Pileus Git - ~andy/linux/blob - drivers/net/wireless/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/init.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/sched.h>
  17 #include <linux/spinlock.h>
  18 #include <linux/list.h>
  19 #include <linux/pci.h>
  20 #include <linux/delay.h>
  21 #include <linux/completion.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/slab.h>
  24 #include <net/mac80211.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/firmware.h>
  27 #include <linux/workqueue.h>
  28
  29 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  30 #define MWL8K_NAME      KBUILD_MODNAME
  31 #define MWL8K_VERSION   "0.13"
  32
  33 /* Module parameters */
  34 static bool ap_mode_default;
  35 module_param(ap_mode_default, bool, 0);
  36 MODULE_PARM_DESC(ap_mode_default,
  37                  "Set to 1 to make ap mode the default instead of sta mode");
  38
  39 /* Register definitions */
  40 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  41 #define  MWL8K_MODE_STA                          0x0000005a
  42 #define  MWL8K_MODE_AP                           0x000000a5
  43 #define MWL8K_HIU_INT_CODE                      0x00000c14
  44 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  45 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  46 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  47 #define MWL8K_HIU_SCRATCH                       0x00000c40
  48
  49 /* Host->device communications */
  50 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  51 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  52 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  53 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  54 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  55 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  56 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  57 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  58 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  59
  60 /* Device->host communications */
  61 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  62 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  63 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  64 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  65 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  66 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  67 #define  MWL8K_A2H_INT_BA_WATCHDOG               (1 << 14)
  68 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  69 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  70 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  71 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  72 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  73 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  74 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  75 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  76 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  77
  78 /* HW micro second timer register
  79  * located at offset 0xA600. This
  80  * will be used to timestamp tx
  81  * packets.
  82  */
  83
  84 #define MWL8K_HW_TIMER_REGISTER                 0x0000a600
  85
  86 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  87                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  88                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  89                                  MWL8K_A2H_INT_RADAR_DETECT | \
  90                                  MWL8K_A2H_INT_RADIO_ON | \
  91                                  MWL8K_A2H_INT_RADIO_OFF | \
  92                                  MWL8K_A2H_INT_MAC_EVENT | \
  93                                  MWL8K_A2H_INT_OPC_DONE | \
  94                                  MWL8K_A2H_INT_RX_READY | \
  95                                  MWL8K_A2H_INT_TX_DONE | \
  96                                  MWL8K_A2H_INT_BA_WATCHDOG)
  97
  98 #define MWL8K_RX_QUEUES         1
  99 #define MWL8K_TX_WMM_QUEUES     4
 100 #define MWL8K_MAX_AMPDU_QUEUES  8
 101 #define MWL8K_MAX_TX_QUEUES     (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
 102 #define mwl8k_tx_queues(priv)   (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
 103
 104 struct rxd_ops {
 105         int rxd_size;
 106         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
 107         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
 108         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
 109                            __le16 *qos, s8 *noise);
 110 };
 111
 112 struct mwl8k_device_info {
 113         char *part_name;
 114         char *helper_image;
 115         char *fw_image_sta;
 116         char *fw_image_ap;
 117         struct rxd_ops *ap_rxd_ops;
 118         u32 fw_api_ap;
 119 };
 120
 121 struct mwl8k_rx_queue {
 122         int rxd_count;
 123
 124         /* hw receives here */
 125         int head;
 126
 127         /* refill descs here */
 128         int tail;
 129
 130         void *rxd;
 131         dma_addr_t rxd_dma;
 132         struct {
 133                 struct sk_buff *skb;
 134                 DEFINE_DMA_UNMAP_ADDR(dma);
 135         } *buf;
 136 };
 137
 138 struct mwl8k_tx_queue {
 139         /* hw transmits here */
 140         int head;
 141
 142         /* sw appends here */
 143         int tail;
 144
 145         unsigned int len;
 146         struct mwl8k_tx_desc *txd;
 147         dma_addr_t txd_dma;
 148         struct sk_buff **skb;
 149 };
 150
 151 enum {
 152         AMPDU_NO_STREAM,
 153         AMPDU_STREAM_NEW,
 154         AMPDU_STREAM_IN_PROGRESS,
 155         AMPDU_STREAM_ACTIVE,
 156 };
 157
 158 struct mwl8k_ampdu_stream {
 159         struct ieee80211_sta *sta;
 160         u8 tid;
 161         u8 state;
 162         u8 idx;
 163         u8 txq_idx; /* index of this stream in priv->txq */
 164 };
 165
 166 struct mwl8k_priv {
 167         struct ieee80211_hw *hw;
 168         struct pci_dev *pdev;
 169         int irq;
 170
 171         struct mwl8k_device_info *device_info;
 172
 173         void __iomem *sram;
 174         void __iomem *regs;
 175
 176         /* firmware */
 177         const struct firmware *fw_helper;
 178         const struct firmware *fw_ucode;
 179
 180         /* hardware/firmware parameters */
 181         bool ap_fw;
 182         struct rxd_ops *rxd_ops;
 183         struct ieee80211_supported_band band_24;
 184         struct ieee80211_channel channels_24[14];
 185         struct ieee80211_rate rates_24[14];
 186         struct ieee80211_supported_band band_50;
 187         struct ieee80211_channel channels_50[4];
 188         struct ieee80211_rate rates_50[9];
 189         u32 ap_macids_supported;
 190         u32 sta_macids_supported;
 191
 192         /* Ampdu stream information */
 193         u8 num_ampdu_queues;
 194         spinlock_t stream_lock;
 195         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 196         struct work_struct watchdog_ba_handle;
 197
 198         /* firmware access */
 199         struct mutex fw_mutex;
 200         struct task_struct *fw_mutex_owner;
 201         struct task_struct *hw_restart_owner;
 202         int fw_mutex_depth;
 203         struct completion *hostcmd_wait;
 204
 205         /* lock held over TX and TX reap */
 206         spinlock_t tx_lock;
 207
 208         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 209         struct completion *tx_wait;
 210
 211         /* List of interfaces.  */
 212         u32 macids_used;
 213         struct list_head vif_list;
 214
 215         /* power management status cookie from firmware */
 216         u32 *cookie;
 217         dma_addr_t cookie_dma;
 218
 219         u16 num_mcaddrs;
 220         u8 hw_rev;
 221         u32 fw_rev;
 222
 223         /*
 224          * Running count of TX packets in flight, to avoid
 225          * iterating over the transmit rings each time.
 226          */
 227         int pending_tx_pkts;
 228
 229         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 230         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 231         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 232
 233         bool radio_on;
 234         bool radio_short_preamble;
 235         bool sniffer_enabled;
 236         bool wmm_enabled;
 237
 238         /* XXX need to convert this to handle multiple interfaces */
 239         bool capture_beacon;
 240         u8 capture_bssid[ETH_ALEN];
 241         struct sk_buff *beacon_skb;
 242
 243         /*
 244          * This FJ worker has to be global as it is scheduled from the
 245          * RX handler.  At this point we don't know which interface it
 246          * belongs to until the list of bssids waiting to complete join
 247          * is checked.
 248          */
 249         struct work_struct finalize_join_worker;
 250
 251         /* Tasklet to perform TX reclaim.  */
 252         struct tasklet_struct poll_tx_task;
 253
 254         /* Tasklet to perform RX.  */
 255         struct tasklet_struct poll_rx_task;
 256
 257         /* Most recently reported noise in dBm */
 258         s8 noise;
 259
 260         /*
 261          * preserve the queue configurations so they can be restored if/when
 262          * the firmware image is swapped.
 263          */
 264         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 265
 266         /* To perform the task of reloading the firmware */
 267         struct work_struct fw_reload;
 268         bool hw_restart_in_progress;
 269
 270         /* async firmware loading state */
 271         unsigned fw_state;
 272         char *fw_pref;
 273         char *fw_alt;
 274         struct completion firmware_loading_complete;
 275 };
 276
 277 #define MAX_WEP_KEY_LEN         13
 278 #define NUM_WEP_KEYS            4
 279
 280 /* Per interface specific private data */
 281 struct mwl8k_vif {
 282         struct list_head list;
 283         struct ieee80211_vif *vif;
 284
 285         /* Firmware macid for this vif.  */
 286         int macid;
 287
 288         /* Non AMPDU sequence number assigned by driver.  */
 289         u16 seqno;
 290
 291         /* Saved WEP keys */
 292         struct {
 293                 u8 enabled;
 294                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 295         } wep_key_conf[NUM_WEP_KEYS];
 296
 297         /* BSSID */
 298         u8 bssid[ETH_ALEN];
 299
 300         /* A flag to indicate is HW crypto is enabled for this bssid */
 301         bool is_hw_crypto_enabled;
 302 };
 303 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 304 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 305
 306 struct tx_traffic_info {
 307         u32 start_time;
 308         u32 pkts;
 309 };
 310
 311 #define MWL8K_MAX_TID 8
 312 struct mwl8k_sta {
 313         /* Index into station database. Returned by UPDATE_STADB.  */
 314         u8 peer_id;
 315         u8 is_ampdu_allowed;
 316         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 317 };
 318 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 319
 320 static const struct ieee80211_channel mwl8k_channels_24[] = {
 321         { .center_freq = 2412, .hw_value = 1, },
 322         { .center_freq = 2417, .hw_value = 2, },
 323         { .center_freq = 2422, .hw_value = 3, },
 324         { .center_freq = 2427, .hw_value = 4, },
 325         { .center_freq = 2432, .hw_value = 5, },
 326         { .center_freq = 2437, .hw_value = 6, },
 327         { .center_freq = 2442, .hw_value = 7, },
 328         { .center_freq = 2447, .hw_value = 8, },
 329         { .center_freq = 2452, .hw_value = 9, },
 330         { .center_freq = 2457, .hw_value = 10, },
 331         { .center_freq = 2462, .hw_value = 11, },
 332         { .center_freq = 2467, .hw_value = 12, },
 333         { .center_freq = 2472, .hw_value = 13, },
 334         { .center_freq = 2484, .hw_value = 14, },
 335 };
 336
 337 static const struct ieee80211_rate mwl8k_rates_24[] = {
 338         { .bitrate = 10, .hw_value = 2, },
 339         { .bitrate = 20, .hw_value = 4, },
 340         { .bitrate = 55, .hw_value = 11, },
 341         { .bitrate = 110, .hw_value = 22, },
 342         { .bitrate = 220, .hw_value = 44, },
 343         { .bitrate = 60, .hw_value = 12, },
 344         { .bitrate = 90, .hw_value = 18, },
 345         { .bitrate = 120, .hw_value = 24, },
 346         { .bitrate = 180, .hw_value = 36, },
 347         { .bitrate = 240, .hw_value = 48, },
 348         { .bitrate = 360, .hw_value = 72, },
 349         { .bitrate = 480, .hw_value = 96, },
 350         { .bitrate = 540, .hw_value = 108, },
 351         { .bitrate = 720, .hw_value = 144, },
 352 };
 353
 354 static const struct ieee80211_channel mwl8k_channels_50[] = {
 355         { .center_freq = 5180, .hw_value = 36, },
 356         { .center_freq = 5200, .hw_value = 40, },
 357         { .center_freq = 5220, .hw_value = 44, },
 358         { .center_freq = 5240, .hw_value = 48, },
 359 };
 360
 361 static const struct ieee80211_rate mwl8k_rates_50[] = {
 362         { .bitrate = 60, .hw_value = 12, },
 363         { .bitrate = 90, .hw_value = 18, },
 364         { .bitrate = 120, .hw_value = 24, },
 365         { .bitrate = 180, .hw_value = 36, },
 366         { .bitrate = 240, .hw_value = 48, },
 367         { .bitrate = 360, .hw_value = 72, },
 368         { .bitrate = 480, .hw_value = 96, },
 369         { .bitrate = 540, .hw_value = 108, },
 370         { .bitrate = 720, .hw_value = 144, },
 371 };
 372
 373 /* Set or get info from Firmware */
 374 #define MWL8K_CMD_GET                   0x0000
 375 #define MWL8K_CMD_SET                   0x0001
 376 #define MWL8K_CMD_SET_LIST              0x0002
 377
 378 /* Firmware command codes */
 379 #define MWL8K_CMD_CODE_DNLD             0x0001
 380 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 381 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 382 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 383 #define MWL8K_CMD_GET_STAT              0x0014
 384 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 385 #define MWL8K_CMD_RF_TX_POWER           0x001e
 386 #define MWL8K_CMD_TX_POWER              0x001f
 387 #define MWL8K_CMD_RF_ANTENNA            0x0020
 388 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 389 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 390 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 391 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 392 #define MWL8K_CMD_SET_AID               0x010d
 393 #define MWL8K_CMD_SET_RATE              0x0110
 394 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 395 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 396 #define MWL8K_CMD_SET_SLOT              0x0114
 397 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 398 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 399 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 400 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 401 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 402 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 403 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 404 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 405 #define MWL8K_CMD_DEL_MAC_ADDR          0x0206          /* per-vif */
 406 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 407 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 408 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 409 #define MWL8K_CMD_UPDATE_STADB          0x1123
 410 #define MWL8K_CMD_BASTREAM              0x1125
 411
 412 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 413 {
 414         u16 command = le16_to_cpu(cmd);
 415
 416 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 417                                         snprintf(buf, bufsize, "%s", #x);\
 418                                         return buf;\
 419                                         } while (0)
 420         switch (command & ~0x8000) {
 421                 MWL8K_CMDNAME(CODE_DNLD);
 422                 MWL8K_CMDNAME(GET_HW_SPEC);
 423                 MWL8K_CMDNAME(SET_HW_SPEC);
 424                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 425                 MWL8K_CMDNAME(GET_STAT);
 426                 MWL8K_CMDNAME(RADIO_CONTROL);
 427                 MWL8K_CMDNAME(RF_TX_POWER);
 428                 MWL8K_CMDNAME(TX_POWER);
 429                 MWL8K_CMDNAME(RF_ANTENNA);
 430                 MWL8K_CMDNAME(SET_BEACON);
 431                 MWL8K_CMDNAME(SET_PRE_SCAN);
 432                 MWL8K_CMDNAME(SET_POST_SCAN);
 433                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 434                 MWL8K_CMDNAME(SET_AID);
 435                 MWL8K_CMDNAME(SET_RATE);
 436                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 437                 MWL8K_CMDNAME(RTS_THRESHOLD);
 438                 MWL8K_CMDNAME(SET_SLOT);
 439                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 440                 MWL8K_CMDNAME(SET_WMM_MODE);
 441                 MWL8K_CMDNAME(MIMO_CONFIG);
 442                 MWL8K_CMDNAME(USE_FIXED_RATE);
 443                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 444                 MWL8K_CMDNAME(SET_MAC_ADDR);
 445                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 446                 MWL8K_CMDNAME(BSS_START);
 447                 MWL8K_CMDNAME(SET_NEW_STN);
 448                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 449                 MWL8K_CMDNAME(UPDATE_STADB);
 450                 MWL8K_CMDNAME(BASTREAM);
 451                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 452         default:
 453                 snprintf(buf, bufsize, "0x%x", cmd);
 454         }
 455 #undef MWL8K_CMDNAME
 456
 457         return buf;
 458 }
 459
 460 /* Hardware and firmware reset */
 461 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 462 {
 463         iowrite32(MWL8K_H2A_INT_RESET,
 464                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 465         iowrite32(MWL8K_H2A_INT_RESET,
 466                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 467         msleep(20);
 468 }
 469
 470 /* Release fw image */
 471 static void mwl8k_release_fw(const struct firmware **fw)
 472 {
 473         if (*fw == NULL)
 474                 return;
 475         release_firmware(*fw);
 476         *fw = NULL;
 477 }
 478
 479 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 480 {
 481         mwl8k_release_fw(&priv->fw_ucode);
 482         mwl8k_release_fw(&priv->fw_helper);
 483 }
 484
 485 /* states for asynchronous f/w loading */
 486 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 487 enum {
 488         FW_STATE_INIT = 0,
 489         FW_STATE_LOADING_PREF,
 490         FW_STATE_LOADING_ALT,
 491         FW_STATE_ERROR,
 492 };
 493
 494 /* Request fw image */
 495 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 496                             const char *fname, const struct firmware **fw,
 497                             bool nowait)
 498 {
 499         /* release current image */
 500         if (*fw != NULL)
 501                 mwl8k_release_fw(fw);
 502
 503         if (nowait)
 504                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 505                                                &priv->pdev->dev, GFP_KERNEL,
 506                                                priv, mwl8k_fw_state_machine);
 507         else
 508                 return request_firmware(fw, fname, &priv->pdev->dev);
 509 }
 510
 511 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 512                                   bool nowait)
 513 {
 514         struct mwl8k_device_info *di = priv->device_info;
 515         int rc;
 516
 517         if (di->helper_image != NULL) {
 518                 if (nowait)
 519                         rc = mwl8k_request_fw(priv, di->helper_image,
 520                                               &priv->fw_helper, true);
 521                 else
 522                         rc = mwl8k_request_fw(priv, di->helper_image,
 523                                               &priv->fw_helper, false);
 524                 if (rc)
 525                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 526                                pci_name(priv->pdev), di->helper_image);
 527
 528                 if (rc || nowait)
 529                         return rc;
 530         }
 531
 532         if (nowait) {
 533                 /*
 534                  * if we get here, no helper image is needed.  Skip the
 535                  * FW_STATE_INIT state.
 536                  */
 537                 priv->fw_state = FW_STATE_LOADING_PREF;
 538                 rc = mwl8k_request_fw(priv, fw_image,
 539                                       &priv->fw_ucode,
 540                                       true);
 541         } else
 542                 rc = mwl8k_request_fw(priv, fw_image,
 543                                       &priv->fw_ucode, false);
 544         if (rc) {
 545                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 546                        pci_name(priv->pdev), fw_image);
 547                 mwl8k_release_fw(&priv->fw_helper);
 548                 return rc;
 549         }
 550
 551         return 0;
 552 }
 553
 554 struct mwl8k_cmd_pkt {
 555         __le16  code;
 556         __le16  length;
 557         __u8    seq_num;
 558         __u8    macid;
 559         __le16  result;
 560         char    payload[0];
 561 } __packed;
 562
 563 /*
 564  * Firmware loading.
