6383 lines · c
1/*2 * drivers/net/wireless/mwl8k.c3 * Driver for Marvell TOPDOG 802.11 Wireless cards4 *5 * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.6 *7 * This file is licensed under the terms of the GNU General Public8 * License version 2. This program is licensed "as is" without any9 * warranty of any kind, whether express or implied.10 */11 12#include <linux/interrupt.h>13#include <linux/module.h>14#include <linux/kernel.h>15#include <linux/sched.h>16#include <linux/spinlock.h>17#include <linux/list.h>18#include <linux/pci.h>19#include <linux/delay.h>20#include <linux/completion.h>21#include <linux/etherdevice.h>22#include <linux/slab.h>23#include <net/mac80211.h>24#include <linux/moduleparam.h>25#include <linux/firmware.h>26#include <linux/workqueue.h>27 28#define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"29#define MWL8K_NAME KBUILD_MODNAME30#define MWL8K_VERSION "0.13"31 32/* Module parameters */33static bool ap_mode_default;34module_param(ap_mode_default, bool, 0);35MODULE_PARM_DESC(ap_mode_default,36 "Set to 1 to make ap mode the default instead of sta mode");37 38/* Register definitions */39#define MWL8K_HIU_GEN_PTR 0x00000c1040#define MWL8K_MODE_STA 0x0000005a41#define MWL8K_MODE_AP 0x000000a542#define MWL8K_HIU_INT_CODE 0x00000c1443#define MWL8K_FWSTA_READY 0xf0f1f2f444#define MWL8K_FWAP_READY 0xf1f2f4a545#define MWL8K_INT_CODE_CMD_FINISHED 0x0000000546#define MWL8K_HIU_SCRATCH 0x00000c4047 48/* Host->device communications */49#define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c1850#define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c51#define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c2052#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c2453#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c2854#define MWL8K_H2A_INT_DUMMY (1 << 20)55#define MWL8K_H2A_INT_RESET (1 << 15)56#define MWL8K_H2A_INT_DOORBELL (1 << 1)57#define MWL8K_H2A_INT_PPA_READY (1 << 0)58 59/* Device->host communications */60#define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c61#define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c3062#define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c3463#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c3864#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c65#define MWL8K_A2H_INT_DUMMY (1 << 20)66#define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)67#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)68#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)69#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)70#define MWL8K_A2H_INT_RADIO_ON (1 << 6)71#define MWL8K_A2H_INT_RADIO_OFF (1 << 5)72#define MWL8K_A2H_INT_MAC_EVENT (1 << 3)73#define MWL8K_A2H_INT_OPC_DONE (1 << 2)74#define MWL8K_A2H_INT_RX_READY (1 << 1)75#define MWL8K_A2H_INT_TX_DONE (1 << 0)76 77/* HW micro second timer register78 * located at offset 0xA600. This79 * will be used to timestamp tx80 * packets.81 */82 83#define MWL8K_HW_TIMER_REGISTER 0x0000a60084#define BBU_RXRDY_CNT_REG 0x0000a86085#define NOK_CCA_CNT_REG 0x0000a6a086#define BBU_AVG_NOISE_VAL 0x6787 88#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \89 MWL8K_A2H_INT_CHNL_SWITCHED | \90 MWL8K_A2H_INT_QUEUE_EMPTY | \91 MWL8K_A2H_INT_RADAR_DETECT | \92 MWL8K_A2H_INT_RADIO_ON | \93 MWL8K_A2H_INT_RADIO_OFF | \94 MWL8K_A2H_INT_MAC_EVENT | \95 MWL8K_A2H_INT_OPC_DONE | \96 MWL8K_A2H_INT_RX_READY | \97 MWL8K_A2H_INT_TX_DONE | \98 MWL8K_A2H_INT_BA_WATCHDOG)99 100#define MWL8K_RX_QUEUES 1101#define MWL8K_TX_WMM_QUEUES 4102#define MWL8K_MAX_AMPDU_QUEUES 8103#define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)104#define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)105 106/* txpriorities are mapped with hw queues.107 * Each hw queue has a txpriority.108 */109#define TOTAL_HW_TX_QUEUES 8110 111/* Each HW queue can have one AMPDU stream.112 * But, because one of the hw queue is reserved,113 * maximum AMPDU queues that can be created are114 * one short of total tx queues.115 */116#define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)117 118#define MWL8K_NUM_CHANS 18119 120struct rxd_ops {121 int rxd_size;122 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);123 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);124 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,125 __le16 *qos, s8 *noise);126};127 128struct mwl8k_device_info {129 char *part_name;130 char *helper_image;131 char *fw_image_sta;132 char *fw_image_ap;133 struct rxd_ops *ap_rxd_ops;134 u32 fw_api_ap;135};136 137struct mwl8k_rx_queue {138 int rxd_count;139 140 /* hw receives here */141 int head;142 143 /* refill descs here */144 int tail;145 146 void *rxd;147 dma_addr_t rxd_dma;148 struct {149 struct sk_buff *skb;150 DEFINE_DMA_UNMAP_ADDR(dma);151 } *buf;152};153 154struct mwl8k_tx_queue {155 /* hw transmits here */156 int head;157 158 /* sw appends here */159 int tail;160 161 unsigned int len;162 struct mwl8k_tx_desc *txd;163 dma_addr_t txd_dma;164 struct sk_buff **skb;165};166 167enum {168 AMPDU_NO_STREAM,169 AMPDU_STREAM_NEW,170 AMPDU_STREAM_IN_PROGRESS,171 AMPDU_STREAM_ACTIVE,172};173 174struct mwl8k_ampdu_stream {175 struct ieee80211_sta *sta;176 u8 tid;177 u8 state;178 u8 idx;179};180 181struct mwl8k_priv {182 struct ieee80211_hw *hw;183 struct pci_dev *pdev;184 int irq;185 186 struct mwl8k_device_info *device_info;187 188 void __iomem *sram;189 void __iomem *regs;190 191 /* firmware */192 const struct firmware *fw_helper;193 const struct firmware *fw_ucode;194 195 /* hardware/firmware parameters */196 bool ap_fw;197 struct rxd_ops *rxd_ops;198 struct ieee80211_supported_band band_24;199 struct ieee80211_channel channels_24[14];200 struct ieee80211_rate rates_24[13];201 struct ieee80211_supported_band band_50;202 struct ieee80211_channel channels_50[9];203 struct ieee80211_rate rates_50[8];204 u32 ap_macids_supported;205 u32 sta_macids_supported;206 207 /* Ampdu stream information */208 u8 num_ampdu_queues;209 spinlock_t stream_lock;210 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];211 struct work_struct watchdog_ba_handle;212 213 /* firmware access */214 struct mutex fw_mutex;215 struct task_struct *fw_mutex_owner;216 struct task_struct *hw_restart_owner;217 int fw_mutex_depth;218 struct completion *hostcmd_wait;219 220 atomic_t watchdog_event_pending;221 222 /* lock held over TX and TX reap */223 spinlock_t tx_lock;224 225 /* TX quiesce completion, protected by fw_mutex and tx_lock */226 struct completion *tx_wait;227 228 /* List of interfaces. */229 u32 macids_used;230 struct list_head vif_list;231 232 /* power management status cookie from firmware */233 u32 *cookie;234 dma_addr_t cookie_dma;235 236 u16 num_mcaddrs;237 u8 hw_rev;238 u32 fw_rev;239 u32 caps;240 241 /*242 * Running count of TX packets in flight, to avoid243 * iterating over the transmit rings each time.244 */245 int pending_tx_pkts;246 247 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];248 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];249 u32 txq_offset[MWL8K_MAX_TX_QUEUES];250 251 bool radio_on;252 bool radio_short_preamble;253 bool sniffer_enabled;254 bool wmm_enabled;255 256 /* XXX need to convert this to handle multiple interfaces */257 bool capture_beacon;258 u8 capture_bssid[ETH_ALEN];259 struct sk_buff *beacon_skb;260 261 /*262 * This FJ worker has to be global as it is scheduled from the263 * RX handler. At this point we don't know which interface it264 * belongs to until the list of bssids waiting to complete join265 * is checked.266 */267 struct work_struct finalize_join_worker;268 269 /* Tasklet to perform TX reclaim. */270 struct tasklet_struct poll_tx_task;271 272 /* Tasklet to perform RX. */273 struct tasklet_struct poll_rx_task;274 275 /* Most recently reported noise in dBm */276 s8 noise;277 278 /*279 * preserve the queue configurations so they can be restored if/when280 * the firmware image is swapped.281 */282 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];283 284 /* To perform the task of reloading the firmware */285 struct work_struct fw_reload;286 bool hw_restart_in_progress;287 288 /* async firmware loading state */289 unsigned fw_state;290 char *fw_pref;291 char *fw_alt;292 bool is_8764;293 struct completion firmware_loading_complete;294 295 /* bitmap of running BSSes */296 u32 running_bsses;297 298 /* ACS related */299 bool sw_scan_start;300 struct ieee80211_channel *acs_chan;301 unsigned long channel_time;302 struct survey_info survey[MWL8K_NUM_CHANS];303};304 305#define MAX_WEP_KEY_LEN 13306#define NUM_WEP_KEYS 4307 308/* Per interface specific private data */309struct mwl8k_vif {310 struct list_head list;311 struct ieee80211_vif *vif;312 313 /* Firmware macid for this vif. */314 int macid;315 316 /* Non AMPDU sequence number assigned by driver. */317 u16 seqno;318 319 /* Saved WEP keys */320 struct {321 u8 enabled;322 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];323 } wep_key_conf[NUM_WEP_KEYS];324 325 /* BSSID */326 u8 bssid[ETH_ALEN];327 328 /* A flag to indicate is HW crypto is enabled for this bssid */329 bool is_hw_crypto_enabled;330};331#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))332#define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))333 334struct tx_traffic_info {335 u32 start_time;336 u32 pkts;337};338 339#define MWL8K_MAX_TID 8340struct mwl8k_sta {341 /* Index into station database. Returned by UPDATE_STADB. */342 u8 peer_id;343 u8 is_ampdu_allowed;344 struct tx_traffic_info tx_stats[MWL8K_MAX_TID];345};346#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))347 348static const struct ieee80211_channel mwl8k_channels_24[] = {349 { .band = NL80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },350 { .band = NL80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },351 { .band = NL80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },352 { .band = NL80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },353 { .band = NL80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },354 { .band = NL80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },355 { .band = NL80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },356 { .band = NL80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },357 { .band = NL80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },358 { .band = NL80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },359 { .band = NL80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },360 { .band = NL80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },361 { .band = NL80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },362 { .band = NL80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },363};364 365static const struct ieee80211_rate mwl8k_rates_24[] = {366 { .bitrate = 10, .hw_value = 2, },367 { .bitrate = 20, .hw_value = 4, },368 { .bitrate = 55, .hw_value = 11, },369 { .bitrate = 110, .hw_value = 22, },370 { .bitrate = 220, .hw_value = 44, },371 { .bitrate = 60, .hw_value = 12, },372 { .bitrate = 90, .hw_value = 18, },373 { .bitrate = 120, .hw_value = 24, },374 { .bitrate = 180, .hw_value = 36, },375 { .bitrate = 240, .hw_value = 48, },376 { .bitrate = 360, .hw_value = 72, },377 { .bitrate = 480, .hw_value = 96, },378 { .bitrate = 540, .hw_value = 108, },379};380 381static const struct ieee80211_channel mwl8k_channels_50[] = {382 { .band = NL80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },383 { .band = NL80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },384 { .band = NL80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },385 { .band = NL80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },386 { .band = NL80211_BAND_5GHZ, .center_freq = 5745, .hw_value = 149, },387 { .band = NL80211_BAND_5GHZ, .center_freq = 5765, .hw_value = 153, },388 { .band = NL80211_BAND_5GHZ, .center_freq = 5785, .hw_value = 157, },389 { .band = NL80211_BAND_5GHZ, .center_freq = 5805, .hw_value = 161, },390 { .band = NL80211_BAND_5GHZ, .center_freq = 5825, .hw_value = 165, },391};392 393static const struct ieee80211_rate mwl8k_rates_50[] = {394 { .bitrate = 60, .hw_value = 12, },395 { .bitrate = 90, .hw_value = 18, },396 { .bitrate = 120, .hw_value = 24, },397 { .bitrate = 180, .hw_value = 36, },398 { .bitrate = 240, .hw_value = 48, },399 { .bitrate = 360, .hw_value = 72, },400 { .bitrate = 480, .hw_value = 96, },401 { .bitrate = 540, .hw_value = 108, },402};403 404/* Set or get info from Firmware */405#define MWL8K_CMD_GET 0x0000406#define MWL8K_CMD_SET 0x0001407#define MWL8K_CMD_SET_LIST 0x0002408 409/* Firmware command codes */410#define MWL8K_CMD_CODE_DNLD 0x0001411#define MWL8K_CMD_GET_HW_SPEC 0x0003412#define MWL8K_CMD_SET_HW_SPEC 0x0004413#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010414#define MWL8K_CMD_GET_STAT 0x0014415#define MWL8K_CMD_BBP_REG_ACCESS 0x001a416#define MWL8K_CMD_RADIO_CONTROL 0x001c417#define MWL8K_CMD_RF_TX_POWER 0x001e418#define MWL8K_CMD_TX_POWER 0x001f419#define MWL8K_CMD_RF_ANTENNA 0x0020420#define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */421#define MWL8K_CMD_SET_PRE_SCAN 0x0107422#define MWL8K_CMD_SET_POST_SCAN 0x0108423#define MWL8K_CMD_SET_RF_CHANNEL 0x010a424#define MWL8K_CMD_SET_AID 0x010d425#define MWL8K_CMD_SET_RATE 0x0110426#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111427#define MWL8K_CMD_RTS_THRESHOLD 0x0113428#define MWL8K_CMD_SET_SLOT 0x0114429#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115430#define MWL8K_CMD_SET_WMM_MODE 0x0123431#define MWL8K_CMD_MIMO_CONFIG 0x0125432#define MWL8K_CMD_USE_FIXED_RATE 0x0126433#define MWL8K_CMD_ENABLE_SNIFFER 0x0150434#define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */435#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203436#define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205437#define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */438#define MWL8K_CMD_BSS_START 0x1100 /* per-vif */439#define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */440#define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */441#define MWL8K_CMD_UPDATE_STADB 0x1123442#define MWL8K_CMD_BASTREAM 0x1125443 444#define MWL8K_LEGACY_5G_RATE_OFFSET \445 (ARRAY_SIZE(mwl8k_rates_24) - ARRAY_SIZE(mwl8k_rates_50))446 447static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)448{449 u16 command = le16_to_cpu(cmd);450 451#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\452 snprintf(buf, bufsize, "%s", #x);\453 return buf;\454 } while (0)455 switch (command & ~0x8000) {456 MWL8K_CMDNAME(CODE_DNLD);457 MWL8K_CMDNAME(GET_HW_SPEC);458 MWL8K_CMDNAME(SET_HW_SPEC);459 MWL8K_CMDNAME(MAC_MULTICAST_ADR);460 MWL8K_CMDNAME(GET_STAT);461 MWL8K_CMDNAME(RADIO_CONTROL);462 MWL8K_CMDNAME(RF_TX_POWER);463 MWL8K_CMDNAME(TX_POWER);464 MWL8K_CMDNAME(RF_ANTENNA);465 MWL8K_CMDNAME(SET_BEACON);466 MWL8K_CMDNAME(SET_PRE_SCAN);467 MWL8K_CMDNAME(SET_POST_SCAN);468 MWL8K_CMDNAME(SET_RF_CHANNEL);469 MWL8K_CMDNAME(SET_AID);470 MWL8K_CMDNAME(SET_RATE);471 MWL8K_CMDNAME(SET_FINALIZE_JOIN);472 MWL8K_CMDNAME(RTS_THRESHOLD);473 MWL8K_CMDNAME(SET_SLOT);474 MWL8K_CMDNAME(SET_EDCA_PARAMS);475 MWL8K_CMDNAME(SET_WMM_MODE);476 MWL8K_CMDNAME(MIMO_CONFIG);477 MWL8K_CMDNAME(USE_FIXED_RATE);478 MWL8K_CMDNAME(ENABLE_SNIFFER);479 MWL8K_CMDNAME(SET_MAC_ADDR);480 MWL8K_CMDNAME(SET_RATEADAPT_MODE);481 MWL8K_CMDNAME(BSS_START);482 MWL8K_CMDNAME(SET_NEW_STN);483 MWL8K_CMDNAME(UPDATE_ENCRYPTION);484 MWL8K_CMDNAME(UPDATE_STADB);485 MWL8K_CMDNAME(BASTREAM);486 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);487 default:488 snprintf(buf, bufsize, "0x%x", cmd);489 }490#undef MWL8K_CMDNAME491 492 return buf;493}494 495/* Hardware and firmware reset */496static void mwl8k_hw_reset(struct mwl8k_priv *priv)497{498 iowrite32(MWL8K_H2A_INT_RESET,499 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);500 iowrite32(MWL8K_H2A_INT_RESET,501 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);502 msleep(20);503}504 505/* Release fw image */506static void mwl8k_release_fw(const struct firmware **fw)507{508 if (*fw == NULL)509 return;510 release_firmware(*fw);511 *fw = NULL;512}513 514static void mwl8k_release_firmware(struct mwl8k_priv *priv)515{516 mwl8k_release_fw(&priv->fw_ucode);517 mwl8k_release_fw(&priv->fw_helper);518}519 520/* states for asynchronous f/w loading */521static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);522enum {523 FW_STATE_INIT = 0,524 FW_STATE_LOADING_PREF,525 FW_STATE_LOADING_ALT,526 FW_STATE_ERROR,527};528 529/* Request fw image */530static int mwl8k_request_fw(struct mwl8k_priv *priv,531 const char *fname, const struct firmware **fw,532 bool nowait)533{534 /* release current image */535 if (*fw != NULL)536 mwl8k_release_fw(fw);537 538 if (nowait)539 return request_firmware_nowait(THIS_MODULE, 1, fname,540 &priv->pdev->dev, GFP_KERNEL,541 priv, mwl8k_fw_state_machine);542 else543 return request_firmware(fw, fname, &priv->pdev->dev);544}545 546static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,547 bool nowait)548{549 struct mwl8k_device_info *di = priv->device_info;550 int rc;551 552 if (di->helper_image != NULL) {553 if (nowait)554 rc = mwl8k_request_fw(priv, di->helper_image,555 &priv->fw_helper, true);556 else557 rc = mwl8k_request_fw(priv, di->helper_image,558 &priv->fw_helper, false);559 if (rc)560 printk(KERN_ERR "%s: Error requesting helper fw %s\n",561 pci_name(priv->pdev), di->helper_image);562 563 if (rc || nowait)564 return rc;565 }566 567 if (nowait) {568 /*569 * if we get here, no helper image is needed. Skip the570 * FW_STATE_INIT state.571 */572 priv->fw_state = FW_STATE_LOADING_PREF;573 rc = mwl8k_request_fw(priv, fw_image,574 &priv->fw_ucode,575 true);576 } else577 rc = mwl8k_request_fw(priv, fw_image,578 &priv->fw_ucode, false);579 if (rc) {580 printk(KERN_ERR "%s: Error requesting firmware file %s\n",581 pci_name(priv->pdev), fw_image);582 mwl8k_release_fw(&priv->fw_helper);583 return rc;584 }585 586 return 0;587}588 589struct mwl8k_cmd_pkt {590 /* New members MUST be added within the __struct_group() macro below. */591 __struct_group(mwl8k_cmd_pkt_hdr, hdr, __packed,592 __le16 code;593 __le16 length;594 __u8 seq_num;595 __u8 macid;596 __le16 result;597 );598 char payload[];599} __packed;600static_assert(offsetof(struct mwl8k_cmd_pkt, payload) == sizeof(struct mwl8k_cmd_pkt_hdr),601 "struct member likely outside of __struct_group()");602 603/*604 * Firmware loading.605 */606static int607mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)608{609 void __iomem *regs = priv->regs;610 dma_addr_t dma_addr;611 int loops;612 613 dma_addr = dma_map_single(&priv->pdev->dev, data, length,614 DMA_TO_DEVICE);615 if (dma_mapping_error(&priv->pdev->dev, dma_addr))616 return -ENOMEM;617 618 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);619 iowrite32(0, regs + MWL8K_HIU_INT_CODE);620 iowrite32(MWL8K_H2A_INT_DOORBELL,621 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);622 iowrite32(MWL8K_H2A_INT_DUMMY,623 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);624 625 loops = 1000;626 do {627 u32 int_code;628 if (priv->is_8764) {629 int_code = ioread32(regs +630 MWL8K_HIU_H2A_INTERRUPT_STATUS);631 if (int_code == 0)632 break;633 } else {634 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);635 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {636 iowrite32(0, regs + MWL8K_HIU_INT_CODE);637 break;638 }639 }640 cond_resched();641 udelay(1);642 } while (--loops);643 644 dma_unmap_single(&priv->pdev->dev, dma_addr, length, DMA_TO_DEVICE);645 646 return loops ? 0 : -ETIMEDOUT;647}648 649static int mwl8k_load_fw_image(struct mwl8k_priv *priv,650 const u8 *data, size_t length)651{652 struct mwl8k_cmd_pkt *cmd;653 int done;654 int rc = 0;655 656 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);657 if (cmd == NULL)658 return -ENOMEM;659 660 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);661 cmd->seq_num = 0;662 cmd->macid = 0;663 cmd->result = 0;664 665 done = 0;666 while (length) {667 int block_size = length > 256 ? 