s. " 5558 "Proceeding anyway.\n", __func__); 5559 stream = mwl8k_add_stream(hw, sta, tid); 5560 } 5561 if (stream == NULL) { 5562 wiphy_debug(hw->wiphy, "no free AMPDU streams\n"); 5563 rc = -EBUSY; 5564 break; 5565 } 5566 stream->state = AMPDU_STREAM_IN_PROGRESS; 5567 5568 /* Release the lock before we do the time consuming stuff */ 5569 spin_unlock(&priv->stream_lock); 5570 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) { 5571 5572 /* Check if link is still valid */ 5573 if (!sta_info->is_ampdu_allowed) { 5574 spin_lock(&priv->stream_lock); 5575 mwl8k_remove_stream(hw, stream); 5576 spin_unlock(&priv->stream_lock); 5577 return -EBUSY; 5578 } 5579 5580 rc = mwl8k_check_ba(hw, stream, vif); 5581 5582 /* If HW restart is in progress mwl8k_post_cmd will 5583 * return -EBUSY. Avoid retrying mwl8k_check_ba in 5584 * such cases 5585 */ 5586 if (!rc || rc == -EBUSY) 5587 break; 5588 /* 5589 * HW queues take time to be flushed, give them 5590 * sufficient time 5591 */ 5592 5593 msleep(1000); 5594 } 5595 spin_lock(&priv->stream_lock); 5596 if (rc) { 5597 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d" 5598 " attempts\n", tid, MAX_AMPDU_ATTEMPTS); 5599 mwl8k_remove_stream(hw, stream); 5600 rc = -EBUSY; 5601 break; 5602 } 5603 rc = IEEE80211_AMPDU_TX_START_IMMEDIATE; 5604 break; 5605 case IEEE80211_AMPDU_TX_STOP_CONT: 5606 case IEEE80211_AMPDU_TX_STOP_FLUSH: 5607 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 5608 if (stream) { 5609 if (stream->state == AMPDU_STREAM_ACTIVE) { 5610 idx = stream->idx; 5611 spin_unlock(&priv->stream_lock); 5612 mwl8k_destroy_ba(hw, idx); 5613 spin_lock(&priv->stream_lock); 5614 } 5615 mwl8k_remove_stream(hw, stream); 5616 } 5617 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); 5618 break; 5619 case IEEE80211_AMPDU_TX_OPERATIONAL: 5620 BUG_ON(stream == NULL); 5621 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS); 5622 spin_unlock(&priv->stream_lock); 5623 rc = mwl8k_create_ba(hw, stream, buf_size, vif); 5624 spin_lock(&priv->stream_lock); 5625 if (!rc) 5626 stream->state = AMPDU_STREAM_ACTIVE; 5627 else { 5628 idx = stream->idx; 5629 spin_unlock(&priv->stream_lock); 5630 mwl8k_destroy_ba(hw, idx); 5631 spin_lock(&priv->stream_lock); 5632 wiphy_debug(hw->wiphy, 5633 "Failed adding stream for sta %pM tid %d\n", 5634 addr, tid); 5635 mwl8k_remove_stream(hw, stream); 5636 } 5637 break; 5638 5639 default: 5640 rc = -ENOTSUPP; 5641 } 5642 5643 spin_unlock(&priv->stream_lock); 5644 return rc; 5645} 5646 5647static void mwl8k_sw_scan_start(struct ieee80211_hw *hw, 5648 struct ieee80211_vif *vif, 5649 const u8 *mac_addr) 5650{ 5651 struct mwl8k_priv *priv = hw->priv; 5652 u8 tmp; 5653 5654 if (!priv->ap_fw) 5655 return; 5656 5657 /* clear all stats */ 5658 priv->channel_time = 0; 5659 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5660 ioread32(priv->regs + NOK_CCA_CNT_REG); 5661 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5662 5663 priv->sw_scan_start = true; 5664} 5665 5666static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw, 5667 struct ieee80211_vif *vif) 5668{ 5669 struct mwl8k_priv *priv = hw->priv; 5670 u8 tmp; 5671 5672 if (!priv->ap_fw) 5673 return; 5674 5675 priv->sw_scan_start = false; 5676 5677 /* clear all stats */ 5678 priv->channel_time = 0; 5679 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5680 ioread32(priv->regs + NOK_CCA_CNT_REG); 5681 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5682} 5683 5684static const struct ieee80211_ops mwl8k_ops = { 5685 .add_chanctx = ieee80211_emulate_add_chanctx, 5686 .remove_chanctx = ieee80211_emulate_remove_chanctx, 5687 .change_chanctx = ieee80211_emulate_change_chanctx, 5688 