 565  */
 566 static int
 567 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 568 {
 569         void __iomem *regs = priv->regs;
 570         dma_addr_t dma_addr;
 571         int loops;
 572
 573         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 574         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 575                 return -ENOMEM;
 576
 577         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 578         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 579         iowrite32(MWL8K_H2A_INT_DOORBELL,
 580                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 581         iowrite32(MWL8K_H2A_INT_DUMMY,
 582                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 583
 584         loops = 1000;
 585         do {
 586                 u32 int_code;
 587
 588                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 589                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 590                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 591                         break;
 592                 }
 593
 594                 cond_resched();
 595                 udelay(1);
 596         } while (--loops);
 597
 598         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 599
 600         return loops ? 0 : -ETIMEDOUT;
 601 }
 602
 603 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 604                                 const u8 *data, size_t length)
 605 {
 606         struct mwl8k_cmd_pkt *cmd;
 607         int done;
 608         int rc = 0;
 609
 610         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 611         if (cmd == NULL)
 612                 return -ENOMEM;
 613
 614         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 615         cmd->seq_num = 0;
 616         cmd->macid = 0;
 617         cmd->result = 0;
 618
 619         done = 0;
 620         while (length) {
 621                 int block_size = length > 256 ? 256 : length;
 622
 623                 memcpy(cmd->payload, data + done, block_size);
 624                 cmd->length = cpu_to_le16(block_size);
 625
 626                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 627                                                 sizeof(*cmd) + block_size);
 628                 if (rc)
 629                         break;
 630
 631                 done += block_size;
 632                 length -= block_size;
 633         }
 634
 635         if (!rc) {
 636                 cmd->length = 0;
 637                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 638         }
 639
 640         kfree(cmd);
 641
 642         return rc;
 643 }
 644
 645 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 646                                 const u8 *data, size_t length)
 647 {
 648         unsigned char *buffer;
 649         int may_continue, rc = 0;
 650         u32 done, prev_block_size;
 651
 652         buffer = kmalloc(1024, GFP_KERNEL);
 653         if (buffer == NULL)
 654                 return -ENOMEM;
 655
 656         done = 0;
 657         prev_block_size = 0;
 658         may_continue = 1000;
 659         while (may_continue > 0) {
 660                 u32 block_size;
 661
 662                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 663                 if (block_size & 1) {
 664                         block_size &= ~1;
 665                         may_continue--;
 666                 } else {
 667                         done += prev_block_size;
 668                         length -= prev_block_size;
 669                 }
 670
 671                 if (block_size > 1024 || block_size > length) {
 672                         rc = -EOVERFLOW;
 673                         break;
 674                 }
 675
 676                 if (length == 0) {
 677                         rc = 0;
 678                         break;
 679                 }
 680
 681                 if (block_size == 0) {
 682                         rc = -EPROTO;
 683                         may_continue--;
 684                         udelay(1);
 685                         continue;
 686                 }
 687
 688                 prev_block_size = block_size;
 689                 memcpy(buffer, data + done, block_size);
 690
 691                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 692                 if (rc)
 693                         break;
 694         }
 695
 696         if (!rc && length != 0)
 697                 rc = -EREMOTEIO;
 698
 699         kfree(buffer);
 700
 701         return rc;
 702 }
 703
 704 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 705 {
 706         struct mwl8k_priv *priv = hw->priv;
 707         const struct firmware *fw = priv->fw_ucode;
 708         int rc;
 709         int loops;
 710
 711         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 712                 const struct firmware *helper = priv->fw_helper;
 713
 714                 if (helper == NULL) {
 715                         printk(KERN_ERR "%s: helper image needed but none "
 716                                "given\n", pci_name(priv->pdev));
 717                         return -EINVAL;
 718                 }
 719
 720                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 721                 if (rc) {
 722                         printk(KERN_ERR "%s: unable to load firmware "
 723                                "helper image\n", pci_name(priv->pdev));
 724                         return rc;
 725                 }
 726                 msleep(20);
 727
 728                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 729         } else {
 730                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 731         }
 732
 733         if (rc) {
 734                 printk(KERN_ERR "%s: unable to load firmware image\n",
 735                        pci_name(priv->pdev));
 736                 return rc;
 737         }
 738
 739         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 740
 741         loops = 500000;
 742         do {
 743                 u32 ready_code;
 744
 745                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 746                 if (ready_code == MWL8K_FWAP_READY) {
 747                         priv->ap_fw = true;
 748                         break;
 749                 } else if (ready_code == MWL8K_FWSTA_READY) {
 750                         priv->ap_fw = false;
 751                         break;
 752                 }
 753
 754                 cond_resched();
 755                 udelay(1);
 756         } while (--loops);
 757
 758         return loops ? 0 : -ETIMEDOUT;
 759 }
 760
 761
 762 /* DMA header used by firmware and hardware.  */
 763 struct mwl8k_dma_data {
 764         __le16 fwlen;
 765         struct ieee80211_hdr wh;
 766         char data[0];
 767 } __packed;
 768
 769 /* Routines to add/remove DMA header from skb.  */
 770 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 771 {
 772         struct mwl8k_dma_data *tr;
 773         int hdrlen;
 774
 775         tr = (struct mwl8k_dma_data *)skb->data;
 776         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 777
 778         if (hdrlen != sizeof(tr->wh)) {
 779                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 780                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 781                         *((__le16 *)(tr->data - 2)) = qos;
 782                 } else {
 783                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 784                 }
 785         }
 786
 787         if (hdrlen != sizeof(*tr))
 788                 skb_pull(skb, sizeof(*tr) - hdrlen);
 789 }
 790
 791 #define REDUCED_TX_HEADROOM     8
 792
 793 static void
 794 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 795                                                 int head_pad, int tail_pad)
 796 {
 797         struct ieee80211_hdr *wh;
 798         int hdrlen;
 799         int reqd_hdrlen;
 800         struct mwl8k_dma_data *tr;
 801
 802         /*
 803          * Add a firmware DMA header; the firmware requires that we
 804          * present a 2-byte payload length followed by a 4-address
 805          * header (without QoS field), followed (optionally) by any
 806          * WEP/ExtIV header (but only filled in for CCMP).
 807          */
 808         wh = (struct ieee80211_hdr *)skb->data;
 809
 810         hdrlen = ieee80211_hdrlen(wh->frame_control);
 811
 812         /*
 813          * Check if skb_resize is required because of
 814          * tx_headroom adjustment.
 815          */
 816         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 817                                                 + REDUCED_TX_HEADROOM))) {
 818                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 819
 820                         wiphy_err(priv->hw->wiphy,
 821                                         "Failed to reallocate TX buffer\n");
 822                         return;
 823                 }
 824                 skb->truesize += REDUCED_TX_HEADROOM;
 825         }
 826
 827         reqd_hdrlen = sizeof(*tr) + head_pad;
 828
 829         if (hdrlen != reqd_hdrlen)
 830                 skb_push(skb, reqd_hdrlen - hdrlen);
 831
 832         if (ieee80211_is_data_qos(wh->frame_control))
 833                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 834
 835         tr = (struct mwl8k_dma_data *)skb->data;
 836         if (wh != &tr->wh)
 837                 memmove(&tr->wh, wh, hdrlen);
 838         if (hdrlen != sizeof(tr->wh))
 839                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 840
 841         /*
 842          * Firmware length is the length of the fully formed "802.11
 843          * payload".  That is, everything except for the 802.11 header.
 844          * This includes all crypto material including the MIC.
 845          */
 846         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 847 }
 848
 849 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 850                 struct sk_buff *skb)
 851 {
 852         struct ieee80211_hdr *wh;
 853         struct ieee80211_tx_info *tx_info;
 854         struct ieee80211_key_conf *key_conf;
 855         int data_pad;
 856         int head_pad = 0;
 857
 858         wh = (struct ieee80211_hdr *)skb->data;
 859
 860         tx_info = IEEE80211_SKB_CB(skb);
 861
 862         key_conf = NULL;
 863         if (ieee80211_is_data(wh->frame_control))
 864                 key_conf = tx_info->control.hw_key;
 865
 866         /*
 867          * Make sure the packet header is in the DMA header format (4-address
 868          * without QoS), and add head & tail padding when HW crypto is enabled.
 869          *
 870          * We have the following trailer padding requirements:
 871          * - WEP: 4 trailer bytes (ICV)
 872          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 873          * - CCMP: 8 trailer bytes (MIC)
 874          */
 875         data_pad = 0;
 876         if (key_conf != NULL) {
 877                 head_pad = key_conf->iv_len;
 878                 switch (key_conf->cipher) {
 879                 case WLAN_CIPHER_SUITE_WEP40:
 880                 case WLAN_CIPHER_SUITE_WEP104:
 881                         data_pad = 4;
 882                         break;
 883                 case WLAN_CIPHER_SUITE_TKIP:
 884                         data_pad = 12;
 885                         break;
 886                 case WLAN_CIPHER_SUITE_CCMP:
 887                         data_pad = 8;
 888                         break;
 889                 }
 890         }
 891         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 892 }
 893
 894 /*
 895  * Packet reception for 88w8366 AP firmware.
 896  */
 897 struct mwl8k_rxd_8366_ap {
 898         __le16 pkt_len;
 899         __u8 sq2;
 900         __u8 rate;
 901         __le32 pkt_phys_addr;
 902         __le32 next_rxd_phys_addr;
 903         __le16 qos_control;
 904         __le16 htsig2;
 905         __le32 hw_rssi_info;
 906         __le32 hw_noise_floor_info;
 907         __u8 noise_floor;
 908         __u8 pad0[3];
 909         __u8 rssi;
 910         __u8 rx_status;
 911         __u8 channel;
 912         __u8 rx_ctrl;
 913 } __packed;
 914
 915 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 916 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 917 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 918
 919 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 920
 921 /* 8366 AP rx_status bits */
 922 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 923 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 924 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 925 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 926 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 927
 928 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 929 {
 930         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 931
 932         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 933         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 934 }
 935
 936 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 937 {
 938         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 939
 940         rxd->pkt_len = cpu_to_le16(len);
 941         rxd->pkt_phys_addr = cpu_to_le32(addr);
 942         wmb();
 943         rxd->rx_ctrl = 0;
 944 }
 945
 946 static int
 947 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 948                           __le16 *qos, s8 *noise)
 949 {
 950         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 951
 952         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 953                 return -1;
 954         rmb();
 955
 956         memset(status, 0, sizeof(*status));
 957
 958         status->signal = -rxd->rssi;
 959         *noise = -rxd->noise_floor;
 960
 961         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 962                 status->flag |= RX_FLAG_HT;
 963                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 964                         status->flag |= RX_FLAG_40MHZ;
 965                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 966         } else {
 967                 int i;
 968
 969                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 970                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 971                                 status->rate_idx = i;
 972                                 break;
 973                         }
 974                 }
 975         }
 976
 977         if (rxd->channel > 14) {
 978                 status->band = IEEE80211_BAND_5GHZ;
 979                 if (!(status->flag & RX_FLAG_HT))
 980                         status->rate_idx -= 5;
 981         } else {
 982                 status->band = IEEE80211_BAND_2GHZ;
 983         }
 984         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 985                                                       status->band);
 986
 987         *qos = rxd->qos_control;
 988
 989         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 990             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 991             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 992                 status->flag |= RX_FLAG_MMIC_ERROR;
 993
 994         return le16_to_cpu(rxd->pkt_len);
 995 }
 996
 997 static struct rxd_ops rxd_8366_ap_ops = {
 998         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 999         .rxd_init       = mwl8k_rxd_8366_ap_init,
1000         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
1001         .rxd_process    = mwl8k_rxd_8366_ap_process,
1002 };
1003
1004 /*
1005  * Packet reception for STA firmware.
1006  */
1007 struct mwl8k_rxd_sta {
1008         __le16 pkt_len;
1009         __u8 link_quality;
1010         __u8 noise_level;
1011         __le32 pkt_phys_addr;
1012         __le32 next_rxd_phys_addr;
1013         __le16 qos_control;
1014         __le16 rate_info;
1015         __le32 pad0[4];
1016         __u8 rssi;
1017         __u8 channel;
1018         __le16 pad1;
1019         __u8 rx_ctrl;
1020         __u8 rx_status;
1021         __u8 pad2[2];
1022 } __packed;
1023
1024 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1025 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1026 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1027 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1028 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1029 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1030
1031 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1032 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1033 /* ICV=0 or MIC=1 */
1034 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1035 /* Key is uploaded only in failure case */
1036 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1037
1038 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1039 {
1040         struct mwl8k_rxd_sta *rxd = _rxd;
1041
1042         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1043         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1044 }
1045
1046 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1047 {
1048         struct mwl8k_rxd_sta *rxd = _rxd;
1049
1050         rxd->pkt_len = cpu_to_le16(len);
1051         rxd->pkt_phys_addr = cpu_to_le32(addr);
1052         wmb();
1053         rxd->rx_ctrl = 0;
1054 }
1055
1056 static int
1057 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1058                        __le16 *qos, s8 *noise)
1059 {
1060         struct mwl8k_rxd_sta *rxd = _rxd;
1061         u16 rate_info;
1062
1063         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1064                 return -1;
1065         rmb();
1066
1067         rate_info = le16_to_cpu(rxd->rate_info);
1068
1069         memset(status, 0, sizeof(*status));
1070
1071         status->signal = -rxd->rssi;
1072         *noise = -rxd->noise_level;
1073         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1074         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1075
1076         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1077                 status->flag |= RX_FLAG_SHORTPRE;
1078         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1079                 status->flag |= RX_FLAG_40MHZ;
1080         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1081                 status->flag |= RX_FLAG_SHORT_GI;
1082         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1083                 status->flag |= RX_FLAG_HT;
1084
1085         if (rxd->channel > 14) {
1086                 status->band = IEEE80211_BAND_5GHZ;
1087                 if (!(status->flag & RX_FLAG_HT))
1088                         status->rate_idx -= 5;
1089         } else {
1090                 status->band = IEEE80211_BAND_2GHZ;
1091         }
1092         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1093                                                       status->band);
1094
1095         *qos = rxd->qos_control;
1096         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1097             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1098                 status->flag |= RX_FLAG_MMIC_ERROR;
1099
1100         return le16_to_cpu(rxd->pkt_len);
1101 }
1102
1103 static struct rxd_ops rxd_sta_ops = {
1104         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1105         .rxd_init       = mwl8k_rxd_sta_init,
1106         .rxd_refill     = mwl8k_rxd_sta_refill,
1107         .rxd_process    = mwl8k_rxd_sta_process,
1108 };
1109
1110
1111 #define MWL8K_RX_DESCS          256
1112 #define MWL8K_RX_MAXSZ          3800
1113
1114 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1115 {
1116         struct mwl8k_priv *priv = hw->priv;
1117         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1118         int size;
1119         int i;
1120
1121         rxq->rxd_count = 0;
1122         rxq->head = 0;
1123         rxq->tail = 0;
1124
1125         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1126
1127         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1128         if (rxq->rxd == NULL) {
1129                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1130                 return -ENOMEM;
1131         }
1132         memset(rxq->rxd, 0, size);
1133
1134         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1135         if (rxq->buf == NULL) {
1136                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1137                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1138                 return -ENOMEM;
1139         }
1140
1141         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1142                 int desc_size;
1143                 void *rxd;
1144                 int nexti;
1145                 dma_addr_t next_dma_addr;
1146
1147                 desc_size = priv->rxd_ops->rxd_size;
1148                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1149
1150                 nexti = i + 1;
1151                 if (nexti == MWL8K_RX_DESCS)
1152                         nexti = 0;
1153                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1154
1155                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1156         }
1157
1158         return 0;
1159 }
1160
1161 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1162 {
1163         struct mwl8k_priv *priv = hw->priv;
1164         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1165         int refilled;
1166
1167         refilled = 0;
1168         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1169                 struct sk_buff *skb;
1170                 dma_addr_t addr;
1171                 int rx;
1172                 void *rxd;
1173
1174                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1175                 if (skb == NULL)
1176                         break;
1177
1178                 addr = pci_map_single(priv->pdev, skb->data,
1179                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1180
1181                 rxq->rxd_count++;
1182                 rx = rxq->tail++;
1183                 if (rxq->tail == MWL8K_RX_DESCS)
1184                         rxq->tail = 0;
1185                 rxq->buf[rx].skb = skb;
1186                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1187
1188                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1189                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1190
1191                 refilled++;
1192         }
1193
1194         return refilled;
1195 }
1196
1197 /* Must be called only when the card's reception is completely halted */
1198 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1199 {
1200         struct mwl8k_priv *priv = hw->priv;
1201         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1202         int i;
1203
1204         if (rxq->rxd == NULL)
1205                 return;
1206
1207         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1208                 if (rxq->buf[i].skb != NULL) {
1209                         pci_unmap_single(priv->pdev,
1210                                          dma_unmap_addr(&rxq->buf[i], dma),
1211                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1212                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1213
1214                         kfree_skb(rxq->buf[i].skb);
1215                         rxq->buf[i].skb = NULL;
1216                 }
1217         }
1218
1219         kfree(rxq->buf);
1220         rxq->buf = NULL;
1221
1222         pci_free_consistent(priv->pdev,
1223                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1224                             rxq->rxd, rxq->rxd_dma);
1225         rxq->rxd = NULL;
1226 }
1227
1228
1229 /*
1230  * Scan a list of BSSIDs to process for finalize join.
1231  * Allows for extension to process multiple BSSIDs.
1232  */
1233 static inline int
1234 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1235 {
1236         return priv->capture_beacon &&
1237                 ieee80211_is_beacon(wh->frame_control) &&
1238                 ether_addr_equal(wh->addr3, priv->capture_bssid);
1239 }
1240
1241 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1242                                      struct sk_buff *skb)
1243 {
1244         struct mwl8k_priv *priv = hw->priv;
1245
1246         priv->capture_beacon = false;
1247         memset(priv->capture_bssid, 0, ETH_ALEN);
1248
1249         /*
1250          * Use GFP_ATOMIC as rxq_process is called from
1251          * the primary interrupt handler, memory allocation call
1252          * must not sleep.
1253          */
1254         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1255         if (priv->beacon_skb != NULL)
1256                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1257 }
1258
1259 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1260                                                    u8 *bssid)
1261 {
1262         struct mwl8k_vif *mwl8k_vif;
1263
1264         list_for_each_entry(mwl8k_vif,
1265                             vif_list, list) {
1266                 if (memcmp(bssid, mwl8k_vif->bssid,
1267                            ETH_ALEN) == 0)
1268                         return mwl8k_vif;
1269         }
1270
1271         return NULL;
1272 }
1273
1274 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1275 {
1276         struct mwl8k_priv *priv = hw->priv;
1277         struct mwl8k_vif *mwl8k_vif = NULL;
1278         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1279         int processed;
1280
1281         processed = 0;
1282         while (rxq->rxd_count && limit--) {
1283                 struct sk_buff *skb;
1284                 void *rxd;
1285                 int pkt_len;
1286                 struct ieee80211_rx_status status;
1287                 struct ieee80211_hdr *wh;
1288                 __le16 qos;
1289
1290                 skb = rxq->buf[rxq->head].skb;
1291                 if (skb == NULL)
1292                         break;
1293
1294                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1295
1296                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1297                                                         &priv->noise);
1298                 if (pkt_len < 0)
1299                         break;
1300
1301                 rxq->buf[rxq->head].skb = NULL;
1302
1303                 pci_unmap_single(priv->pdev,
1304                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1305                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1306                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1307
1308                 rxq->head++;
1309                 if (rxq->head == MWL8K_RX_DESCS)
1310                         rxq->head = 0;
1311
1312                 rxq->rxd_count--;
1313
1314                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1315
1316                 /*
1317                  * Check for a pending join operation.  Save a
1318                  * copy of the beacon and schedule a tasklet to
1319                  * send a FINALIZE_JOIN command to the firmware.
1320                  */
1321                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1322                         mwl8k_save_beacon(hw, skb);
1323
1324                 if (ieee80211_has_protected(wh->frame_control)) {
1325
1326                         /* Check if hw crypto has been enabled for
1327                          * this bss. If yes, set the status flags
1328                          * accordingly
1329                          */
1330                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1331                                                                 wh->addr1);
1332
1333                         if (mwl8k_vif != NULL &&
1334                             mwl8k_vif->is_hw_crypto_enabled) {
1335                                 /*
1336                                  * When MMIC ERROR is encountered
1337                                  * by the firmware, payload is
1338                                  * dropped and only 32 bytes of
1339                                  * mwl8k Firmware header is sent
1340                                  * to the host.
1341                                  *
1342                                  * We need to add four bytes of
1343                                  * key information.  In it
1344                                  * MAC80211 expects keyidx set to
1345                                  * 0 for triggering Counter
1346                                  * Measure of MMIC failure.
1347                                  */
1348                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1349                                         struct mwl8k_dma_data *tr;
1350                                         tr = (struct mwl8k_dma_data *)skb->data;
1351                                         memset((void *)&(tr->data), 0, 4);
1352                                         pkt_len += 4;
1353                                 }
1354
1355                                 if (!ieee80211_is_auth(wh->frame_control))
1356                                         status.flag |= RX_FLAG_IV_STRIPPED |
1357                                                        RX_FLAG_DECRYPTED |
1358                                                        RX_FLAG_MMIC_STRIPPED;
1359                         }
1360                 }
1361
1362                 skb_put(skb, pkt_len);
1363                 mwl8k_remove_dma_header(skb, qos);
1364                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1365                 ieee80211_rx_irqsafe(hw, skb);
1366
1367                 processed++;
1368         }
1369
1370         return processed;
1371 }
1372
1373
1374 /*
1375  * Packet transmission.