256 : length;668 669 memcpy(cmd->payload, data + done, block_size);670 cmd->length = cpu_to_le16(block_size);671 672 rc = mwl8k_send_fw_load_cmd(priv, cmd,673 sizeof(*cmd) + block_size);674 if (rc)675 break;676 677 done += block_size;678 length -= block_size;679 }680 681 if (!rc) {682 cmd->length = 0;683 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));684 }685 686 kfree(cmd);687 688 return rc;689}690 691static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,692 const u8 *data, size_t length)693{694 unsigned char *buffer;695 int may_continue, rc = 0;696 u32 done, prev_block_size;697 698 buffer = kmalloc(1024, GFP_KERNEL);699 if (buffer == NULL)700 return -ENOMEM;701 702 done = 0;703 prev_block_size = 0;704 may_continue = 1000;705 while (may_continue > 0) {706 u32 block_size;707 708 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);709 if (block_size & 1) {710 block_size &= ~1;711 may_continue--;712 } else {713 done += prev_block_size;714 length -= prev_block_size;715 }716 717 if (block_size > 1024 || block_size > length) {718 rc = -EOVERFLOW;719 break;720 }721 722 if (length == 0) {723 rc = 0;724 break;725 }726 727 if (block_size == 0) {728 rc = -EPROTO;729 may_continue--;730 udelay(1);731 continue;732 }733 734 prev_block_size = block_size;735 memcpy(buffer, data + done, block_size);736 737 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);738 if (rc)739 break;740 }741 742 if (!rc && length != 0)743 rc = -EREMOTEIO;744 745 kfree(buffer);746 747 return rc;748}749 750static int mwl8k_load_firmware(struct ieee80211_hw *hw)751{752 struct mwl8k_priv *priv = hw->priv;753 const struct firmware *fw = priv->fw_ucode;754 int rc;755 int loops;756 757 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {758 const struct firmware *helper = priv->fw_helper;759 760 if (helper == NULL) {761 printk(KERN_ERR "%s: helper image needed but none "762 "given\n", pci_name(priv->pdev));763 return -EINVAL;764 }765 766 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);767 if (rc) {768 printk(KERN_ERR "%s: unable to load firmware "769 "helper image\n", pci_name(priv->pdev));770 return rc;771 }772 msleep(20);773 774 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);775 } else {776 if (priv->is_8764)777 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);778 else779 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);780 }781 782 if (rc) {783 printk(KERN_ERR "%s: unable to load firmware image\n",784 pci_name(priv->pdev));785 return rc;786 }787 788 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);789 790 loops = 500000;791 do {792 u32 ready_code;793 794 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);795 if (ready_code == MWL8K_FWAP_READY) {796 priv->ap_fw = true;797 break;798 } else if (ready_code == MWL8K_FWSTA_READY) {799 priv->ap_fw = false;800 break;801 }802 803 cond_resched();804 udelay(1);805 } while (--loops);806 807 return loops ? 0 : -ETIMEDOUT;808}809 810 811/* DMA header used by firmware and hardware. */812struct mwl8k_dma_data {813 __le16 fwlen;814 struct ieee80211_hdr wh;815 char data[];816} __packed __aligned(2);817 818/* Routines to add/remove DMA header from skb. */819static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)820{821 struct mwl8k_dma_data *tr;822 int hdrlen;823 824 tr = (struct mwl8k_dma_data *)skb->data;825 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);826 827 if (hdrlen != sizeof(tr->wh)) {828 if (ieee80211_is_data_qos(tr->wh.frame_control)) {829 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);830 *((__le16 *)(tr->data - 2)) = qos;831 } else {832 memmove(tr->data - hdrlen, &tr->wh, hdrlen);833 }834 }835 836 if (hdrlen != sizeof(*tr))837 skb_pull(skb, sizeof(*tr) - hdrlen);838}839 840#define REDUCED_TX_HEADROOM 8841 842static void843mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,844 int head_pad, int tail_pad)845{846 struct ieee80211_hdr *wh;847 int hdrlen;848 int reqd_hdrlen;849 struct mwl8k_dma_data *tr;850 851 /*852 * Add a firmware DMA header; the firmware requires that we853 * present a 2-byte payload length followed by a 4-address854 * header (without QoS field), followed (optionally) by any855 * WEP/ExtIV header (but only filled in for CCMP).856 */857 wh = (struct ieee80211_hdr *)skb->data;858 859 hdrlen = ieee80211_hdrlen(wh->frame_control);860 861 /*862 * Check if skb_resize is required because of863 * tx_headroom adjustment.864 */865 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)866 + REDUCED_TX_HEADROOM))) {867 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {868 869 wiphy_err(priv->hw->wiphy,870 "Failed to reallocate TX buffer\n");871 return;872 }873 skb->truesize += REDUCED_TX_HEADROOM;874 }875 876 reqd_hdrlen = sizeof(*tr) + head_pad;877 878 if (hdrlen != reqd_hdrlen)879 skb_push(skb, reqd_hdrlen - hdrlen);880 881 if (ieee80211_is_data_qos(wh->frame_control))882 hdrlen -= IEEE80211_QOS_CTL_LEN;883 884 tr = (struct mwl8k_dma_data *)skb->data;885 if (wh != &tr->wh)886 memmove(&tr->wh, wh, hdrlen);887 if (hdrlen != sizeof(tr->wh))888 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);889 890 /*891 * Firmware length is the length of the fully formed "802.11892 * payload". That is, everything except for the 802.11 header.893 * This includes all crypto material including the MIC.894 */895 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);896}897 898static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,899 struct sk_buff *skb)900{901 struct ieee80211_hdr *wh;902 struct ieee80211_tx_info *tx_info;903 struct ieee80211_key_conf *key_conf;904 int data_pad;905 int head_pad = 0;906 907 wh = (struct ieee80211_hdr *)skb->data;908 909 tx_info = IEEE80211_SKB_CB(skb);910 911 key_conf = NULL;912 if (ieee80211_is_data(wh->frame_control))913 key_conf = tx_info->control.hw_key;914 915 /*916 * Make sure the packet header is in the DMA header format (4-address917 * without QoS), and add head & tail padding when HW crypto is enabled.918 *919 * We have the following trailer padding requirements:920 * - WEP: 4 trailer bytes (ICV)921 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)922 * - CCMP: 8 trailer bytes (MIC)923 */924 data_pad = 0;925 if (key_conf != NULL) {926 head_pad = key_conf->iv_len;927 switch (key_conf->cipher) {928 case WLAN_CIPHER_SUITE_WEP40:929 case WLAN_CIPHER_SUITE_WEP104:930 data_pad = 4;931 break;932 case WLAN_CIPHER_SUITE_TKIP:933 data_pad = 12;934 break;935 case WLAN_CIPHER_SUITE_CCMP:936 data_pad = 8;937 break;938 }939 }940 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);941}942 943/*944 * Packet reception for 88w8366/88w8764 AP firmware.945 */946struct mwl8k_rxd_ap {947 __le16 pkt_len;948 __u8 sq2;949 __u8 rate;950 __le32 pkt_phys_addr;951 __le32 next_rxd_phys_addr;952 __le16 qos_control;953 __le16 htsig2;954 __le32 hw_rssi_info;955 __le32 hw_noise_floor_info;956 __u8 noise_floor;957 __u8 pad0[3];958 __u8 rssi;959 __u8 rx_status;960 __u8 channel;961 __u8 rx_ctrl;962} __packed;963 964#define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80965#define MWL8K_AP_RATE_INFO_40MHZ 0x40966#define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)967 968#define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80969 970/* 8366/8764 AP rx_status bits */971#define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80972#define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF973#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02974#define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04975#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08976 977static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)978{979 struct mwl8k_rxd_ap *rxd = _rxd;980 981 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);982 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;983}984 985static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)986{987 struct mwl8k_rxd_ap *rxd = _rxd;988 989 rxd->pkt_len = cpu_to_le16(len);990 rxd->pkt_phys_addr = cpu_to_le32(addr);991 wmb();992 rxd->rx_ctrl = 0;993}994 995static int996mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,997 __le16 *qos, s8 *noise)998{999 struct mwl8k_rxd_ap *rxd = _rxd;1000 1001 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))1002 return -1;1003 rmb();1004 1005 memset(status, 0, sizeof(*status));1006 1007 status->signal = -rxd->rssi;1008 *noise = -rxd->noise_floor;1009 1010 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {1011 status->encoding = RX_ENC_HT;1012 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)1013 status->bw = RATE_INFO_BW_40;1014 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);1015 } else {1016 int i;1017 1018 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {1019 if (mwl8k_rates_24[i].hw_value == rxd->rate) {1020 status->rate_idx = i;1021 break;1022 }1023 }1024 }1025 1026 if (rxd->channel > 14) {1027 status->band = NL80211_BAND_5GHZ;1028 if (!(status->encoding == RX_ENC_HT) &&1029 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)1030 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;1031 } else {1032 status->band = NL80211_BAND_2GHZ;1033 }1034 status->freq = ieee80211_channel_to_frequency(rxd->channel,1035 status->band);1036 1037 *qos = rxd->qos_control;1038 1039 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&1040 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&1041 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))1042 status->flag |= RX_FLAG_MMIC_ERROR;1043 1044 return le16_to_cpu(rxd->pkt_len);1045}1046 1047static struct rxd_ops rxd_ap_ops = {1048 .rxd_size = sizeof(struct mwl8k_rxd_ap),1049 .rxd_init = mwl8k_rxd_ap_init,1050 .rxd_refill = mwl8k_rxd_ap_refill,1051 .rxd_process = mwl8k_rxd_ap_process,1052};1053 1054/*1055 * Packet reception for STA firmware.1056 */1057struct mwl8k_rxd_sta {1058 __le16 pkt_len;1059 __u8 link_quality;1060 __u8 noise_level;1061 __le32 pkt_phys_addr;1062 __le32 next_rxd_phys_addr;1063 __le16 qos_control;1064 __le16 rate_info;1065 __le32 pad0[4];1066 __u8 rssi;1067 __u8 channel;1068 __le16 pad1;1069 __u8 rx_ctrl;1070 __u8 rx_status;1071 __u8 pad2[2];1072} __packed;1073 1074#define MWL8K_STA_RATE_INFO_SHORTPRE 0x80001075#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)1076#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)1077#define MWL8K_STA_RATE_INFO_40MHZ 0x00041078#define MWL8K_STA_RATE_INFO_SHORTGI 0x00021079#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x00011080 1081#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x021082#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x041083/* ICV=0 or MIC=1 */1084#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x081085/* Key is uploaded only in failure case */1086#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x301087 1088static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)1089{1090 struct mwl8k_rxd_sta *rxd = _rxd;1091 1092 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);1093 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;1094}1095 1096static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)1097{1098 struct mwl8k_rxd_sta *rxd = _rxd;1099 1100 rxd->pkt_len = cpu_to_le16(len);1101 rxd->pkt_phys_addr = cpu_to_le32(addr);1102 wmb();1103 rxd->rx_ctrl = 0;1104}1105 1106static int1107mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,1108 __le16 *qos, s8 *noise)1109{1110 struct mwl8k_rxd_sta *rxd = _rxd;1111 u16 rate_info;1112 1113 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))1114 return -1;1115 rmb();1116 1117 rate_info = le16_to_cpu(rxd->rate_info);1118 1119 memset(status, 0, sizeof(*status));1120 1121 status->signal = -rxd->rssi;1122 *noise = -rxd->noise_level;1123 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);1124 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);1125 1126 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)1127 status->enc_flags |= RX_ENC_FLAG_SHORTPRE;1128 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)1129 status->bw = RATE_INFO_BW_40;1130 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)1131 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;1132 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)1133 status->encoding = RX_ENC_HT;1134 1135 if (rxd->channel > 14) {1136 status->band = NL80211_BAND_5GHZ;1137 if (!(status->encoding == RX_ENC_HT) &&1138 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)1139 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;1140 } else {1141 status->band = NL80211_BAND_2GHZ;1142 }1143 status->freq = ieee80211_channel_to_frequency(rxd->channel,1144 status->band);1145 1146 *qos = rxd->qos_control;1147 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&1148 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))1149 status->flag |= RX_FLAG_MMIC_ERROR;1150 1151 return le16_to_cpu(rxd->pkt_len);1152}1153 1154static struct rxd_ops rxd_sta_ops = {1155 .rxd_size = sizeof(struct mwl8k_rxd_sta),1156 .rxd_init = mwl8k_rxd_sta_init,1157 .rxd_refill = mwl8k_rxd_sta_refill,1158 .rxd_process = mwl8k_rxd_sta_process,1159};1160 1161 1162#define MWL8K_RX_DESCS 2561163#define MWL8K_RX_MAXSZ 38001164 1165static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)1166{1167 struct mwl8k_priv *priv = hw->priv;1168 struct mwl8k_rx_queue *rxq = priv->rxq + index;1169 int size;1170 int i;1171 1172 rxq->rxd_count = 0;1173 rxq->head = 0;1174 rxq->tail = 0;1175 1176 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;1177 1178 rxq->rxd = dma_alloc_coherent(&priv->pdev->dev, size, &rxq->rxd_dma,1179 GFP_KERNEL);1180 if (rxq->rxd == NULL) {1181 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");1182 return -ENOMEM;1183 }1184 1185 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);1186 if (rxq->buf == NULL) {1187 dma_free_coherent(&priv->pdev->dev, size, rxq->rxd,1188 rxq->rxd_dma);1189 return -ENOMEM;1190 }1191 1192 for (i = 0; i < MWL8K_RX_DESCS; i++) {1193 int desc_size;1194 void *rxd;1195 int nexti;1196 dma_addr_t next_dma_addr;1197 1198 desc_size = priv->rxd_ops->rxd_size;1199 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);1200 1201 nexti = i + 1;1202 if (nexti == MWL8K_RX_DESCS)1203 nexti = 0;1204 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);1205 1206 priv->rxd_ops->rxd_init(rxd, next_dma_addr);1207 }1208 1209 return 0;1210}1211 1212static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)1213{1214 struct mwl8k_priv *priv = hw->priv;1215 struct mwl8k_rx_queue *rxq = priv->rxq + index;1216 int refilled = 0;1217 1218 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {1219 struct sk_buff *skb;1220 dma_addr_t addr;1221 int rx;1222 void *rxd;1223 1224 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);1225 if (skb == NULL)1226 break;1227 1228 addr = dma_map_single(&priv->pdev->dev, skb->data,1229 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);1230 1231 rxq->rxd_count++;1232 rx = rxq->tail++;1233 if (rxq->tail == MWL8K_RX_DESCS)1234 rxq->tail = 0;1235 rxq->buf[rx].skb = skb;1236 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);1237 1238 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);1239 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);1240 1241 refilled++;1242 }1243 1244 return refilled;1245}1246 1247/* Must be called only when the card's reception is completely halted */1248static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)1249{1250 struct mwl8k_priv *priv = hw->priv;1251 struct mwl8k_rx_queue *rxq = priv->rxq + index;1252 int i;1253 1254 if (rxq->rxd == NULL)1255 return;1256 1257 for (i = 0; i < MWL8K_RX_DESCS; i++) {1258 if (rxq->buf[i].skb != NULL) {1259 dma_unmap_single(&priv->pdev->dev,1260 dma_unmap_addr(&rxq->buf[i], dma),1261 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);1262 dma_unmap_addr_set(&rxq->buf[i], dma, 0);1263 1264 kfree_skb(rxq->buf[i].skb);1265 rxq->buf[i].skb = NULL;1266 }1267 }1268 1269 kfree(rxq->buf);1270 rxq->buf = NULL;1271 1272 dma_free_coherent(&priv->pdev->dev,1273 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, rxq->rxd,1274 rxq->rxd_dma);1275 rxq->rxd = NULL;1276}1277 1278 1279/*1280 * Scan a list of BSSIDs to process for finalize join.1281 * Allows for extension to process multiple BSSIDs.1282 */1283static inline int1284mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)1285{1286 return priv->capture_beacon &&1287 ieee80211_is_beacon(wh->frame_control) &&1288 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid);1289}1290 1291static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,1292 struct sk_buff *skb)1293{1294 struct mwl8k_priv *priv = hw->priv;1295 1296 priv->capture_beacon = false;1297 eth_zero_addr(priv->capture_bssid);1298 1299 /*1300 * Use GFP_ATOMIC as rxq_process is called from1301 * the primary interrupt handler, memory allocation call1302 * must not sleep.1303 */1304 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);1305 if (priv->beacon_skb != NULL)1306 ieee80211_queue_work(hw, &priv->finalize_join_worker);1307}1308 1309static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,1310 u8 *bssid)1311{1312 struct mwl8k_vif *mwl8k_vif;1313 1314 list_for_each_entry(mwl8k_vif,1315 vif_list, list) {1316 if (memcmp(bssid, mwl8k_vif->bssid,1317 ETH_ALEN) == 0)1318 return mwl8k_vif;1319 }1320 1321 return NULL;1322}1323 1324static int rxq_process(struct ieee80211_hw *hw, int index, int limit)1325{1326 struct mwl8k_priv *priv = hw->priv;1327 struct mwl8k_vif *mwl8k_vif = NULL;1328 struct mwl8k_rx_queue *rxq = priv->rxq + index;1329 int processed;1330 1331 processed = 0;1332 while (rxq->rxd_count && limit--) {1333 struct sk_buff *skb;1334 void *rxd;1335 int pkt_len;1336 struct ieee80211_rx_status status;1337 struct ieee80211_hdr *wh;1338 __le16 qos;1339 1340 skb = rxq->buf[rxq->head].skb;1341 if (skb == NULL)1342 break;1343 1344 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);1345 1346 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,1347 &priv->noise);1348 if (pkt_len < 0)1349 break;1350 1351 rxq->buf[rxq->head].skb = NULL;1352 1353 dma_unmap_single(&priv->pdev->dev,1354 dma_unmap_addr(&rxq->buf[rxq->head], dma),1355 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);1356 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);1357 1358 rxq->head++;1359 if (rxq->head == MWL8K_RX_DESCS)1360 rxq->head = 0;1361 1362 rxq->rxd_count--;1363 1364 wh = &((struct mwl8k_dma_data *)skb->data)->wh;1365 1366 /*1367 * Check for a pending join operation. Save a1368 * copy of the beacon and schedule a tasklet to1369 * send a FINALIZE_JOIN command to the firmware.1370 */1371 if (mwl8k_capture_bssid(priv, (void *)skb->data))1372 mwl8k_save_beacon(hw, skb);1373 1374 if (ieee80211_has_protected(wh->frame_control)) {1375 1376 /* Check if hw crypto has been enabled for1377 * this bss. If yes, set the status flags1378 * accordingly1379 */1380 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,1381 wh->addr1);1382 1383 if (mwl8k_vif != NULL &&1384 mwl8k_vif->is_hw_crypto_enabled) {1385 /*1386 * When MMIC ERROR is encountered1387 * by the firmware, payload is1388 * dropped and only 32 bytes of1389 * mwl8k Firmware header is sent1390 * to the host.1391 *1392 * We need to add four bytes of1393 * key information. In it1394 * MAC80211 expects keyidx set to1395 * 0 for triggering Counter1396 * Measure of MMIC failure.1397 */1398 if (status.flag & RX_FLAG_MMIC_ERROR) {1399 struct mwl8k_dma_data *tr;1400 tr = (struct mwl8k_dma_data *)skb->data;1401 memset((void *)&(tr->data), 0, 4);1402 pkt_len += 4;1403 }1404 1405 if (!ieee80211_is_auth(wh->frame_control))1406 status.flag |= RX_FLAG_IV_STRIPPED |1407 RX_FLAG_DECRYPTED |1408 RX_FLAG_MMIC_STRIPPED;1409 }1410 }1411 1412 skb_put(skb, pkt_len);1413 mwl8k_remove_dma_header(skb, qos);1414 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));1415 ieee80211_rx_irqsafe(hw, skb);1416 1417 processed++;1418 }1419 1420 return processed;1421}1422 1423 1424/*1425 * Packet transmission.1426 */1427 1428#define MWL8K_TXD_STATUS_OK 0x000000011429#define MWL8K_TXD_STATUS_OK_RETRY 0x000000021430#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x000000041431#define MWL8K_TXD_STATUS_MULTICAST_TX 0x000000081432#define MWL8K_TXD_STATUS_FW_OWNED 0x800000001433 1434#define MWL8K_QOS_QLEN_UNSPEC 0xff001435#define MWL8K_QOS_ACK_POLICY_MASK 0x00601436#define MWL8K_QOS_ACK_POLICY_NORMAL 0x00001437#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x00601438#define MWL8K_QOS_EOSP 0x00101439 1440struct mwl8k_tx_desc {1441 __le32 status;1442 __u8 data_rate;1443 __u8 tx_priority;1444 __le16 qos_control;1445 __le32 pkt_phys_addr;1446 __le16 pkt_len;1447 __u8 dest_MAC_addr[ETH_ALEN];1448 __le32 next_txd_phys_addr;1449 __le32 timestamp;1450 __le16 rate_info;1451 __u8 peer_id;1452 __u8 tx_frag_cnt;1453} __packed;1454 1455#define MWL8K_TX_DESCS 1281456 1457static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)1458{1459 struct mwl8k_priv *priv = hw->priv;1460 struct mwl8k_tx_queue *txq = priv->txq + index;1461 int size;1462 int i;1463 1464 txq->len = 0;1465 txq->head = 0;1466 txq->tail = 0;1467 1468 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);1469 1470 txq->txd = dma_alloc_coherent(&priv->pdev->dev, size, &txq->txd_dma,1471 GFP_KERNEL);1472 if (txq->txd == NULL) {1473 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");1474 return -ENOMEM;1475 }1476 1477 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);1478 if (txq->skb == NULL) {1479 dma_free_coherent(&priv->pdev->dev, size, txq->txd,1480 txq->txd_dma);1481 txq->txd = NULL;1482 return -ENOMEM;1483 }1484 1485 for (i = 0; i < MWL8K_TX_DESCS; i++) {1486 struct mwl8k_tx_desc *tx_desc;1487 int nexti;1488 1489 tx_desc = txq->txd + i;1490 nexti = (i + 1) % MWL8K_TX_DESCS;1491 1492 tx_desc->status = 0;1493 tx_desc->next_txd_phys_addr =1494 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));1495 }1496 1497 return 0;1498}1499 1500static inline void mwl8k_tx_start(struct mwl8k_priv *priv)1501{1502 iowrite32(MWL8K_H2A_INT_PPA_READY,1503 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);1504 iowrite32(MWL8K_H2A_INT_DUMMY,1505 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);1506 ioread32(priv->regs + MWL8K_HIU_INT_CODE);1507}1508 1509static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)1510{1511 struct mwl8k_priv *priv = hw->priv;1512 int i;1513 1514 for (i = 0; i < mwl8k_tx_queues(priv); i++) {1515 struct mwl8k_tx_queue *txq = priv->txq + i;1516 int fw_owned = 0;1517 int drv_owned = 0;1518 int unused = 0;1519 int desc;1520 1521 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {1522 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;1523 u32 status;1524 1525 status = le32_to_cpu(tx_desc->status);1526 if (status & MWL8K_TXD_STATUS_FW_OWNED)1527 fw_owned++;1528 else1529 drv_owned++;1530 1531 if (tx_desc->pkt_len == 0)1532 unused++;1533 }1534 1535 wiphy_err(hw->wiphy,1536 "txq[%d] len=%d head=%d tail=%d "1537 "fw_owned=%d drv_owned=%d unused=%d\n",1538 i,1539 txq->len, txq->head, txq->tail,1540 fw_owned, drv_owned, unused);1541 }1542}1543 1544/*1545 * Must be called with priv->fw_mutex held and tx queues stopped.1546 */1547#define MWL8K_TX_WAIT_TIMEOUT_MS 50001548 1549static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)1550{1551 struct mwl8k_priv *priv = hw->priv;1552 DECLARE_COMPLETION_ONSTACK(tx_wait);1553 int retry;1554 int rc;1555 1556 might_sleep();1557 1558 /* Since fw restart is in progress, allow only the firmware1559 * commands from the restart code and block the other1560 * commands since they are going to fail in any case since1561 * the firmware has crashed1562 */1563 if (priv->hw_restart_in_progress) {1564 if (priv->hw_restart_owner == current)1565 return 0;1566 else1567 return -EBUSY;1568 }1569 1570 if (atomic_read(&priv->watchdog_event_pending))1571 return 0;1572 1573 /*1574 * The TX queues are stopped at this point, so this test1575 * doesn't need to take ->tx_lock.1576 */1577 if (!priv->pending_tx_pkts)1578 return 0;1579 1580 retry = 1;1581 rc = 0;1582 1583 spin_lock_bh(&priv->tx_lock);1584 priv->tx_wait = &tx_wait;1585 while (!rc) {1586 int oldcount;1587 unsigned long timeout;1588 1589 oldcount = priv->pending_tx_pkts;1590 1591 spin_unlock_bh(&priv->tx_lock);1592 timeout = wait_for_completion_timeout(&tx_wait,1593 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));1594 1595 if (atomic_read(&priv->watchdog_event_pending)) {1596 spin_lock_bh(&priv->tx_lock);1597 priv->tx_wait = NULL;1598 spin_unlock_bh(&priv->tx_lock);1599 return 0;1600 }1601 1602 spin_lock_bh(&priv->tx_lock);1603 1604 if (timeout || !priv->pending_tx_pkts) {1605 WARN_ON(priv->pending_tx_pkts);1606 if (retry)1607 wiphy_notice(hw->wiphy, "tx rings drained\n");1608 break;1609 }1610 1611 if (retry) {1612 mwl8k_tx_start(priv);1613 retry = 0;1614 continue;1615 }1616 1617 if (priv->pending_tx_pkts < oldcount) {1618 wiphy_notice(hw->wiphy,1619 "waiting for tx rings to drain (%d -> %d pkts)\n",1620 oldcount, priv->pending_tx_pkts);1621 retry = 1;1622 continue;1623 }1624 1625 priv->tx_wait = NULL;1626 1627 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",1628 MWL8K_TX_WAIT_TIMEOUT_MS);1629 mwl8k_dump_tx_rings(hw);1630 priv->hw_restart_in_progress = true;1631 ieee80211_queue_work(hw, &priv->fw_reload);1632 1633 rc = -ETIMEDOUT;1634 }1635 priv->tx_wait = NULL;1636 spin_unlock_bh(&priv->tx_lock);1637 1638 return rc;1639}1640 1641#define MWL8K_TXD_SUCCESS(status) \1642 ((status) & (MWL8K_TXD_STATUS_OK | \1643 MWL8K_TXD_STATUS_OK_RETRY | \1644 MWL8K_TXD_STATUS_OK_MORE_RETRY))1645 1646static int mwl8k_tid_queue_mapping(u8 tid)1647{1648 BUG_ON(tid > 7);1649 1650 switch (tid) {1651 case 0:1652 case 3:1653 return IEEE80211_AC_BE;1654 case 1:1655 case 2:1656 return IEEE80211_AC_BK;1657 case 4:1658 case 5:1659 return IEEE80211_AC_VI;1660 case 6:1661 case 7:1662 return IEEE80211_AC_VO;1663 default:1664 return -1;1665 }1666}1667 1668/* The firmware will fill in the rate information1669 * for each packet that gets queued in the hardware1670 * and these macros will interpret that info.1671 */1672 1673#define RI_FORMAT(a) (a & 0x0001)1674#define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)1675 1676static int1677mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)1678{1679 struct mwl8k_priv *priv = hw->priv;1680 struct mwl8k_tx_queue *txq = priv->txq + index;1681 int processed;1682 1683 processed = 0;1684 while (txq->len > 0 && limit--) {1685 int tx;1686 struct mwl8k_tx_desc *tx_desc;1687 unsigned long addr;1688 int size;1689 struct sk_buff *skb;1690 struct ieee80211_tx_info *info;1691 u32 status;1692 struct ieee80211_sta *sta;1693 struct mwl8k_sta *sta_info = NULL;1694 u16 rate_info;1695 struct ieee80211_hdr *wh;1696 1697 tx = txq->head;1698 tx_desc = txq->txd + tx;1699 1700 status = le32_to_cpu(tx_desc->status);1701 1702 if (status & MWL8K_TXD_STATUS_FW_OWNED) {1703 if (!force)1704 break;1705 tx_desc->status &=1706 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);1707 }1708 1709 txq->head = (tx + 1) % MWL8K_TX_DESCS;1710 BUG_ON(txq->len == 0);1711 txq->len--;1712 priv->pending_tx_pkts--;1713 1714 addr = le32_to_cpu(tx_desc->pkt_phys_addr);1715 size = le16_to_cpu(tx_desc->pkt_len);1716 skb = txq->skb[tx];1717 txq->skb[tx] = NULL;1718 1719 BUG_ON(skb == NULL);1720 dma_unmap_single(&priv->pdev->dev, addr, size, DMA_TO_DEVICE);1721 1722 mwl8k_remove_dma_header(skb, tx_desc->qos_control);1723 1724 wh = (struct ieee80211_hdr *) skb->data;1725 1726 /* Mark descriptor as unused */1727 tx_desc->pkt_phys_addr = 0;1728 tx_desc->pkt_len = 0;1729 1730 info = IEEE80211_SKB_CB(skb);1731 if (ieee80211_is_data(wh->frame_control)) {1732 rcu_read_lock();1733 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,1734 wh->addr2);1735 if (sta) {1736 sta_info = MWL8K_STA(sta);1737 BUG_ON(sta_info == NULL);1738 rate_info = le16_to_cpu(tx_desc->rate_info);1739 /* If rate is < 6.5 Mpbs for an ht station1740 * do not form an ampdu. If the station is a1741 * legacy station (format = 0), do not form an1742 * ampdu1743 */1744 if (RI_RATE_ID_MCS(rate_info) < 1 ||1745 RI_FORMAT(rate_info) == 0) {1746 sta_info->is_ampdu_allowed = false;1747 } else {1748 sta_info->is_ampdu_allowed = true;1749 }1750 }1751 rcu_read_unlock();1752 }1753 1754 ieee80211_tx_info_clear_status(info);1755 1756 /* Rate control is happening in the firmware.1757 * Ensure no tx rate is being reported.1758 */1759 info->status.rates[0].idx = -1;1760 info->status.rates[0].count = 1;1761 1762 if (MWL8K_TXD_SUCCESS(status))1763 info->flags |= IEEE80211_TX_STAT_ACK;1764 1765 ieee80211_tx_status_irqsafe(hw, skb);1766 1767 processed++;1768 }1769 1770 return processed;1771}1772 1773/* must be called only when the card's transmit is completely halted */1774static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)1775{1776 struct mwl8k_priv *priv = hw->priv;1777 struct mwl8k_tx_queue *txq = priv->txq + index;1778 1779 if (txq->txd == NULL)1780 return;1781 1782 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);1783 1784 kfree(txq->skb);1785 txq->skb = NULL;1786 1787 dma_free_coherent(&priv->pdev->dev,1788 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),1789 txq->txd, txq->txd_dma);1790 txq->txd = NULL;1791}1792 1793/* caller must hold priv->stream_lock when calling the stream functions */1794static struct mwl8k_ampdu_stream *1795mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)1796{1797 struct mwl8k_ampdu_stream *stream;1798 struct mwl8k_priv *priv = hw->priv;1799 int i;1800 1801 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {1802 stream = &priv->ampdu[i];1803 if (stream->state == AMPDU_NO_STREAM) {1804 stream->sta = sta;1805 stream->state = AMPDU_STREAM_NEW;1806 stream->tid = tid;1807 stream->idx = i;1808 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",1809 sta->addr, tid);1810 return stream;1811 }1812 }1813 return NULL;1814}1815 1816static int1817mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)1818{1819 int ret;1820 1821 /* if the stream has already been started, don't start it again */1822 if (stream->state != AMPDU_STREAM_NEW)1823 return 0;1824 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);1825 if (ret)1826 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "1827 "%d\n", stream->sta->addr, stream->tid, ret);1828 else1829 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",1830 stream->sta->addr, stream->tid);1831 return ret;1832}1833 1834static void1835mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)1836{1837 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,1838 stream->tid);1839 memset(stream, 0, sizeof(*stream));1840}1841 1842static struct mwl8k_ampdu_stream *1843mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)1844{1845 struct mwl8k_priv *priv = hw->priv;1846 int i;1847 1848 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {1849 struct mwl8k_ampdu_stream *stream;1850 stream = &priv->ampdu[i];1851 if (stream->state == AMPDU_NO_STREAM)1852 continue;1853 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&1854 stream->tid == tid)1855 return stream;1856 }1857 return NULL;1858}1859 1860#define MWL8K_AMPDU_PACKET_THRESHOLD 641861static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)1862{1863 struct mwl8k_sta *sta_info = MWL8K_STA(sta);1864 struct tx_traffic_info *tx_stats;1865 1866 BUG_ON(tid >= MWL8K_MAX_TID);1867 tx_stats = &sta_info->tx_stats[tid];1868 1869 return sta_info->is_ampdu_allowed &&1870 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;1871}1872 1873static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)1874{1875 struct mwl8k_sta *sta_info = MWL8K_STA(sta);1876 struct tx_traffic_info *tx_stats;1877 1878 BUG_ON(tid >= MWL8K_MAX_TID);1879 tx_stats = &sta_info->tx_stats[tid];1880 1881 if (tx_stats->start_time == 0)1882 tx_stats->start_time = jiffies;1883 1884 /* reset the packet count after each second elapses. If the number of1885 * packets ever exceeds the ampdu_min_traffic threshold, we will allow1886 * an ampdu stream to be started.1887 */1888 if (time_after(jiffies, (unsigned long)tx_stats->start_time + HZ)) {1889 tx_stats->pkts = 0;1890 tx_stats->start_time = 0;1891 } else1892 tx_stats->pkts++;1893}1894 1895/* The hardware ampdu queues start from 5.1896 * txpriorities for ampdu queues are1897 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest1898 * and queue 3 is lowest (queue 4 is reserved)1899 */1900#define BA_QUEUE 51901 1902static void1903mwl8k_txq_xmit(struct ieee80211_hw *hw,1904 int index,1905 struct ieee80211_sta *sta,1906 struct sk_buff *skb)1907{1908 struct mwl8k_priv *priv = hw->priv;1909 struct ieee80211_tx_info *tx_info;1910 struct mwl8k_vif *mwl8k_vif;1911 struct ieee80211_hdr *wh;1912 struct mwl8k_tx_queue *txq;1913 struct mwl8k_tx_desc *tx;1914 dma_addr_t dma;1915 u32 txstatus;1916 u8 txdatarate;1917 u16 qos;1918 int txpriority;1919 u8 tid = 0;1920 struct mwl8k_ampdu_stream *stream = NULL;1921 bool start_ba_session = false;1922 bool mgmtframe = false;1923 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;1924 bool eapol_frame = false;1925 1926 wh = (struct ieee80211_hdr *)skb->data;1927 if (ieee80211_is_data_qos(wh->frame_control))1928 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));1929 else1930 qos = 0;1931 1932 if (skb->protocol == cpu_to_be16(ETH_P_PAE))1933 eapol_frame = true;1934 1935 if (ieee80211_is_mgmt(wh->frame_control))1936 mgmtframe = true;1937 1938 if (priv->ap_fw)1939 mwl8k_encapsulate_tx_frame(priv, skb);1940 else1941 mwl8k_add_dma_header(priv, skb, 0, 0);1942 1943 wh = &((struct mwl8k_dma_data *)skb->data)->wh;1944 1945 tx_info = IEEE80211_SKB_CB(skb);1946 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);1947 1948 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {1949 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);1950 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);1951 mwl8k_vif->seqno += 0x10;1952 }1953 1954 /* Setup firmware control bit fields for each frame type. */1955 txstatus = 0;1956 txdatarate = 0;1957 if (ieee80211_is_mgmt(wh->frame_control) ||1958 ieee80211_is_ctl(wh->frame_control)) {1959 txdatarate = 0;1960 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;1961 } else if (ieee80211_is_data(wh->frame_control)) {1962 txdatarate = 1;1963 if (is_multicast_ether_addr(wh->addr1))1964 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;1965 1966 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;1967 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)1968 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;1969 else1970 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;1971 }1972 1973 /* Queue ADDBA request in the respective data queue. While setting up1974 * the ampdu stream, mac80211 queues further packets for that1975 * particular ra/tid pair. However, packets piled up in the hardware1976 * for that ra/tid pair will still go out. ADDBA request and the1977 * related data packets going out from different queues asynchronously1978 * will cause a shift in the receiver window which might result in1979 * ampdu packets getting dropped at the receiver after the stream has1980 * been setup.1981 */1982 if (unlikely(ieee80211_is_action(wh->frame_control) &&1983 mgmt->u.action.category == WLAN_CATEGORY_BACK &&1984 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&1985 priv->ap_fw)) {1986 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);1987 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;1988 index = mwl8k_tid_queue_mapping(tid);1989 }1990 1991 txpriority = index;1992 1993 if (priv->ap_fw && sta && sta->deflink.ht_cap.ht_supported && !eapol_frame &&1994 ieee80211_is_data_qos(wh->frame_control)) {1995 tid = qos & 0xf;1996 mwl8k_tx_count_packet(sta, tid);1997 spin_lock(&priv->stream_lock);1998 stream = mwl8k_lookup_stream(hw, sta->addr, tid);1999 if (stream != NULL) {2000 if (stream->state == AMPDU_STREAM_ACTIVE) {2001 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));2002 txpriority = (BA_QUEUE + stream->idx) %2003 TOTAL_HW_TX_QUEUES;2004 if (stream->idx <= 1)2005 index = stream->idx +2006 MWL8K_TX_WMM_QUEUES;2007 2008 } else if (stream->state == AMPDU_STREAM_NEW) {2009 /* We get here if the driver sends us packets2010 * after we've initiated a stream, but before2011 * our ampdu_action routine has been called2012 * with IEEE80211_AMPDU_TX_START to get the SSN2013 * for the ADDBA request. So this packet can2014 * go out with no risk of sequence number2015 * mismatch. No special handling is required.2016 */2017 } else {2018 /* Drop packets that would go out after the2019 * ADDBA request was sent but before the ADDBA2020 * response is received. If we don't do this,2021 * the recipient would probably receive it2022 * after the ADDBA request with SSN 0. This2023 * will cause the recipient's BA receive window2024 * to shift, which would cause the subsequent2025 * packets in the BA stream to be discarded.2026 * mac80211 queues our packets for us in this2027 * case, so this is really just a safety check.2028 */2029 wiphy_warn(hw->wiphy,2030 "Cannot send packet while ADDBA "2031 "dialog is underway.\n");2032 spin_unlock(&priv->stream_lock);2033 dev_kfree_skb(skb);2034 return;2035 }2036 } else {2037 /* Defer calling mwl8k_start_stream so that the current2038 * skb can go out before the ADDBA request. This2039 * prevents sequence number mismatch at the recepient2040 * as described above.2041 */2042 if (mwl8k_ampdu_allowed(sta, tid)) {2043 stream = mwl8k_add_stream(hw, sta, tid);2044 if (stream != NULL)2045 start_ba_session = true;2046 }2047 }2048 spin_unlock(&priv->stream_lock);2049 } else {2050 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;2051 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;2052 }2053 2054 dma = dma_map_single(&priv->pdev->dev, skb->data, skb->len,2055 DMA_TO_DEVICE);2056 2057 if (dma_mapping_error(&priv->pdev->dev, dma)) {2058 wiphy_debug(hw->wiphy,2059 "failed to dma map skb, dropping TX frame.\n");2060 if (start_ba_session) {2061 spin_lock(&priv->stream_lock);2062 mwl8k_remove_stream(hw, stream);2063 spin_unlock(&priv->stream_lock);2064 }2065 dev_kfree_skb(skb);2066 return;2067 }2068 2069 spin_lock_bh(&priv->tx_lock);2070 2071 txq = priv->txq + index;2072 2073 /* Mgmt frames that go out frequently are probe2074 * responses. Other mgmt frames got out relatively2075 * infrequently. Hence reserve 2 buffers so that2076 * other mgmt frames do not get dropped due to an2077 * already queued probe response in one of the2078 * reserved buffers.2079 */2080 2081 if (txq->len >= MWL8K_TX_DESCS - 2) {2082 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {2083 if (start_ba_session) {2084 spin_lock(&priv->stream_lock);2085 mwl8k_remove_stream(hw, stream);2086 spin_unlock(&priv->stream_lock);2087 }2088 mwl8k_tx_start(priv);2089 spin_unlock_bh(&priv->tx_lock);2090 dma_unmap_single(&priv->pdev->dev, dma, skb->len,2091 DMA_TO_DEVICE);2092 dev_kfree_skb(skb);2093 return;2094 }2095 }2096 2097 BUG_ON(txq->skb[txq->tail] != NULL);2098 txq->skb[txq->tail] = skb;2099 2100 tx = txq->txd + txq->tail;2101 tx->data_rate = txdatarate;2102 tx->tx_priority = txpriority;2103 tx->qos_control = cpu_to_le16(qos);2104 tx->pkt_phys_addr = cpu_to_le32(dma);2105 tx->pkt_len = cpu_to_le16(skb->len);2106 tx->rate_info = 0;2107 if (!priv->ap_fw && sta != NULL)2108 tx->peer_id = MWL8K_STA(sta)->peer_id;2109 else2110 tx->peer_id = 0;2111 2112 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)2113 tx->timestamp = cpu_to_le32(ioread32(priv->regs +2114 MWL8K_HW_TIMER_REGISTER));2115 else2116 tx->timestamp = 0;2117 2118 wmb();2119 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);2120 2121 txq->len++;2122 priv->pending_tx_pkts++;2123 2124 txq->tail++;2125 if (txq->tail == MWL8K_TX_DESCS)2126 txq->tail = 0;2127 2128 mwl8k_tx_start(priv);2129 2130 spin_unlock_bh(&priv->tx_lock);2131 2132 /* Initiate the ampdu session here */2133 if (start_ba_session) {2134 spin_lock(&priv->stream_lock);2135 if (mwl8k_start_stream(hw, stream))2136 mwl8k_remove_stream(hw, stream);2137 spin_unlock(&priv->stream_lock);2138 }2139}2140 2141 2142/*2143 * Firmware access.2144 *2145 * We have the following requirements for issuing firmware commands:2146 * - Some commands require that the packet transmit path is idle when2147 * the command is issued. (For simplicity, we'll just quiesce the2148 * transmit path for every command.)2149 * - There are certain sequences of commands that need to be issued to2150 * the hardware sequentially, with no other intervening commands.2151 *2152 * This leads to an implementation of a "firmware lock" as a mutex that2153 * can be taken recursively, and which is taken by both the low-level2154 * command submission function (mwl8k_post_cmd) as well as any users of2155 * that function that require issuing of an atomic sequence of commands,2156 * and quiesces the transmit path whenever it's taken.2157 */2158static int mwl8k_fw_lock(struct ieee80211_hw *hw)2159{2160 struct mwl8k_priv *priv = hw->priv;2161 2162 if (priv->fw_mutex_owner != current) {2163 int rc;2164 2165 mutex_lock(&priv->fw_mutex);2166 ieee80211_stop_queues(hw);2167 2168 rc = mwl8k_tx_wait_empty(hw);2169 if (rc) {2170 if (!priv->hw_restart_in_progress)2171 ieee80211_wake_queues(hw);2172 2173 mutex_unlock(&priv->fw_mutex);2174 2175 return rc;2176 }2177 2178 priv->fw_mutex_owner = current;2179 }2180 2181 priv->fw_mutex_depth++;2182 2183 return 0;2184}2185 2186static void mwl8k_fw_unlock(struct ieee80211_hw *hw)2187{2188 struct mwl8k_priv *priv = hw->priv;2189 2190 if (!