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, 5689 .tx = mwl8k_tx, 5690 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 5691 .start = mwl8k_start, 5692 .stop = mwl8k_stop, 5693 .add_interface = mwl8k_add_interface, 5694 .remove_interface = mwl8k_remove_interface, 5695 .config = mwl8k_config, 5696 .bss_info_changed = mwl8k_bss_info_changed, 5697 .prepare_multicast = mwl8k_prepare_multicast, 5698 .configure_filter = mwl8k_configure_filter, 5699 .set_key = mwl8k_set_key, 5700 .set_rts_threshold = mwl8k_set_rts_threshold, 5701 .sta_add = mwl8k_sta_add, 5702 .sta_remove = mwl8k_sta_remove, 5703 .conf_tx = mwl8k_conf_tx, 5704 .get_stats = mwl8k_get_stats, 5705 .get_survey = mwl8k_get_survey, 5706 .ampdu_action = mwl8k_ampdu_action, 5707 .sw_scan_start = mwl8k_sw_scan_start, 5708 .sw_scan_complete = mwl8k_sw_scan_complete, 5709}; 5710 5711static void mwl8k_finalize_join_worker(struct work_struct *work) 5712{ 5713 struct mwl8k_priv *priv = 5714 container_of(work, struct mwl8k_priv, finalize_join_worker); 5715 struct sk_buff *skb = priv->beacon_skb; 5716 struct ieee80211_mgmt *mgmt = (void *)skb->data; 5717 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable); 5718 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM, 5719 mgmt->u.beacon.variable, len); 5720 int dtim_period = 1; 5721 5722 if (tim && tim[1] >= 2) 5723 dtim_period = tim[3]; 5724 5725 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period); 5726 5727 dev_kfree_skb(skb); 5728 priv->beacon_skb = NULL; 5729} 5730 5731enum { 5732 MWL8363 = 0, 5733 MWL8687, 5734 MWL8366, 5735 MWL8764, 5736}; 5737 5738#define MWL8K_8366_AP_FW_API 3 5739#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw" 5740#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api) 5741 5742#define MWL8K_8764_AP_FW_API 1 5743#define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw" 5744#define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api) 5745 5746static struct mwl8k_device_info mwl8k_info_tbl[] = { 5747 [MWL8363] = { 5748 .part_name = "88w8363", 5749 .helper_image = "mwl8k/helper_8363.fw", 5750 .fw_image_sta = "mwl8k/fmimage_8363.fw", 5751 }, 5752 [MWL8687] = { 5753 .part_name = "88w8687", 5754 .helper_image = "mwl8k/helper_8687.fw", 5755 .fw_image_sta = "mwl8k/fmimage_8687.fw", 5756 }, 5757 [MWL8366] = { 5758 .part_name = "88w8366", 5759 .helper_image = "mwl8k/helper_8366.fw", 5760 .fw_image_sta = "mwl8k/fmimage_8366.fw", 5761 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API), 5762 .fw_api_ap = MWL8K_8366_AP_FW_API, 5763 .ap_rxd_ops = &rxd_ap_ops, 5764 }, 5765 [MWL8764] = { 5766 .part_name = "88w8764", 5767 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API), 5768 .fw_api_ap = MWL8K_8764_AP_FW_API, 5769 .ap_rxd_ops = &rxd_ap_ops, 5770 }, 5771}; 5772 5773MODULE_FIRMWARE("mwl8k/helper_8363.fw"); 5774MODULE_FIRMWARE("mwl8k/fmimage_8363.fw"); 5775MODULE_FIRMWARE("mwl8k/helper_8687.fw"); 5776MODULE_FIRMWARE("mwl8k/fmimage_8687.fw"); 5777MODULE_FIRMWARE("mwl8k/helper_8366.fw"); 5778MODULE_FIRMWARE("mwl8k/fmimage_8366.fw"); 5779MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API)); 5780 5781static const struct pci_device_id mwl8k_pci_id_table[] = { 5782 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, }, 5783 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, }, 5784 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, }, 5785 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, }, 5786 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, }, 5787 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, }, 5788 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, }, 5789 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, }, 