1376  */
1377
1378 #define MWL8K_TXD_STATUS_OK                     0x00000001
1379 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1380 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1381 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1382 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1383
1384 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1385 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1386 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1387 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1388 #define MWL8K_QOS_EOSP                          0x0010
1389
1390 struct mwl8k_tx_desc {
1391         __le32 status;
1392         __u8 data_rate;
1393         __u8 tx_priority;
1394         __le16 qos_control;
1395         __le32 pkt_phys_addr;
1396         __le16 pkt_len;
1397         __u8 dest_MAC_addr[ETH_ALEN];
1398         __le32 next_txd_phys_addr;
1399         __le32 timestamp;
1400         __le16 rate_info;
1401         __u8 peer_id;
1402         __u8 tx_frag_cnt;
1403 } __packed;
1404
1405 #define MWL8K_TX_DESCS          128
1406
1407 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1408 {
1409         struct mwl8k_priv *priv = hw->priv;
1410         struct mwl8k_tx_queue *txq = priv->txq + index;
1411         int size;
1412         int i;
1413
1414         txq->len = 0;
1415         txq->head = 0;
1416         txq->tail = 0;
1417
1418         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1419
1420         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1421         if (txq->txd == NULL) {
1422                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1423                 return -ENOMEM;
1424         }
1425         memset(txq->txd, 0, size);
1426
1427         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1428         if (txq->skb == NULL) {
1429                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1430                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1431                 return -ENOMEM;
1432         }
1433
1434         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1435                 struct mwl8k_tx_desc *tx_desc;
1436                 int nexti;
1437
1438                 tx_desc = txq->txd + i;
1439                 nexti = (i + 1) % MWL8K_TX_DESCS;
1440
1441                 tx_desc->status = 0;
1442                 tx_desc->next_txd_phys_addr =
1443                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1444         }
1445
1446         return 0;
1447 }
1448
1449 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1450 {
1451         iowrite32(MWL8K_H2A_INT_PPA_READY,
1452                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1453         iowrite32(MWL8K_H2A_INT_DUMMY,
1454                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1455         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1456 }
1457
1458 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1459 {
1460         struct mwl8k_priv *priv = hw->priv;
1461         int i;
1462
1463         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1464                 struct mwl8k_tx_queue *txq = priv->txq + i;
1465                 int fw_owned = 0;
1466                 int drv_owned = 0;
1467                 int unused = 0;
1468                 int desc;
1469
1470                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1471                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1472                         u32 status;
1473
1474                         status = le32_to_cpu(tx_desc->status);
1475                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1476                                 fw_owned++;
1477                         else
1478                                 drv_owned++;
1479
1480                         if (tx_desc->pkt_len == 0)
1481                                 unused++;
1482                 }
1483
1484                 wiphy_err(hw->wiphy,
1485                           "txq[%d] len=%d head=%d tail=%d "
1486                           "fw_owned=%d drv_owned=%d unused=%d\n",
1487                           i,
1488                           txq->len, txq->head, txq->tail,
1489                           fw_owned, drv_owned, unused);
1490         }
1491 }
1492
1493 /*
1494  * Must be called with priv->fw_mutex held and tx queues stopped.
1495  */
1496 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1497
1498 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1499 {
1500         struct mwl8k_priv *priv = hw->priv;
1501         DECLARE_COMPLETION_ONSTACK(tx_wait);
1502         int retry;
1503         int rc;
1504
1505         might_sleep();
1506
1507         /* Since fw restart is in progress, allow only the firmware
1508          * commands from the restart code and block the other
1509          * commands since they are going to fail in any case since
1510          * the firmware has crashed
1511          */
1512         if (priv->hw_restart_in_progress) {
1513                 if (priv->hw_restart_owner == current)
1514                         return 0;
1515                 else
1516                         return -EBUSY;
1517         }
1518
1519         /*
1520          * The TX queues are stopped at this point, so this test
1521          * doesn't need to take ->tx_lock.
1522          */
1523         if (!priv->pending_tx_pkts)
1524                 return 0;
1525
1526         retry = 0;
1527         rc = 0;
1528
1529         spin_lock_bh(&priv->tx_lock);
1530         priv->tx_wait = &tx_wait;
1531         while (!rc) {
1532                 int oldcount;
1533                 unsigned long timeout;
1534
1535                 oldcount = priv->pending_tx_pkts;
1536
1537                 spin_unlock_bh(&priv->tx_lock);
1538                 timeout = wait_for_completion_timeout(&tx_wait,
1539                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1540                 spin_lock_bh(&priv->tx_lock);
1541
1542                 if (timeout) {
1543                         WARN_ON(priv->pending_tx_pkts);
1544                         if (retry)
1545                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1546                         break;
1547                 }
1548
1549                 if (priv->pending_tx_pkts < oldcount) {
1550                         wiphy_notice(hw->wiphy,
1551                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1552                                      oldcount, priv->pending_tx_pkts);
1553                         retry = 1;
1554                         continue;
1555                 }
1556
1557                 priv->tx_wait = NULL;
1558
1559                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1560                           MWL8K_TX_WAIT_TIMEOUT_MS);
1561                 mwl8k_dump_tx_rings(hw);
1562                 priv->hw_restart_in_progress = true;
1563                 ieee80211_queue_work(hw, &priv->fw_reload);
1564
1565                 rc = -ETIMEDOUT;
1566         }
1567         spin_unlock_bh(&priv->tx_lock);
1568
1569         return rc;
1570 }
1571
1572 #define MWL8K_TXD_SUCCESS(status)                               \
1573         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1574                      MWL8K_TXD_STATUS_OK_RETRY |                \
1575                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1576
1577 static int mwl8k_tid_queue_mapping(u8 tid)
1578 {
1579         BUG_ON(tid > 7);
1580
1581         switch (tid) {
1582         case 0:
1583         case 3:
1584                 return IEEE80211_AC_BE;
1585                 break;
1586         case 1:
1587         case 2:
1588                 return IEEE80211_AC_BK;
1589                 break;
1590         case 4:
1591         case 5:
1592                 return IEEE80211_AC_VI;
1593                 break;
1594         case 6:
1595         case 7:
1596                 return IEEE80211_AC_VO;
1597                 break;
1598         default:
1599                 return -1;
1600                 break;
1601         }
1602 }
1603
1604 /* The firmware will fill in the rate information
1605  * for each packet that gets queued in the hardware
1606  * and these macros will interpret that info.
1607  */
1608
1609 #define RI_FORMAT(a)              (a & 0x0001)
1610 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1611
1612 static int
1613 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1614 {
1615         struct mwl8k_priv *priv = hw->priv;
1616         struct mwl8k_tx_queue *txq = priv->txq + index;
1617         int processed;
1618
1619         processed = 0;
1620         while (txq->len > 0 && limit--) {
1621                 int tx;
1622                 struct mwl8k_tx_desc *tx_desc;
1623                 unsigned long addr;
1624                 int size;
1625                 struct sk_buff *skb;
1626                 struct ieee80211_tx_info *info;
1627                 u32 status;
1628                 struct ieee80211_sta *sta;
1629                 struct mwl8k_sta *sta_info = NULL;
1630                 u16 rate_info;
1631                 struct ieee80211_hdr *wh;
1632
1633                 tx = txq->head;
1634                 tx_desc = txq->txd + tx;
1635
1636                 status = le32_to_cpu(tx_desc->status);
1637
1638                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1639                         if (!force)
1640                                 break;
1641                         tx_desc->status &=
1642                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1643                 }
1644
1645                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1646                 BUG_ON(txq->len == 0);
1647                 txq->len--;
1648                 priv->pending_tx_pkts--;
1649
1650                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1651                 size = le16_to_cpu(tx_desc->pkt_len);
1652                 skb = txq->skb[tx];
1653                 txq->skb[tx] = NULL;
1654
1655                 BUG_ON(skb == NULL);
1656                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1657
1658                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1659
1660                 wh = (struct ieee80211_hdr *) skb->data;
1661
1662                 /* Mark descriptor as unused */
1663                 tx_desc->pkt_phys_addr = 0;
1664                 tx_desc->pkt_len = 0;
1665
1666                 info = IEEE80211_SKB_CB(skb);
1667                 if (ieee80211_is_data(wh->frame_control)) {
1668                         rcu_read_lock();
1669                         sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1670                                                            wh->addr2);
1671                         if (sta) {
1672                                 sta_info = MWL8K_STA(sta);
1673                                 BUG_ON(sta_info == NULL);
1674                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1675                                 /* If rate is < 6.5 Mpbs for an ht station
1676                                  * do not form an ampdu. If the station is a
1677                                  * legacy station (format = 0), do not form an
1678                                  * ampdu
1679                                  */
1680                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1681                                     RI_FORMAT(rate_info) == 0) {
1682                                         sta_info->is_ampdu_allowed = false;
1683                                 } else {
1684                                         sta_info->is_ampdu_allowed = true;
1685                                 }
1686                         }
1687                         rcu_read_unlock();
1688                 }
1689
1690                 ieee80211_tx_info_clear_status(info);
1691
1692                 /* Rate control is happening in the firmware.
1693                  * Ensure no tx rate is being reported.
1694                  */
1695                 info->status.rates[0].idx = -1;
1696                 info->status.rates[0].count = 1;
1697
1698                 if (MWL8K_TXD_SUCCESS(status))
1699                         info->flags |= IEEE80211_TX_STAT_ACK;
1700
1701                 ieee80211_tx_status_irqsafe(hw, skb);
1702
1703                 processed++;
1704         }
1705
1706         return processed;
1707 }
1708
1709 /* must be called only when the card's transmit is completely halted */
1710 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1711 {
1712         struct mwl8k_priv *priv = hw->priv;
1713         struct mwl8k_tx_queue *txq = priv->txq + index;
1714
1715         if (txq->txd == NULL)
1716                 return;
1717
1718         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1719
1720         kfree(txq->skb);
1721         txq->skb = NULL;
1722
1723         pci_free_consistent(priv->pdev,
1724                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1725                             txq->txd, txq->txd_dma);
1726         txq->txd = NULL;
1727 }
1728
1729 /* caller must hold priv->stream_lock when calling the stream functions */
1730 static struct mwl8k_ampdu_stream *
1731 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1732 {
1733         struct mwl8k_ampdu_stream *stream;
1734         struct mwl8k_priv *priv = hw->priv;
1735         int i;
1736
1737         for (i = 0; i < priv->num_ampdu_queues; i++) {
1738                 stream = &priv->ampdu[i];
1739                 if (stream->state == AMPDU_NO_STREAM) {
1740                         stream->sta = sta;
1741                         stream->state = AMPDU_STREAM_NEW;
1742                         stream->tid = tid;
1743                         stream->idx = i;
1744                         stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1745                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1746                                     sta->addr, tid);
1747                         return stream;
1748                 }
1749         }
1750         return NULL;
1751 }
1752
1753 static int
1754 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1755 {
1756         int ret;
1757
1758         /* if the stream has already been started, don't start it again */
1759         if (stream->state != AMPDU_STREAM_NEW)
1760                 return 0;
1761         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1762         if (ret)
1763                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1764                             "%d\n", stream->sta->addr, stream->tid, ret);
1765         else
1766                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1767                             stream->sta->addr, stream->tid);
1768         return ret;
1769 }
1770
1771 static void
1772 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1773 {
1774         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1775                     stream->tid);
1776         memset(stream, 0, sizeof(*stream));
1777 }
1778
1779 static struct mwl8k_ampdu_stream *
1780 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1781 {
1782         struct mwl8k_priv *priv = hw->priv;
1783         int i;
1784
1785         for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1786                 struct mwl8k_ampdu_stream *stream;
1787                 stream = &priv->ampdu[i];
1788                 if (stream->state == AMPDU_NO_STREAM)
1789                         continue;
1790                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1791                     stream->tid == tid)
1792                         return stream;
1793         }
1794         return NULL;
1795 }
1796
1797 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1798 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1799 {
1800         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1801         struct tx_traffic_info *tx_stats;
1802
1803         BUG_ON(tid >= MWL8K_MAX_TID);
1804         tx_stats = &sta_info->tx_stats[tid];
1805
1806         return sta_info->is_ampdu_allowed &&
1807                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1808 }
1809
1810 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1811 {
1812         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1813         struct tx_traffic_info *tx_stats;
1814
1815         BUG_ON(tid >= MWL8K_MAX_TID);
1816         tx_stats = &sta_info->tx_stats[tid];
1817
1818         if (tx_stats->start_time == 0)
1819                 tx_stats->start_time = jiffies;
1820
1821         /* reset the packet count after each second elapses.  If the number of
1822          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1823          * an ampdu stream to be started.
1824          */
1825         if (jiffies - tx_stats->start_time > HZ) {
1826                 tx_stats->pkts = 0;
1827                 tx_stats->start_time = 0;
1828         } else
1829                 tx_stats->pkts++;
1830 }
1831
1832 static void
1833 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1834 {
1835         struct mwl8k_priv *priv = hw->priv;
1836         struct ieee80211_tx_info *tx_info;
1837         struct mwl8k_vif *mwl8k_vif;
1838         struct ieee80211_sta *sta;
1839         struct ieee80211_hdr *wh;
1840         struct mwl8k_tx_queue *txq;
1841         struct mwl8k_tx_desc *tx;
1842         dma_addr_t dma;
1843         u32 txstatus;
1844         u8 txdatarate;
1845         u16 qos;
1846         int txpriority;
1847         u8 tid = 0;
1848         struct mwl8k_ampdu_stream *stream = NULL;
1849         bool start_ba_session = false;
1850         bool mgmtframe = false;
1851         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1852
1853         wh = (struct ieee80211_hdr *)skb->data;
1854         if (ieee80211_is_data_qos(wh->frame_control))
1855                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1856         else
1857                 qos = 0;
1858
1859         if (ieee80211_is_mgmt(wh->frame_control))
1860                 mgmtframe = true;
1861
1862         if (priv->ap_fw)
1863                 mwl8k_encapsulate_tx_frame(priv, skb);
1864         else
1865                 mwl8k_add_dma_header(priv, skb, 0, 0);
1866
1867         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1868
1869         tx_info = IEEE80211_SKB_CB(skb);
1870         sta = tx_info->control.sta;
1871         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1872
1873         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1874                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1875                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1876                 mwl8k_vif->seqno += 0x10;
1877         }
1878
1879         /* Setup firmware control bit fields for each frame type.  */
1880         txstatus = 0;
1881         txdatarate = 0;
1882         if (ieee80211_is_mgmt(wh->frame_control) ||
1883             ieee80211_is_ctl(wh->frame_control)) {
1884                 txdatarate = 0;
1885                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1886         } else if (ieee80211_is_data(wh->frame_control)) {
1887                 txdatarate = 1;
1888                 if (is_multicast_ether_addr(wh->addr1))
1889                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1890
1891                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1892                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1893                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1894                 else
1895                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1896         }
1897
1898         /* Queue ADDBA request in the respective data queue.  While setting up
1899          * the ampdu stream, mac80211 queues further packets for that
1900          * particular ra/tid pair.  However, packets piled up in the hardware
1901          * for that ra/tid pair will still go out. ADDBA request and the
1902          * related data packets going out from different queues asynchronously
1903          * will cause a shift in the receiver window which might result in
1904          * ampdu packets getting dropped at the receiver after the stream has
1905          * been setup.
1906          */
1907         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1908             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1909             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1910             priv->ap_fw)) {
1911                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1912                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1913                 index = mwl8k_tid_queue_mapping(tid);
1914         }
1915
1916         txpriority = index;
1917
1918         if (priv->ap_fw && sta && sta->ht_cap.ht_supported
1919                         && skb->protocol != cpu_to_be16(ETH_P_PAE)
1920                         && ieee80211_is_data_qos(wh->frame_control)) {
1921                 tid = qos & 0xf;
1922                 mwl8k_tx_count_packet(sta, tid);
1923                 spin_lock(&priv->stream_lock);
1924                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1925                 if (stream != NULL) {
1926                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1927                                 txpriority = stream->txq_idx;
1928                                 index = stream->txq_idx;
1929                         } else if (stream->state == AMPDU_STREAM_NEW) {
1930                                 /* We get here if the driver sends us packets
1931                                  * after we've initiated a stream, but before
1932                                  * our ampdu_action routine has been called
1933                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1934                                  * for the ADDBA request.  So this packet can
1935                                  * go out with no risk of sequence number
1936                                  * mismatch.  No special handling is required.
1937                                  */
1938                         } else {
1939                                 /* Drop packets that would go out after the
1940                                  * ADDBA request was sent but before the ADDBA
1941                                  * response is received.  If we don't do this,
1942                                  * the recipient would probably receive it
1943                                  * after the ADDBA request with SSN 0.  This
1944                                  * will cause the recipient's BA receive window
1945                                  * to shift, which would cause the subsequent
1946                                  * packets in the BA stream to be discarded.
1947                                  * mac80211 queues our packets for us in this
1948                                  * case, so this is really just a safety check.
1949                                  */
1950                                 wiphy_warn(hw->wiphy,
1951                                            "Cannot send packet while ADDBA "
1952                                            "dialog is underway.\n");
1953                                 spin_unlock(&priv->stream_lock);
1954                                 dev_kfree_skb(skb);
1955                                 return;
1956                         }
1957                 } else {
1958                         /* Defer calling mwl8k_start_stream so that the current
1959                          * skb can go out before the ADDBA request.  This
1960                          * prevents sequence number mismatch at the recepient
1961                          * as described above.
1962                          */
1963                         if (mwl8k_ampdu_allowed(sta, tid)) {
1964                                 stream = mwl8k_add_stream(hw, sta, tid);
1965                                 if (stream != NULL)
1966                                         start_ba_session = true;
1967                         }
1968                 }
1969                 spin_unlock(&priv->stream_lock);
1970         }
1971
1972         dma = pci_map_single(priv->pdev, skb->data,
1973                                 skb->len, PCI_DMA_TODEVICE);
1974
1975         if (pci_dma_mapping_error(priv->pdev, dma)) {
1976                 wiphy_debug(hw->wiphy,
1977                             "failed to dma map skb, dropping TX frame.\n");
1978                 if (start_ba_session) {
1979                         spin_lock(&priv->stream_lock);
1980                         mwl8k_remove_stream(hw, stream);
1981                         spin_unlock(&priv->stream_lock);
1982                 }
1983                 dev_kfree_skb(skb);
1984                 return;
1985         }
1986
1987         spin_lock_bh(&priv->tx_lock);
1988
1989         txq = priv->txq + index;
1990
1991         /* Mgmt frames that go out frequently are probe
1992          * responses. Other mgmt frames got out relatively
1993          * infrequently. Hence reserve 2 buffers so that
1994          * other mgmt frames do not get dropped due to an
1995          * already queued probe response in one of the
1996          * reserved buffers.
1997          */
1998
1999         if (txq->len >= MWL8K_TX_DESCS - 2) {
2000                 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2001                         if (start_ba_session) {
2002                                 spin_lock(&priv->stream_lock);
2003                                 mwl8k_remove_stream(hw, stream);
2004                                 spin_unlock(&priv->stream_lock);
2005                         }
2006                         spin_unlock_bh(&priv->tx_lock);
2007                         dev_kfree_skb(skb);
2008                         return;
2009                 }
2010         }
2011
2012         BUG_ON(txq->skb[txq->tail] != NULL);
2013         txq->skb[txq->tail] = skb;
2014
2015         tx = txq->txd + txq->tail;
2016         tx->data_rate = txdatarate;
2017         tx->tx_priority = txpriority;
2018         tx->qos_control = cpu_to_le16(qos);
2019         tx->pkt_phys_addr = cpu_to_le32(dma);
2020         tx->pkt_len = cpu_to_le16(skb->len);
2021         tx->rate_info = 0;
2022         if (!priv->ap_fw && tx_info->control.sta != NULL)
2023                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
2024         else
2025                 tx->peer_id = 0;
2026
2027         if (priv->ap_fw)
2028                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2029                                                 MWL8K_HW_TIMER_REGISTER));
2030
2031         wmb();
2032         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2033
2034         txq->len++;
2035         priv->pending_tx_pkts++;
2036
2037         txq->tail++;
2038         if (txq->tail == MWL8K_TX_DESCS)
2039                 txq->tail = 0;
2040
2041         mwl8k_tx_start(priv);
2042
2043         spin_unlock_bh(&priv->tx_lock);
2044
2045         /* Initiate the ampdu session here */
2046         if (start_ba_session) {
2047                 spin_lock(&priv->stream_lock);
2048                 if (mwl8k_start_stream(hw, stream))
2049                         mwl8k_remove_stream(hw, stream);
2050                 spin_unlock(&priv->stream_lock);
2051         }
2052 }
2053
2054
2055 /*
2056  * Firmware access.
2057  *
2058  * We have the following requirements for issuing firmware commands:
2059  * - Some commands require that the packet transmit path is idle when
2060  *   the command is issued.  (For simplicity, we'll just quiesce the
2061  *   transmit path for every command.)
2062  * - There are certain sequences of commands that need to be issued to
2063  *   the hardware sequentially, with no other intervening commands.