--priv->fw_mutex_depth) {2191 if (!priv->hw_restart_in_progress)2192 ieee80211_wake_queues(hw);2193 2194 priv->fw_mutex_owner = NULL;2195 mutex_unlock(&priv->fw_mutex);2196 }2197}2198 2199static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,2200 u32 bitmap);2201 2202/*2203 * Command processing.2204 */2205 2206/* Timeout firmware commands after 10s */2207#define MWL8K_CMD_TIMEOUT_MS 100002208 2209static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt_hdr *cmd)2210{2211 DECLARE_COMPLETION_ONSTACK(cmd_wait);2212 struct mwl8k_priv *priv = hw->priv;2213 void __iomem *regs = priv->regs;2214 dma_addr_t dma_addr;2215 unsigned int dma_size;2216 int rc;2217 unsigned long time_left = 0;2218 u8 buf[32];2219 u32 bitmap = 0;2220 2221 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",2222 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);2223 2224 /* Before posting firmware commands that could change the hardware2225 * characteristics, make sure that all BSSes are stopped temporary.2226 * Enable these stopped BSSes after completion of the commands2227 */2228 2229 rc = mwl8k_fw_lock(hw);2230 if (rc)2231 return rc;2232 2233 if (priv->ap_fw && priv->running_bsses) {2234 switch (le16_to_cpu(cmd->code)) {2235 case MWL8K_CMD_SET_RF_CHANNEL:2236 case MWL8K_CMD_RADIO_CONTROL:2237 case MWL8K_CMD_RF_TX_POWER:2238 case MWL8K_CMD_TX_POWER:2239 case MWL8K_CMD_RF_ANTENNA:2240 case MWL8K_CMD_RTS_THRESHOLD:2241 case MWL8K_CMD_MIMO_CONFIG:2242 bitmap = priv->running_bsses;2243 mwl8k_enable_bsses(hw, false, bitmap);2244 break;2245 }2246 }2247 2248 cmd->result = (__force __le16) 0xffff;2249 dma_size = le16_to_cpu(cmd->length);2250 dma_addr = dma_map_single(&priv->pdev->dev, cmd, dma_size,2251 DMA_BIDIRECTIONAL);2252 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) {2253 rc = -ENOMEM;2254 goto exit;2255 }2256 2257 priv->hostcmd_wait = &cmd_wait;2258 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);2259 iowrite32(MWL8K_H2A_INT_DOORBELL,2260 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);2261 iowrite32(MWL8K_H2A_INT_DUMMY,2262 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);2263 2264 time_left = wait_for_completion_timeout(&cmd_wait,2265 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));2266 2267 priv->hostcmd_wait = NULL;2268 2269 2270 dma_unmap_single(&priv->pdev->dev, dma_addr, dma_size,2271 DMA_BIDIRECTIONAL);2272 2273 if (!time_left) {2274 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",2275 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),2276 MWL8K_CMD_TIMEOUT_MS);2277 rc = -ETIMEDOUT;2278 } else {2279 int ms;2280 2281 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(time_left);2282 2283 rc = cmd->result ? -EINVAL : 0;2284 if (rc)2285 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",2286 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),2287 le16_to_cpu(cmd->result));2288 else if (ms > 2000)2289 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",2290 mwl8k_cmd_name(cmd->code,2291 buf, sizeof(buf)),2292 ms);2293 }2294 2295exit:2296 if (bitmap)2297 mwl8k_enable_bsses(hw, true, bitmap);2298 2299 mwl8k_fw_unlock(hw);2300 2301 return rc;2302}2303 2304static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,2305 struct ieee80211_vif *vif,2306 struct mwl8k_cmd_pkt_hdr *cmd)2307{2308 if (vif != NULL)2309 cmd->macid = MWL8K_VIF(vif)->macid;2310 return mwl8k_post_cmd(hw, cmd);2311}2312 2313/*2314 * Setup code shared between STA and AP firmware images.2315 */2316static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)2317{2318 struct mwl8k_priv *priv = hw->priv;2319 2320 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));2321 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));2322 2323 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));2324 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));2325 2326 priv->band_24.band = NL80211_BAND_2GHZ;2327 priv->band_24.channels = priv->channels_24;2328 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);2329 priv->band_24.bitrates = priv->rates_24;2330 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);2331 2332 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24;2333}2334 2335static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)2336{2337 struct mwl8k_priv *priv = hw->priv;2338 2339 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));2340 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));2341 2342 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));2343 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));2344 2345 priv->band_50.band = NL80211_BAND_5GHZ;2346 priv->band_50.channels = priv->channels_50;2347 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);2348 priv->band_50.bitrates = priv->rates_50;2349 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);2350 2351 hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50;2352}2353 2354/*2355 * CMD_GET_HW_SPEC (STA version).2356 */2357struct mwl8k_cmd_get_hw_spec_sta {2358 struct mwl8k_cmd_pkt_hdr header;2359 __u8 hw_rev;2360 __u8 host_interface;2361 __le16 num_mcaddrs;2362 __u8 perm_addr[ETH_ALEN];2363 __le16 region_code;2364 __le32 fw_rev;2365 __le32 ps_cookie;2366 __le32 caps;2367 __u8 mcs_bitmap[16];2368 __le32 rx_queue_ptr;2369 __le32 num_tx_queues;2370 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];2371 __le32 caps2;2372 __le32 num_tx_desc_per_queue;2373 __le32 total_rxd;2374} __packed;2375 2376#define MWL8K_CAP_MAX_AMSDU 0x200000002377#define MWL8K_CAP_GREENFIELD 0x080000002378#define MWL8K_CAP_AMPDU 0x040000002379#define MWL8K_CAP_RX_STBC 0x010000002380#define MWL8K_CAP_TX_STBC 0x008000002381#define MWL8K_CAP_SHORTGI_40MHZ 0x004000002382#define MWL8K_CAP_SHORTGI_20MHZ 0x002000002383#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e00002384#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c0002385#define MWL8K_CAP_DELAY_BA 0x000030002386#define MWL8K_CAP_MIMO 0x000002002387#define MWL8K_CAP_40MHZ 0x000001002388#define MWL8K_CAP_BAND_MASK 0x000000072389#define MWL8K_CAP_5GHZ 0x000000042390#define MWL8K_CAP_2GHZ4 0x000000012391 2392static void2393mwl8k_set_ht_caps(struct ieee80211_hw *hw,2394 struct ieee80211_supported_band *band, u32 cap)2395{2396 int rx_streams;2397 int tx_streams;2398 2399 band->ht_cap.ht_supported = 1;2400 2401 if (cap & MWL8K_CAP_MAX_AMSDU)2402 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;2403 if (cap & MWL8K_CAP_GREENFIELD)2404 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;2405 if (cap & MWL8K_CAP_AMPDU) {2406 ieee80211_hw_set(hw, AMPDU_AGGREGATION);2407 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;2408 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;2409 }2410 if (cap & MWL8K_CAP_RX_STBC)2411 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;2412 if (cap & MWL8K_CAP_TX_STBC)2413 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;2414 if (cap & MWL8K_CAP_SHORTGI_40MHZ)2415 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;2416 if (cap & MWL8K_CAP_SHORTGI_20MHZ)2417 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;2418 if (cap & MWL8K_CAP_DELAY_BA)2419 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;2420 if (cap & MWL8K_CAP_40MHZ)2421 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;2422 2423 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);2424 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);2425 2426 band->ht_cap.mcs.rx_mask[0] = 0xff;2427 if (rx_streams >= 2)2428 band->ht_cap.mcs.rx_mask[1] = 0xff;2429 if (rx_streams >= 3)2430 band->ht_cap.mcs.rx_mask[2] = 0xff;2431 band->ht_cap.mcs.rx_mask[4] = 0x01;2432 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;2433 2434 if (rx_streams != tx_streams) {2435 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;2436 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<2437 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;2438 }2439}2440 2441static void2442mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)2443{2444 struct mwl8k_priv *priv = hw->priv;2445 2446 if (priv->caps)2447 return;2448 2449 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {2450 mwl8k_setup_2ghz_band(hw);2451 if (caps & MWL8K_CAP_MIMO)2452 mwl8k_set_ht_caps(hw, &priv->band_24, caps);2453 }2454 2455 if (caps & MWL8K_CAP_5GHZ) {2456 mwl8k_setup_5ghz_band(hw);2457 if (caps & MWL8K_CAP_MIMO)2458 mwl8k_set_ht_caps(hw, &priv->band_50, caps);2459 }2460 2461 priv->caps = caps;2462}2463 2464static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)2465{2466 struct mwl8k_priv *priv = hw->priv;2467 struct mwl8k_cmd_get_hw_spec_sta *cmd;2468 int rc;2469 int i;2470 2471 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);2472 if (cmd == NULL)2473 return -ENOMEM;2474 2475 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);2476 cmd->header.length = cpu_to_le16(sizeof(*cmd));2477 2478 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));2479 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);2480 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);2481 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));2482 for (i = 0; i < mwl8k_tx_queues(priv); i++)2483 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);2484 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);2485 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);2486 2487 rc = mwl8k_post_cmd(hw, &cmd->header);2488 2489 if (!rc) {2490 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);2491 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);2492 priv->fw_rev = le32_to_cpu(cmd->fw_rev);2493 priv->hw_rev = cmd->hw_rev;2494 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));2495 priv->ap_macids_supported = 0x00000000;2496 priv->sta_macids_supported = 0x00000001;2497 }2498 2499 kfree(cmd);2500 return rc;2501}2502 2503/*2504 * CMD_GET_HW_SPEC (AP version).2505 */2506struct mwl8k_cmd_get_hw_spec_ap {2507 struct mwl8k_cmd_pkt_hdr header;2508 __u8 hw_rev;2509 __u8 host_interface;2510 __le16 num_wcb;2511 __le16 num_mcaddrs;2512 __u8 perm_addr[ETH_ALEN];2513 __le16 region_code;2514 __le16 num_antenna;2515 __le32 fw_rev;2516 __le32 wcbbase0;2517 __le32 rxwrptr;2518 __le32 rxrdptr;2519 __le32 ps_cookie;2520 __le32 wcbbase1;2521 __le32 wcbbase2;2522 __le32 wcbbase3;2523 __le32 fw_api_version;2524 __le32 caps;2525 __le32 num_of_ampdu_queues;2526 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];2527} __packed;2528 2529static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)2530{2531 struct mwl8k_priv *priv = hw->priv;2532 struct mwl8k_cmd_get_hw_spec_ap *cmd;2533 int rc, i;2534 u32 api_version;2535 2536 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);2537 if (cmd == NULL)2538 return -ENOMEM;2539 2540 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);2541 cmd->header.length = cpu_to_le16(sizeof(*cmd));2542 2543 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));2544 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);2545 2546 rc = mwl8k_post_cmd(hw, &cmd->header);2547 2548 if (!rc) {2549 int off;2550 2551 api_version = le32_to_cpu(cmd->fw_api_version);2552 if (priv->device_info->fw_api_ap != api_version) {2553 printk(KERN_ERR "%s: Unsupported fw API version for %s."2554 " Expected %d got %d.\n", MWL8K_NAME,2555 priv->device_info->part_name,2556 priv->device_info->fw_api_ap,2557 api_version);2558 rc = -EINVAL;2559 goto done;2560 }2561 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);2562 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);2563 priv->fw_rev = le32_to_cpu(cmd->fw_rev);2564 priv->hw_rev = cmd->hw_rev;2565 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));2566 priv->ap_macids_supported = 0x000000ff;2567 priv->sta_macids_supported = 0x00000100;2568 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);2569 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {2570 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"2571 " but we only support %d.\n",2572 priv->num_ampdu_queues,2573 MWL8K_MAX_AMPDU_QUEUES);2574 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;2575 }2576 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;2577 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);2578 2579 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;2580 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);2581 2582 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;2583 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;2584 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;2585 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;2586 2587 for (i = 0; i < priv->num_ampdu_queues; i++)2588 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =2589 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;2590 }2591 2592done:2593 kfree(cmd);2594 return rc;2595}2596 2597/*2598 * CMD_SET_HW_SPEC.2599 */2600struct mwl8k_cmd_set_hw_spec {2601 struct mwl8k_cmd_pkt_hdr header;2602 __u8 hw_rev;2603 __u8 host_interface;2604 __le16 num_mcaddrs;2605 __u8 perm_addr[ETH_ALEN];2606 __le16 region_code;2607 __le32 fw_rev;2608 __le32 ps_cookie;2609 __le32 caps;2610 __le32 rx_queue_ptr;2611 __le32 num_tx_queues;2612 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];2613 __le32 flags;2614 __le32 num_tx_desc_per_queue;2615 __le32 total_rxd;2616} __packed;2617 2618/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause2619 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,2620 * the packets that are queued for more than 500ms, will be dropped in the2621 * hardware. This helps minimizing the issues caused due to head-of-line2622 * blocking where a slow client can hog the bandwidth and affect traffic to a2623 * faster client.2624 */2625#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x000004002626#define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x000002002627#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x000000802628#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x000000202629#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x000000102630 2631static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)2632{2633 struct mwl8k_priv *priv = hw->priv;2634 struct mwl8k_cmd_set_hw_spec *cmd;2635 int rc;2636 int i;2637 2638 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);2639 if (cmd == NULL)2640 return -ENOMEM;2641 2642 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);2643 cmd->header.length = cpu_to_le16(sizeof(*cmd));2644 2645 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);2646 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);2647 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));2648 2649 /*2650 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in2651 * that order. Firmware has Q3 as highest priority and Q0 as lowest2652 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the2653 * priority is interpreted the right way in firmware.2654 */2655 for (i = 0; i < mwl8k_tx_queues(priv); i++) {2656 int j = mwl8k_tx_queues(priv) - 1 - i;2657 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);2658 }2659 2660 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |2661 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |2662 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |2663 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |2664 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);2665 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);2666 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);2667 2668 rc = mwl8k_post_cmd(hw, &cmd->header);2669 kfree(cmd);2670 2671 return rc;2672}2673 2674/*2675 * CMD_MAC_MULTICAST_ADR.2676 */2677struct mwl8k_cmd_mac_multicast_adr {2678 struct mwl8k_cmd_pkt_hdr header;2679 __le16 action;2680 __le16 numaddr;2681 __u8 addr[][ETH_ALEN];2682};2683 2684#define MWL8K_ENABLE_RX_DIRECTED 0x00012685#define MWL8K_ENABLE_RX_MULTICAST 0x00022686#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x00042687#define MWL8K_ENABLE_RX_BROADCAST 0x00082688 2689static struct mwl8k_cmd_pkt_hdr *2690__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,2691 struct netdev_hw_addr_list *mc_list)2692{2693 struct mwl8k_priv *priv = hw->priv;2694 struct mwl8k_cmd_mac_multicast_adr *cmd;2695 int size;2696 int mc_count = 0;2697 2698 if (mc_list)2699 mc_count = netdev_hw_addr_list_count(mc_list);2700 2701 if (allmulti || mc_count > priv->num_mcaddrs) {2702 allmulti = 1;2703 mc_count = 0;2704 }2705 2706 size = sizeof(*cmd) + mc_count * ETH_ALEN;2707 2708 cmd = kzalloc(size, GFP_ATOMIC);2709 if (cmd == NULL)2710 return NULL;2711 2712 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);2713 cmd->header.length = cpu_to_le16(size);2714 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |2715 MWL8K_ENABLE_RX_BROADCAST);2716 2717 if (allmulti) {2718 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);2719 } else if (mc_count) {2720 struct netdev_hw_addr *ha;2721 int i = 0;2722 2723 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);2724 cmd->numaddr = cpu_to_le16(mc_count);2725 netdev_hw_addr_list_for_each(ha, mc_list) {2726 memcpy(cmd->addr[i++], ha->addr, ETH_ALEN);2727 }2728 }2729 2730 return &cmd->header;2731}2732 2733/*2734 * CMD_GET_STAT.2735 */2736struct mwl8k_cmd_get_stat {2737 struct mwl8k_cmd_pkt_hdr header;2738 __le32 stats[64];2739} __packed;2740 2741#define MWL8K_STAT_ACK_FAILURE 92742#define MWL8K_STAT_RTS_FAILURE 122743#define MWL8K_STAT_FCS_ERROR 242744#define MWL8K_STAT_RTS_SUCCESS 112745 2746static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,2747 struct ieee80211_low_level_stats *stats)2748{2749 struct mwl8k_cmd_get_stat *cmd;2750 int rc;2751 2752 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);2753 if (cmd == NULL)2754 return -ENOMEM;2755 2756 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);2757 cmd->header.length = cpu_to_le16(sizeof(*cmd));2758 2759 rc = mwl8k_post_cmd(hw, &cmd->header);2760 if (!rc) {2761 stats->dot11ACKFailureCount =2762 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);2763 stats->dot11RTSFailureCount =2764 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);2765 stats->dot11FCSErrorCount =2766 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);2767 stats->dot11RTSSuccessCount =2768 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);2769 }2770 kfree(cmd);2771 2772 return rc;2773}2774 2775/*2776 * CMD_RADIO_CONTROL.2777 */2778struct mwl8k_cmd_radio_control {2779 struct mwl8k_cmd_pkt_hdr header;2780 __le16 action;2781 __le16 control;2782 __le16 radio_on;2783} __packed;2784 2785static int2786mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)2787{2788 struct mwl8k_priv *priv = hw->priv;2789 struct mwl8k_cmd_radio_control *cmd;2790 int rc;2791 2792 if (enable == priv->radio_on && !force)2793 return 0;2794 2795 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);2796 if (cmd == NULL)2797 return -ENOMEM;2798 2799 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);2800 cmd->header.length = cpu_to_le16(sizeof(*cmd));2801 cmd->action = cpu_to_le16(MWL8K_CMD_SET);2802 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);2803 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);2804 2805 rc = mwl8k_post_cmd(hw, &cmd->header);2806 kfree(cmd);2807 2808 if (!rc)2809 priv->radio_on = enable;2810 2811 return rc;2812}2813 2814static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)2815{2816 return mwl8k_cmd_radio_control(hw, 0, 0);2817}2818 2819static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)2820{2821 return mwl8k_cmd_radio_control(hw, 1, 0);2822}2823 2824static int2825mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)2826{2827 struct mwl8k_priv *priv = hw->priv;2828 2829 priv->radio_short_preamble = short_preamble;2830 2831 return mwl8k_cmd_radio_control(hw, 1, 