5790 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, }, 5791 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, }, 5792 { }, 5793}; 5794MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table); 5795 5796static int mwl8k_request_alt_fw(struct mwl8k_priv *priv) 5797{ 5798 int rc; 5799 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n" 5800 "Trying alternative firmware %s\n", pci_name(priv->pdev), 5801 priv->fw_pref, priv->fw_alt); 5802 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true); 5803 if (rc) { 5804 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5805 pci_name(priv->pdev), priv->fw_alt); 5806 return rc; 5807 } 5808 return 0; 5809} 5810 5811static int mwl8k_firmware_load_success(struct mwl8k_priv *priv); 5812static void mwl8k_fw_state_machine(const struct firmware *fw, void *context) 5813{ 5814 struct mwl8k_priv *priv = context; 5815 struct mwl8k_device_info *di = priv->device_info; 5816 int rc; 5817 5818 switch (priv->fw_state) { 5819 case FW_STATE_INIT: 5820 if (!fw) { 5821 printk(KERN_ERR "%s: Error requesting helper fw %s\n", 5822 pci_name(priv->pdev), di->helper_image); 5823 goto fail; 5824 } 5825 priv->fw_helper = fw; 5826 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode, 5827 true); 5828 if (rc && priv->fw_alt) { 5829 rc = mwl8k_request_alt_fw(priv); 5830 if (rc) 5831 goto fail; 5832 priv->fw_state = FW_STATE_LOADING_ALT; 5833 } else if (rc) 5834 goto fail; 5835 else 5836 priv->fw_state = FW_STATE_LOADING_PREF; 5837 break; 5838 5839 case FW_STATE_LOADING_PREF: 5840 if (!fw) { 5841 if (priv->fw_alt) { 5842 rc = mwl8k_request_alt_fw(priv); 5843 if (rc) 5844 goto fail; 5845 priv->fw_state = FW_STATE_LOADING_ALT; 5846 } else 5847 goto fail; 5848 } else { 5849 priv->fw_ucode = fw; 5850 rc = mwl8k_firmware_load_success(priv); 5851 if (rc) 5852 goto fail; 5853 else 5854 complete(&priv->firmware_loading_complete); 5855 } 5856 break; 5857 5858 case FW_STATE_LOADING_ALT: 5859 if (!fw) { 5860 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5861 pci_name(priv->pdev), di->helper_image); 5862 goto fail; 5863 } 5864 priv->fw_ucode = fw; 5865 rc = mwl8k_firmware_load_success(priv); 5866 if (rc) 5867 goto fail; 5868 else 5869 complete(&priv->firmware_loading_complete); 5870 break; 5871 5872 default: 5873 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n", 5874 MWL8K_NAME, priv->fw_state); 5875 BUG_ON(1); 5876 } 5877 5878 return; 5879 5880fail: 5881 priv->fw_state = FW_STATE_ERROR; 5882 complete(&priv->firmware_loading_complete); 5883 mwl8k_release_firmware(priv); 5884 device_release_driver(&priv->pdev->dev); 5885} 5886 5887#define MAX_RESTART_ATTEMPTS 1 5888static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image, 5889 bool nowait) 5890{ 5891 struct mwl8k_priv *priv = hw->priv; 5892 int rc; 5893 int count = MAX_RESTART_ATTEMPTS; 5894 5895retry: 5896 /* Reset firmware and hardware */ 5897 mwl8k_hw_reset(priv); 5898 5899 /* Ask userland hotplug daemon for the device firmware */ 5900 rc = mwl8k_request_firmware(priv, fw_image, nowait); 5901 if (rc) { 5902 wiphy_err(hw->wiphy, "Firmware files not found\n"); 5903 return rc; 5904 } 5905 5906 if (nowait) 5907 return rc; 5908 5909 /* Load firmware into hardware */ 5910 rc = mwl8k_load_firmware(hw); 5911 if (rc) 5912 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 5913 5914 /* Reclaim memory once firmware is successfully loaded */ 5915 mwl8k_release_firmware(priv); 5916 5917 if (rc && count) { 5918 /* FW did not start successfully; 5919 * lets try one more time 5920 */ 5921 count--; 5922 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n"); 5923 msleep(20); 5924 goto retry; 5925 } 5926 5927 return rc; 