2064  *
2065  * This leads to an implementation of a "firmware lock" as a mutex that
2066  * can be taken recursively, and which is taken by both the low-level
2067  * command submission function (mwl8k_post_cmd) as well as any users of
2068  * that function that require issuing of an atomic sequence of commands,
2069  * and quiesces the transmit path whenever it's taken.
2070  */
2071 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2072 {
2073         struct mwl8k_priv *priv = hw->priv;
2074
2075         if (priv->fw_mutex_owner != current) {
2076                 int rc;
2077
2078                 mutex_lock(&priv->fw_mutex);
2079                 ieee80211_stop_queues(hw);
2080
2081                 rc = mwl8k_tx_wait_empty(hw);
2082                 if (rc) {
2083                         if (!priv->hw_restart_in_progress)
2084                                 ieee80211_wake_queues(hw);
2085
2086                         mutex_unlock(&priv->fw_mutex);
2087
2088                         return rc;
2089                 }
2090
2091                 priv->fw_mutex_owner = current;
2092         }
2093
2094         priv->fw_mutex_depth++;
2095
2096         return 0;
2097 }
2098
2099 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2100 {
2101         struct mwl8k_priv *priv = hw->priv;
2102
2103         if (!--priv->fw_mutex_depth) {
2104                 if (!priv->hw_restart_in_progress)
2105                         ieee80211_wake_queues(hw);
2106
2107                 priv->fw_mutex_owner = NULL;
2108                 mutex_unlock(&priv->fw_mutex);
2109         }
2110 }
2111
2112
2113 /*
2114  * Command processing.
2115  */
2116
2117 /* Timeout firmware commands after 10s */
2118 #define MWL8K_CMD_TIMEOUT_MS    10000
2119
2120 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2121 {
2122         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2123         struct mwl8k_priv *priv = hw->priv;
2124         void __iomem *regs = priv->regs;
2125         dma_addr_t dma_addr;
2126         unsigned int dma_size;
2127         int rc;
2128         unsigned long timeout = 0;
2129         u8 buf[32];
2130
2131         cmd->result = (__force __le16) 0xffff;
2132         dma_size = le16_to_cpu(cmd->length);
2133         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2134                                   PCI_DMA_BIDIRECTIONAL);
2135         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2136                 return -ENOMEM;
2137
2138         rc = mwl8k_fw_lock(hw);
2139         if (rc) {
2140                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2141                                                 PCI_DMA_BIDIRECTIONAL);
2142                 return rc;
2143         }
2144
2145         priv->hostcmd_wait = &cmd_wait;
2146         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2147         iowrite32(MWL8K_H2A_INT_DOORBELL,
2148                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2149         iowrite32(MWL8K_H2A_INT_DUMMY,
2150                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2151
2152         timeout = wait_for_completion_timeout(&cmd_wait,
2153                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2154
2155         priv->hostcmd_wait = NULL;
2156
2157         mwl8k_fw_unlock(hw);
2158
2159         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2160                                         PCI_DMA_BIDIRECTIONAL);
2161
2162         if (!timeout) {
2163                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2164                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2165                           MWL8K_CMD_TIMEOUT_MS);
2166                 rc = -ETIMEDOUT;
2167         } else {
2168                 int ms;
2169
2170                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2171
2172                 rc = cmd->result ? -EINVAL : 0;
2173                 if (rc)
2174                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2175                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2176                                   le16_to_cpu(cmd->result));
2177                 else if (ms > 2000)
2178                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2179                                      mwl8k_cmd_name(cmd->code,
2180                                                     buf, sizeof(buf)),
2181                                      ms);
2182         }
2183
2184         return rc;
2185 }
2186
2187 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2188                                  struct ieee80211_vif *vif,
2189                                  struct mwl8k_cmd_pkt *cmd)
2190 {
2191         if (vif != NULL)
2192                 cmd->macid = MWL8K_VIF(vif)->macid;
2193         return mwl8k_post_cmd(hw, cmd);
2194 }
2195
2196 /*
2197  * Setup code shared between STA and AP firmware images.
2198  */
2199 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2200 {
2201         struct mwl8k_priv *priv = hw->priv;
2202
2203         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2204         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2205
2206         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2207         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2208
2209         priv->band_24.band = IEEE80211_BAND_2GHZ;
2210         priv->band_24.channels = priv->channels_24;
2211         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2212         priv->band_24.bitrates = priv->rates_24;
2213         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2214
2215         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2216 }
2217
2218 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2219 {
2220         struct mwl8k_priv *priv = hw->priv;
2221
2222         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2223         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2224
2225         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2226         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2227
2228         priv->band_50.band = IEEE80211_BAND_5GHZ;
2229         priv->band_50.channels = priv->channels_50;
2230         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2231         priv->band_50.bitrates = priv->rates_50;
2232         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2233
2234         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2235 }
2236
2237 /*
2238  * CMD_GET_HW_SPEC (STA version).
2239  */
2240 struct mwl8k_cmd_get_hw_spec_sta {
2241         struct mwl8k_cmd_pkt header;
2242         __u8 hw_rev;
2243         __u8 host_interface;
2244         __le16 num_mcaddrs;
2245         __u8 perm_addr[ETH_ALEN];
2246         __le16 region_code;
2247         __le32 fw_rev;
2248         __le32 ps_cookie;
2249         __le32 caps;
2250         __u8 mcs_bitmap[16];
2251         __le32 rx_queue_ptr;
2252         __le32 num_tx_queues;
2253         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2254         __le32 caps2;
2255         __le32 num_tx_desc_per_queue;
2256         __le32 total_rxd;
2257 } __packed;
2258
2259 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2260 #define MWL8K_CAP_GREENFIELD            0x08000000
2261 #define MWL8K_CAP_AMPDU                 0x04000000
2262 #define MWL8K_CAP_RX_STBC               0x01000000
2263 #define MWL8K_CAP_TX_STBC               0x00800000
2264 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2265 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2266 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2267 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2268 #define MWL8K_CAP_DELAY_BA              0x00003000
2269 #define MWL8K_CAP_MIMO                  0x00000200
2270 #define MWL8K_CAP_40MHZ                 0x00000100
2271 #define MWL8K_CAP_BAND_MASK             0x00000007
2272 #define MWL8K_CAP_5GHZ                  0x00000004
2273 #define MWL8K_CAP_2GHZ4                 0x00000001
2274
2275 static void
2276 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2277                   struct ieee80211_supported_band *band, u32 cap)
2278 {
2279         int rx_streams;
2280         int tx_streams;
2281
2282         band->ht_cap.ht_supported = 1;
2283
2284         if (cap & MWL8K_CAP_MAX_AMSDU)
2285                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2286         if (cap & MWL8K_CAP_GREENFIELD)
2287                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2288         if (cap & MWL8K_CAP_AMPDU) {
2289                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2290                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2291                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2292         }
2293         if (cap & MWL8K_CAP_RX_STBC)
2294                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2295         if (cap & MWL8K_CAP_TX_STBC)
2296                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2297         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2298                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2299         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2300                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2301         if (cap & MWL8K_CAP_DELAY_BA)
2302                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2303         if (cap & MWL8K_CAP_40MHZ)
2304                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2305
2306         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2307         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2308
2309         band->ht_cap.mcs.rx_mask[0] = 0xff;
2310         if (rx_streams >= 2)
2311                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2312         if (rx_streams >= 3)
2313                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2314         band->ht_cap.mcs.rx_mask[4] = 0x01;
2315         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2316
2317         if (rx_streams != tx_streams) {
2318                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2319                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2320                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2321         }
2322 }
2323
2324 static void
2325 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2326 {
2327         struct mwl8k_priv *priv = hw->priv;
2328
2329         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2330                 mwl8k_setup_2ghz_band(hw);
2331                 if (caps & MWL8K_CAP_MIMO)
2332                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2333         }
2334
2335         if (caps & MWL8K_CAP_5GHZ) {
2336                 mwl8k_setup_5ghz_band(hw);
2337                 if (caps & MWL8K_CAP_MIMO)
2338                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2339         }
2340 }
2341
2342 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2343 {
2344         struct mwl8k_priv *priv = hw->priv;
2345         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2346         int rc;
2347         int i;
2348
2349         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2350         if (cmd == NULL)
2351                 return -ENOMEM;
2352
2353         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2354         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2355
2356         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2357         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2358         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2359         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2360         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2361                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2362         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2363         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2364
2365         rc = mwl8k_post_cmd(hw, &cmd->header);
2366
2367         if (!rc) {
2368                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2369                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2370                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2371                 priv->hw_rev = cmd->hw_rev;
2372                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2373                 priv->ap_macids_supported = 0x00000000;
2374                 priv->sta_macids_supported = 0x00000001;
2375         }
2376
2377         kfree(cmd);
2378         return rc;
2379 }
2380
2381 /*
2382  * CMD_GET_HW_SPEC (AP version).
2383  */
2384 struct mwl8k_cmd_get_hw_spec_ap {
2385         struct mwl8k_cmd_pkt header;
2386         __u8 hw_rev;
2387         __u8 host_interface;
2388         __le16 num_wcb;
2389         __le16 num_mcaddrs;
2390         __u8 perm_addr[ETH_ALEN];
2391         __le16 region_code;
2392         __le16 num_antenna;
2393         __le32 fw_rev;
2394         __le32 wcbbase0;
2395         __le32 rxwrptr;
2396         __le32 rxrdptr;
2397         __le32 ps_cookie;
2398         __le32 wcbbase1;
2399         __le32 wcbbase2;
2400         __le32 wcbbase3;
2401         __le32 fw_api_version;
2402         __le32 caps;
2403         __le32 num_of_ampdu_queues;
2404         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2405 } __packed;
2406
2407 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2408 {
2409         struct mwl8k_priv *priv = hw->priv;
2410         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2411         int rc, i;
2412         u32 api_version;
2413
2414         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2415         if (cmd == NULL)
2416                 return -ENOMEM;
2417
2418         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2419         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2420
2421         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2422         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2423
2424         rc = mwl8k_post_cmd(hw, &cmd->header);
2425
2426         if (!rc) {
2427                 int off;
2428
2429                 api_version = le32_to_cpu(cmd->fw_api_version);
2430                 if (priv->device_info->fw_api_ap != api_version) {
2431                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2432                                "  Expected %d got %d.\n", MWL8K_NAME,
2433                                priv->device_info->part_name,
2434                                priv->device_info->fw_api_ap,
2435                                api_version);
2436                         rc = -EINVAL;
2437                         goto done;
2438                 }
2439                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2440                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2441                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2442                 priv->hw_rev = cmd->hw_rev;
2443                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2444                 priv->ap_macids_supported = 0x000000ff;
2445                 priv->sta_macids_supported = 0x00000000;
2446                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2447                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2448                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2449                                    " but we only support %d.\n",
2450                                    priv->num_ampdu_queues,
2451                                    MWL8K_MAX_AMPDU_QUEUES);
2452                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2453                 }
2454                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2455                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2456
2457                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2458                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2459
2460                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2461                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2462                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2463                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2464
2465                 for (i = 0; i < priv->num_ampdu_queues; i++)
2466                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2467                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2468         }
2469
2470 done:
2471         kfree(cmd);
2472         return rc;
2473 }
2474
2475 /*
2476  * CMD_SET_HW_SPEC.
2477  */
2478 struct mwl8k_cmd_set_hw_spec {
2479         struct mwl8k_cmd_pkt header;
2480         __u8 hw_rev;
2481         __u8 host_interface;
2482         __le16 num_mcaddrs;
2483         __u8 perm_addr[ETH_ALEN];
2484         __le16 region_code;
2485         __le32 fw_rev;
2486         __le32 ps_cookie;
2487         __le32 caps;
2488         __le32 rx_queue_ptr;
2489         __le32 num_tx_queues;
2490         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2491         __le32 flags;
2492         __le32 num_tx_desc_per_queue;
2493         __le32 total_rxd;
2494 } __packed;
2495
2496 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2497  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2498  * the packets that are queued for more than 500ms, will be dropped in the
2499  * hardware. This helps minimizing the issues caused due to head-of-line
2500  * blocking where a slow client can hog the bandwidth and affect traffic to a
2501  * faster client.
2502  */
2503 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2504 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2505 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2506 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2507 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2508
2509 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2510 {
2511         struct mwl8k_priv *priv = hw->priv;
2512         struct mwl8k_cmd_set_hw_spec *cmd;
2513         int rc;
2514         int i;
2515
2516         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2517         if (cmd == NULL)
2518                 return -ENOMEM;
2519
2520         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2521         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2522
2523         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2524         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2525         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2526
2527         /*
2528          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2529          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2530          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2531          * priority is interpreted the right way in firmware.
2532          */
2533         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2534                 int j = mwl8k_tx_queues(priv) - 1 - i;
2535                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2536         }
2537
2538         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2539                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2540                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2541                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2542                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2543         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2544         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2545
2546         rc = mwl8k_post_cmd(hw, &cmd->header);
2547         kfree(cmd);
2548
2549         return rc;
2550 }
2551
2552 /*
2553  * CMD_MAC_MULTICAST_ADR.
2554  */
2555 struct mwl8k_cmd_mac_multicast_adr {
2556         struct mwl8k_cmd_pkt header;
2557         __le16 action;
2558         __le16 numaddr;
2559         __u8 addr[0][ETH_ALEN];
2560 };
2561
2562 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2563 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2564 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2565 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2566
2567 static struct mwl8k_cmd_pkt *
2568 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2569                               struct netdev_hw_addr_list *mc_list)
2570 {
2571         struct mwl8k_priv *priv = hw->priv;
2572         struct mwl8k_cmd_mac_multicast_adr *cmd;
2573         int size;
2574         int mc_count = 0;
2575
2576         if (mc_list)
2577                 mc_count = netdev_hw_addr_list_count(mc_list);
2578
2579         if (allmulti || mc_count > priv->num_mcaddrs) {
2580                 allmulti = 1;
2581                 mc_count = 0;
2582         }
2583
2584         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2585
2586         cmd = kzalloc(size, GFP_ATOMIC);
2587         if (cmd == NULL)
2588                 return NULL;
2589
2590         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2591         cmd->header.length = cpu_to_le16(size);
2592         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2593                                   MWL8K_ENABLE_RX_BROADCAST);
2594
2595         if (allmulti) {
2596                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2597         } else if (mc_count) {
2598                 struct netdev_hw_addr *ha;
2599                 int i = 0;
2600
2601                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2602                 cmd->numaddr = cpu_to_le16(mc_count);
2603                 netdev_hw_addr_list_for_each(ha, mc_list) {
2604                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2605                 }
2606         }
2607
2608         return &cmd->header;
2609 }
2610
2611 /*
2612  * CMD_GET_STAT.
2613  */
2614 struct mwl8k_cmd_get_stat {
2615         struct mwl8k_cmd_pkt header;
2616         __le32 stats[64];
2617 } __packed;
2618
2619 #define MWL8K_STAT_ACK_FAILURE  9
2620 #define MWL8K_STAT_RTS_FAILURE  12
2621 #define MWL8K_STAT_FCS_ERROR    24
2622 #define MWL8K_STAT_RTS_SUCCESS  11
2623
2624 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2625                               struct ieee80211_low_level_stats *stats)
2626 {
2627         struct mwl8k_cmd_get_stat *cmd;
2628         int rc;
2629
2630         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2631         if (cmd == NULL)
2632                 return -ENOMEM;
2633
2634         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2635         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2636
2637         rc = mwl8k_post_cmd(hw, &cmd->header);
2638         if (!rc) {
2639                 stats->dot11ACKFailureCount =
2640                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2641                 stats->dot11RTSFailureCount =
2642                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2643                 stats->dot11FCSErrorCount =
2644                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2645                 stats->dot11RTSSuccessCount =
2646                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2647         }
2648         kfree(cmd);
2649
2650         return rc;
2651 }
2652
2653 /*
2654  * CMD_RADIO_CONTROL.
2655  */
2656 struct mwl8k_cmd_radio_control {
2657         struct mwl8k_cmd_pkt header;
2658         __le16 action;
2659         __le16 control;
2660         __le16 radio_on;
2661 } __packed;
2662
2663 static int
2664 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2665 {
2666         struct mwl8k_priv *priv = hw->priv;
2667         struct mwl8k_cmd_radio_control *cmd;
2668         int rc;
2669
2670         if (enable == priv->radio_on && !force)
2671                 return 0;
2672
2673         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2674         if (cmd == NULL)
2675                 return -ENOMEM;
2676
2677         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2678         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2679         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2680         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2681         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2682
2683         rc = mwl8k_post_cmd(hw, &cmd->header);
2684         kfree(cmd);
2685
2686         if (!rc)
2687                 priv->radio_on = enable;
2688
2689         return rc;
2690 }
2691
2692 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2693 {
2694         return mwl8k_cmd_radio_control(hw, 0, 0);
2695 }
2696
2697 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2698 {
2699         return mwl8k_cmd_radio_control(hw, 1, 0);
2700 }
2701
2702 static int
2703 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2704 {
2705         struct mwl8k_priv *priv = hw->priv;
2706
2707         priv->radio_short_preamble = short_preamble;
2708
2709         return mwl8k_cmd_radio_control(hw, 1, 1);
2710 }
2711
2712 /*
2713  * CMD_RF_TX_POWER.
2714  */
2715 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2716
2717 struct mwl8k_cmd_rf_tx_power {
2718         struct mwl8k_cmd_pkt header;
2719         __le16 action;
2720         __le16 support_level;
2721         __le16 current_level;
2722         __le16 reserved;
2723         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2724 } __packed;
2725
2726 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2727 {
2728         struct mwl8k_cmd_rf_tx_power *cmd;
2729         int rc;
2730
2731         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2732         if (cmd == NULL)
2733                 return -ENOMEM;
2734
2735         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2736         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2737         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2738         cmd->support_level = cpu_to_le16(dBm);
2739
2740         rc = mwl8k_post_cmd(hw, &cmd->header);
2741         kfree(cmd);
2742
2743         return rc;
2744 }
2745
2746 /*
2747  * CMD_TX_POWER.
2748  */
2749 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2750
2751 struct mwl8k_cmd_tx_power {
2752         struct mwl8k_cmd_pkt header;
2753         __le16 action;
2754         __le16 band;
2755         __le16 channel;
2756         __le16 bw;
2757         __le16 sub_ch;
2758         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2759 } __packed;
2760
2761 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2762                                      struct ieee80211_conf *conf,
2763                                      unsigned short pwr)
2764 {
2765         struct ieee80211_channel *channel = conf->channel;
2766         struct mwl8k_cmd_tx_power *cmd;
2767         int rc;
2768         int i;
2769
2770         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2771         if (cmd == NULL)
2772                 return -ENOMEM;
2773
2774         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2775         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2776         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2777
2778         if (channel->band == IEEE80211_BAND_2GHZ)
2779                 cmd->band = cpu_to_le16(0x1);
2780         else if (channel->band == IEEE80211_BAND_5GHZ)
2781                 cmd->band = cpu_to_le16(0x4);
2782
2783         cmd->channel = cpu_to_le16(channel->hw_value);
2784
2785         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2786             conf->channel_type == NL80211_CHAN_HT20) {
2787                 cmd->bw = cpu_to_le16(0x2);
2788         } else {
2789                 cmd->bw = cpu_to_le16(0x4);
2790                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2791                         cmd->sub_ch = cpu_to_le16(0x3);
2792                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2793                         cmd->sub_ch = cpu_to_le16(0x1);
2794         }
2795
2796         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2797                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2798
2799         rc = mwl8k_post_cmd(hw, &cmd->header);
2800         kfree(cmd);
2801
2802         return rc;
2803 }
2804
2805 /*
2806  * CMD_RF_ANTENNA.
2807  */
2808 struct mwl8k_cmd_rf_antenna {
2809         struct mwl8k_cmd_pkt header;
2810         __le16 antenna;
2811         __le16 mode;
2812 } __packed;
2813
2814 #define MWL8K_RF_ANTENNA_RX             1
2815 #define MWL8K_RF_ANTENNA_TX             2
2816
2817 static int
2818 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2819 {
2820         struct mwl8k_cmd_rf_antenna *cmd;
2821         int rc;
2822
2823         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2824         if (cmd == NULL)
2825                 return -ENOMEM;
2826
2827         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2828         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2829         cmd->antenna = cpu_to_le16(antenna);
2830         cmd->mode = cpu_to_le16(mask);
2831
2832         rc = mwl8k_post_cmd(hw, &cmd->header);
2833         kfree(cmd);
2834
2835         return rc;
2836 }
2837
2838 /*
2839  * CMD_SET_BEACON.