1);2832}2833 2834/*2835 * CMD_RF_TX_POWER.2836 */2837#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 82838 2839struct mwl8k_cmd_rf_tx_power {2840 struct mwl8k_cmd_pkt_hdr header;2841 __le16 action;2842 __le16 support_level;2843 __le16 current_level;2844 __le16 reserved;2845 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];2846} __packed;2847 2848static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)2849{2850 struct mwl8k_cmd_rf_tx_power *cmd;2851 int rc;2852 2853 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);2854 if (cmd == NULL)2855 return -ENOMEM;2856 2857 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);2858 cmd->header.length = cpu_to_le16(sizeof(*cmd));2859 cmd->action = cpu_to_le16(MWL8K_CMD_SET);2860 cmd->support_level = cpu_to_le16(dBm);2861 2862 rc = mwl8k_post_cmd(hw, &cmd->header);2863 kfree(cmd);2864 2865 return rc;2866}2867 2868/*2869 * CMD_TX_POWER.2870 */2871#define MWL8K_TX_POWER_LEVEL_TOTAL 122872 2873struct mwl8k_cmd_tx_power {2874 struct mwl8k_cmd_pkt_hdr header;2875 __le16 action;2876 __le16 band;2877 __le16 channel;2878 __le16 bw;2879 __le16 sub_ch;2880 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];2881} __packed;2882 2883static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,2884 struct ieee80211_conf *conf,2885 unsigned short pwr)2886{2887 struct ieee80211_channel *channel = conf->chandef.chan;2888 enum nl80211_channel_type channel_type =2889 cfg80211_get_chandef_type(&conf->chandef);2890 struct mwl8k_cmd_tx_power *cmd;2891 int rc;2892 int i;2893 2894 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);2895 if (cmd == NULL)2896 return -ENOMEM;2897 2898 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);2899 cmd->header.length = cpu_to_le16(sizeof(*cmd));2900 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);2901 2902 if (channel->band == NL80211_BAND_2GHZ)2903 cmd->band = cpu_to_le16(0x1);2904 else if (channel->band == NL80211_BAND_5GHZ)2905 cmd->band = cpu_to_le16(0x4);2906 2907 cmd->channel = cpu_to_le16(channel->hw_value);2908 2909 if (channel_type == NL80211_CHAN_NO_HT ||2910 channel_type == NL80211_CHAN_HT20) {2911 cmd->bw = cpu_to_le16(0x2);2912 } else {2913 cmd->bw = cpu_to_le16(0x4);2914 if (channel_type == NL80211_CHAN_HT40MINUS)2915 cmd->sub_ch = cpu_to_le16(0x3);2916 else if (channel_type == NL80211_CHAN_HT40PLUS)2917 cmd->sub_ch = cpu_to_le16(0x1);2918 }2919 2920 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)2921 cmd->power_level_list[i] = cpu_to_le16(pwr);2922 2923 rc = mwl8k_post_cmd(hw, &cmd->header);2924 kfree(cmd);2925 2926 return rc;2927}2928 2929/*2930 * CMD_RF_ANTENNA.2931 */2932struct mwl8k_cmd_rf_antenna {2933 struct mwl8k_cmd_pkt_hdr header;2934 __le16 antenna;2935 __le16 mode;2936} __packed;2937 2938#define MWL8K_RF_ANTENNA_RX 12939#define MWL8K_RF_ANTENNA_TX 22940 2941static int2942mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)2943{2944 struct mwl8k_cmd_rf_antenna *cmd;2945 int rc;2946 2947 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);2948 if (cmd == NULL)2949 return -ENOMEM;2950 2951 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);2952 cmd->header.length = cpu_to_le16(sizeof(*cmd));2953 cmd->antenna = cpu_to_le16(antenna);2954 cmd->mode = cpu_to_le16(mask);2955 2956 rc = mwl8k_post_cmd(hw, &cmd->header);2957 kfree(cmd);2958 2959 return rc;2960}2961 2962/*2963 * CMD_SET_BEACON.2964 */2965struct mwl8k_cmd_set_beacon {2966 struct mwl8k_cmd_pkt_hdr header;2967 __le16 beacon_len;2968 __u8 beacon[];2969};2970 2971static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,2972 struct ieee80211_vif *vif, u8 *beacon, int len)2973{2974 struct mwl8k_cmd_set_beacon *cmd;2975 int rc;2976 2977 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);2978 if (cmd == NULL)2979 return -ENOMEM;2980 2981 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);2982 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);2983 cmd->beacon_len = cpu_to_le16(len);2984 memcpy(cmd->beacon, beacon, len);2985 2986 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);2987 kfree(cmd);2988 2989 return rc;2990}2991 2992/*2993 * CMD_SET_PRE_SCAN.2994 */2995struct mwl8k_cmd_set_pre_scan {2996 struct mwl8k_cmd_pkt_hdr header;2997} __packed;2998 2999static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)3000{3001 struct mwl8k_cmd_set_pre_scan *cmd;3002 int rc;3003 3004 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3005 if (cmd == NULL)3006 return -ENOMEM;3007 3008 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);3009 cmd->header.length = cpu_to_le16(sizeof(*cmd));3010 3011 rc = mwl8k_post_cmd(hw, &cmd->header);3012 kfree(cmd);3013 3014 return rc;3015}3016 3017/*3018 * CMD_BBP_REG_ACCESS.3019 */3020struct mwl8k_cmd_bbp_reg_access {3021 struct mwl8k_cmd_pkt_hdr header;3022 __le16 action;3023 __le16 offset;3024 u8 value;3025 u8 rsrv[3];3026} __packed;3027 3028static int3029mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw,3030 u16 action,3031 u16 offset,3032 u8 *value)3033{3034 struct mwl8k_cmd_bbp_reg_access *cmd;3035 int rc;3036 3037 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3038 if (cmd == NULL)3039 return -ENOMEM;3040 3041 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS);3042 cmd->header.length = cpu_to_le16(sizeof(*cmd));3043 cmd->action = cpu_to_le16(action);3044 cmd->offset = cpu_to_le16(offset);3045 3046 rc = mwl8k_post_cmd(hw, &cmd->header);3047 3048 if (!rc)3049 *value = cmd->value;3050 else3051 *value = 0;3052 3053 kfree(cmd);3054 3055 return rc;3056}3057 3058/*3059 * CMD_SET_POST_SCAN.3060 */3061struct mwl8k_cmd_set_post_scan {3062 struct mwl8k_cmd_pkt_hdr header;3063 __le32 isibss;3064 __u8 bssid[ETH_ALEN];3065} __packed;3066 3067static int3068mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)3069{3070 struct mwl8k_cmd_set_post_scan *cmd;3071 int rc;3072 3073 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3074 if (cmd == NULL)3075 return -ENOMEM;3076 3077 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);3078 cmd->header.length = cpu_to_le16(sizeof(*cmd));3079 cmd->isibss = 0;3080 memcpy(cmd->bssid, mac, ETH_ALEN);3081 3082 rc = mwl8k_post_cmd(hw, &cmd->header);3083 kfree(cmd);3084 3085 return rc;3086}3087 3088static int freq_to_idx(struct mwl8k_priv *priv, int freq)3089{3090 struct ieee80211_supported_band *sband;3091 int band, ch, idx = 0;3092 3093 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {3094 sband = priv->hw->wiphy->bands[band];3095 if (!sband)3096 continue;3097 3098 for (ch = 0; ch < sband->n_channels; ch++, idx++)3099 if (sband->channels[ch].center_freq == freq)3100 goto exit;3101 }3102 3103exit:3104 return idx;3105}3106 3107static void mwl8k_update_survey(struct mwl8k_priv *priv,3108 struct ieee80211_channel *channel)3109{3110 u32 cca_cnt, rx_rdy;3111 s8 nf = 0, idx;3112 struct survey_info *survey;3113 3114 idx = freq_to_idx(priv, priv->acs_chan->center_freq);3115 if (idx >= MWL8K_NUM_CHANS) {3116 wiphy_err(priv->hw->wiphy, "Failed to update survey\n");3117 return;3118 }3119 3120 survey = &priv->survey[idx];3121 3122 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG);3123 cca_cnt /= 1000; /* uSecs to mSecs */3124 survey->time_busy = (u64) cca_cnt;3125 3126 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG);3127 rx_rdy /= 1000; /* uSecs to mSecs */3128 survey->time_rx = (u64) rx_rdy;3129 3130 priv->channel_time = jiffies - priv->channel_time;3131 survey->time = jiffies_to_msecs(priv->channel_time);3132 3133 survey->channel = channel;3134 3135 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf);3136 3137 /* Make sure sign is negative else ACS at hostapd fails */3138 survey->noise = nf * -1;3139 3140 survey->filled = SURVEY_INFO_NOISE_DBM |3141 SURVEY_INFO_TIME |3142 SURVEY_INFO_TIME_BUSY |3143 SURVEY_INFO_TIME_RX;3144}3145 3146/*3147 * CMD_SET_RF_CHANNEL.3148 */3149struct mwl8k_cmd_set_rf_channel {3150 struct mwl8k_cmd_pkt_hdr header;3151 __le16 action;3152 __u8 current_channel;3153 __le32 channel_flags;3154} __packed;3155 3156static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,3157 struct ieee80211_conf *conf)3158{3159 struct ieee80211_channel *channel = conf->chandef.chan;3160 enum nl80211_channel_type channel_type =3161 cfg80211_get_chandef_type(&conf->chandef);3162 struct mwl8k_cmd_set_rf_channel *cmd;3163 struct mwl8k_priv *priv = hw->priv;3164 int rc;3165 3166 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3167 if (cmd == NULL)3168 return -ENOMEM;3169 3170 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);3171 cmd->header.length = cpu_to_le16(sizeof(*cmd));3172 cmd->action = cpu_to_le16(MWL8K_CMD_SET);3173 cmd->current_channel = channel->hw_value;3174 3175 if (channel->band == NL80211_BAND_2GHZ)3176 cmd->channel_flags |= cpu_to_le32(0x00000001);3177 else if (channel->band == NL80211_BAND_5GHZ)3178 cmd->channel_flags |= cpu_to_le32(0x00000004);3179 3180 if (!priv->sw_scan_start) {3181 if (channel_type == NL80211_CHAN_NO_HT ||3182 channel_type == NL80211_CHAN_HT20)3183 cmd->channel_flags |= cpu_to_le32(0x00000080);3184 else if (channel_type == NL80211_CHAN_HT40MINUS)3185 cmd->channel_flags |= cpu_to_le32(0x000001900);3186 else if (channel_type == NL80211_CHAN_HT40PLUS)3187 cmd->channel_flags |= cpu_to_le32(0x000000900);3188 } else {3189 cmd->channel_flags |= cpu_to_le32(0x00000080);3190 }3191 3192 if (priv->sw_scan_start) {3193 /* Store current channel stats3194 * before switching to newer one.3195 * This will be processed only for AP fw.3196 */3197 if (priv->channel_time != 0)3198 mwl8k_update_survey(priv, priv->acs_chan);3199 3200 priv->channel_time = jiffies;3201 priv->acs_chan = channel;3202 }3203 3204 rc = mwl8k_post_cmd(hw, &cmd->header);3205 kfree(cmd);3206 3207 return rc;3208}3209 3210/*3211 * CMD_SET_AID.3212 */3213#define MWL8K_FRAME_PROT_DISABLED 0x003214#define MWL8K_FRAME_PROT_11G 0x073215#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x023216#define MWL8K_FRAME_PROT_11N_HT_ALL 0x063217 3218struct mwl8k_cmd_update_set_aid {3219 struct mwl8k_cmd_pkt_hdr header;3220 __le16 aid;3221 3222 /* AP's MAC address (BSSID) */3223 __u8 bssid[ETH_ALEN];3224 __le16 protection_mode;3225 __u8 supp_rates[14];3226} __packed;3227 3228static void legacy_rate_mask_to_array(u8 *rates, u32 mask)3229{3230 int i;3231 int j;3232 3233 /*3234 * Clear nonstandard rate 4.3235 */3236 mask &= 0x1fef;3237 3238 for (i = 0, j = 0; i < 13; i++) {3239 if (mask & (1 << i))3240 rates[j++] = mwl8k_rates_24[i].hw_value;3241 }3242}3243 3244static int3245mwl8k_cmd_set_aid(struct ieee80211_hw *hw,3246 struct ieee80211_vif *vif, u32 legacy_rate_mask)3247{3248 struct mwl8k_cmd_update_set_aid *cmd;3249 u16 prot_mode;3250 int rc;3251 3252 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3253 if (cmd == NULL)3254 return -ENOMEM;3255 3256 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);3257 cmd->header.length = cpu_to_le16(sizeof(*cmd));3258 cmd->aid = cpu_to_le16(vif->cfg.aid);3259 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);3260 3261 if (vif->bss_conf.use_cts_prot) {3262 prot_mode = MWL8K_FRAME_PROT_11G;3263 } else {3264 switch (vif->bss_conf.ht_operation_mode &3265 IEEE80211_HT_OP_MODE_PROTECTION) {3266 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:3267 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;3268 break;3269 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:3270 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;3271 break;3272 default:3273 prot_mode = MWL8K_FRAME_PROT_DISABLED;3274 break;3275 }3276 }3277 cmd->protection_mode = cpu_to_le16(prot_mode);3278 3279 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);3280 3281 rc = mwl8k_post_cmd(hw, &cmd->header);3282 kfree(cmd);3283 3284 return rc;3285}3286 3287/*3288 * CMD_SET_RATE.3289 */3290struct mwl8k_cmd_set_rate {3291 struct mwl8k_cmd_pkt_hdr header;3292 __u8 legacy_rates[14];3293 3294 /* Bitmap for supported MCS codes. */3295 __u8 mcs_set[16];3296 __u8 reserved[16];3297} __packed;3298 3299static int3300mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,3301 u32 legacy_rate_mask, u8 *mcs_rates)3302{3303 struct mwl8k_cmd_set_rate *cmd;3304 int rc;3305 3306 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3307 if (cmd == NULL)3308 return -ENOMEM;3309 3310 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);3311 cmd->header.length = cpu_to_le16(sizeof(*cmd));3312 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);3313 memcpy(cmd->mcs_set, mcs_rates, 16);3314 3315 rc = mwl8k_post_cmd(hw, &cmd->header);3316 kfree(cmd);3317 3318 return rc;3319}3320 3321/*3322 * CMD_FINALIZE_JOIN.3323 */3324#define MWL8K_FJ_BEACON_MAXLEN 1283325 3326struct mwl8k_cmd_finalize_join {3327 struct mwl8k_cmd_pkt_hdr header;3328 __le32 sleep_interval; /* Number of beacon periods to sleep */3329 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];3330} __packed;3331 3332static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,3333 int framelen, int dtim)3334{3335 struct mwl8k_cmd_finalize_join *cmd;3336 struct ieee80211_mgmt *payload = frame;3337 int payload_len;3338 int rc;3339 3340 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3341 if (cmd == NULL)3342 return -ENOMEM;3343 3344 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);3345 cmd->header.length = cpu_to_le16(sizeof(*cmd));3346 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);3347 3348 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);3349 if (payload_len < 0)3350 payload_len = 0;3351 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)3352 payload_len = MWL8K_FJ_BEACON_MAXLEN;3353 3354 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);3355 3356 rc = mwl8k_post_cmd(hw, &cmd->header);3357 kfree(cmd);3358 3359 return rc;3360}3361 3362/*3363 * CMD_SET_RTS_THRESHOLD.3364 */3365struct mwl8k_cmd_set_rts_threshold {3366 struct mwl8k_cmd_pkt_hdr header;3367 __le16 action;3368 __le16 threshold;3369} __packed;3370 3371static int3372mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)3373{3374 struct mwl8k_cmd_set_rts_threshold *cmd;3375 int rc;3376 3377 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3378 if (cmd == NULL)3379 return -ENOMEM;3380 3381 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);3382 cmd->header.length = cpu_to_le16(sizeof(*cmd));3383 cmd->action = cpu_to_le16(MWL8K_CMD_SET);3384 cmd->threshold = cpu_to_le16(rts_thresh);3385 3386 rc = mwl8k_post_cmd(hw, &cmd->header);3387 kfree(cmd);3388 3389 return rc;3390}3391 3392/*3393 * CMD_SET_SLOT.3394 */3395struct mwl8k_cmd_set_slot {3396 struct mwl8k_cmd_pkt_hdr header;3397 __le16 action;3398 __u8 short_slot;3399} __packed;3400 3401static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)3402{3403 struct mwl8k_cmd_set_slot *cmd;3404 int rc;3405 3406 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3407 if (cmd == NULL)3408 return -ENOMEM;3409 3410 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);3411 cmd->header.length = cpu_to_le16(sizeof(*cmd));3412 cmd->action = cpu_to_le16(MWL8K_CMD_SET);3413 cmd->short_slot = short_slot_time;3414 3415 rc = mwl8k_post_cmd(hw, &cmd->header);3416 kfree(cmd);3417 3418 return rc;3419}3420 3421/*3422 * CMD_SET_EDCA_PARAMS.3423 */3424struct mwl8k_cmd_set_edca_params {3425 struct mwl8k_cmd_pkt_hdr header;3426 3427 /* See MWL8K_SET_EDCA_XXX below */3428 __le16 action;3429 3430 /* TX opportunity in units of 32 us */3431 __le16 txop;3432 3433 union {3434 struct {3435 /* Log exponent of max contention period: 0...15 */3436 __le32 log_cw_max;3437 3438 /* Log exponent of min contention period: 0...15 */3439 __le32 log_cw_min;3440 3441 /* Adaptive interframe spacing in units of 32us */3442 __u8 aifs;3443 3444 /* TX queue to configure */3445 __u8 txq;3446 } ap;3447 struct {3448 /* Log exponent of max contention period: 0...15 */3449 __u8 log_cw_max;3450 3451 /* Log exponent of min contention period: 0...15 */3452 __u8 log_cw_min;3453 3454 /* Adaptive interframe spacing in units of 32us */3455 __u8 aifs;3456 3457 /* TX queue to configure */3458 __u8 txq;3459 } sta;3460 };3461} __packed;3462 3463#define MWL8K_SET_EDCA_CW 0x013464#define MWL8K_SET_EDCA_TXOP 0x023465#define MWL8K_SET_EDCA_AIFS 0x043466 3467#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \3468 MWL8K_SET_EDCA_TXOP | \3469 MWL8K_SET_EDCA_AIFS)3470 3471static int3472mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,3473 __u16 cw_min, __u16 cw_max,3474 __u8 aifs, __u16 txop)3475{3476 struct mwl8k_priv *priv = hw->priv;3477 struct mwl8k_cmd_set_edca_params *cmd;3478 int rc;3479 3480 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3481 if (cmd == NULL)3482 return -ENOMEM;3483 3484 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);3485 cmd->header.length = cpu_to_le16(sizeof(*cmd));3486 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);3487 cmd->txop = cpu_to_le16(txop);3488 if (priv->ap_fw) {3489 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));3490 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));3491 cmd->ap.aifs = aifs;3492 cmd->ap.txq = qnum;3493 } else {3494 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);3495 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);3496 cmd->sta.aifs = aifs;3497 cmd->sta.txq = qnum;3498 }3499 3500 rc = mwl8k_post_cmd(hw, &cmd->header);3501 kfree(cmd);3502 3503 return rc;3504}3505 3506/*3507 * CMD_SET_WMM_MODE.3508 */3509struct mwl8k_cmd_set_wmm_mode {3510 struct mwl8k_cmd_pkt_hdr header;3511 __le16 action;3512} __packed;3513 3514static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)3515{3516 struct mwl8k_priv *priv = hw->priv;3517 struct mwl8k_cmd_set_wmm_mode *cmd;3518 int rc;3519 3520 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3521 if (cmd == NULL)3522 return -ENOMEM;3523 3524 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);3525 cmd->header.length = cpu_to_le16(sizeof(*cmd));3526 cmd->action = cpu_to_le16(!!enable);3527 3528 rc = mwl8k_post_cmd(hw, &cmd->header);3529 kfree(cmd);3530 3531 if (!rc)3532 priv->wmm_enabled = enable;3533 3534 return rc;3535}3536 3537/*3538 * CMD_MIMO_CONFIG.3539 */3540struct mwl8k_cmd_mimo_config {3541 struct mwl8k_cmd_pkt_hdr header;3542 __le32 action;3543 __u8 rx_antenna_map;3544 __u8 tx_antenna_map;3545} __packed;3546 3547static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)3548{3549 struct mwl8k_cmd_mimo_config *cmd;3550 int rc;3551 3552 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3553 if (cmd == NULL)3554 return -ENOMEM;3555 3556 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);3557 cmd->header.length = cpu_to_le16(sizeof(*cmd));3558 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);3559 cmd->rx_antenna_map = rx;3560 cmd->tx_antenna_map = tx;3561 3562 rc = mwl8k_post_cmd(hw, &cmd->header);3563 kfree(cmd);3564 3565 return rc;3566}3567 3568/*3569 * CMD_USE_FIXED_RATE (STA version).3570 */3571struct mwl8k_cmd_use_fixed_rate_sta {3572 struct mwl8k_cmd_pkt_hdr header;3573 __le32 action;3574 __le32 allow_rate_drop;3575 __le32 num_rates;3576 struct {3577 __le32 is_ht_rate;3578 __le32 enable_retry;3579 __le32 rate;3580 __le32 retry_count;3581 } rate_entry[8];3582 __le32 rate_type;3583 __le32 reserved1;3584 __le32 reserved2;3585} __packed;3586 3587#define MWL8K_USE_AUTO_RATE 0x00023588#define MWL8K_UCAST_RATE 03589 3590static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)3591{3592 struct mwl8k_cmd_use_fixed_rate_sta *cmd;3593 int rc;3594 3595 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3596 if (cmd == NULL)3597 return -ENOMEM;3598 3599 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);3600 cmd->header.length = cpu_to_le16(sizeof(*cmd));3601 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);3602 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);3603 3604 rc = mwl8k_post_cmd(hw, &cmd->header);3605 kfree(cmd);3606 3607 return rc;3608}3609 3610/*3611 * CMD_USE_FIXED_RATE (AP version).3612 */3613struct mwl8k_cmd_use_fixed_rate_ap {3614 struct mwl8k_cmd_pkt_hdr header;3615 __le32 action;3616 __le32 allow_rate_drop;3617 __le32 num_rates;3618 struct mwl8k_rate_entry_ap {3619 __le32 is_ht_rate;3620 __le32 enable_retry;3621 __le32 rate;3622 __le32 retry_count;3623 } rate_entry[4];3624 u8 multicast_rate;3625 u8 multicast_rate_type;3626 u8 management_rate;3627} __packed;3628 3629static