5928} 5929 5930static int mwl8k_init_txqs(struct ieee80211_hw *hw) 5931{ 5932 struct mwl8k_priv *priv = hw->priv; 5933 int rc = 0; 5934 int i; 5935 5936 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 5937 rc = mwl8k_txq_init(hw, i); 5938 if (rc) 5939 break; 5940 if (priv->ap_fw) 5941 iowrite32(priv->txq[i].txd_dma, 5942 priv->sram + priv->txq_offset[i]); 5943 } 5944 return rc; 5945} 5946 5947/* initialize hw after successfully loading a firmware image */ 5948static int mwl8k_probe_hw(struct ieee80211_hw *hw) 5949{ 5950 struct mwl8k_priv *priv = hw->priv; 5951 int rc = 0; 5952 int i; 5953 5954 if (priv->ap_fw) { 5955 priv->rxd_ops = priv->device_info->ap_rxd_ops; 5956 if (priv->rxd_ops == NULL) { 5957 wiphy_err(hw->wiphy, 5958 "Driver does not have AP firmware image support for this hardware\n"); 5959 rc = -ENOENT; 5960 goto err_stop_firmware; 5961 } 5962 } else { 5963 priv->rxd_ops = &rxd_sta_ops; 5964 } 5965 5966 priv->sniffer_enabled = false; 5967 priv->wmm_enabled = false; 5968 priv->pending_tx_pkts = 0; 5969 atomic_set(&priv->watchdog_event_pending, 0); 5970 5971 rc = mwl8k_rxq_init(hw, 0); 5972 if (rc) 5973 goto err_stop_firmware; 5974 rxq_refill(hw, 0, INT_MAX); 5975 5976 /* For the sta firmware, we need to know the dma addresses of tx queues 5977 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them 5978 * prior to issuing this command. But for the AP case, we learn the 5979 * total number of queues from the result CMD_GET_HW_SPEC, so for this 5980 * case we must initialize the tx queues after. 5981 */ 5982 priv->num_ampdu_queues = 0; 5983 if (!priv->ap_fw) { 5984 rc = mwl8k_init_txqs(hw); 5985 if (rc) 5986 goto err_free_queues; 5987 } 5988 5989 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 5990 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5991 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY| 5992 MWL8K_A2H_INT_BA_WATCHDOG, 5993 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); 5994 iowrite32(MWL8K_A2H_INT_OPC_DONE, 5995 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 5996 5997 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 5998 IRQF_SHARED, MWL8K_NAME, hw); 5999 if (rc) { 6000 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 6001 goto err_free_queues; 6002 } 6003 6004 /* 6005 * When hw restart is requested, 6006 * mac80211 will take care of clearing 6007 * the ampdu streams, so do not clear 6008 * the ampdu state here 6009 */ 6010 if (!priv->hw_restart_in_progress) 6011 memset(priv->ampdu, 0, sizeof(priv->ampdu)); 6012 6013 /* 6014 * Temporarily enable interrupts. Initial firmware host 6015 * commands use interrupts and avoid polling. Disable 6016 * interrupts when done. 6017 */ 6018 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 6019 6020 /* Get config data, mac addrs etc */ 6021 if (priv->ap_fw) { 6022 rc = mwl8k_cmd_get_hw_spec_ap(hw); 6023 if (!rc) 6024 rc = mwl8k_init_txqs(hw); 6025 if (!rc) 6026 rc = mwl8k_cmd_set_hw_spec(hw); 6027 } else { 6028 rc = mwl8k_cmd_get_hw_spec_sta(hw); 6029 } 6030 if (rc) { 6031 wiphy_err(hw->wiphy, "Cannot initialise firmware\n"); 6032 goto err_free_irq; 6033 } 6034 6035 /* Turn radio off */ 6036 rc = mwl8k_cmd_radio_disable(hw); 6037 if (rc) { 6038 wiphy_err(hw->wiphy, "Cannot disable\n"); 6039 goto err_free_irq; 6040 } 6041 6042 /* Clear MAC address */ 6043 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00"); 6044 if (rc) { 6045 wiphy_err(hw->wiphy, "Cannot clear MAC address\n"); 6046 goto err_free_irq; 6047 } 6048 6049 /* Configure Antennas */ 6050 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3); 6051 if (rc) 6052 wiphy_warn(hw->wiphy, "failed to set # of RX antennas"); 6053 