2840  */
2841 struct mwl8k_cmd_set_beacon {
2842         struct mwl8k_cmd_pkt header;
2843         __le16 beacon_len;
2844         __u8 beacon[0];
2845 };
2846
2847 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2848                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2849 {
2850         struct mwl8k_cmd_set_beacon *cmd;
2851         int rc;
2852
2853         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2854         if (cmd == NULL)
2855                 return -ENOMEM;
2856
2857         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2858         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2859         cmd->beacon_len = cpu_to_le16(len);
2860         memcpy(cmd->beacon, beacon, len);
2861
2862         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2863         kfree(cmd);
2864
2865         return rc;
2866 }
2867
2868 /*
2869  * CMD_SET_PRE_SCAN.
2870  */
2871 struct mwl8k_cmd_set_pre_scan {
2872         struct mwl8k_cmd_pkt header;
2873 } __packed;
2874
2875 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2876 {
2877         struct mwl8k_cmd_set_pre_scan *cmd;
2878         int rc;
2879
2880         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2881         if (cmd == NULL)
2882                 return -ENOMEM;
2883
2884         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2885         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2886
2887         rc = mwl8k_post_cmd(hw, &cmd->header);
2888         kfree(cmd);
2889
2890         return rc;
2891 }
2892
2893 /*
2894  * CMD_SET_POST_SCAN.
2895  */
2896 struct mwl8k_cmd_set_post_scan {
2897         struct mwl8k_cmd_pkt header;
2898         __le32 isibss;
2899         __u8 bssid[ETH_ALEN];
2900 } __packed;
2901
2902 static int
2903 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2904 {
2905         struct mwl8k_cmd_set_post_scan *cmd;
2906         int rc;
2907
2908         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2909         if (cmd == NULL)
2910                 return -ENOMEM;
2911
2912         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2913         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2914         cmd->isibss = 0;
2915         memcpy(cmd->bssid, mac, ETH_ALEN);
2916
2917         rc = mwl8k_post_cmd(hw, &cmd->header);
2918         kfree(cmd);
2919
2920         return rc;
2921 }
2922
2923 /*
2924  * CMD_SET_RF_CHANNEL.
2925  */
2926 struct mwl8k_cmd_set_rf_channel {
2927         struct mwl8k_cmd_pkt header;
2928         __le16 action;
2929         __u8 current_channel;
2930         __le32 channel_flags;
2931 } __packed;
2932
2933 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2934                                     struct ieee80211_conf *conf)
2935 {
2936         struct ieee80211_channel *channel = conf->channel;
2937         struct mwl8k_cmd_set_rf_channel *cmd;
2938         int rc;
2939
2940         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2941         if (cmd == NULL)
2942                 return -ENOMEM;
2943
2944         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2945         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2946         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2947         cmd->current_channel = channel->hw_value;
2948
2949         if (channel->band == IEEE80211_BAND_2GHZ)
2950                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2951         else if (channel->band == IEEE80211_BAND_5GHZ)
2952                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2953
2954         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2955             conf->channel_type == NL80211_CHAN_HT20)
2956                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2957         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2958                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2959         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2960                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2961
2962         rc = mwl8k_post_cmd(hw, &cmd->header);
2963         kfree(cmd);
2964
2965         return rc;
2966 }
2967
2968 /*
2969  * CMD_SET_AID.
2970  */
2971 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2972 #define MWL8K_FRAME_PROT_11G                            0x07
2973 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2974 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2975
2976 struct mwl8k_cmd_update_set_aid {
2977         struct  mwl8k_cmd_pkt header;
2978         __le16  aid;
2979
2980          /* AP's MAC address (BSSID) */
2981         __u8    bssid[ETH_ALEN];
2982         __le16  protection_mode;
2983         __u8    supp_rates[14];
2984 } __packed;
2985
2986 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2987 {
2988         int i;
2989         int j;
2990
2991         /*
2992          * Clear nonstandard rates 4 and 13.
2993          */
2994         mask &= 0x1fef;
2995
2996         for (i = 0, j = 0; i < 14; i++) {
2997                 if (mask & (1 << i))
2998                         rates[j++] = mwl8k_rates_24[i].hw_value;
2999         }
3000 }
3001
3002 static int
3003 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3004                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
3005 {
3006         struct mwl8k_cmd_update_set_aid *cmd;
3007         u16 prot_mode;
3008         int rc;
3009
3010         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3011         if (cmd == NULL)
3012                 return -ENOMEM;
3013
3014         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3015         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3016         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3017         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3018
3019         if (vif->bss_conf.use_cts_prot) {
3020                 prot_mode = MWL8K_FRAME_PROT_11G;
3021         } else {
3022                 switch (vif->bss_conf.ht_operation_mode &
3023                         IEEE80211_HT_OP_MODE_PROTECTION) {
3024                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3025                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3026                         break;
3027                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3028                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3029                         break;
3030                 default:
3031                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3032                         break;
3033                 }
3034         }
3035         cmd->protection_mode = cpu_to_le16(prot_mode);
3036
3037         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3038
3039         rc = mwl8k_post_cmd(hw, &cmd->header);
3040         kfree(cmd);
3041
3042         return rc;
3043 }
3044
3045 /*
3046  * CMD_SET_RATE.
3047  */
3048 struct mwl8k_cmd_set_rate {
3049         struct  mwl8k_cmd_pkt header;
3050         __u8    legacy_rates[14];
3051
3052         /* Bitmap for supported MCS codes.  */
3053         __u8    mcs_set[16];
3054         __u8    reserved[16];
3055 } __packed;
3056
3057 static int
3058 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3059                    u32 legacy_rate_mask, u8 *mcs_rates)
3060 {
3061         struct mwl8k_cmd_set_rate *cmd;
3062         int rc;
3063
3064         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3065         if (cmd == NULL)
3066                 return -ENOMEM;
3067
3068         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3069         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3070         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3071         memcpy(cmd->mcs_set, mcs_rates, 16);
3072
3073         rc = mwl8k_post_cmd(hw, &cmd->header);
3074         kfree(cmd);
3075
3076         return rc;
3077 }
3078
3079 /*
3080  * CMD_FINALIZE_JOIN.
3081  */
3082 #define MWL8K_FJ_BEACON_MAXLEN  128
3083
3084 struct mwl8k_cmd_finalize_join {
3085         struct mwl8k_cmd_pkt header;
3086         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3087         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3088 } __packed;
3089
3090 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3091                                    int framelen, int dtim)
3092 {
3093         struct mwl8k_cmd_finalize_join *cmd;
3094         struct ieee80211_mgmt *payload = frame;
3095         int payload_len;
3096         int rc;
3097
3098         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3099         if (cmd == NULL)
3100                 return -ENOMEM;
3101
3102         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3103         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3104         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3105
3106         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3107         if (payload_len < 0)
3108                 payload_len = 0;
3109         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3110                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3111
3112         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3113
3114         rc = mwl8k_post_cmd(hw, &cmd->header);
3115         kfree(cmd);
3116
3117         return rc;
3118 }
3119
3120 /*
3121  * CMD_SET_RTS_THRESHOLD.
3122  */
3123 struct mwl8k_cmd_set_rts_threshold {
3124         struct mwl8k_cmd_pkt header;
3125         __le16 action;
3126         __le16 threshold;
3127 } __packed;
3128
3129 static int
3130 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3131 {
3132         struct mwl8k_cmd_set_rts_threshold *cmd;
3133         int rc;
3134
3135         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3136         if (cmd == NULL)
3137                 return -ENOMEM;
3138
3139         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3140         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3141         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3142         cmd->threshold = cpu_to_le16(rts_thresh);
3143
3144         rc = mwl8k_post_cmd(hw, &cmd->header);
3145         kfree(cmd);
3146
3147         return rc;
3148 }
3149
3150 /*
3151  * CMD_SET_SLOT.
3152  */
3153 struct mwl8k_cmd_set_slot {
3154         struct mwl8k_cmd_pkt header;
3155         __le16 action;
3156         __u8 short_slot;
3157 } __packed;
3158
3159 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3160 {
3161         struct mwl8k_cmd_set_slot *cmd;
3162         int rc;
3163
3164         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3165         if (cmd == NULL)
3166                 return -ENOMEM;
3167
3168         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3169         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3170         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3171         cmd->short_slot = short_slot_time;
3172
3173         rc = mwl8k_post_cmd(hw, &cmd->header);
3174         kfree(cmd);
3175
3176         return rc;
3177 }
3178
3179 /*
3180  * CMD_SET_EDCA_PARAMS.
3181  */
3182 struct mwl8k_cmd_set_edca_params {
3183         struct mwl8k_cmd_pkt header;
3184
3185         /* See MWL8K_SET_EDCA_XXX below */
3186         __le16 action;
3187
3188         /* TX opportunity in units of 32 us */
3189         __le16 txop;
3190
3191         union {
3192                 struct {
3193                         /* Log exponent of max contention period: 0...15 */
3194                         __le32 log_cw_max;
3195
3196                         /* Log exponent of min contention period: 0...15 */
3197                         __le32 log_cw_min;
3198
3199                         /* Adaptive interframe spacing in units of 32us */
3200                         __u8 aifs;
3201
3202                         /* TX queue to configure */
3203                         __u8 txq;
3204                 } ap;
3205                 struct {
3206                         /* Log exponent of max contention period: 0...15 */
3207                         __u8 log_cw_max;
3208
3209                         /* Log exponent of min contention period: 0...15 */
3210                         __u8 log_cw_min;
3211
3212                         /* Adaptive interframe spacing in units of 32us */
3213                         __u8 aifs;
3214
3215                         /* TX queue to configure */
3216                         __u8 txq;
3217                 } sta;
3218         };
3219 } __packed;
3220
3221 #define MWL8K_SET_EDCA_CW       0x01
3222 #define MWL8K_SET_EDCA_TXOP     0x02
3223 #define MWL8K_SET_EDCA_AIFS     0x04
3224
3225 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3226                                  MWL8K_SET_EDCA_TXOP | \
3227                                  MWL8K_SET_EDCA_AIFS)
3228
3229 static int
3230 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3231                           __u16 cw_min, __u16 cw_max,
3232                           __u8 aifs, __u16 txop)
3233 {
3234         struct mwl8k_priv *priv = hw->priv;
3235         struct mwl8k_cmd_set_edca_params *cmd;
3236         int rc;
3237
3238         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3239         if (cmd == NULL)
3240                 return -ENOMEM;
3241
3242         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3243         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3244         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3245         cmd->txop = cpu_to_le16(txop);
3246         if (priv->ap_fw) {
3247                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3248                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3249                 cmd->ap.aifs = aifs;
3250                 cmd->ap.txq = qnum;
3251         } else {
3252                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3253                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3254                 cmd->sta.aifs = aifs;
3255                 cmd->sta.txq = qnum;
3256         }
3257
3258         rc = mwl8k_post_cmd(hw, &cmd->header);
3259         kfree(cmd);
3260
3261         return rc;
3262 }
3263
3264 /*
3265  * CMD_SET_WMM_MODE.
3266  */
3267 struct mwl8k_cmd_set_wmm_mode {
3268         struct mwl8k_cmd_pkt header;
3269         __le16 action;
3270 } __packed;
3271
3272 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3273 {
3274         struct mwl8k_priv *priv = hw->priv;
3275         struct mwl8k_cmd_set_wmm_mode *cmd;
3276         int rc;
3277
3278         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3279         if (cmd == NULL)
3280                 return -ENOMEM;
3281
3282         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3283         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3284         cmd->action = cpu_to_le16(!!enable);
3285
3286         rc = mwl8k_post_cmd(hw, &cmd->header);
3287         kfree(cmd);
3288
3289         if (!rc)
3290                 priv->wmm_enabled = enable;
3291
3292         return rc;
3293 }
3294
3295 /*
3296  * CMD_MIMO_CONFIG.
3297  */
3298 struct mwl8k_cmd_mimo_config {
3299         struct mwl8k_cmd_pkt header;
3300         __le32 action;
3301         __u8 rx_antenna_map;
3302         __u8 tx_antenna_map;
3303 } __packed;
3304
3305 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3306 {
3307         struct mwl8k_cmd_mimo_config *cmd;
3308         int rc;
3309
3310         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3311         if (cmd == NULL)
3312                 return -ENOMEM;
3313
3314         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3315         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3316         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3317         cmd->rx_antenna_map = rx;
3318         cmd->tx_antenna_map = tx;
3319
3320         rc = mwl8k_post_cmd(hw, &cmd->header);
3321         kfree(cmd);
3322
3323         return rc;
3324 }
3325
3326 /*
3327  * CMD_USE_FIXED_RATE (STA version).
3328  */
3329 struct mwl8k_cmd_use_fixed_rate_sta {
3330         struct mwl8k_cmd_pkt header;
3331         __le32 action;
3332         __le32 allow_rate_drop;
3333         __le32 num_rates;
3334         struct {
3335                 __le32 is_ht_rate;
3336                 __le32 enable_retry;
3337                 __le32 rate;
3338                 __le32 retry_count;
3339         } rate_entry[8];
3340         __le32 rate_type;
3341         __le32 reserved1;
3342         __le32 reserved2;
3343 } __packed;
3344
3345 #define MWL8K_USE_AUTO_RATE     0x0002
3346 #define MWL8K_UCAST_RATE        0
3347
3348 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3349 {
3350         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3351         int rc;
3352
3353         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3354         if (cmd == NULL)
3355                 return -ENOMEM;
3356
3357         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3358         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3359         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3360         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3361
3362         rc = mwl8k_post_cmd(hw, &cmd->header);
3363         kfree(cmd);
3364
3365         return rc;
3366 }
3367
3368 /*
3369  * CMD_USE_FIXED_RATE (AP version).
3370  */
3371 struct mwl8k_cmd_use_fixed_rate_ap {
3372         struct mwl8k_cmd_pkt header;
3373         __le32 action;
3374         __le32 allow_rate_drop;
3375         __le32 num_rates;
3376         struct mwl8k_rate_entry_ap {
3377                 __le32 is_ht_rate;
3378                 __le32 enable_retry;
3379                 __le32 rate;
3380                 __le32 retry_count;
3381         } rate_entry[4];
3382         u8 multicast_rate;
3383         u8 multicast_rate_type;
3384         u8 management_rate;
3385 } __packed;
3386
3387 static int
3388 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3389 {
3390         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3391         int rc;
3392
3393         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3394         if (cmd == NULL)
3395                 return -ENOMEM;
3396
3397         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3398         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3399         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3400         cmd->multicast_rate = mcast;
3401         cmd->management_rate = mgmt;
3402
3403         rc = mwl8k_post_cmd(hw, &cmd->header);
3404         kfree(cmd);
3405
3406         return rc;
3407 }
3408
3409 /*
3410  * CMD_ENABLE_SNIFFER.
3411  */
3412 struct mwl8k_cmd_enable_sniffer {
3413         struct mwl8k_cmd_pkt header;
3414         __le32 action;
3415 } __packed;
3416
3417 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3418 {
3419         struct mwl8k_cmd_enable_sniffer *cmd;
3420         int rc;
3421
3422         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3423         if (cmd == NULL)
3424                 return -ENOMEM;
3425
3426         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3427         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3428         cmd->action = cpu_to_le32(!!enable);
3429
3430         rc = mwl8k_post_cmd(hw, &cmd->header);
3431         kfree(cmd);
3432
3433         return rc;
3434 }
3435
3436 struct mwl8k_cmd_update_mac_addr {
3437         struct mwl8k_cmd_pkt header;
3438         union {
3439                 struct {
3440                         __le16 mac_type;
3441                         __u8 mac_addr[ETH_ALEN];
3442                 } mbss;
3443                 __u8 mac_addr[ETH_ALEN];
3444         };
3445 } __packed;
3446
3447 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3448 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3449 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3450 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3451
3452 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3453                                   struct ieee80211_vif *vif, u8 *mac, bool set)
3454 {
3455         struct mwl8k_priv *priv = hw->priv;
3456         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3457         struct mwl8k_cmd_update_mac_addr *cmd;
3458         int mac_type;
3459         int rc;
3460
3461         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3462         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3463                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3464                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3465                 else
3466                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3467         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3468                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3469                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3470                 else
3471                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3472         }
3473
3474         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3475         if (cmd == NULL)
3476                 return -ENOMEM;
3477
3478         if (set)
3479                 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3480         else
3481                 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3482
3483         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3484         if (priv->ap_fw) {
3485                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3486                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3487         } else {
3488                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3489         }
3490
3491         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3492         kfree(cmd);
3493
3494         return rc;
3495 }
3496
3497 /*
3498  * MWL8K_CMD_SET_MAC_ADDR.
3499  */
3500 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3501                                   struct ieee80211_vif *vif, u8 *mac)
3502 {
3503         return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3504 }
3505
3506 /*
3507  * MWL8K_CMD_DEL_MAC_ADDR.
3508  */
3509 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3510                                   struct ieee80211_vif *vif, u8 *mac)
3511 {
3512         return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3513 }
3514
3515 /*
3516  * CMD_SET_RATEADAPT_MODE.
3517  */
3518 struct mwl8k_cmd_set_rate_adapt_mode {
3519         struct mwl8k_cmd_pkt header;
3520         __le16 action;
3521         __le16 mode;
3522 } __packed;
3523
3524 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3525 {
3526         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3527         int rc;
3528
3529         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3530         if (cmd == NULL)
3531                 return -ENOMEM;
3532
3533         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3534         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3535         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3536         cmd->mode = cpu_to_le16(mode);
3537
3538         rc = mwl8k_post_cmd(hw, &cmd->header);
3539         kfree(cmd);
3540
3541         return rc;
3542 }
3543
3544 /*
3545  * CMD_GET_WATCHDOG_BITMAP.
3546  */
3547 struct mwl8k_cmd_get_watchdog_bitmap {
3548         struct mwl8k_cmd_pkt header;
3549         u8      bitmap;
3550 } __packed;
3551
3552 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3553 {
3554         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3555         int rc;
3556
3557         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3558         if (cmd == NULL)
3559                 return -ENOMEM;
3560
3561         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3562         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3563
3564         rc = mwl8k_post_cmd(hw, &cmd->header);
3565         if (!rc)
3566                 *bitmap = cmd->bitmap;
3567
3568         kfree(cmd);
3569
3570         return rc;
3571 }
3572
3573 #define INVALID_BA      0xAA
3574 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3575 {
3576         int rc;
3577         u8 bitmap = 0, stream_index;
3578         struct mwl8k_ampdu_stream *streams;
3579         struct mwl8k_priv *priv =
3580                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3581
3582         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3583         if (rc)
3584                 return;
3585
3586         if (bitmap == INVALID_BA)
3587                 return;
3588
3589         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3590         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3591
3592         BUG_ON(stream_index >= priv->num_ampdu_queues);
3593
3594         streams = &priv->ampdu[stream_index];
3595
3596         if (streams->state == AMPDU_STREAM_ACTIVE)
3597                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3598
3599         return;
3600 }
3601
3602
3603 /*
3604  * CMD_BSS_START.
3605  */
3606 struct mwl8k_cmd_bss_start {
3607         struct mwl8k_cmd_pkt header;
3608         __le32 enable;
3609 } __packed;
3610
3611 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3612                                struct ieee80211_vif *vif, int enable)
3613 {
3614         struct mwl8k_cmd_bss_start *cmd;
3615         int rc;
3616
3617         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3618         if (cmd == NULL)
3619                 return -ENOMEM;
3620
3621         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3622         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3623         cmd->enable = cpu_to_le32(enable);
3624
3625         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3626         kfree(cmd);
3627
3628         return rc;
3629 }
3630
3631 /*
3632  * CMD_BASTREAM.