int3630mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)3631{3632 struct mwl8k_cmd_use_fixed_rate_ap *cmd;3633 int rc;3634 3635 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3636 if (cmd == NULL)3637 return -ENOMEM;3638 3639 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);3640 cmd->header.length = cpu_to_le16(sizeof(*cmd));3641 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);3642 cmd->multicast_rate = mcast;3643 cmd->management_rate = mgmt;3644 3645 rc = mwl8k_post_cmd(hw, &cmd->header);3646 kfree(cmd);3647 3648 return rc;3649}3650 3651/*3652 * CMD_ENABLE_SNIFFER.3653 */3654struct mwl8k_cmd_enable_sniffer {3655 struct mwl8k_cmd_pkt_hdr header;3656 __le32 action;3657} __packed;3658 3659static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)3660{3661 struct mwl8k_cmd_enable_sniffer *cmd;3662 int rc;3663 3664 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3665 if (cmd == NULL)3666 return -ENOMEM;3667 3668 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);3669 cmd->header.length = cpu_to_le16(sizeof(*cmd));3670 cmd->action = cpu_to_le32(!!enable);3671 3672 rc = mwl8k_post_cmd(hw, &cmd->header);3673 kfree(cmd);3674 3675 return rc;3676}3677 3678struct mwl8k_cmd_update_mac_addr {3679 struct mwl8k_cmd_pkt_hdr header;3680 union {3681 struct {3682 __le16 mac_type;3683 __u8 mac_addr[ETH_ALEN];3684 } mbss;3685 __u8 mac_addr[ETH_ALEN];3686 };3687} __packed;3688 3689#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 03690#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 13691#define MWL8K_MAC_TYPE_PRIMARY_AP 23692#define MWL8K_MAC_TYPE_SECONDARY_AP 33693 3694static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,3695 struct ieee80211_vif *vif, u8 *mac, bool set)3696{3697 struct mwl8k_priv *priv = hw->priv;3698 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);3699 struct mwl8k_cmd_update_mac_addr *cmd;3700 int mac_type;3701 int rc;3702 3703 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;3704 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {3705 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))3706 if (priv->ap_fw)3707 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;3708 else3709 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;3710 else3711 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;3712 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {3713 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))3714 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;3715 else3716 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;3717 }3718 3719 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3720 if (cmd == NULL)3721 return -ENOMEM;3722 3723 if (set)3724 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);3725 else3726 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);3727 3728 cmd->header.length = cpu_to_le16(sizeof(*cmd));3729 if (priv->ap_fw) {3730 cmd->mbss.mac_type = cpu_to_le16(mac_type);3731 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);3732 } else {3733 memcpy(cmd->mac_addr, mac, ETH_ALEN);3734 }3735 3736 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);3737 kfree(cmd);3738 3739 return rc;3740}3741 3742/*3743 * MWL8K_CMD_SET_MAC_ADDR.3744 */3745static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,3746 struct ieee80211_vif *vif, u8 *mac)3747{3748 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);3749}3750 3751/*3752 * MWL8K_CMD_DEL_MAC_ADDR.3753 */3754static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,3755 struct ieee80211_vif *vif, u8 *mac)3756{3757 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);3758}3759 3760/*3761 * CMD_SET_RATEADAPT_MODE.3762 */3763struct mwl8k_cmd_set_rate_adapt_mode {3764 struct mwl8k_cmd_pkt_hdr header;3765 __le16 action;3766 __le16 mode;3767} __packed;3768 3769static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)3770{3771 struct mwl8k_cmd_set_rate_adapt_mode *cmd;3772 int rc;3773 3774 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3775 if (cmd == NULL)3776 return -ENOMEM;3777 3778 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);3779 cmd->header.length = cpu_to_le16(sizeof(*cmd));3780 cmd->action = cpu_to_le16(MWL8K_CMD_SET);3781 cmd->mode = cpu_to_le16(mode);3782 3783 rc = mwl8k_post_cmd(hw, &cmd->header);3784 kfree(cmd);3785 3786 return rc;3787}3788 3789/*3790 * CMD_GET_WATCHDOG_BITMAP.3791 */3792struct mwl8k_cmd_get_watchdog_bitmap {3793 struct mwl8k_cmd_pkt_hdr header;3794 u8 bitmap;3795} __packed;3796 3797static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)3798{3799 struct mwl8k_cmd_get_watchdog_bitmap *cmd;3800 int rc;3801 3802 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3803 if (cmd == NULL)3804 return -ENOMEM;3805 3806 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);3807 cmd->header.length = cpu_to_le16(sizeof(*cmd));3808 3809 rc = mwl8k_post_cmd(hw, &cmd->header);3810 if (!rc)3811 *bitmap = cmd->bitmap;3812 3813 kfree(cmd);3814 3815 return rc;3816}3817 3818#define MWL8K_WMM_QUEUE_NUMBER 33819 3820static void mwl8k_destroy_ba(struct ieee80211_hw *hw,3821 u8 idx);3822 3823static void mwl8k_watchdog_ba_events(struct work_struct *work)3824{3825 int rc;3826 u8 bitmap = 0, stream_index;3827 struct mwl8k_ampdu_stream *streams;3828 struct mwl8k_priv *priv =3829 container_of(work, struct mwl8k_priv, watchdog_ba_handle);3830 struct ieee80211_hw *hw = priv->hw;3831 int i;3832 u32 status = 0;3833 3834 mwl8k_fw_lock(hw);3835 3836 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);3837 if (rc)3838 goto done;3839 3840 spin_lock(&priv->stream_lock);3841 3842 /* the bitmap is the hw queue number. Map it to the ampdu queue. */3843 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {3844 if (bitmap & (1 << i)) {3845 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %3846 TOTAL_HW_TX_QUEUES;3847 streams = &priv->ampdu[stream_index];3848 if (streams->state == AMPDU_STREAM_ACTIVE) {3849 ieee80211_stop_tx_ba_session(streams->sta,3850 streams->tid);3851 spin_unlock(&priv->stream_lock);3852 mwl8k_destroy_ba(hw, stream_index);3853 spin_lock(&priv->stream_lock);3854 }3855 }3856 }3857 3858 spin_unlock(&priv->stream_lock);3859done:3860 atomic_dec(&priv->watchdog_event_pending);3861 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);3862 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),3863 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);3864 mwl8k_fw_unlock(hw);3865 return;3866}3867 3868 3869/*3870 * CMD_BSS_START.3871 */3872struct mwl8k_cmd_bss_start {3873 struct mwl8k_cmd_pkt_hdr header;3874 __le32 enable;3875} __packed;3876 3877static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,3878 struct ieee80211_vif *vif, int enable)3879{3880 struct mwl8k_cmd_bss_start *cmd;3881 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);3882 struct mwl8k_priv *priv = hw->priv;3883 int rc;3884 3885 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))3886 return 0;3887 3888 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))3889 return 0;3890 3891 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3892 if (cmd == NULL)3893 return -ENOMEM;3894 3895 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);3896 cmd->header.length = cpu_to_le16(sizeof(*cmd));3897 cmd->enable = cpu_to_le32(enable);3898 3899 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);3900 kfree(cmd);3901 3902 if (!rc) {3903 if (enable)3904 priv->running_bsses |= (1 << mwl8k_vif->macid);3905 else3906 priv->running_bsses &= ~(1 << mwl8k_vif->macid);3907 }3908 return rc;3909}3910 3911static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)3912{3913 struct mwl8k_priv *priv = hw->priv;3914 struct mwl8k_vif *mwl8k_vif, *tmp_vif;3915 struct ieee80211_vif *vif;3916 3917 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {3918 vif = mwl8k_vif->vif;3919 3920 if (!(bitmap & (1 << mwl8k_vif->macid)))3921 continue;3922 3923 if (vif->type == NL80211_IFTYPE_AP)3924 mwl8k_cmd_bss_start(hw, vif, enable);3925 }3926}3927/*3928 * CMD_BASTREAM.3929 */3930 3931/*3932 * UPSTREAM is tx direction3933 */3934#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x003935#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x013936 3937enum ba_stream_action_type {3938 MWL8K_BA_CREATE,3939 MWL8K_BA_UPDATE,3940 MWL8K_BA_DESTROY,3941 MWL8K_BA_FLUSH,3942 MWL8K_BA_CHECK,3943};3944 3945 3946struct mwl8k_create_ba_stream {3947 __le32 flags;3948 __le32 idle_thrs;3949 __le32 bar_thrs;3950 __le32 window_size;3951 u8 peer_mac_addr[6];3952 u8 dialog_token;3953 u8 tid;3954 u8 queue_id;3955 u8 param_info;3956 __le32 ba_context;3957 u8 reset_seq_no_flag;3958 __le16 curr_seq_no;3959 u8 sta_src_mac_addr[6];3960} __packed;3961 3962struct mwl8k_destroy_ba_stream {3963 __le32 flags;3964 __le32 ba_context;3965} __packed;3966 3967struct mwl8k_cmd_bastream {3968 struct mwl8k_cmd_pkt_hdr header;3969 __le32 action;3970 union {3971 struct mwl8k_create_ba_stream create_params;3972 struct mwl8k_destroy_ba_stream destroy_params;3973 };3974} __packed;3975 3976static int3977mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,3978 struct ieee80211_vif *vif)3979{3980 struct mwl8k_cmd_bastream *cmd;3981 int rc;3982 3983 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);3984 if (cmd == NULL)3985 return -ENOMEM;3986 3987 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);3988 cmd->header.length = cpu_to_le16(sizeof(*cmd));3989 3990 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);3991 3992 cmd->create_params.queue_id = stream->idx;3993 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,3994 ETH_ALEN);3995 cmd->create_params.tid = stream->tid;3996 3997 cmd->create_params.flags =3998 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |3999 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);4000 4001 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);4002 4003 kfree(cmd);4004 4005 return rc;4006}4007 4008static int4009mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,4010 u8 buf_size, struct ieee80211_vif *vif)4011{4012 struct mwl8k_cmd_bastream *cmd;4013 int rc;4014 4015 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);4016 if (cmd == NULL)4017 return -ENOMEM;4018 4019 4020 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);4021 cmd->header.length = cpu_to_le16(sizeof(*cmd));4022 4023 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);4024 4025 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);4026 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);4027 cmd->create_params.queue_id = stream->idx;4028 4029 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);4030 cmd->create_params.tid = stream->tid;4031 cmd->create_params.curr_seq_no = cpu_to_le16(0);4032 cmd->create_params.reset_seq_no_flag = 1;4033 4034 cmd->create_params.param_info =4035 (stream->sta->deflink.ht_cap.ampdu_factor &4036 IEEE80211_HT_AMPDU_PARM_FACTOR) |4037 ((stream->sta->deflink.ht_cap.ampdu_density << 2) &4038 IEEE80211_HT_AMPDU_PARM_DENSITY);4039 4040 cmd->create_params.flags =4041 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |4042 BASTREAM_FLAG_DIRECTION_UPSTREAM);4043 4044 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);4045 4046 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",4047 stream->sta->addr, stream->tid);4048 kfree(cmd);4049 4050 return rc;4051}4052 4053static void mwl8k_destroy_ba(struct ieee80211_hw *hw,4054 u8 idx)4055{4056 struct mwl8k_cmd_bastream *cmd;4057 4058 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);4059 if (cmd == NULL)4060 return;4061 4062 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);4063 cmd->header.length = cpu_to_le16(sizeof(*cmd));4064 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);4065 4066 cmd->destroy_params.ba_context = cpu_to_le32(idx);4067 mwl8k_post_cmd(hw, &cmd->header);4068 4069 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);4070 4071 kfree(cmd);4072}4073 4074/*4075 * CMD_SET_NEW_STN.4076 */4077struct mwl8k_cmd_set_new_stn {4078 struct mwl8k_cmd_pkt_hdr header;4079 __le16 aid;4080 __u8 mac_addr[6];4081 __le16 stn_id;4082 __le16 action;4083 __le16 rsvd;4084 __le32 legacy_rates;4085 __u8 ht_rates[4];4086 __le16 cap_info;4087 __le16 ht_capabilities_info;4088 __u8 mac_ht_param_info;4089 __u8 rev;4090 __u8 control_channel;4091 __u8 add_channel;4092 __le16 op_mode;4093 __le16 stbc;4094 __u8 add_qos_info;4095 __u8 is_qos_sta;4096 __le32 fw_sta_ptr;4097} __packed;4098 4099#define MWL8K_STA_ACTION_ADD 04100#define MWL8K_STA_ACTION_REMOVE 24101 4102static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,4103 struct ieee80211_vif *vif,4104 struct ieee80211_sta *sta)4105{4106 struct mwl8k_cmd_set_new_stn *cmd;4107 u32 rates;4108 int rc;4109 4110 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);4111 if (cmd == NULL)4112 return -ENOMEM;4113 4114 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);4115 cmd->header.length = cpu_to_le16(sizeof(*cmd));4116 cmd->aid = cpu_to_le16(sta->aid);4117 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);4118 cmd->stn_id = cpu_to_le16(sta->aid);4119 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);4120 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)4121 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ];4122 else4123 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;4124 cmd->legacy_rates = cpu_to_le32(rates);4125 if (sta->deflink.ht_cap.ht_supported) {4126 cmd->ht_rates[0] = sta->deflink.ht_cap.mcs.rx_mask[0];4127 cmd->ht_rates[1] = sta->deflink.ht_cap.mcs.rx_mask[1];4128 cmd->ht_rates[2] = sta->deflink.ht_cap.mcs.rx_mask[2];4129 cmd->ht_rates[3] = sta->deflink.ht_cap.mcs.rx_mask[3];4130 cmd->ht_capabilities_info = cpu_to_le16(sta->deflink.ht_cap.cap);4131 cmd->mac_ht_param_info = (sta->deflink.ht_cap.ampdu_factor & 3) |4132 ((sta->deflink.ht_cap.ampdu_density & 7) << 2);4133 cmd->is_qos_sta = 1;4134 }4135 4136 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);4137 kfree(cmd);4138 4139 return rc;4140}4141 4142static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,4143 struct ieee80211_vif *vif)4144{4145 struct mwl8k_cmd_set_new_stn *cmd;4146 int rc;4147 4148 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);4149 if (cmd == NULL)4150 return -ENOMEM;4151 4152 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);4153 cmd->header.length = cpu_to_le16(sizeof(*cmd));4154 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);4155 4156 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);4157 kfree(cmd);4158 4159 return rc;4160}4161 4162static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,4163 struct ieee80211_vif *vif, u8 *addr)4164{4165 struct mwl8k_cmd_set_new_stn *cmd;4166 struct mwl8k_priv *priv = hw->priv;4167 int rc, i;4168 u8 idx;4169 4170 spin_lock(&priv->stream_lock);4171 /* Destroy any active ampdu streams for this sta */4172 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {4173 struct mwl8k_ampdu_stream *s;4174 s = &priv->ampdu[i];4175 if (s->state != AMPDU_NO_STREAM) {4176 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {4177 if (s->state == AMPDU_STREAM_ACTIVE) {4178 idx = s->idx;4179 spin_unlock(&priv->stream_lock);4180 mwl8k_destroy_ba(hw, idx);4181 spin_lock(&priv->stream_lock);4182 } else if (s->state == AMPDU_STREAM_NEW) {4183 mwl8k_remove_stream(hw, s);4184 }4185 }4186 }4187 }4188 4189 spin_unlock(&priv->stream_lock);4190 4191 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);4192 if (cmd == NULL)4193 return -ENOMEM;4194 4195 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);4196 cmd->header.length = cpu_to_le16(sizeof(*cmd));4197 memcpy(cmd->mac_addr, addr, ETH_ALEN);4198 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);4199 4200 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);4201 kfree(cmd);4202 4203 return rc;4204}4205 4206/*4207 * CMD_UPDATE_ENCRYPTION.4208 */4209 4210#define MAX_ENCR_KEY_LENGTH 164211#define MIC_KEY_LENGTH 84212 4213struct mwl8k_cmd_update_encryption {4214 struct mwl8k_cmd_pkt_hdr header;4215 4216 __le32 action;4217 __le32 reserved;4218 __u8 mac_addr[6];4219 __u8 encr_type;4220 4221} __packed;4222 4223struct mwl8k_cmd_set_key {4224 struct mwl8k_cmd_pkt_hdr header;4225 4226 __le32 action;4227 __le32 reserved;4228 __le16 length;4229 __le16 key_type_id;4230 __le32 key_info;4231 __le32 key_id;4232 __le16 key_len;4233 struct {4234 __u8 key_material[MAX_ENCR_KEY_LENGTH];4235 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];4236 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];4237 } tkip;4238 __le16 tkip_rsc_low;4239 __le32 tkip_rsc_high;4240 __le16 tkip_tsc_low;4241 __le32 tkip_tsc_high;4242 __u8 mac_addr[6];4243} __packed;4244 4245enum {4246 MWL8K_ENCR_ENABLE,4247 MWL8K_ENCR_SET_KEY,4248 MWL8K_ENCR_REMOVE_KEY,4249 MWL8K_ENCR_SET_GROUP_KEY,4250};4251 4252#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 04253#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 14254#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 44255#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 74256#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 84257 4258enum {4259 MWL8K_ALG_WEP,4260 MWL8K_ALG_TKIP,4261 MWL8K_ALG_CCMP,4262};4263 4264#define MWL8K_KEY_FLAG_TXGROUPKEY 0x000000044265#define MWL8K_KEY_FLAG_PAIRWISE 0x000000084266#define MWL8K_KEY_FLAG_TSC_VALID 0x000000404267#define MWL8K_KEY_FLAG_WEP_TXKEY 0x010000004268#define MWL8K_KEY_FLAG_MICKEY_VALID 0x020000004269 4270static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,4271 struct ieee80211_vif *vif,4272 u8 *addr,4273 u8 encr_type)4274{4275 struct mwl8k_cmd_update_encryption *cmd;4276 int rc;4277 4278 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);4279 if (cmd == NULL)4280 return -ENOMEM;4281 4282 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);4283 cmd->header.length = cpu_to_le16(sizeof(*cmd));4284 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);4285 memcpy(cmd->mac_addr, addr, ETH_ALEN);4286 cmd->encr_type = encr_type;4287 4288 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);4289 kfree(cmd);4290 4291 return rc;4292}4293 4294static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,4295 u8 *addr,4296 struct ieee80211_key_conf *key)4297{4298 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);4299 cmd->header.length = cpu_to_le16(sizeof(*cmd));4300 cmd->length = cpu_to_le16(sizeof(*cmd) -4301 offsetof(struct mwl8k_cmd_set_key, length));4302 cmd->key_id = cpu_to_le32(key->keyidx);4303 cmd->key_len = cpu_to_le16(key->keylen);4304 memcpy(cmd->mac_addr, addr, ETH_ALEN);4305 4306 switch (key->cipher) {4307 case WLAN_CIPHER_SUITE_WEP40:4308 case WLAN_CIPHER_SUITE_WEP104:4309 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);4310 if (key->keyidx == 0)4311 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);4312 4313 break;4314 case WLAN_CIPHER_SUITE_TKIP:4315 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);4316 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)4317 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)4318 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);4319 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID4320 | MWL8K_KEY_FLAG_TSC_VALID);4321 break;4322 case WLAN_CIPHER_SUITE_CCMP:4323 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);4324 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)4325 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)4326 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);4327 break;4328 default:4329 return -ENOTSUPP;4330 }4331 4332 return 0;4333}4334 4335static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,4336 struct ieee80211_vif *vif,4337 u8 *addr,4338 struct ieee80211_key_conf *key)4339{4340 struct mwl8k_cmd_set_key *cmd;4341 int rc;4342 int keymlen;4343 u32 action;4344 u8 idx;4345 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);4346 4347 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);4348 if (cmd == NULL)4349 return -ENOMEM;4350 4351 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);4352 if (rc < 0)4353 goto done;4354 4355 idx = key->keyidx;4356 4357 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)4358 action = MWL8K_ENCR_SET_KEY;4359 else4360 action = MWL8K_ENCR_SET_GROUP_KEY;4361 4362 switch (key->cipher) {4363 case WLAN_CIPHER_SUITE_WEP40:4364 case WLAN_CIPHER_SUITE_WEP104:4365 if (!mwl8k_vif->wep_key_conf[idx].enabled) {4366 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,4367 sizeof(*key) + key->keylen);4368 mwl8k_vif->wep_key_conf[idx].enabled = 1;4369 }4370 4371 keymlen = key->keylen;4372 action = MWL8K_ENCR_SET_KEY;4373 break;4374 case WLAN_CIPHER_SUITE_TKIP:4375 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;4376 break;4377 case WLAN_CIPHER_SUITE_CCMP:4378 keymlen = key->keylen;4379 break;4380 default:4381 rc = -ENOTSUPP;4382 goto done;4383 }4384 4385 memcpy(&cmd->tkip, key->key, keymlen);4386 cmd->action = cpu_to_le32(action);4387 4388 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);4389done:4390 kfree(cmd);4391 4392 return rc;4393}4394 4395static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,4396 struct ieee80211_vif *vif,4397 u8 *addr,4398 struct ieee80211_key_conf *key)4399{4400 struct mwl8k_cmd_set_key *cmd;4401 int rc;4402 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);4403 4404 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);4405 if (cmd == NULL)4406 return -ENOMEM;4407 4408 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);4409 if (rc < 0)4410 goto done;4411 4412 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||4413 key->cipher == WLAN_CIPHER_SUITE_WEP104)4414 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;4415 4416 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);4417 4418 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);4419done:4420 kfree(cmd);4421 4422 return rc;4423}4424 4425static int mwl8k_set_key(struct ieee80211_hw *hw,4426 enum set_key_cmd cmd_param,4427 struct ieee80211_vif *vif,4428 struct ieee80211_sta *sta,4429 struct ieee80211_key_conf *key)4430{4431 int rc = 0;4432 u8 encr_type;4433 u8 *addr;4434 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);4435 struct mwl8k_priv *priv = hw->priv;4436 4437 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)4438 return -EOPNOTSUPP;4439 4440 if (sta == NULL)4441 addr = vif->addr;4442 else4443 addr = sta->addr;4444 4445 if (cmd_param == SET_KEY) {4446 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);4447 if (rc)4448 goto out;4449 4450 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)4451 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))4452 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;4453 else4454 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;4455 4456 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,4457 encr_type);4458 if (rc)4459 goto out;4460 4461 mwl8k_vif->is_hw_crypto_enabled = true;4462 4463 } else {4464 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);4465 4466 if (rc)4467 goto out;4468 }4469out:4470 return rc;4471}4472 4473/*4474 * CMD_UPDATE_STADB.4475 */4476struct ewc_ht_info {4477 __le16 control1;4478 __le16 control2;4479 __le16 control3;4480} __packed;4481 4482struct peer_capability_info {4483 /* Peer type - AP vs. STA. */4484 __u8 peer_type;4485 4486 /* Basic 802.11 capabilities from assoc resp. */4487 __le16 basic_caps;4488 4489 /* Set if peer supports 802.11n high throughput (HT). */4490 __u8 ht_support;4491 4492 /* Valid if HT is supported. */4493 __le16 ht_caps;4494 __u8 extended_ht_caps;4495 struct ewc_ht_info ewc_info;4496 4497 /* Legacy rate table. Intersection of our rates and peer rates. */4498 __u8 legacy_rates[12];4499 4500 /* HT rate table. Intersection of our rates and peer rates. */4501 __u8 ht_rates[16];4502 __u8 pad[16];4503 4504 /* If set, interoperability mode, no proprietary extensions. */4505 __u8 interop;4506 __u8 pad2;4507 __u8 station_id;4508 __le16 amsdu_enabled;4509} __packed;4510 4511struct mwl8k_cmd_update_stadb {4512 struct mwl8k_cmd_pkt_hdr header;4513 4514 /* See STADB_ACTION_TYPE */4515 __le32 action;4516 4517 /* Peer MAC address */4518 __u8 peer_addr[ETH_ALEN];4519 4520 __le32 reserved;4521 4522 /* Peer info - valid during add/update. */4523 struct peer_capability_info peer_info;4524} __packed;4525 4526#define MWL8K_STA_DB_MODIFY_ENTRY 14527#define MWL8K_STA_DB_DEL_ENTRY 24528 4529/* Peer Entry flags - used to define the type of the peer node */4530#define MWL8K_PEER_TYPE_ACCESSPOINT 24531 4532static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,4533 struct ieee80211_vif *vif,4534 struct ieee80211_sta *sta)4535{4536 struct mwl8k_cmd_update_stadb *cmd;4537 struct peer_capability_info *p;4538 u32 rates;4539 int rc;4540 4541 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);4542 if (cmd == NULL)4543 return -ENOMEM;4544 4545 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);4546 cmd->header.length = cpu_to_le16(sizeof(*cmd));4547 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);4548 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);4549 4550 p = &cmd->peer_info;4551 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;4552 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);4553 p->ht_support = sta->deflink.ht_cap.ht_supported;4554 p->ht_caps = cpu_to_le16(sta->deflink.ht_cap.cap);4555 p->extended_ht_caps = (sta->deflink.ht_cap.ampdu_factor & 3) |4556 ((sta->deflink.ht_cap.ampdu_density & 7) << 2);4557 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)4558 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ];4559 else4560 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;4561 legacy_rate_mask_to_array(p->legacy_rates, rates);4562 memcpy(p->ht_rates, &sta->deflink.ht_cap.mcs, 16);4563 p->interop = 1;4564 p->amsdu_enabled = 0;4565 4566 rc = mwl8k_post_cmd(hw, &cmd->header);4567 if (!rc)4568 rc = p->station_id;4569 kfree(cmd);4570 4571 return rc;4572}4573 4574static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,4575 struct ieee80211_vif *vif, u8 *addr)4576{4577 struct mwl8k_cmd_update_stadb *cmd;4578 int rc;4579 4580 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);4581 if (cmd == NULL)4582 return -ENOMEM;4583 4584 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);4585 cmd->header.length = cpu_to_le16(sizeof(*cmd));4586 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);4587 memcpy(cmd->peer_addr, addr, ETH_ALEN);4588 4589 rc = mwl8k_post_cmd(hw, &cmd->header);4590 kfree(cmd);4591 4592 return rc;4593}4594 4595 4596/*4597 * Interrupt handling.4598 */4599static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)4600{4601 struct ieee80211_hw *hw = dev_id;4602 struct mwl8k_priv *priv = hw->priv;4603 u32 status;4604 4605 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);4606 if (!status)4607 return IRQ_NONE;4608 4609 if (status & MWL8K_A2H_INT_TX_DONE) {4610 status &= ~MWL8K_A2H_INT_TX_DONE;4611 tasklet_schedule(&priv->poll_tx_task);4612 }4613 4614 if (status & MWL8K_A2H_INT_RX_READY) {4615 status &= ~MWL8K_A2H_INT_RX_READY;4616 tasklet_schedule(&priv->poll_rx_task);4617 }4618 4619 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {4620 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,4621 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);4622 4623 atomic_inc(&priv->watchdog_event_pending);4624 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;4625 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);4626 }4627 4628 if (status)4629 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);4630 4631 if (status & MWL8K_A2H_INT_OPC_DONE) {4632 if (priv->hostcmd_wait != NULL)4633 complete(priv->hostcmd_wait);4634 }4635 4636 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {4637 if (!mutex_is_locked(&priv->fw_mutex) &&4638 priv->radio_on && priv->pending_tx_pkts)4639 mwl8k_tx_start(priv);4640 }4641 4642 return IRQ_HANDLED;4643}4644 4645static void mwl8k_tx_poll(struct tasklet_struct *t)4646{4647 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_tx_task);4648 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev);4649 int limit;4650 int i;4651 4652 limit = 32;4653 4654 spin_lock(&priv->tx_lock);4655 4656 for (i = 0; i < mwl8k_tx_queues(priv); i++)4657 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);4658 4659 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {4660 complete(priv->tx_wait);4661 priv->tx_wait = NULL;4662 }4663 4664 spin_unlock(&priv->tx_lock);4665 4666 if (limit) {4667 writel(~MWL8K_A2H_INT_TX_DONE,4668 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);4669 } else {4670 tasklet_schedule(&priv->poll_tx_task);4671 }4672}4673 4674static void mwl8k_rx_poll(struct tasklet_struct *t)4675{4676 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_rx_task);4677 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev);4678 int limit;4679 4680 limit = 32;4681 limit -= rxq_process(hw, 0, limit);4682 limit -= rxq_refill(hw, 0, limit);4683 4684 if (limit) {4685 writel(~MWL8K_A2H_INT_RX_READY,4686 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);4687 } else {4688 tasklet_schedule(&priv->poll_rx_task);4689 }4690}4691 4692 4693/*4694 * Core driver operations.4695 */4696static void mwl8k_tx(struct ieee80211_hw *hw,4697 struct ieee80211_tx_control *control,4698 struct sk_buff *skb)4699{4700 struct mwl8k_priv *priv = hw->priv;4701 int index = skb_get_queue_mapping(skb);4702 4703 if (!priv->radio_on) {4704 wiphy_debug(hw->wiphy,4705 "dropped TX frame since radio disabled\n");4706 dev_kfree_skb(skb);4707 return;4708 }4709 4710 mwl8k_txq_xmit(hw, index, control->sta, skb);4711}4712 4713static int mwl8k_start(struct ieee80211_hw *hw)4714{4715 struct mwl8k_priv *priv = hw->priv;4716 int rc;4717 4718 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,4719 IRQF_SHARED, MWL8K_NAME, hw);4720 if (rc) {4721 priv->irq = -1;4722 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");4723 return -EIO;4724 }4725 priv->irq = priv->pdev->irq;4726 4727 /* Enable TX reclaim and RX tasklets. */4728 tasklet_enable(&priv->poll_tx_task);4729 tasklet_enable(&priv->poll_rx_task);4730 4731 /* Enable interrupts */4732 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);4733 iowrite32(MWL8K_A2H_EVENTS,4734 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);4735 4736 rc = mwl8k_fw_lock(hw);4737 if (!rc) {4738 rc = mwl8k_cmd_radio_enable(hw);4739 4740 if (!priv->ap_fw) {4741 if (!rc)4742 rc = mwl8k_cmd_enable_sniffer(hw, 0);4743 4744 if (!rc)4745 rc = mwl8k_cmd_set_pre_scan(hw);4746 4747 if (!rc)4748 rc = mwl8k_cmd_set_post_scan(hw,4749 "\x00\x00\x00\x00\x00\x00");4750 }4751 4752 if (!rc)4753 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);4754 4755 if (!rc)4756 rc = mwl8k_cmd_set_wmm_mode(hw, 0);4757 4758 mwl8k_fw_unlock(hw);4759 }4760 4761 if (rc) {4762 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);4763 free_irq(priv->pdev->irq, hw);4764 priv->irq = -1;4765 tasklet_disable(&priv->poll_tx_task);4766 tasklet_disable(&priv->poll_rx_task);4767 } else {4768 ieee80211_wake_queues(hw);4769 }4770 4771 return rc;4772}4773 4774static void mwl8k_stop(struct ieee80211_hw *hw, bool suspend)4775{4776 struct mwl8k_priv *priv = hw->priv;4777 int i;4778 4779 if (!priv->hw_restart_in_progress)4780 mwl8k_cmd_radio_disable(hw);4781 4782 ieee80211_stop_queues(hw);4783 4784 /* Disable interrupts */4785 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);4786 if (priv->irq != -1) {4787 free_irq(priv->pdev->irq, hw);4788 priv->irq = -1;4789 }4790 4791 /* Stop finalize join worker */4792 cancel_work_sync(&priv->finalize_join_worker);4793 cancel_work_sync(&priv->watchdog_ba_handle);4794 if (priv->beacon_skb != NULL)4795 dev_kfree_skb(priv->beacon_skb);4796 4797 /* Stop TX reclaim and RX tasklets. */4798 tasklet_disable(&priv->poll_tx_task);4799 tasklet_disable(&priv->poll_rx_task);4800 4801 /* Return all skbs to mac80211 */4802 for (i = 0; i < mwl8k_tx_queues(priv); i++)4803 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);4804}4805 4806static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);4807 4808static int mwl8k_add_interface(struct ieee80211_hw *hw,4809 struct ieee80211_vif *vif)4810{4811 struct mwl8k_priv *priv = hw->priv;4812 struct mwl8k_vif *mwl8k_vif;4813 u32 macids_supported;4814 int macid, rc;4815 struct mwl8k_device_info *di;4816 4817 /*4818 * Reject interface creation if sniffer mode is active, as4819 * STA operation is mutually exclusive with hardware sniffer4820 * mode. (Sniffer mode is only used on STA firmware.)4821 */4822 if (priv->sniffer_enabled) {4823 wiphy_info(hw->wiphy,4824 "unable to create STA interface because sniffer mode is enabled\n");4825 return -EINVAL;4826 }4827 4828 di = priv->device_info;4829 switch (vif->type) {4830 case NL80211_IFTYPE_AP:4831 if (!priv->ap_fw && di->fw_image_ap) {4832 /* we must load the ap fw to meet this request */4833 if (!list_empty(&priv->vif_list))4834 return -EBUSY;4835 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);4836 if (rc)4837 return rc;4838 }4839 macids_supported = priv->ap_macids_supported;4840 break;4841 case NL80211_IFTYPE_STATION:4842 if (priv->ap_fw && di->fw_image_sta) {4843 if (!list_empty(&priv->vif_list)) {4844 wiphy_warn(hw->wiphy, "AP interface is running.\n"4845 "Adding STA interface for WDS");4846 } else {4847 /* we must load the sta fw to4848 * meet this request.4849 */4850 rc = mwl8k_reload_firmware(hw,4851 di->fw_image_sta);4852 if (rc)4853 return rc;4854 }4855 }4856 macids_supported = priv->sta_macids_supported;4857 break;4858 default:4859 return -EINVAL;4860 }4861 4862 macid = ffs(macids_supported & ~priv->macids_used);4863 if (!macid--)4864 return -EBUSY;4865 4866 /* Setup driver private area. */4867 mwl8k_vif = MWL8K_VIF(vif);4868 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));4869 mwl8k_vif->vif = vif;4870 mwl8k_vif->macid = macid;4871 mwl8k_vif->seqno = 0;4872 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);4873 mwl8k_vif->is_hw_crypto_enabled = false;4874 4875 /* Set the mac address. */4876 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);4877 4878 if (vif->type == NL80211_IFTYPE_AP)4879 mwl8k_cmd_set_new_stn_add_self(hw, vif);4880 4881 priv->macids_used |= 1 << mwl8k_vif->macid;4882 list_add_tail(&mwl8k_vif->list, &priv->vif_list);4883 4884 return 0;4885}4886 4887static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)4888{4889 /* Has ieee80211_restart_hw re-added the removed interfaces? */4890 if (!priv->macids_used)4891 return;4892 4893 priv->macids_used &= ~(1 << vif->macid);4894 list_del(&vif->list);4895}4896 4897static void mwl8k_remove_interface(struct ieee80211_hw *hw,4898 struct ieee80211_vif *vif)4899{4900 struct mwl8k_priv *priv = hw->priv;4901 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);4902 4903 if (vif->type == NL80211_IFTYPE_AP)4904 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);4905 4906 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);4907 4908 mwl8k_remove_vif(priv, mwl8k_vif);4909}4910 4911static void mwl8k_hw_restart_work(struct work_struct *work)4912{4913 struct mwl8k_priv *priv =4914 container_of(work, struct mwl8k_priv, fw_reload);4915 struct ieee80211_hw *hw = priv->hw;4916 struct mwl8k_device_info *di;4917 int rc;4918 4919 /* If some command is waiting for a response, clear it */4920 if (priv->hostcmd_wait != NULL) {4921 complete(priv->hostcmd_wait);4922 priv->hostcmd_wait = NULL;4923 }4924 4925 priv->hw_restart_owner = current;4926 di = priv->device_info;4927 mwl8k_fw_lock(hw);4928 4929 if (priv->ap_fw)4930 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);4931 else4932 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);4933 4934 if (rc)4935 goto fail;4936 4937 priv->hw_restart_owner = NULL;4938 priv->hw_restart_in_progress = false;4939 4940 /*4941 * This unlock will wake up the queues and4942 * also opens the command path for other4943 * commands4944 */4945 mwl8k_fw_unlock(hw);4946 4947 ieee80211_restart_hw(hw);4948 4949 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");4950 4951 return;4952fail:4953 mwl8k_fw_unlock(hw);4954 4955 wiphy_err(hw->wiphy, "Firmware restart failed\n");4956}4957 4958static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)4959{4960 struct ieee80211_conf *conf = &hw->conf;4961 struct mwl8k_priv *priv = hw->priv;4962 int rc;4963 4964 rc = mwl8k_fw_lock(hw);4965 if (rc)4966 return rc;4967 4968 if (conf->flags & IEEE80211_CONF_IDLE)4969 rc = mwl8k_cmd_radio_disable(hw);4970 else4971 rc = mwl8k_cmd_radio_enable(hw);4972 if (rc)4973 goto out;4974 4975 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {4976 rc = mwl8k_cmd_set_rf_channel(hw, conf);4977 if (rc)4978 goto out;4979 }4980 4981 if (conf->power_level > 18)4982 conf->power_level = 18;4983 4984 if (priv->ap_fw) {4985 4986 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {4987 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);4988 if (rc)4989 goto out;4990 }4991 4992 4993 } else {4994 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);4995 if (rc)4996 goto out;4997 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);4998 }4999 5000out:5001 mwl8k_fw_unlock(hw);5002 5003 return rc;5004}5005 5006static void5007mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,5008 struct ieee80211_bss_conf *info, u32 changed)5009{5010 struct mwl8k_priv *priv = hw->priv;5011 u32 ap_legacy_rates = 0;5012 u8 ap_mcs_rates[16];5013 int rc;5014 5015 if (mwl8k_fw_lock(hw))5016 return;5017 5018 /*5019 * No need to capture a beacon if we're no longer associated.5020 */5021 if ((changed & BSS_CHANGED_ASSOC) && !vif->cfg.assoc)5022 priv->capture_beacon = false;5023 5024 /*5025 * Get the AP's legacy and MCS rates.5026 */5027 if (vif->cfg.assoc) {5028 struct ieee80211_sta *ap;5029 5030 rcu_read_lock();5031 5032 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);5033 if (ap == NULL) {5034 rcu_read_unlock();5035 goto out;5036 }5037 5038 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) {5039 ap_legacy_rates = ap->deflink.supp_rates[NL80211_BAND_2GHZ];5040 } else {5041 ap_legacy_rates =5042 ap->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;5043 }5044 memcpy(ap_mcs_rates, &ap->deflink.ht_cap.mcs, 16);5045 5046 rcu_read_unlock();5047 5048 if (changed & BSS_CHANGED_ASSOC) {5049 if (!priv->ap_fw) {5050 rc = mwl8k_cmd_set_rate(hw, vif,5051 ap_legacy_rates,5052 ap_mcs_rates);5053 if (rc)5054 goto out;5055 5056 rc = mwl8k_cmd_use_fixed_rate_sta(hw);5057 if (rc)5058 goto out;5059 } else {5060 int idx;5061 int rate;5062 5063 /* Use AP firmware specific rate command.5064 */5065 idx = ffs(vif->bss_conf.basic_rates);5066 if (idx)5067 idx--;5068 5069 if (hw->conf.chandef.chan->band ==5070 NL80211_BAND_2GHZ)5071 rate = mwl8k_rates_24[idx].hw_value;5072 else5073 rate = mwl8k_rates_50[idx].hw_value;5074 5075 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);5076 }5077 }5078 }5079 5080 if (changed & BSS_CHANGED_ERP_PREAMBLE) {5081 rc = mwl8k_set_radio_preamble(hw,5082 vif->bss_conf.use_short_preamble);5083 if (rc)5084 goto out;5085 }5086 5087 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) {5088 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);5089 if (rc)5090 goto out;5091 }5092 5093 if (vif->cfg.assoc && !priv->ap_fw &&5094 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |5095 BSS_CHANGED_HT))) {5096 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);5097 if (rc)5098 goto out;5099 }5100 5101 if (vif->cfg.assoc &&5102 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {5103 /*5104 * Finalize the join. Tell rx handler to process5105 * next beacon from our BSSID.5106 */5107 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);5108 priv->capture_beacon = true;5109 }5110 5111out:5112 mwl8k_fw_unlock(hw);5113}5114 5115static void5116mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,5117 struct ieee80211_bss_conf *info, u32 changed)5118{5119 int rc;5120 5121 if (mwl8k_fw_lock(hw))5122 return;5123 5124 if (changed & BSS_CHANGED_ERP_PREAMBLE) {5125 rc = mwl8k_set_radio_preamble(hw,5126 vif->bss_conf.use_short_preamble);5127 if (rc)5128 goto out;5129 }5130 5131 if (changed & BSS_CHANGED_BASIC_RATES) {5132 int idx;5133 int rate;5134 5135 /*5136 * Use lowest supported basic rate for multicasts5137 * and management frames (such as probe responses --5138 * beacons will always go out at 1 Mb/s).5139 */5140 idx = ffs(vif->bss_conf.basic_rates);5141 if (idx)5142 idx--;5143 5144 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)5145 rate = mwl8k_rates_24[idx].hw_value;5146 else5147 rate = mwl8k_rates_50[idx].hw_value;5148 5149 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);5150 }5151 5152 