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7); 6054 if (rc) 6055 wiphy_warn(hw->wiphy, "failed to set # of TX antennas"); 6056 6057 6058 /* Disable interrupts */ 6059 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 6060 free_irq(priv->pdev->irq, hw); 6061 6062 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n", 6063 priv->device_info->part_name, 6064 priv->hw_rev, hw->wiphy->perm_addr, 6065 priv->ap_fw ? "AP" : "STA", 6066 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff, 6067 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff); 6068 6069 return 0; 6070 6071err_free_irq: 6072 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 6073 free_irq(priv->pdev->irq, hw); 6074 6075err_free_queues: 6076 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6077 mwl8k_txq_deinit(hw, i); 6078 mwl8k_rxq_deinit(hw, 0); 6079 6080err_stop_firmware: 6081 mwl8k_hw_reset(priv); 6082 6083 return rc; 6084} 6085 6086/* 6087 * invoke mwl8k_reload_firmware to change the firmware image after the device 6088 * has already been registered 6089 */ 6090static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image) 6091{ 6092 int i, rc = 0; 6093 struct mwl8k_priv *priv = hw->priv; 6094 struct mwl8k_vif *vif, *tmp_vif; 6095 6096 mwl8k_stop(hw, false); 6097 mwl8k_rxq_deinit(hw, 0); 6098 6099 /* 6100 * All the existing interfaces are re-added by the ieee80211_reconfig; 6101 * which means driver should remove existing interfaces before calling 6102 * ieee80211_restart_hw 6103 */ 6104 if (priv->hw_restart_in_progress) 6105 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list) 6106 mwl8k_remove_vif(priv, vif); 6107 6108 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6109 mwl8k_txq_deinit(hw, i); 6110 6111 rc = mwl8k_init_firmware(hw, fw_image, false); 6112 if (rc) 6113 goto fail; 6114 6115 rc = mwl8k_probe_hw(hw); 6116 if (rc) 6117 goto fail; 6118 6119 if (priv->hw_restart_in_progress) 6120 return rc; 6121 6122 rc = mwl8k_start(hw); 6123 if (rc) 6124 goto fail; 6125 6126 rc = mwl8k_config(hw, -1, ~0); 6127 if (rc) 6128 goto fail; 6129 6130 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) { 6131 rc = mwl8k_conf_tx(hw, NULL, 0, i, &priv->wmm_params[i]); 6132 if (rc) 6133 goto fail; 6134 } 6135 6136 return rc; 6137 6138fail: 6139 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n"); 6140 return rc; 6141} 6142 6143static const struct ieee80211_iface_limit ap_if_limits[] = { 6144 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) }, 6145 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) }, 6146}; 6147 6148static const struct ieee80211_iface_combination ap_if_comb = { 6149 .limits = ap_if_limits, 6150 .n_limits = ARRAY_SIZE(ap_if_limits), 6151 .max_interfaces = 8, 6152 .num_different_channels = 1, 6153}; 6154 6155 6156static int mwl8k_firmware_load_success(struct mwl8k_priv *priv) 6157{ 6158 struct ieee80211_hw *hw = priv->hw; 6159 int i, rc; 6160 6161 rc = mwl8k_load_firmware(hw); 6162 mwl8k_release_firmware(priv); 6163 if (rc) { 6164 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 6165 return rc; 6166 } 6167 6168 /* 6169 * Extra headroom is the size of the required DMA header 6170 * minus the size of the smallest 802.11 frame (CTS frame). 6171 */ 6172 hw->extra_tx_headroom = 6173 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); 6174 6175 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0; 6176 6177 hw->queues = MWL8K_TX_WMM_QUEUES; 6178 6179 /* Set rssi values to dBm */ 6180 ieee80211_hw_set(hw, SIGNAL_DBM); 6181 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 6182 6183 /* 6184 * Ask mac80211 to not to trigger PS mode 6185 * based on PM bit of incoming frames. 