3633  */
3634
3635 /*
3636  * UPSTREAM is tx direction
3637  */
3638 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3639 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3640
3641 enum ba_stream_action_type {
3642         MWL8K_BA_CREATE,
3643         MWL8K_BA_UPDATE,
3644         MWL8K_BA_DESTROY,
3645         MWL8K_BA_FLUSH,
3646         MWL8K_BA_CHECK,
3647 };
3648
3649
3650 struct mwl8k_create_ba_stream {
3651         __le32  flags;
3652         __le32  idle_thrs;
3653         __le32  bar_thrs;
3654         __le32  window_size;
3655         u8      peer_mac_addr[6];
3656         u8      dialog_token;
3657         u8      tid;
3658         u8      queue_id;
3659         u8      param_info;
3660         __le32  ba_context;
3661         u8      reset_seq_no_flag;
3662         __le16  curr_seq_no;
3663         u8      sta_src_mac_addr[6];
3664 } __packed;
3665
3666 struct mwl8k_destroy_ba_stream {
3667         __le32  flags;
3668         __le32  ba_context;
3669 } __packed;
3670
3671 struct mwl8k_cmd_bastream {
3672         struct mwl8k_cmd_pkt    header;
3673         __le32  action;
3674         union {
3675                 struct mwl8k_create_ba_stream   create_params;
3676                 struct mwl8k_destroy_ba_stream  destroy_params;
3677         };
3678 } __packed;
3679
3680 static int
3681 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3682 {
3683         struct mwl8k_cmd_bastream *cmd;
3684         int rc;
3685
3686         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3687         if (cmd == NULL)
3688                 return -ENOMEM;
3689
3690         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3691         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3692
3693         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3694
3695         cmd->create_params.queue_id = stream->idx;
3696         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3697                ETH_ALEN);
3698         cmd->create_params.tid = stream->tid;
3699
3700         cmd->create_params.flags =
3701                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3702                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3703
3704         rc = mwl8k_post_cmd(hw, &cmd->header);
3705
3706         kfree(cmd);
3707
3708         return rc;
3709 }
3710
3711 static int
3712 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3713                 u8 buf_size)
3714 {
3715         struct mwl8k_cmd_bastream *cmd;
3716         int rc;
3717
3718         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3719         if (cmd == NULL)
3720                 return -ENOMEM;
3721
3722
3723         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3724         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3725
3726         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3727
3728         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3729         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3730         cmd->create_params.queue_id = stream->idx;
3731
3732         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3733         cmd->create_params.tid = stream->tid;
3734         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3735         cmd->create_params.reset_seq_no_flag = 1;
3736
3737         cmd->create_params.param_info =
3738                 (stream->sta->ht_cap.ampdu_factor &
3739                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3740                 ((stream->sta->ht_cap.ampdu_density << 2) &
3741                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3742
3743         cmd->create_params.flags =
3744                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3745                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3746
3747         rc = mwl8k_post_cmd(hw, &cmd->header);
3748
3749         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3750                 stream->sta->addr, stream->tid);
3751         kfree(cmd);
3752
3753         return rc;
3754 }
3755
3756 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3757                              struct mwl8k_ampdu_stream *stream)
3758 {
3759         struct mwl8k_cmd_bastream *cmd;
3760
3761         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3762         if (cmd == NULL)
3763                 return;
3764
3765         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3766         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3767         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3768
3769         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3770         mwl8k_post_cmd(hw, &cmd->header);
3771
3772         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3773
3774         kfree(cmd);
3775 }
3776
3777 /*
3778  * CMD_SET_NEW_STN.
3779  */
3780 struct mwl8k_cmd_set_new_stn {
3781         struct mwl8k_cmd_pkt header;
3782         __le16 aid;
3783         __u8 mac_addr[6];
3784         __le16 stn_id;
3785         __le16 action;
3786         __le16 rsvd;
3787         __le32 legacy_rates;
3788         __u8 ht_rates[4];
3789         __le16 cap_info;
3790         __le16 ht_capabilities_info;
3791         __u8 mac_ht_param_info;
3792         __u8 rev;
3793         __u8 control_channel;
3794         __u8 add_channel;
3795         __le16 op_mode;
3796         __le16 stbc;
3797         __u8 add_qos_info;
3798         __u8 is_qos_sta;
3799         __le32 fw_sta_ptr;
3800 } __packed;
3801
3802 #define MWL8K_STA_ACTION_ADD            0
3803 #define MWL8K_STA_ACTION_REMOVE         2
3804
3805 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3806                                      struct ieee80211_vif *vif,
3807                                      struct ieee80211_sta *sta)
3808 {
3809         struct mwl8k_cmd_set_new_stn *cmd;
3810         u32 rates;
3811         int rc;
3812
3813         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3814         if (cmd == NULL)
3815                 return -ENOMEM;
3816
3817         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3818         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3819         cmd->aid = cpu_to_le16(sta->aid);
3820         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3821         cmd->stn_id = cpu_to_le16(sta->aid);
3822         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3823         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3824                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3825         else
3826                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3827         cmd->legacy_rates = cpu_to_le32(rates);
3828         if (sta->ht_cap.ht_supported) {
3829                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3830                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3831                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3832                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3833                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3834                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3835                         ((sta->ht_cap.ampdu_density & 7) << 2);
3836                 cmd->is_qos_sta = 1;
3837         }
3838
3839         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3840         kfree(cmd);
3841
3842         return rc;
3843 }
3844
3845 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3846                                           struct ieee80211_vif *vif)
3847 {
3848         struct mwl8k_cmd_set_new_stn *cmd;
3849         int rc;
3850
3851         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3852         if (cmd == NULL)
3853                 return -ENOMEM;
3854
3855         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3856         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3857         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3858
3859         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3860         kfree(cmd);
3861
3862         return rc;
3863 }
3864
3865 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3866                                      struct ieee80211_vif *vif, u8 *addr)
3867 {
3868         struct mwl8k_cmd_set_new_stn *cmd;
3869         int rc;
3870
3871         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3872         if (cmd == NULL)
3873                 return -ENOMEM;
3874
3875         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3876         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3877         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3878         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3879
3880         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3881         kfree(cmd);
3882
3883         return rc;
3884 }
3885
3886 /*
3887  * CMD_UPDATE_ENCRYPTION.
3888  */
3889
3890 #define MAX_ENCR_KEY_LENGTH     16
3891 #define MIC_KEY_LENGTH          8
3892
3893 struct mwl8k_cmd_update_encryption {
3894         struct mwl8k_cmd_pkt header;
3895
3896         __le32 action;
3897         __le32 reserved;
3898         __u8 mac_addr[6];
3899         __u8 encr_type;
3900
3901 } __packed;
3902
3903 struct mwl8k_cmd_set_key {
3904         struct mwl8k_cmd_pkt header;
3905
3906         __le32 action;
3907         __le32 reserved;
3908         __le16 length;
3909         __le16 key_type_id;
3910         __le32 key_info;
3911         __le32 key_id;
3912         __le16 key_len;
3913         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3914         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3915         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3916         __le16 tkip_rsc_low;
3917         __le32 tkip_rsc_high;
3918         __le16 tkip_tsc_low;
3919         __le32 tkip_tsc_high;
3920         __u8 mac_addr[6];
3921 } __packed;
3922
3923 enum {
3924         MWL8K_ENCR_ENABLE,
3925         MWL8K_ENCR_SET_KEY,
3926         MWL8K_ENCR_REMOVE_KEY,
3927         MWL8K_ENCR_SET_GROUP_KEY,
3928 };
3929
3930 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3931 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3932 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3933 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3934 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3935
3936 enum {
3937         MWL8K_ALG_WEP,
3938         MWL8K_ALG_TKIP,
3939         MWL8K_ALG_CCMP,
3940 };
3941
3942 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3943 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3944 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3945 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3946 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3947
3948 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3949                                               struct ieee80211_vif *vif,
3950                                               u8 *addr,
3951                                               u8 encr_type)
3952 {
3953         struct mwl8k_cmd_update_encryption *cmd;
3954         int rc;
3955
3956         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3957         if (cmd == NULL)
3958                 return -ENOMEM;
3959
3960         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3961         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3962         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3963         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3964         cmd->encr_type = encr_type;
3965
3966         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3967         kfree(cmd);
3968
3969         return rc;
3970 }
3971
3972 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3973                                                 u8 *addr,
3974                                                 struct ieee80211_key_conf *key)
3975 {
3976         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3977         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3978         cmd->length = cpu_to_le16(sizeof(*cmd) -
3979                                 offsetof(struct mwl8k_cmd_set_key, length));
3980         cmd->key_id = cpu_to_le32(key->keyidx);
3981         cmd->key_len = cpu_to_le16(key->keylen);
3982         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3983
3984         switch (key->cipher) {
3985         case WLAN_CIPHER_SUITE_WEP40:
3986         case WLAN_CIPHER_SUITE_WEP104:
3987                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3988                 if (key->keyidx == 0)
3989                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3990
3991                 break;
3992         case WLAN_CIPHER_SUITE_TKIP:
3993                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3994                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3995                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3996                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3997                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3998                                                 | MWL8K_KEY_FLAG_TSC_VALID);
3999                 break;
4000         case WLAN_CIPHER_SUITE_CCMP:
4001                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4002                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4003                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4004                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4005                 break;
4006         default:
4007                 return -ENOTSUPP;
4008         }
4009
4010         return 0;
4011 }
4012
4013 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4014                                                 struct ieee80211_vif *vif,
4015                                                 u8 *addr,
4016                                                 struct ieee80211_key_conf *key)
4017 {
4018         struct mwl8k_cmd_set_key *cmd;
4019         int rc;
4020         int keymlen;
4021         u32 action;
4022         u8 idx;
4023         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4024
4025         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4026         if (cmd == NULL)
4027                 return -ENOMEM;
4028
4029         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4030         if (rc < 0)
4031                 goto done;
4032
4033         idx = key->keyidx;
4034
4035         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4036                 action = MWL8K_ENCR_SET_KEY;
4037         else
4038                 action = MWL8K_ENCR_SET_GROUP_KEY;
4039
4040         switch (key->cipher) {
4041         case WLAN_CIPHER_SUITE_WEP40:
4042         case WLAN_CIPHER_SUITE_WEP104:
4043                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4044                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4045                                                 sizeof(*key) + key->keylen);
4046                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4047                 }
4048
4049                 keymlen = key->keylen;
4050                 action = MWL8K_ENCR_SET_KEY;
4051                 break;
4052         case WLAN_CIPHER_SUITE_TKIP:
4053                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4054                 break;
4055         case WLAN_CIPHER_SUITE_CCMP:
4056                 keymlen = key->keylen;
4057                 break;
4058         default:
4059                 rc = -ENOTSUPP;
4060                 goto done;
4061         }
4062
4063         memcpy(cmd->key_material, key->key, keymlen);
4064         cmd->action = cpu_to_le32(action);
4065
4066         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4067 done:
4068         kfree(cmd);
4069
4070         return rc;
4071 }
4072
4073 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4074                                                 struct ieee80211_vif *vif,
4075                                                 u8 *addr,
4076                                                 struct ieee80211_key_conf *key)
4077 {
4078         struct mwl8k_cmd_set_key *cmd;
4079         int rc;
4080         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4081
4082         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4083         if (cmd == NULL)
4084                 return -ENOMEM;
4085
4086         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4087         if (rc < 0)
4088                 goto done;
4089
4090         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4091                         key->cipher == WLAN_CIPHER_SUITE_WEP104)
4092                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4093
4094         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4095
4096         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4097 done:
4098         kfree(cmd);
4099
4100         return rc;
4101 }
4102
4103 static int mwl8k_set_key(struct ieee80211_hw *hw,
4104                          enum set_key_cmd cmd_param,
4105                          struct ieee80211_vif *vif,
4106                          struct ieee80211_sta *sta,
4107                          struct ieee80211_key_conf *key)
4108 {
4109         int rc = 0;
4110         u8 encr_type;
4111         u8 *addr;
4112         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4113
4114         if (vif->type == NL80211_IFTYPE_STATION)
4115                 return -EOPNOTSUPP;
4116
4117         if (sta == NULL)
4118                 addr = vif->addr;
4119         else
4120                 addr = sta->addr;
4121
4122         if (cmd_param == SET_KEY) {
4123                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4124                 if (rc)
4125                         goto out;
4126
4127                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4128                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4129                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4130                 else
4131                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4132
4133                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4134                                                                 encr_type);
4135                 if (rc)
4136                         goto out;
4137
4138                 mwl8k_vif->is_hw_crypto_enabled = true;
4139
4140         } else {
4141                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4142
4143                 if (rc)
4144                         goto out;
4145         }
4146 out:
4147         return rc;
4148 }
4149
4150 /*
4151  * CMD_UPDATE_STADB.
4152  */
4153 struct ewc_ht_info {
4154         __le16  control1;
4155         __le16  control2;
4156         __le16  control3;
4157 } __packed;
4158
4159 struct peer_capability_info {
4160         /* Peer type - AP vs. STA.  */
4161         __u8    peer_type;
4162
4163         /* Basic 802.11 capabilities from assoc resp.  */
4164         __le16  basic_caps;
4165
4166         /* Set if peer supports 802.11n high throughput (HT).  */
4167         __u8    ht_support;
4168
4169         /* Valid if HT is supported.  */
4170         __le16  ht_caps;
4171         __u8    extended_ht_caps;
4172         struct ewc_ht_info      ewc_info;
4173
4174         /* Legacy rate table. Intersection of our rates and peer rates.  */
4175         __u8    legacy_rates[12];
4176
4177         /* HT rate table. Intersection of our rates and peer rates.  */
4178         __u8    ht_rates[16];
4179         __u8    pad[16];
4180
4181         /* If set, interoperability mode, no proprietary extensions.  */
4182         __u8    interop;
4183         __u8    pad2;
4184         __u8    station_id;
4185         __le16  amsdu_enabled;
4186 } __packed;
4187
4188 struct mwl8k_cmd_update_stadb {
4189         struct mwl8k_cmd_pkt header;
4190
4191         /* See STADB_ACTION_TYPE */
4192         __le32  action;
4193
4194         /* Peer MAC address */
4195         __u8    peer_addr[ETH_ALEN];
4196
4197         __le32  reserved;
4198
4199         /* Peer info - valid during add/update.  */
4200         struct peer_capability_info     peer_info;
4201 } __packed;
4202
4203 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4204 #define MWL8K_STA_DB_DEL_ENTRY          2
4205
4206 /* Peer Entry flags - used to define the type of the peer node */
4207 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4208
4209 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4210                                       struct ieee80211_vif *vif,
4211                                       struct ieee80211_sta *sta)
4212 {
4213         struct mwl8k_cmd_update_stadb *cmd;
4214         struct peer_capability_info *p;
4215         u32 rates;
4216         int rc;
4217
4218         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4219         if (cmd == NULL)
4220                 return -ENOMEM;
4221
4222         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4223         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4224         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4225         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4226
4227         p = &cmd->peer_info;
4228         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4229         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4230         p->ht_support = sta->ht_cap.ht_supported;
4231         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4232         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4233                 ((sta->ht_cap.ampdu_density & 7) << 2);
4234         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4235                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4236         else
4237                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4238         legacy_rate_mask_to_array(p->legacy_rates, rates);
4239         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4240         p->interop = 1;
4241         p->amsdu_enabled = 0;
4242
4243         rc = mwl8k_post_cmd(hw, &cmd->header);
4244         kfree(cmd);
4245
4246         return rc ? rc : p->station_id;
4247 }
4248
4249 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4250                                       struct ieee80211_vif *vif, u8 *addr)
4251 {
4252         struct mwl8k_cmd_update_stadb *cmd;
4253         int rc;
4254
4255         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4256         if (cmd == NULL)
4257                 return -ENOMEM;
4258
4259         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4260         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4261         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4262         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4263
4264         rc = mwl8k_post_cmd(hw, &cmd->header);
4265         kfree(cmd);
4266
4267         return rc;
4268 }
4269
4270
4271 /*
4272  * Interrupt handling.
4273  */
4274 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4275 {
4276         struct ieee80211_hw *hw = dev_id;
4277         struct mwl8k_priv *priv = hw->priv;
4278         u32 status;
4279
4280         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4281         if (!status)
4282                 return IRQ_NONE;
4283
4284         if (status & MWL8K_A2H_INT_TX_DONE) {
4285                 status &= ~MWL8K_A2H_INT_TX_DONE;
4286                 tasklet_schedule(&priv->poll_tx_task);
4287         }
4288
4289         if (status & MWL8K_A2H_INT_RX_READY) {
4290                 status &= ~MWL8K_A2H_INT_RX_READY;
4291                 tasklet_schedule(&priv->poll_rx_task);
4292         }
4293
4294         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4295                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4296                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4297         }
4298
4299         if (status)
4300                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4301
4302         if (status & MWL8K_A2H_INT_OPC_DONE) {
4303                 if (priv->hostcmd_wait != NULL)
4304                         complete(priv->hostcmd_wait);
4305         }
4306
4307         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4308                 if (!mutex_is_locked(&priv->fw_mutex) &&
4309                     priv->radio_on && priv->pending_tx_pkts)
4310                         mwl8k_tx_start(priv);
4311         }
4312
4313         return IRQ_HANDLED;
4314 }
4315
4316 static void mwl8k_tx_poll(unsigned long data)
4317 {
4318         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4319         struct mwl8k_priv *priv = hw->priv;
4320         int limit;
4321         int i;
4322
4323         limit = 32;
4324
4325         spin_lock_bh(&priv->tx_lock);
4326
4327         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4328                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4329
4330         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4331                 complete(priv->tx_wait);
4332                 priv->tx_wait = NULL;
4333         }
4334
4335         spin_unlock_bh(&priv->tx_lock);
4336
4337         if (limit) {
4338                 writel(~MWL8K_A2H_INT_TX_DONE,
4339                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4340         } else {
4341                 tasklet_schedule(&priv->poll_tx_task);
4342         }
4343 }
4344
4345 static void mwl8k_rx_poll(unsigned long data)
4346 {
4347         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4348         struct mwl8k_priv *priv = hw->priv;
4349         int limit;
4350
4351         limit = 32;
4352         limit -= rxq_process(hw, 0, limit);
4353         limit -= rxq_refill(hw, 0, limit);
4354
4355         if (limit) {
4356                 writel(~MWL8K_A2H_INT_RX_READY,
4357                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4358         } else {
4359                 tasklet_schedule(&priv->poll_rx_task);
4360         }
4361 }
4362
4363
4364 /*
4365  * Core driver operations.
4366  */
4367 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4368 {
4369         struct mwl8k_priv *priv = hw->priv;
4370         int index = skb_get_queue_mapping(skb);
4371
4372         if (!priv->radio_on) {
4373                 wiphy_debug(hw->wiphy,
4374                             "dropped TX frame since radio disabled\n");
4375                 dev_kfree_skb(skb);
4376                 return;
4377         }
4378
4379         mwl8k_txq_xmit(hw, index, skb);
4380 }
4381
4382 static int mwl8k_start(struct ieee80211_hw *hw)
4383 {
4384         struct mwl8k_priv *priv = hw->priv;
4385         int rc;
4386
4387         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4388                          IRQF_SHARED, MWL8K_NAME, hw);
4389         if (rc) {
4390                 priv->irq = -1;
4391                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4392                 return -EIO;
4393         }
4394         priv->irq = priv->pdev->irq;
4395
4396         /* Enable TX reclaim and RX tasklets.  */
4397         tasklet_enable(&priv->poll_tx_task);
4398         tasklet_enable(&priv->poll_rx_task);
4399
4400         /* Enable interrupts */
4401         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4402         iowrite32(MWL8K_A2H_EVENTS,
4403                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4404
4405         rc = mwl8k_fw_lock(hw);
4406         if (!rc) {
4407                 rc = mwl8k_cmd_radio_enable(hw);
4408
4409                 if (!priv->ap_fw) {
4410                         if (!rc)
4411                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4412
4413                         if (!rc)
4414                                 rc = mwl8k_cmd_set_pre_scan(hw);
4415
4416                         if (!rc)
4417                                 rc = mwl8k_cmd_set_post_scan(hw,
4418                                                 "\x00\x00\x00\x00\x00\x00");
4419                 }
4420
4421                 if (!rc)
4422                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4423
4424                 if (!rc)
4425                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4426
4427                 mwl8k_fw_unlock(hw);
4428         }
4429
4430         if (rc) {
4431                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4432                 free_irq(priv->pdev->irq, hw);
4433                 priv->irq = -1;
4434                 tasklet_disable(&priv->poll_tx_task);
4435                 tasklet_disable(&priv->poll_rx_task);
4436         }
4437
4438         return rc;
4439 }
4440
4441 static void mwl8k_stop(struct ieee80211_hw *hw)
4442 {
4443         struct mwl8k_priv *priv = hw->priv;
4444         int i;
4445
4446         if (!priv->hw_restart_in_progress)
4447                 mwl8k_cmd_radio_disable(hw);
4448
4449         ieee80211_stop_queues(hw);
4450
4451         /* Disable interrupts */
4452         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4453         if (priv->irq != -1) {
4454                 free_irq(priv->pdev->irq, hw);
4455                 priv->irq = -1;
4456         }
4457
4458         /* Stop finalize join worker */
4459         cancel_work_sync(&priv->finalize_join_worker);
4460         cancel_work_sync(&priv->watchdog_ba_handle);
4461         if (priv->beacon_skb != NULL)
4462                 dev_kfree_skb(priv->beacon_skb);
4463
4464         /* Stop TX reclaim and RX tasklets.  */
4465         tasklet_disable(&priv->poll_tx_task);
4466         tasklet_disable(&priv->poll_rx_task);
4467
4468         /* Return all skbs to mac80211 */
4469         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4470                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4471 }
4472
4473 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4474
4475 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4476                                struct ieee80211_vif *vif)
4477 {
4478         struct mwl8k_priv *priv = hw->priv;
4479         struct mwl8k_vif *mwl8k_vif;
4480         u32 macids_supported;
4481         int macid, rc;
4482         struct mwl8k_device_info *di;
4483
4484         /*
4485          * Reject interface creation if sniffer mode is active, as
4486          * STA operation is mutually exclusive with hardware sniffer
4487          * mode.  (Sniffer mode is only used on STA firmware.)
4488          */
4489         if (priv->sniffer_enabled) {
4490                 wiphy_info(hw->wiphy,
4491                            "unable to create STA interface because sniffer mode is enabled\n");
4492                 return -EINVAL;
4493         }
4494
4495         di = priv->device_info;
4496         switch (vif->type) {
4497         case NL80211_IFTYPE_AP:
4498                 if (!priv->ap_fw && di->fw_image_ap) {
4499                         /* we must load the ap fw to meet this request */
4500                         if (!list_empty(&priv->vif_list))
4501                                 return -EBUSY;
4502                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4503                         if (rc)
4504                                 return rc;
4505                 }
4506                 macids_supported = priv->ap_macids_supported;
4507                 break;
4508         case NL80211_IFTYPE_STATION:
4509                 if (priv->ap_fw && di->fw_image_sta) {
4510                         /* we must load the sta fw to meet this request */
4511                         if (!list_empty(&priv->vif_list))
4512                                 return -EBUSY;
4513                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4514                         if (rc)
4515                                 return rc;
4516                 }
4517                 macids_supported = priv->sta_macids_supported;
4518                 break;
4519         default:
4520                 return -EINVAL;
4521         }
4522
4523         macid = ffs(macids_supported & ~priv->macids_used);
4524         if (!macid--)
4525                 return -EBUSY;
4526
4527         /* Setup driver private area. */
4528         mwl8k_vif = MWL8K_VIF(vif);
4529         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4530         mwl8k_vif->vif = vif;
4531         mwl8k_vif->macid = macid;
4532         mwl8k_vif->seqno = 0;
4533         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4534         mwl8k_vif->is_hw_crypto_enabled = false;
4535
4536         /* Set the mac address.  */
4537         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4538
4539         if (priv->ap_fw)
4540                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4541
4542         priv->macids_used |= 1 << mwl8k_vif->macid;
4543         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4544
4545         return 0;
4546 }
4547
4548 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4549 {
4550         /* Has ieee80211_restart_hw re-added the removed interfaces? */
4551         if (!priv->macids_used)
4552                 return;
4553
4554         priv->macids_used &= ~(1 << vif->macid);
4555         list_del(&vif->list);
4556 }
4557
4558 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4559                                    struct ieee80211_vif *vif)
4560 {
4561         struct mwl8k_priv *priv = hw->priv;
4562         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4563
4564         if (priv->ap_fw)
4565                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4566
4567         mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4568
4569         mwl8k_remove_vif(priv, mwl8k_vif);
4570 }
4571
4572 static void mwl8k_hw_restart_work(struct work_struct *work)
4573 {
4574         struct mwl8k_priv *priv =
4575                 container_of(work, struct mwl8k_priv, fw_reload);
4576         struct ieee80211_hw *hw = priv->hw;
4577         struct mwl8k_device_info *di;
4578         int rc;
4579
4580         /* If some command is waiting for a response, clear it */
4581         if (priv->hostcmd_wait != NULL) {
4582                 complete(priv->hostcmd_wait);
4583                 priv->hostcmd_wait = NULL;
4584         }
4585
4586         priv->hw_restart_owner = current;
4587         di = priv->device_info;
4588         mwl8k_fw_lock(hw);
4589
4590         if (priv->ap_fw)
4591                 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4592         else
4593                 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4594
4595         if (rc)
4596                 goto fail;
4597
4598         priv->hw_restart_owner = NULL;
4599         priv->hw_restart_in_progress = false;
4600
4601         /*
4602          * This unlock will wake up the queues and
4603          * also opens the command path for other
4604          * commands
4605          */
4606         mwl8k_fw_unlock(hw);
4607
4608         ieee80211_restart_hw(hw);
4609
4610         wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4611
4612         return;
4613 fail:
4614         mwl8k_fw_unlock(hw);
4615
4616         wiphy_err(hw->wiphy, "Firmware restart failed\n");
4617 }
4618
4619 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4620 {
4621         struct ieee80211_conf *conf = &hw->conf;
4622         struct mwl8k_priv *priv = hw->priv;
4623         int rc;
4624
4625         if (conf->flags & IEEE80211_CONF_IDLE) {
4626                 mwl8k_cmd_radio_disable(hw);
4627                 return 0;
4628         }
4629
4630         rc = mwl8k_fw_lock(hw);
4631         if (rc)
4632                 return rc;
4633
4634         rc = mwl8k_cmd_radio_enable(hw);
4635         if (rc)
4636                 goto out;
4637
4638         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4639         if (rc)
4640                 goto out;
4641
4642         if (conf->power_level > 18)
4643                 conf->power_level = 18;
4644
4645         if (priv->ap_fw) {
4646
4647                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4648                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4649                         if (rc)
4650                                 goto out;
4651                 }
4652
4653                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4654                 if (rc)
4655                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4656                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4657                 if (rc)
4658                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4659
4660         } else {
4661                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4662                 if (rc)
4663                         goto out;
4664                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4665         }
4666
4667 out:
4668         mwl8k_fw_unlock(hw);
4669
4670         return rc;
4671 }
4672
4673 static void
4674 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4675                            struct ieee80211_bss_conf *info, u32 changed)
4676 {
4677         struct mwl8k_priv *priv = hw->priv;
4678         u32 ap_legacy_rates = 0;
4679         u8 ap_mcs_rates[16];
4680         int rc;
4681
4682         if (mwl8k_fw_lock(hw))
4683                 return;
4684
4685         /*
4686          * No need to capture a beacon if we're no longer associated.
4687          */
4688         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4689                 priv->capture_beacon = false;
4690
4691         /*
4692          * Get the AP's legacy and MCS rates.
4693          */
4694         if (vif->bss_conf.assoc) {
4695                 struct ieee80211_sta *ap;
4696
4697                 rcu_read_lock();
4698
4699                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4700                 if (ap == NULL) {
4701                         rcu_read_unlock();
4702                         goto out;
4703                 }
4704
4705                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4706                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4707                 } else {
4708                         ap_legacy_rates =
4709                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4710                 }
4711                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4712
4713                 rcu_read_unlock();
4714         }
4715
4716         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4717                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4718                 if (rc)
4719                         goto out;
4720
4721                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4722                 if (rc)
4723                         goto out;
4724         }
4725
4726         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4727                 rc = mwl8k_set_radio_preamble(hw,
4728                                 vif->bss_conf.use_short_preamble);
4729                 if (rc)
4730                         goto out;
4731         }
4732
4733         if (changed & BSS_CHANGED_ERP_SLOT) {
4734                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4735                 if (rc)
4736                         goto out;
4737         }
4738
4739         if (vif->bss_conf.assoc &&
4740             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4741                         BSS_CHANGED_HT))) {
4742                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4743                 if (rc)
4744                         goto out;
4745         }
4746
4747         if (vif->bss_conf.assoc &&
4748             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4749                 /*
4750                  * Finalize the join.  Tell rx handler to process
4751                  * next beacon from our BSSID.
4752                  */
4753                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4754                 priv->capture_beacon = true;
4755         }
4756
4757 out:
4758         mwl8k_fw_unlock(hw);
4759 }
4760
4761 static void
4762 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4763                           struct ieee80211_bss_conf *info, u32 changed)
4764 {
4765         int rc;
4766
4767         if (mwl8k_fw_lock(hw))
4768                 return;
4769
4770         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4771                 rc = mwl8k_set_radio_preamble(hw,
4772                                 vif->bss_conf.use_short_preamble);
4773                 if (rc)
4774                         goto out;
4775         }
4776
4777         if (changed & BSS_CHANGED_BASIC_RATES) {
4778                 int idx;
4779                 int rate;
4780
4781                 /*
4782                  * Use lowest supported basic rate for multicasts
4783                  * and management frames (such as probe responses --
4784                  * beacons will always go out at 1 Mb/s).
4785                  */
4786                 idx = ffs(vif->bss_conf.basic_rates);
4787                 if (idx)
4788                         idx--;
4789
4790                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4791                         rate = mwl8k_rates_24[idx].hw_value;
4792                 else
4793                         rate = mwl8k_rates_50[idx].hw_value;
4794
4795                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4796         }
4797
4798         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4799                 struct sk_buff *skb;
4800
4801                 skb = ieee80211_beacon_get(hw, vif);
4802                 if (skb != NULL) {
4803                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4804                         kfree_skb(skb);
4805                 }
4806         }
4807
4808         if (changed & BSS_CHANGED_BEACON_ENABLED)
4809                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4810
4811 out:
4812         mwl8k_fw_unlock(hw);
4813 }
4814
4815 static void
4816 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4817                        struct ieee80211_bss_conf *info, u32 changed)
4818 {
4819         struct mwl8k_priv *priv = hw->priv;
4820
4821         if (!priv->ap_fw)
4822                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4823         else
4824                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4825 }
4826
4827 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4828                                    struct netdev_hw_addr_list *mc_list)
4829 {
4830         struct mwl8k_cmd_pkt *cmd;
4831
4832         /*
4833          * Synthesize and return a command packet that programs the
4834          * hardware multicast address filter.  At this point we don't
4835          * know whether FIF_ALLMULTI is being requested, but if it is,
4836          * we'll end up throwing this packet away and creating a new
4837          * one in mwl8k_configure_filter().
4838          */
4839         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4840
4841         return (unsigned long)cmd;
4842 }
4843
4844 static int
4845 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4846                                unsigned int changed_flags,
4847                                unsigned int *total_flags)
4848 {
4849         struct mwl8k_priv *priv = hw->priv;
4850
4851         /*
4852          * Hardware sniffer mode is mutually exclusive with STA
4853          * operation, so refuse to enable sniffer mode if a STA
4854          * interface is active.
4855          */
4856         if (!list_empty(&priv->vif_list)) {
4857                 if (net_ratelimit())
4858                         wiphy_info(hw->wiphy,
4859                                    "not enabling sniffer mode because STA interface is active\n");
4860                 return 0;
4861         }
4862
4863         if (!priv->sniffer_enabled) {
4864                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4865                         return 0;
4866                 priv->sniffer_enabled = true;
4867         }
4868
4869         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4870                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4871                         FIF_OTHER_BSS;
4872
4873         return 1;
4874 }
4875
4876 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4877 {
4878         if (!list_empty(&priv->vif_list))
4879                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4880
4881         return NULL;
4882 }
4883
4884 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4885                                    unsigned int changed_flags,
4886                                    unsigned int *total_flags,
4887                                    u64 multicast)
4888 {
4889         struct mwl8k_priv *priv = hw->priv;
4890         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4891
4892         /*
4893          * AP firmware doesn't allow fine-grained control over
4894          * the receive filter.
4895          */
4896         if (priv->ap_fw) {
4897                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4898                 kfree(cmd);
4899                 return;
4900         }
4901
4902         /*
4903          * Enable hardware sniffer mode if FIF_CONTROL or
4904          * FIF_OTHER_BSS is requested.
4905          */
4906         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4907             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4908                 kfree(cmd);
4909                 return;
4910         }
4911
4912         /* Clear unsupported feature flags */
4913         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4914
4915         if (mwl8k_fw_lock(hw)) {
4916                 kfree(cmd);
4917                 return;
4918         }
4919
4920         if (priv->sniffer_enabled) {
4921                 mwl8k_cmd_enable_sniffer(hw, 0);
4922                 priv->sniffer_enabled = false;
4923         }
4924
4925         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4926                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4927                         /*
4928                          * Disable the BSS filter.
4929                          */
4930                         mwl8k_cmd_set_pre_scan(hw);
4931                 } else {
4932                         struct mwl8k_vif *mwl8k_vif;
4933                         const u8 *bssid;
4934
4935                         /*
4936                          * Enable the BSS filter.
4937                          *
4938                          * If there is an active STA interface, use that
4939                          * interface's BSSID, otherwise use a dummy one
4940                          * (where the OUI part needs to be nonzero for
4941                          * the BSSID to be accepted by POST_SCAN).
4942                          */
4943                         mwl8k_vif = mwl8k_first_vif(priv);
4944                         if (mwl8k_vif != NULL)
4945                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4946                         else
4947                                 bssid = "\x01\x00\x00\x00\x00\x00";
4948
4949                         mwl8k_cmd_set_post_scan(hw, bssid);
4950                 }
4951         }
4952
4953         /*
4954          * If FIF_ALLMULTI is being requested, throw away the command
4955          * packet that ->prepare_multicast() built and replace it with
4956          * a command packet that enables reception of all multicast
4957          * packets.
4958          */
4959         if (*total_flags & FIF_ALLMULTI) {
4960                 kfree(cmd);
4961                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4962         }
4963
4964         if (cmd != NULL) {
4965                 mwl8k_post_cmd(hw, cmd);
4966                 kfree(cmd);
4967         }
4968
4969         mwl8k_fw_unlock(hw);
4970 }
4971
4972 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4973 {
4974         return mwl8k_cmd_set_rts_threshold(hw, value);
4975 }
4976
4977 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4978                             struct ieee80211_vif *vif,
4979                             struct ieee80211_sta *sta)
4980 {
4981         struct mwl8k_priv *priv = hw->priv;
4982
4983         if (priv->ap_fw)
4984                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4985         else
4986                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4987 }
4988
4989 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4990                          struct ieee80211_vif *vif,
4991                          struct ieee80211_sta *sta)
4992 {
4993         struct mwl8k_priv *priv = hw->priv;
4994         int ret;
4995         int i;
4996         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4997         struct ieee80211_key_conf *key;
4998
4999         if (!priv->ap_fw) {
5000                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5001                 if (ret >= 0) {
5002                         MWL8K_STA(sta)->peer_id = ret;
5003                         if (sta->ht_cap.ht_supported)
5004                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
5005                         ret = 0;
5006                 }
5007
5008         } else {
5009                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5010         }
5011
5012         for (i = 0; i < NUM_WEP_KEYS; i++) {
5013                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5014                 if (mwl8k_vif->wep_key_conf[i].enabled)
5015                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5016         }
5017         return ret;
5018 }
5019
5020 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5021                          struct ieee80211_vif *vif, u16 queue,
5022                          const struct ieee80211_tx_queue_params *params)
5023 {
5024         struct mwl8k_priv *priv = hw->priv;
5025         int rc;
5026
5027         rc = mwl8k_fw_lock(hw);
5028         if (!rc) {
5029                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5030                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5031
5032                 if (!priv->wmm_enabled)
5033                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5034
5035                 if (!rc) {
5036                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5037                         rc = mwl8k_cmd_set_edca_params(hw, q,
5038                                                        params->cw_min,
5039                                                        params->cw_max,
5040                                                        params->aifs,
5041                                                        params->txop);
5042                 }
5043
5044                 mwl8k_fw_unlock(hw);
5045         }
5046
5047         return rc;
5048 }
5049
5050 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5051                            struct ieee80211_low_level_stats *stats)
5052 {
5053         return mwl8k_cmd_get_stat(hw, stats);
5054 }
5055
5056 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5057                                 struct survey_info *survey)
5058 {
5059         struct mwl8k_priv *priv = hw->priv;
5060         struct ieee80211_conf *conf = &hw->conf;
5061
5062         if (idx != 0)
5063                 return -ENOENT;
5064
5065         survey->channel = conf->channel;
5066         survey->filled = SURVEY_INFO_NOISE_DBM;
5067         survey->noise = priv->noise;
5068
5069         return 0;
5070 }
5071
5072 #define MAX_AMPDU_ATTEMPTS 5
5073
5074 static int
5075 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5076                    enum ieee80211_ampdu_mlme_action action,
5077                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5078                    u8 buf_size)
5079 {
5080
5081         int i, rc = 0;
5082         struct mwl8k_priv *priv = hw->priv;
5083         struct mwl8k_ampdu_stream *stream;
5084         u8 *addr = sta->addr;
5085
5086         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5087                 return -ENOTSUPP;
5088
5089         spin_lock(&priv->stream_lock);
5090         stream = mwl8k_lookup_stream(hw, addr, tid);
5091
5092         switch (action) {
5093         case IEEE80211_AMPDU_RX_START:
5094         case IEEE80211_AMPDU_RX_STOP:
5095                 break;
5096         case IEEE80211_AMPDU_TX_START:
5097                 /* By the time we get here the hw queues may contain outgoing
5098                  * packets for this RA/TID that are not part of this BA
5099                  * session.  The hw will assign sequence numbers to these
5100                  * packets as they go out.  So if we query the hw for its next
5101                  * sequence number and use that for the SSN here, it may end up
5102                  * being wrong, which will lead to sequence number mismatch at
5103                  * the recipient.  To avoid this, we reset the sequence number
5104                  * to O for the first MPDU in this BA stream.
5105                  */
5106                 *ssn = 0;
5107                 if (stream == NULL) {
5108                         /* This means that somebody outside this driver called
5109                          * ieee80211_start_tx_ba_session.  This is unexpected
5110                          * because we do our own rate control.  Just warn and
5111                          * move on.