6186 */ 6187 if (priv->ap_fw) 6188 ieee80211_hw_set(hw, AP_LINK_PS); 6189 6190 hw->vif_data_size = sizeof(struct mwl8k_vif); 6191 hw->sta_data_size = sizeof(struct mwl8k_sta); 6192 6193 priv->macids_used = 0; 6194 INIT_LIST_HEAD(&priv->vif_list); 6195 6196 /* Set default radio state and preamble */ 6197 priv->radio_on = false; 6198 priv->radio_short_preamble = false; 6199 6200 /* Finalize join worker */ 6201 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); 6202 /* Handle watchdog ba events */ 6203 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events); 6204 /* To reload the firmware if it crashes */ 6205 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work); 6206 6207 /* TX reclaim and RX tasklets. */ 6208 tasklet_setup(&priv->poll_tx_task, mwl8k_tx_poll); 6209 tasklet_disable(&priv->poll_tx_task); 6210 tasklet_setup(&priv->poll_rx_task, mwl8k_rx_poll); 6211 tasklet_disable(&priv->poll_rx_task); 6212 6213 /* Power management cookie */ 6214 priv->cookie = dma_alloc_coherent(&priv->pdev->dev, 4, 6215 &priv->cookie_dma, GFP_KERNEL); 6216 if (priv->cookie == NULL) 6217 return -ENOMEM; 6218 6219 mutex_init(&priv->fw_mutex); 6220 priv->fw_mutex_owner = NULL; 6221 priv->fw_mutex_depth = 0; 6222 priv->hostcmd_wait = NULL; 6223 6224 spin_lock_init(&priv->tx_lock); 6225 6226 spin_lock_init(&priv->stream_lock); 6227 6228 priv->tx_wait = NULL; 6229 6230 rc = mwl8k_probe_hw(hw); 6231 if (rc) 6232 goto err_free_cookie; 6233 6234 hw->wiphy->interface_modes = 0; 6235 6236 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) { 6237 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP); 6238 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6239 hw->wiphy->iface_combinations = &ap_if_comb; 6240 hw->wiphy->n_iface_combinations = 1; 6241 } 6242 6243 if (priv->sta_macids_supported || priv->device_info->fw_image_sta) 6244 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6245 6246 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 6247 6248 rc = ieee80211_register_hw(hw); 6249 if (rc) { 6250 wiphy_err(hw->wiphy, "Cannot register device\n"); 6251 goto err_unprobe_hw; 6252 } 6253 6254 return 0; 6255 6256err_unprobe_hw: 6257 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6258 mwl8k_txq_deinit(hw, i); 6259 mwl8k_rxq_deinit(hw, 0); 6260 6261err_free_cookie: 6262 if (priv->cookie != NULL) 6263 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, 6264 priv->cookie_dma); 6265 6266 return rc; 6267} 6268static int mwl8k_probe(struct pci_dev *pdev, 6269 const struct pci_device_id *id) 6270{ 6271 static int printed_version; 6272 struct ieee80211_hw *hw; 6273 struct mwl8k_priv *priv; 6274 struct mwl8k_device_info *di; 6275 int rc; 6276 6277 if (!printed_version) { 6278 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION); 6279 printed_version = 1; 6280 } 6281 6282 6283 rc = pci_enable_device(pdev); 6284 if (rc) { 6285 printk(KERN_ERR "%s: Cannot enable new PCI device\n", 6286 MWL8K_NAME); 6287 return rc; 6288 } 6289 6290 rc = pci_request_regions(pdev, MWL8K_NAME); 6291 if (rc) { 6292 printk(KERN_ERR "%s: Cannot obtain PCI resources\n", 6293 MWL8K_NAME); 6294 goto err_disable_device; 6295 } 6296 6297 pci_set_master(pdev); 6298 6299 6300 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); 6301 if (hw == NULL) { 6302 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); 6303 rc = -ENOMEM; 6304 goto err_free_reg; 6305 } 6306 6307 SET_IEEE80211_DEV(hw, &pdev->dev); 6308 pci_set_drvdata(pdev, hw); 6309 6310 priv = hw->priv; 6311 priv->hw = hw; 6312 priv->pdev = pdev; 6313 priv->device_info = &mwl8k_info_tbl[id->driver_data]; 6314 6315 if (id->driver_data == MWL8764) 6316 priv->is_8764 = true; 6317 6318 priv->sram = pci_iomap(pdev, 0, 0x10000); 6319 if (priv->sram == NULL) { 6320 wiphy_err(hw->wiphy, "Cannot map device SRAM\n"); 6321 rc = -EIO; 6322 goto err_iounmap; 6323 } 6324 6325 /* 6326 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1. 