5112                          */
5113                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5114                                    "Proceeding anyway.\n", __func__);
5115                         stream = mwl8k_add_stream(hw, sta, tid);
5116                 }
5117                 if (stream == NULL) {
5118                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5119                         rc = -EBUSY;
5120                         break;
5121                 }
5122                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5123
5124                 /* Release the lock before we do the time consuming stuff */
5125                 spin_unlock(&priv->stream_lock);
5126                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5127                         rc = mwl8k_check_ba(hw, stream);
5128
5129                         /* If HW restart is in progress mwl8k_post_cmd will
5130                          * return -EBUSY. Avoid retrying mwl8k_check_ba in
5131                          * such cases
5132                          */
5133                         if (!rc || rc == -EBUSY)
5134                                 break;
5135                         /*
5136                          * HW queues take time to be flushed, give them
5137                          * sufficient time
5138                          */
5139
5140                         msleep(1000);
5141                 }
5142                 spin_lock(&priv->stream_lock);
5143                 if (rc) {
5144                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5145                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5146                         mwl8k_remove_stream(hw, stream);
5147                         rc = -EBUSY;
5148                         break;
5149                 }
5150                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5151                 break;
5152         case IEEE80211_AMPDU_TX_STOP:
5153                 if (stream) {
5154                         if (stream->state == AMPDU_STREAM_ACTIVE) {
5155                                 spin_unlock(&priv->stream_lock);
5156                                 mwl8k_destroy_ba(hw, stream);
5157                                 spin_lock(&priv->stream_lock);
5158                         }
5159                         mwl8k_remove_stream(hw, stream);
5160                 }
5161                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5162                 break;
5163         case IEEE80211_AMPDU_TX_OPERATIONAL:
5164                 BUG_ON(stream == NULL);
5165                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5166                 spin_unlock(&priv->stream_lock);
5167                 rc = mwl8k_create_ba(hw, stream, buf_size);
5168                 spin_lock(&priv->stream_lock);
5169                 if (!rc)
5170                         stream->state = AMPDU_STREAM_ACTIVE;
5171                 else {
5172                         spin_unlock(&priv->stream_lock);
5173                         mwl8k_destroy_ba(hw, stream);
5174                         spin_lock(&priv->stream_lock);
5175                         wiphy_debug(hw->wiphy,
5176                                 "Failed adding stream for sta %pM tid %d\n",
5177                                 addr, tid);
5178                         mwl8k_remove_stream(hw, stream);
5179                 }
5180                 break;
5181
5182         default:
5183                 rc = -ENOTSUPP;
5184         }
5185
5186         spin_unlock(&priv->stream_lock);
5187         return rc;
5188 }
5189
5190 static const struct ieee80211_ops mwl8k_ops = {
5191         .tx                     = mwl8k_tx,
5192         .start                  = mwl8k_start,
5193         .stop                   = mwl8k_stop,
5194         .add_interface          = mwl8k_add_interface,
5195         .remove_interface       = mwl8k_remove_interface,
5196         .config                 = mwl8k_config,
5197         .bss_info_changed       = mwl8k_bss_info_changed,
5198         .prepare_multicast      = mwl8k_prepare_multicast,
5199         .configure_filter       = mwl8k_configure_filter,
5200         .set_key                = mwl8k_set_key,
5201         .set_rts_threshold      = mwl8k_set_rts_threshold,
5202         .sta_add                = mwl8k_sta_add,
5203         .sta_remove             = mwl8k_sta_remove,
5204         .conf_tx                = mwl8k_conf_tx,
5205         .get_stats              = mwl8k_get_stats,
5206         .get_survey             = mwl8k_get_survey,
5207         .ampdu_action           = mwl8k_ampdu_action,
5208 };
5209
5210 static void mwl8k_finalize_join_worker(struct work_struct *work)
5211 {
5212         struct mwl8k_priv *priv =
5213                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5214         struct sk_buff *skb = priv->beacon_skb;
5215         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5216         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5217         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5218                                          mgmt->u.beacon.variable, len);
5219         int dtim_period = 1;
5220
5221         if (tim && tim[1] >= 2)
5222                 dtim_period = tim[3];
5223
5224         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5225
5226         dev_kfree_skb(skb);
5227         priv->beacon_skb = NULL;
5228 }
5229
5230 enum {
5231         MWL8363 = 0,
5232         MWL8687,
5233         MWL8366,
5234 };
5235
5236 #define MWL8K_8366_AP_FW_API 2
5237 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5238 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5239
5240 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5241         [MWL8363] = {
5242                 .part_name      = "88w8363",
5243                 .helper_image   = "mwl8k/helper_8363.fw",
5244                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5245         },
5246         [MWL8687] = {
5247                 .part_name      = "88w8687",
5248                 .helper_image   = "mwl8k/helper_8687.fw",
5249                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5250         },
5251         [MWL8366] = {
5252                 .part_name      = "88w8366",
5253                 .helper_image   = "mwl8k/helper_8366.fw",
5254                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5255                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5256                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5257                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5258         },
5259 };
5260
5261 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5262 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5263 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5264 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5265 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5266 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5267 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5268
5269 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5270         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5271         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5272         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5273         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5274         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5275         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5276         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5277         { },
5278 };
5279 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5280
5281 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5282 {
5283         int rc;
5284         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5285                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5286                priv->fw_pref, priv->fw_alt);
5287         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5288         if (rc) {
5289                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5290                        pci_name(priv->pdev), priv->fw_alt);
5291                 return rc;
5292         }
5293         return 0;
5294 }
5295
5296 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5297 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5298 {
5299         struct mwl8k_priv *priv = context;
5300         struct mwl8k_device_info *di = priv->device_info;
5301         int rc;
5302
5303         switch (priv->fw_state) {
5304         case FW_STATE_INIT:
5305                 if (!fw) {
5306                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5307                                pci_name(priv->pdev), di->helper_image);
5308                         goto fail;
5309                 }
5310                 priv->fw_helper = fw;
5311                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5312                                       true);
5313                 if (rc && priv->fw_alt) {
5314                         rc = mwl8k_request_alt_fw(priv);
5315                         if (rc)
5316                                 goto fail;
5317                         priv->fw_state = FW_STATE_LOADING_ALT;
5318                 } else if (rc)
5319                         goto fail;
5320                 else
5321                         priv->fw_state = FW_STATE_LOADING_PREF;
5322                 break;
5323
5324         case FW_STATE_LOADING_PREF:
5325                 if (!fw) {
5326                         if (priv->fw_alt) {
5327                                 rc = mwl8k_request_alt_fw(priv);
5328                                 if (rc)
5329                                         goto fail;
5330                                 priv->fw_state = FW_STATE_LOADING_ALT;
5331                         } else
5332                                 goto fail;
5333                 } else {
5334                         priv->fw_ucode = fw;
5335                         rc = mwl8k_firmware_load_success(priv);
5336                         if (rc)
5337                                 goto fail;
5338                         else
5339                                 complete(&priv->firmware_loading_complete);
5340                 }
5341                 break;
5342
5343         case FW_STATE_LOADING_ALT:
5344                 if (!fw) {
5345                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5346                                pci_name(priv->pdev), di->helper_image);
5347                         goto fail;
5348                 }
5349                 priv->fw_ucode = fw;
5350                 rc = mwl8k_firmware_load_success(priv);
5351                 if (rc)
5352                         goto fail;
5353                 else
5354                         complete(&priv->firmware_loading_complete);
5355                 break;
5356
5357         default:
5358                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5359                        MWL8K_NAME, priv->fw_state);
5360                 BUG_ON(1);
5361         }
5362
5363         return;
5364
5365 fail:
5366         priv->fw_state = FW_STATE_ERROR;
5367         complete(&priv->firmware_loading_complete);
5368         device_release_driver(&priv->pdev->dev);
5369         mwl8k_release_firmware(priv);
5370 }
5371
5372 #define MAX_RESTART_ATTEMPTS 1
5373 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5374                                bool nowait)
5375 {
5376         struct mwl8k_priv *priv = hw->priv;
5377         int rc;
5378         int count = MAX_RESTART_ATTEMPTS;
5379
5380 retry:
5381         /* Reset firmware and hardware */
5382         mwl8k_hw_reset(priv);
5383
5384         /* Ask userland hotplug daemon for the device firmware */
5385         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5386         if (rc) {
5387                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5388                 return rc;
5389         }
5390
5391         if (nowait)
5392                 return rc;
5393
5394         /* Load firmware into hardware */
5395         rc = mwl8k_load_firmware(hw);
5396         if (rc)
5397                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5398
5399         /* Reclaim memory once firmware is successfully loaded */
5400         mwl8k_release_firmware(priv);
5401
5402         if (rc && count) {
5403                 /* FW did not start successfully;
5404                  * lets try one more time
5405                  */
5406                 count--;
5407                 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5408                 msleep(20);
5409                 goto retry;
5410         }
5411
5412         return rc;
5413 }
5414
5415 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5416 {
5417         struct mwl8k_priv *priv = hw->priv;
5418         int rc = 0;
5419         int i;
5420
5421         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5422                 rc = mwl8k_txq_init(hw, i);
5423                 if (rc)
5424                         break;
5425                 if (priv->ap_fw)
5426                         iowrite32(priv->txq[i].txd_dma,
5427                                   priv->sram + priv->txq_offset[i]);
5428         }
5429         return rc;
5430 }
5431
5432 /* initialize hw after successfully loading a firmware image */
5433 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5434 {
5435         struct mwl8k_priv *priv = hw->priv;
5436         int rc = 0;
5437         int i;
5438
5439         if (priv->ap_fw) {
5440                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5441                 if (priv->rxd_ops == NULL) {
5442                         wiphy_err(hw->wiphy,
5443                                   "Driver does not have AP firmware image support for this hardware\n");
5444                         goto err_stop_firmware;
5445                 }
5446         } else {
5447                 priv->rxd_ops = &rxd_sta_ops;
5448         }
5449
5450         priv->sniffer_enabled = false;
5451         priv->wmm_enabled = false;
5452         priv->pending_tx_pkts = 0;
5453
5454         rc = mwl8k_rxq_init(hw, 0);
5455         if (rc)
5456                 goto err_stop_firmware;
5457         rxq_refill(hw, 0, INT_MAX);
5458
5459         /* For the sta firmware, we need to know the dma addresses of tx queues
5460          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5461          * prior to issuing this command.  But for the AP case, we learn the
5462          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5463          * case we must initialize the tx queues after.
5464          */
5465         priv->num_ampdu_queues = 0;
5466         if (!priv->ap_fw) {
5467                 rc = mwl8k_init_txqs(hw);
5468                 if (rc)
5469                         goto err_free_queues;
5470         }
5471
5472         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5473         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5474         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5475                   MWL8K_A2H_INT_BA_WATCHDOG,
5476                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5477         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5478                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5479
5480         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5481                          IRQF_SHARED, MWL8K_NAME, hw);
5482         if (rc) {
5483                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5484                 goto err_free_queues;
5485         }
5486
5487         /*
5488          * When hw restart is requested,
5489          * mac80211 will take care of clearing
5490          * the ampdu streams, so do not clear
5491          * the ampdu state here
5492          */
5493         if (!priv->hw_restart_in_progress)
5494                 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5495
5496         /*
5497          * Temporarily enable interrupts.  Initial firmware host
5498          * commands use interrupts and avoid polling.  Disable
5499          * interrupts when done.
5500          */
5501         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5502
5503         /* Get config data, mac addrs etc */
5504         if (priv->ap_fw) {
5505                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5506                 if (!rc)
5507                         rc = mwl8k_init_txqs(hw);
5508                 if (!rc)
5509                         rc = mwl8k_cmd_set_hw_spec(hw);
5510         } else {
5511                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5512         }
5513         if (rc) {
5514                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5515                 goto err_free_irq;
5516         }
5517
5518         /* Turn radio off */
5519         rc = mwl8k_cmd_radio_disable(hw);
5520         if (rc) {
5521                 wiphy_err(hw->wiphy, "Cannot disable\n");
5522                 goto err_free_irq;
5523         }
5524
5525         /* Clear MAC address */
5526         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5527         if (rc) {
5528                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5529                 goto err_free_irq;
5530         }
5531
5532         /* Disable interrupts */
5533         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5534         free_irq(priv->pdev->irq, hw);
5535
5536         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5537                    priv->device_info->part_name,
5538                    priv->hw_rev, hw->wiphy->perm_addr,
5539                    priv->ap_fw ? "AP" : "STA",
5540                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5541                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5542
5543         return 0;
5544
5545 err_free_irq:
5546         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5547         free_irq(priv->pdev->irq, hw);
5548
5549 err_free_queues:
5550         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5551                 mwl8k_txq_deinit(hw, i);
5552         mwl8k_rxq_deinit(hw, 0);
5553
5554 err_stop_firmware:
5555         mwl8k_hw_reset(priv);
5556
5557         return rc;
5558 }
5559
5560 /*
5561  * invoke mwl8k_reload_firmware to change the firmware image after the device
5562  * has already been registered
5563  */
5564 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5565 {
5566         int i, rc = 0;
5567         struct mwl8k_priv *priv = hw->priv;
5568         struct mwl8k_vif *vif, *tmp_vif;
5569
5570         mwl8k_stop(hw);
5571         mwl8k_rxq_deinit(hw, 0);
5572
5573         /*
5574          * All the existing interfaces are re-added by the ieee80211_reconfig;
5575          * which means driver should remove existing interfaces before calling
5576          * ieee80211_restart_hw
5577          */
5578         if (priv->hw_restart_in_progress)
5579                 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5580                         mwl8k_remove_vif(priv, vif);
5581
5582         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5583                 mwl8k_txq_deinit(hw, i);
5584
5585         rc = mwl8k_init_firmware(hw, fw_image, false);
5586         if (rc)
5587                 goto fail;
5588
5589         rc = mwl8k_probe_hw(hw);
5590         if (rc)
5591                 goto fail;
5592
5593         if (priv->hw_restart_in_progress)
5594                 return rc;
5595
5596         rc = mwl8k_start(hw);
5597         if (rc)
5598                 goto fail;
5599
5600         rc = mwl8k_config(hw, ~0);
5601         if (rc)
5602                 goto fail;
5603
5604         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5605                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5606                 if (rc)
5607                         goto fail;
5608         }
5609
5610         return rc;
5611
5612 fail:
5613         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5614         return rc;
5615 }
5616
5617 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5618 {
5619         struct ieee80211_hw *hw = priv->hw;
5620         int i, rc;
5621
5622         rc = mwl8k_load_firmware(hw);
5623         mwl8k_release_firmware(priv);
5624         if (rc) {
5625                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5626                 return rc;
5627         }
5628
5629         /*
5630          * Extra headroom is the size of the required DMA header
5631          * minus the size of the smallest 802.11 frame (CTS frame).
5632          */
5633         hw->extra_tx_headroom =
5634                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5635
5636         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5637
5638         hw->channel_change_time = 10;
5639
5640         hw->queues = MWL8K_TX_WMM_QUEUES;
5641
5642         /* Set rssi values to dBm */
5643         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5644
5645         /*
5646          * Ask mac80211 to not to trigger PS mode
5647          * based on PM bit of incoming frames.
5648          */
5649         if (priv->ap_fw)
5650                 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5651
5652         hw->vif_data_size = sizeof(struct mwl8k_vif);
5653         hw->sta_data_size = sizeof(struct mwl8k_sta);
5654
5655         priv->macids_used = 0;
5656         INIT_LIST_HEAD(&priv->vif_list);
5657
5658         /* Set default radio state and preamble */
5659         priv->radio_on = false;
5660         priv->radio_short_preamble = false;
5661
5662         /* Finalize join worker */
5663         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5664         /* Handle watchdog ba events */
5665         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5666         /* To reload the firmware if it crashes */
5667         INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5668
5669         /* TX reclaim and RX tasklets.  */
5670         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5671         tasklet_disable(&priv->poll_tx_task);
5672         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5673         tasklet_disable(&priv->poll_rx_task);
5674
5675         /* Power management cookie */
5676         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5677         if (priv->cookie == NULL)
5678                 return -ENOMEM;
5679
5680         mutex_init(&priv->fw_mutex);
5681         priv->fw_mutex_owner = NULL;
5682         priv->fw_mutex_depth = 0;
5683         priv->hostcmd_wait = NULL;
5684
5685         spin_lock_init(&priv->tx_lock);
5686
5687         spin_lock_init(&priv->stream_lock);
5688
5689         priv->tx_wait = NULL;
5690
5691         rc = mwl8k_probe_hw(hw);
5692         if (rc)
5693                 goto err_free_cookie;
5694
5695         hw->wiphy->interface_modes = 0;
5696         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5697                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5698         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5699                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5700
5701         rc = ieee80211_register_hw(hw);
5702         if (rc) {
5703                 wiphy_err(hw->wiphy, "Cannot register device\n");
5704                 goto err_unprobe_hw;
5705         }
5706
5707         return 0;
5708
5709 err_unprobe_hw:
5710         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5711                 mwl8k_txq_deinit(hw, i);
5712         mwl8k_rxq_deinit(hw, 0);
5713
5714 err_free_cookie:
5715         if (priv->cookie != NULL)
5716                 pci_free_consistent(priv->pdev, 4,
5717                                 priv->cookie, priv->cookie_dma);
5718
5719         return rc;
5720 }
5721 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5722                                  const struct pci_device_id *id)
5723 {
5724         static int printed_version;
5725         struct ieee80211_hw *hw;
5726         struct mwl8k_priv *priv;
5727         struct mwl8k_device_info *di;
5728         int rc;
5729
5730         if (!printed_version) {
5731                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5732                 printed_version = 1;
5733         }
5734
5735
5736         rc = pci_enable_device(pdev);
5737         if (rc) {
5738                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5739                        MWL8K_NAME);
5740                 return rc;
5741         }
5742
5743         rc = pci_request_regions(pdev, MWL8K_NAME);
5744         if (rc) {
5745                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5746                        MWL8K_NAME);
5747                 goto err_disable_device;
5748         }
5749
5750         pci_set_master(pdev);
5751
5752
5753         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5754         if (hw == NULL) {
5755                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5756                 rc = -ENOMEM;
5757                 goto err_free_reg;
5758         }
5759
5760         SET_IEEE80211_DEV(hw, &pdev->dev);
5761         pci_set_drvdata(pdev, hw);
5762
5763         priv = hw->priv;
5764         priv->hw = hw;
5765         priv->pdev = pdev;
5766         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5767
5768
5769         priv->sram = pci_iomap(pdev, 0, 0x10000);
5770         if (priv->sram == NULL) {
5771                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5772                 goto err_iounmap;
5773         }
5774
5775         /*
5776          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5777          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5778          */
5779         priv->regs = pci_iomap(pdev, 1, 0x10000);
5780         if (priv->regs == NULL) {
5781                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5782                 if (priv->regs == NULL) {
5783                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5784                         goto err_iounmap;
5785                 }
5786         }
5787
5788         /*
5789          * Choose the initial fw image depending on user input.  If a second
5790          * image is available, make it the alternative image that will be
5791          * loaded if the first one fails.
5792          */
5793         init_completion(&priv->firmware_loading_complete);
5794         di = priv->device_info;
5795         if (ap_mode_default && di->fw_image_ap) {
5796                 priv->fw_pref = di->fw_image_ap;
5797                 priv->fw_alt = di->fw_image_sta;
5798         } else if (!ap_mode_default && di->fw_image_sta) {
5799                 priv->fw_pref = di->fw_image_sta;
5800                 priv->fw_alt = di->fw_image_ap;
5801         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5802                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5803                 priv->fw_pref = di->fw_image_sta;
5804         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5805                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5806                 priv->fw_pref = di->fw_image_ap;
5807         }
5808         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5809         if (rc)
5810                 goto err_stop_firmware;
5811
5812         priv->hw_restart_in_progress = false;
5813
5814         return rc;
5815
5816 err_stop_firmware:
5817         mwl8k_hw_reset(priv);
5818
5819 err_iounmap:
5820         if (priv->regs != NULL)
5821                 pci_iounmap(pdev, priv->regs);
5822
5823         if (priv->sram != NULL)
5824                 pci_iounmap(pdev, priv->sram);
5825
5826         pci_set_drvdata(pdev, NULL);
5827         ieee80211_free_hw(hw);
5828
5829 err_free_reg:
5830         pci_release_regions(pdev);
5831
5832 err_disable_device:
5833         pci_disable_device(pdev);
5834
5835         return rc;
5836 }
5837
5838 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5839 {
5840         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5841 }
5842
5843 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5844 {
5845         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5846         struct mwl8k_priv *priv;
5847         int i;
5848
5849         if (hw == NULL)
5850                 return;
5851         priv = hw->priv;
5852
5853         wait_for_completion(&priv->firmware_loading_complete);
5854
5855         if (priv->fw_state == FW_STATE_ERROR) {
5856                 mwl8k_hw_reset(priv);
5857                 goto unmap;
5858         }
5859
5860         ieee80211_stop_queues(hw);
5861
5862         ieee80211_unregister_hw(hw);
5863
5864         /* Remove TX reclaim and RX tasklets.  */
5865         tasklet_kill(&priv->poll_tx_task);
5866         tasklet_kill(&priv->poll_rx_task);
5867
5868         /* Stop hardware */
5869         mwl8k_hw_reset(priv);
5870
5871         /* Return all skbs to mac80211 */
5872         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5873                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5874
5875         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5876                 mwl8k_txq_deinit(hw, i);
5877
5878         mwl8k_rxq_deinit(hw, 0);
5879
5880         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5881
5882 unmap:
5883         pci_iounmap(pdev, priv->regs);
5884         pci_iounmap(pdev, priv->sram);
5885         pci_set_drvdata(pdev, NULL);
5886         ieee80211_free_hw(hw);
5887         pci_release_regions(pdev);
5888         pci_disable_device(pdev);
5889 }
5890
5891 static struct pci_driver mwl8k_driver = {
5892         .name           = MWL8K_NAME,
5893         .id_table       = mwl8k_pci_id_table,
5894         .probe          = mwl8k_probe,
5895         .remove         = __devexit_p(mwl8k_remove),
5896         .shutdown       = __devexit_p(mwl8k_shutdown),
5897 };
5898
5899 module_pci_driver(mwl8k_driver);
5900
5901 MODULE_DESCRIPTION(MWL8K_DESC);
5902 MODULE_VERSION(MWL8K_VERSION);
5903 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5904 MODULE_LICENSE("GPL");