6327 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2. 6328 */ 6329 priv->regs = pci_iomap(pdev, 1, 0x10000); 6330 if (priv->regs == NULL) { 6331 priv->regs = pci_iomap(pdev, 2, 0x10000); 6332 if (priv->regs == NULL) { 6333 wiphy_err(hw->wiphy, "Cannot map device registers\n"); 6334 rc = -EIO; 6335 goto err_iounmap; 6336 } 6337 } 6338 6339 /* 6340 * Choose the initial fw image depending on user input. If a second 6341 * image is available, make it the alternative image that will be 6342 * loaded if the first one fails. 6343 */ 6344 init_completion(&priv->firmware_loading_complete); 6345 di = priv->device_info; 6346 if (ap_mode_default && di->fw_image_ap) { 6347 priv->fw_pref = di->fw_image_ap; 6348 priv->fw_alt = di->fw_image_sta; 6349 } else if (!ap_mode_default && di->fw_image_sta) { 6350 priv->fw_pref = di->fw_image_sta; 6351 priv->fw_alt = di->fw_image_ap; 6352 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) { 6353 printk(KERN_WARNING "AP fw is unavailable. Using STA fw."); 6354 priv->fw_pref = di->fw_image_sta; 6355 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) { 6356 printk(KERN_WARNING "STA fw is unavailable. Using AP fw."); 6357 priv->fw_pref = di->fw_image_ap; 6358 } 6359 rc = mwl8k_init_firmware(hw, priv->fw_pref, true); 6360 if (rc) 6361 goto err_stop_firmware; 6362 6363 priv->hw_restart_in_progress = false; 6364 6365 priv->running_bsses = 0; 6366 6367 return rc; 6368 6369err_stop_firmware: 6370 mwl8k_hw_reset(priv); 6371 6372err_iounmap: 6373 if (priv->regs != NULL) 6374 pci_iounmap(pdev, priv->regs); 6375 6376 if (priv->sram != NULL) 6377 pci_iounmap(pdev, priv->sram); 6378 6379 ieee80211_free_hw(hw); 6380 6381err_free_reg: 6382 pci_release_regions(pdev); 6383 6384err_disable_device: 6385 pci_disable_device(pdev); 6386 6387 return rc; 6388} 6389 6390static void mwl8k_remove(struct pci_dev *pdev) 6391{ 6392 struct ieee80211_hw *hw = pci_get_drvdata(pdev); 6393 struct mwl8k_priv *priv; 6394 int i; 6395 6396 if (hw == NULL) 6397 return; 6398 priv = hw->priv; 6399 6400 wait_for_completion(&priv->firmware_loading_complete); 6401 6402 if (priv->fw_state == FW_STATE_ERROR) { 6403 mwl8k_hw_reset(priv); 6404 goto unmap; 6405 } 6406 6407 ieee80211_stop_queues(hw); 6408 6409 ieee80211_unregister_hw(hw); 6410 6411 /* Remove TX reclaim and RX tasklets. */ 6412 tasklet_kill(&priv->poll_tx_task); 6413 tasklet_kill(&priv->poll_rx_task); 6414 6415 /* Stop hardware */ 6416 mwl8k_hw_reset(priv); 6417 6418 /* Return all skbs to mac80211 */ 6419 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6420 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 6421 6422 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6423 mwl8k_txq_deinit(hw, i); 6424 6425 mwl8k_rxq_deinit(hw, 0); 6426 6427 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, priv->cookie_dma); 6428 6429unmap: 6430 pci_iounmap(pdev, priv->regs); 6431 pci_iounmap(pdev, priv->sram); 6432 ieee80211_free_hw(hw); 6433 pci_release_regions(pdev); 6434 pci_disable_device(pdev); 6435} 6436 6437static struct pci_driver mwl8k_driver = { 6438 .name = MWL8K_NAME, 6439 .id_table = mwl8k_pci_id_table, 6440 .probe = mwl8k_probe, 6441 .remove = mwl8k_remove, 6442}; 6443 6444module_pci_driver(mwl8k_driver); 6445 6446MODULE_DESCRIPTION(MWL8K_DESC); 6447MODULE_VERSION(MWL8K_VERSION); 6448MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>"); 6449MODULE_LICENSE("GPL");
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