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {5153 struct sk_buff *skb;5154 5155 skb = ieee80211_beacon_get(hw, vif, 0);5156 if (skb != NULL) {5157 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);5158 kfree_skb(skb);5159 }5160 }5161 5162 if (changed & BSS_CHANGED_BEACON_ENABLED)5163 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);5164 5165out:5166 mwl8k_fw_unlock(hw);5167}5168 5169static void5170mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,5171 struct ieee80211_bss_conf *info, u64 changed)5172{5173 if (vif->type == NL80211_IFTYPE_STATION)5174 mwl8k_bss_info_changed_sta(hw, vif, info, changed);5175 if (vif->type == NL80211_IFTYPE_AP)5176 mwl8k_bss_info_changed_ap(hw, vif, info, changed);5177}5178 5179static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,5180 struct netdev_hw_addr_list *mc_list)5181{5182 struct mwl8k_cmd_pkt_hdr *cmd;5183 5184 /*5185 * Synthesize and return a command packet that programs the5186 * hardware multicast address filter. At this point we don't5187 * know whether FIF_ALLMULTI is being requested, but if it is,5188 * we'll end up throwing this packet away and creating a new5189 * one in mwl8k_configure_filter().5190 */5191 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);5192 5193 return (unsigned long)cmd;5194}5195 5196static int5197mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,5198 unsigned int changed_flags,5199 unsigned int *total_flags)5200{5201 struct mwl8k_priv *priv = hw->priv;5202 5203 /*5204 * Hardware sniffer mode is mutually exclusive with STA5205 * operation, so refuse to enable sniffer mode if a STA5206 * interface is active.5207 */5208 if (!list_empty(&priv->vif_list)) {5209 if (net_ratelimit())5210 wiphy_info(hw->wiphy,5211 "not enabling sniffer mode because STA interface is active\n");5212 return 0;5213 }5214 5215 if (!priv->sniffer_enabled) {5216 if (mwl8k_cmd_enable_sniffer(hw, 1))5217 return 0;5218 priv->sniffer_enabled = true;5219 }5220 5221 *total_flags &= FIF_ALLMULTI |5222 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |5223 FIF_OTHER_BSS;5224 5225 return 1;5226}5227 5228static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)5229{5230 if (!list_empty(&priv->vif_list))5231 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);5232 5233 return NULL;5234}5235 5236static void mwl8k_configure_filter(struct ieee80211_hw *hw,5237 unsigned int changed_flags,5238 unsigned int *total_flags,5239 u64 multicast)5240{5241 struct mwl8k_priv *priv = hw->priv;5242 struct mwl8k_cmd_pkt_hdr *cmd = (void *)(unsigned long)multicast;5243 5244 /*5245 * AP firmware doesn't allow fine-grained control over5246 * the receive filter.5247 */5248 if (priv->ap_fw) {5249 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;5250 kfree(cmd);5251 return;5252 }5253 5254 /*5255 * Enable hardware sniffer mode if FIF_CONTROL or5256 * FIF_OTHER_BSS is requested.5257 */5258 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&5259 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {5260 kfree(cmd);5261 return;5262 }5263 5264 /* Clear unsupported feature flags */5265 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;5266 5267 if (mwl8k_fw_lock(hw)) {5268 kfree(cmd);5269 return;5270 }5271 5272 if (priv->sniffer_enabled) {5273 mwl8k_cmd_enable_sniffer(hw, 0);5274 priv->sniffer_enabled = false;5275 }5276 5277 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {5278 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {5279 /*5280 * Disable the BSS filter.5281 */5282 mwl8k_cmd_set_pre_scan(hw);5283 } else {5284 struct mwl8k_vif *mwl8k_vif;5285 const u8 *bssid;5286 5287 /*5288 * Enable the BSS filter.5289 *5290 * If there is an active STA interface, use that5291 * interface's BSSID, otherwise use a dummy one5292 * (where the OUI part needs to be nonzero for5293 * the BSSID to be accepted by POST_SCAN).5294 */5295 mwl8k_vif = mwl8k_first_vif(priv);5296 if (mwl8k_vif != NULL)5297 bssid = mwl8k_vif->vif->bss_conf.bssid;5298 else5299 bssid = "\x01\x00\x00\x00\x00\x00";5300 5301 mwl8k_cmd_set_post_scan(hw, bssid);5302 }5303 }5304 5305 /*5306 * If FIF_ALLMULTI is being requested, throw away the command5307 * packet that ->prepare_multicast() built and replace it with5308 * a command packet that enables reception of all multicast5309 * packets.5310 */5311 if (*total_flags & FIF_ALLMULTI) {5312 kfree(cmd);5313 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);5314 }5315 5316 if (cmd != NULL) {5317 mwl8k_post_cmd(hw, cmd);5318 kfree(cmd);5319 }5320 5321 mwl8k_fw_unlock(hw);5322}5323 5324static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)5325{5326 return mwl8k_cmd_set_rts_threshold(hw, value);5327}5328 5329static int mwl8k_sta_remove(struct ieee80211_hw *hw,5330 struct ieee80211_vif *vif,5331 struct ieee80211_sta *sta)5332{5333 struct mwl8k_priv *priv = hw->priv;5334 5335 if (priv->ap_fw)5336 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);5337 else5338 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);5339}5340 5341static int mwl8k_sta_add(struct ieee80211_hw *hw,5342 struct ieee80211_vif *vif,5343 struct ieee80211_sta *sta)5344{5345 struct mwl8k_priv *priv = hw->priv;5346 int ret;5347 int i;5348 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);5349 struct ieee80211_key_conf *key;5350 5351 if (!priv->ap_fw) {5352 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);5353 if (ret >= 0) {5354 MWL8K_STA(sta)->peer_id = ret;5355 if (sta->deflink.ht_cap.ht_supported)5356 MWL8K_STA(sta)->is_ampdu_allowed = true;5357 ret = 0;5358 }5359 5360 } else {5361 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);5362 }5363 5364 for (i = 0; i < NUM_WEP_KEYS; i++) {5365 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);5366 if (mwl8k_vif->wep_key_conf[i].enabled)5367 mwl8k_set_key(hw, SET_KEY, vif, sta, key);5368 }5369 return ret;5370}5371 5372static int mwl8k_conf_tx(struct ieee80211_hw *hw,5373 struct ieee80211_vif *vif,5374 unsigned int link_id, u16 queue,5375 const struct ieee80211_tx_queue_params *params)5376{5377 struct mwl8k_priv *priv = hw->priv;5378 int rc;5379 5380 rc = mwl8k_fw_lock(hw);5381 if (!rc) {5382 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);5383 memcpy(&priv->wmm_params[queue], params, sizeof(*params));5384 5385 if (!priv->wmm_enabled)5386 rc = mwl8k_cmd_set_wmm_mode(hw, 1);5387 5388 if (!rc) {5389 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;5390 rc = mwl8k_cmd_set_edca_params(hw, q,5391 params->cw_min,5392 params->cw_max,5393 params->aifs,5394 params->txop);5395 }5396 5397 mwl8k_fw_unlock(hw);5398 }5399 5400 return rc;5401}5402 5403static int mwl8k_get_stats(struct ieee80211_hw *hw,5404 struct ieee80211_low_level_stats *stats)5405{5406 return mwl8k_cmd_get_stat(hw, stats);5407}5408 5409static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,5410 struct survey_info *survey)5411{5412 struct mwl8k_priv *priv = hw->priv;5413 struct ieee80211_conf *conf = &hw->conf;5414 struct ieee80211_supported_band *sband;5415 5416 if (priv->ap_fw) {5417 sband = hw->wiphy->bands[NL80211_BAND_2GHZ];5418 5419 if (sband && idx >= sband->n_channels) {5420 idx -= sband->n_channels;5421 sband = NULL;5422 }5423 5424 if (!sband)5425 sband = hw->wiphy->bands[NL80211_BAND_5GHZ];5426 5427 if (!sband || idx >= sband->n_channels)5428 return -ENOENT;5429 5430 memcpy(survey, &priv->survey[idx], sizeof(*survey));5431 survey->channel = &sband->channels[idx];5432 5433 return 0;5434 }5435 5436 if (idx != 0)5437 return -ENOENT;5438 5439 survey->channel = conf->chandef.chan;5440 survey->filled = SURVEY_INFO_NOISE_DBM;5441 survey->noise = priv->noise;5442 5443 return 0;5444}5445 5446#define MAX_AMPDU_ATTEMPTS 55447 5448static int5449mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,5450 struct ieee80211_ampdu_params *params)5451{5452 struct ieee80211_sta *sta = params->sta;5453 enum ieee80211_ampdu_mlme_action action = params->action;5454 u16 tid = params->tid;5455 u16 *ssn = ¶ms->ssn;5456 u8 buf_size = params->buf_size;5457 int i, rc = 0;5458 struct mwl8k_priv *priv = hw->priv;5459 struct mwl8k_ampdu_stream *stream;5460 u8 *addr = sta->addr, idx;5461 struct mwl8k_sta *sta_info = MWL8K_STA(sta);5462 5463 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION))5464 return -ENOTSUPP;5465 5466 spin_lock(&priv->stream_lock);5467 stream = mwl8k_lookup_stream(hw, addr, tid);5468 5469 switch (action) {5470 case IEEE80211_AMPDU_RX_START:5471 case IEEE80211_AMPDU_RX_STOP:5472 break;5473 case IEEE80211_AMPDU_TX_START:5474 /* By the time we get here the hw queues may contain outgoing5475 * packets for this RA/TID that are not part of this BA5476 * session. The hw will assign sequence numbers to these5477 * packets as they go out. So if we query the hw for its next5478 * sequence number and use that for the SSN here, it may end up5479 * being wrong, which will lead to sequence number mismatch at5480 * the recipient. To avoid this, we reset the sequence number5481 * to O for the first MPDU in this BA stream.5482 */5483 *ssn = 0;5484 if (stream == NULL) {5485 /* This means that somebody outside this driver called5486 * ieee80211_start_tx_ba_session. This is unexpected5487 * because we do our own rate control. Just warn and5488 * move on.5489 */5490 wiphy_warn(hw->wiphy, "Unexpected call to %s. "5491 "Proceeding anyway.\n", __func__);5492 stream = mwl8k_add_stream(hw, sta, tid);5493 }5494 if (stream == NULL) {5495 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");5496 rc = -EBUSY;5497 break;5498 }5499 stream->state = AMPDU_STREAM_IN_PROGRESS;5500 5501 /* Release the lock before we do the time consuming stuff */5502 spin_unlock(&priv->stream_lock);5503 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {5504 5505 /* Check if link is still valid */5506 if (!sta_info->is_ampdu_allowed) {5507 spin_lock(&priv->stream_lock);5508 mwl8k_remove_stream(hw, stream);5509 spin_unlock(&priv->stream_lock);5510 return -EBUSY;5511 }5512 5513 rc = mwl8k_check_ba(hw, stream, vif);5514 5515 /* If HW restart is in progress mwl8k_post_cmd will5516 * return -EBUSY. Avoid retrying mwl8k_check_ba in5517 * such cases5518 */5519 if (!rc || rc == -EBUSY)5520 break;5521 /*5522 * HW queues take time to be flushed, give them5523 * sufficient time5524 */5525 5526 msleep(1000);5527 }5528 spin_lock(&priv->stream_lock);5529 if (rc) {5530 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"5531 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);5532 mwl8k_remove_stream(hw, stream);5533 rc = -EBUSY;5534 break;5535 }5536 rc = IEEE80211_AMPDU_TX_START_IMMEDIATE;5537 break;5538 case IEEE80211_AMPDU_TX_STOP_CONT:5539 case IEEE80211_AMPDU_TX_STOP_FLUSH:5540 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:5541 if (stream) {5542 if (stream->state == AMPDU_STREAM_ACTIVE) {5543 idx = stream->idx;5544 spin_unlock(&priv->stream_lock);5545 mwl8k_destroy_ba(hw, idx);5546 spin_lock(&priv->stream_lock);5547 }5548 mwl8k_remove_stream(hw, stream);5549 }5550 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);5551 break;5552 case IEEE80211_AMPDU_TX_OPERATIONAL:5553 BUG_ON(stream == NULL);5554 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);5555 spin_unlock(&priv->stream_lock);5556 rc = mwl8k_create_ba(hw, stream, buf_size, vif);5557 spin_lock(&priv->stream_lock);5558 if (!rc)5559 stream->state = AMPDU_STREAM_ACTIVE;5560 else {5561 idx = stream->idx;5562 spin_unlock(&priv->stream_lock);5563 mwl8k_destroy_ba(hw, idx);5564 spin_lock(&priv->stream_lock);5565 wiphy_debug(hw->wiphy,5566 "Failed adding stream for sta %pM tid %d\n",5567 addr, tid);5568 mwl8k_remove_stream(hw, stream);5569 }5570 break;5571 5572 default:5573 rc = -ENOTSUPP;5574 }5575 5576 spin_unlock(&priv->stream_lock);5577 return rc;5578}5579 5580static void mwl8k_sw_scan_start(struct ieee80211_hw *hw,5581 struct ieee80211_vif *vif,5582 const u8 *mac_addr)5583{5584 struct mwl8k_priv *priv = hw->priv;5585 u8 tmp;5586 5587 if (!priv->ap_fw)5588 return;5589 5590 /* clear all stats */5591 priv->channel_time = 0;5592 ioread32(priv->regs + BBU_RXRDY_CNT_REG);5593 ioread32(priv->regs + NOK_CCA_CNT_REG);5594 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);5595 5596 priv->sw_scan_start = true;5597}5598 5599static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw,5600 struct ieee80211_vif *vif)5601{5602 struct mwl8k_priv *priv = hw->priv;5603 u8 tmp;5604 5605 if (!priv->ap_fw)5606 return;5607 5608 priv->sw_scan_start = false;5609 5610 /* clear all stats */5611 priv->channel_time = 0;5612 ioread32(priv->regs + BBU_RXRDY_CNT_REG);5613 ioread32(priv->regs + NOK_CCA_CNT_REG);5614 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);5615}5616 5617static const struct ieee80211_ops mwl8k_ops = {5618 .add_chanctx = ieee80211_emulate_add_chanctx,5619 .remove_chanctx = ieee80211_emulate_remove_chanctx,5620 .change_chanctx = ieee80211_emulate_change_chanctx,5621 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,5622 .tx = mwl8k_tx,5623 .wake_tx_queue = ieee80211_handle_wake_tx_queue,5624 .start = mwl8k_start,5625 .stop = mwl8k_stop,5626 .add_interface = mwl8k_add_interface,5627 .remove_interface = mwl8k_remove_interface,5628 .config = mwl8k_config,5629 .bss_info_changed = mwl8k_bss_info_changed,5630 .prepare_multicast = mwl8k_prepare_multicast,5631 .configure_filter = mwl8k_configure_filter,5632 .set_key = mwl8k_set_key,5633 .set_rts_threshold = mwl8k_set_rts_threshold,5634 .sta_add = mwl8k_sta_add,5635 .sta_remove = mwl8k_sta_remove,5636 .conf_tx = mwl8k_conf_tx,5637 .get_stats = mwl8k_get_stats,5638 .get_survey = mwl8k_get_survey,5639 .ampdu_action = mwl8k_ampdu_action,5640 .sw_scan_start = mwl8k_sw_scan_start,5641 .sw_scan_complete = mwl8k_sw_scan_complete,5642};5643 5644static void mwl8k_finalize_join_worker(struct work_struct *work)5645{5646 struct mwl8k_priv *priv =5647 container_of(work, struct mwl8k_priv, finalize_join_worker);5648 struct sk_buff *skb = priv->beacon_skb;5649 struct ieee80211_mgmt *mgmt = (void *)skb->data;5650 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);5651 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,5652 mgmt->u.beacon.variable, len);5653 int dtim_period = 1;5654 5655 if (tim && tim[1] >= 2)5656 dtim_period = tim[3];5657 5658 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);5659 5660 dev_kfree_skb(skb);5661 priv->beacon_skb = NULL;5662}5663 5664enum {5665 MWL8363 = 0,5666 MWL8687,5667 MWL8366,5668 MWL8764,5669};5670 5671#define MWL8K_8366_AP_FW_API 35672#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"5673#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)5674 5675#define MWL8K_8764_AP_FW_API 15676#define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"5677#define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)5678 5679static struct mwl8k_device_info mwl8k_info_tbl[] = {5680 [MWL8363] = {5681 .part_name = "88w8363",5682 .helper_image = "mwl8k/helper_8363.fw",5683 .fw_image_sta = "mwl8k/fmimage_8363.fw",5684 },5685 [MWL8687] = {5686 .part_name = "88w8687",5687 .helper_image = "mwl8k/helper_8687.fw",5688 .fw_image_sta = "mwl8k/fmimage_8687.fw",5689 },5690 [MWL8366] = {5691 .part_name = "88w8366",5692 .helper_image = "mwl8k/helper_8366.fw",5693 .fw_image_sta = "mwl8k/fmimage_8366.fw",5694 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),5695 .fw_api_ap = MWL8K_8366_AP_FW_API,5696 .ap_rxd_ops = &rxd_ap_ops,5697 },5698 [MWL8764] = {5699 .part_name = "88w8764",5700 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),5701 .fw_api_ap = MWL8K_8764_AP_FW_API,5702 .ap_rxd_ops = &rxd_ap_ops,5703 },5704};5705 5706MODULE_FIRMWARE("mwl8k/helper_8363.fw");5707MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");5708MODULE_FIRMWARE("mwl8k/helper_8687.fw");5709MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");5710MODULE_FIRMWARE("mwl8k/helper_8366.fw");5711MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");5712MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));5713 5714static const struct pci_device_id mwl8k_pci_id_table[] = {5715 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },5716 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },5717 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },5718 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },5719 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },5720 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },5721 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },5722 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },5723 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },5724 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },5725 { },5726};5727MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);5728 5729static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)5730{5731 int rc;5732 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"5733 "Trying alternative firmware %s\n", pci_name(priv->pdev),5734 priv->fw_pref, priv->fw_alt);5735 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);5736 if (rc) {5737 printk(KERN_ERR "%s: Error requesting alt fw %s\n",5738 pci_name(priv->pdev), priv->fw_alt);5739 return rc;5740 }5741 return 0;5742}5743 5744static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);5745static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)5746{5747 struct mwl8k_priv *priv = context;5748 struct mwl8k_device_info *di = priv->device_info;5749 int rc;5750 5751 switch (priv->fw_state) {5752 case FW_STATE_INIT:5753 if (!fw) {5754 printk(KERN_ERR "%s: Error requesting helper fw %s\n",5755 pci_name(priv->pdev), di->helper_image);5756 goto fail;5757 }5758 priv->fw_helper = fw;5759 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,5760 true);5761 if (rc && priv->fw_alt) {5762 rc = mwl8k_request_alt_fw(priv);5763 if (rc)5764 goto fail;5765 priv->fw_state = FW_STATE_LOADING_ALT;5766 } else if (rc)5767 goto fail;5768 else5769 priv->fw_state = FW_STATE_LOADING_PREF;5770 break;5771 5772 case FW_STATE_LOADING_PREF:5773 if (!fw) {5774 if (priv->fw_alt) {5775 rc = mwl8k_request_alt_fw(priv);5776 if (rc)5777 goto fail;5778 priv->fw_state = FW_STATE_LOADING_ALT;5779 } else5780 goto fail;5781 } else {5782 priv->fw_ucode = fw;5783 rc = mwl8k_firmware_load_success(priv);5784 if (rc)5785 goto fail;5786 else5787 complete(&priv->firmware_loading_complete);5788 }5789 break;5790 5791 case FW_STATE_LOADING_ALT:5792 if (!fw) {5793 printk(KERN_ERR "%s: Error requesting alt fw %s\n",5794 pci_name(priv->pdev), di->helper_image);5795 goto fail;5796 }5797 priv->fw_ucode = fw;5798 rc = mwl8k_firmware_load_success(priv);5799 if (rc)5800 goto fail;5801 else5802 complete(&priv->firmware_loading_complete);5803 break;5804 5805 default:5806 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",5807 MWL8K_NAME, priv->fw_state);5808 BUG_ON(1);5809 }5810 5811 return;5812 5813fail:5814 priv->fw_state = FW_STATE_ERROR;5815 complete(&priv->firmware_loading_complete);5816 mwl8k_release_firmware(priv);5817 device_release_driver(&priv->pdev->dev);5818}5819 5820#define MAX_RESTART_ATTEMPTS 15821static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,5822 bool nowait)5823{5824 struct mwl8k_priv *priv = hw->priv;5825 int rc;5826 int count = MAX_RESTART_ATTEMPTS;5827 5828retry:5829 /* Reset firmware and hardware */5830 mwl8k_hw_reset(priv);5831 5832 /* Ask userland hotplug daemon for the device firmware */5833 rc = mwl8k_request_firmware(priv, fw_image, nowait);5834 if (rc) {5835 wiphy_err(hw->wiphy, "Firmware files not found\n");5836 return rc;5837 }5838 5839 if (nowait)5840 return rc;5841 5842 /* Load firmware into hardware */5843 rc = mwl8k_load_firmware(hw);5844 if (rc)5845 wiphy_err(hw->wiphy, "Cannot start firmware\n");5846 5847 /* Reclaim memory once firmware is successfully loaded */5848 mwl8k_release_firmware(priv);5849 5850 if (rc && count) {5851 /* FW did not start successfully;5852 * lets try one more time5853 */5854 count--;5855 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");5856 msleep(20);5857 goto retry;5858 }5859 5860 return rc;5861}5862 5863static int mwl8k_init_txqs(struct ieee80211_hw *hw)5864{5865 struct mwl8k_priv *priv = hw->priv;5866 int rc = 0;5867 int i;5868 5869 for (i = 0; i < mwl8k_tx_queues(priv); i++) {5870 rc = mwl8k_txq_init(hw, i);5871 if (rc)5872 break;5873 if (priv->ap_fw)5874 iowrite32(priv->txq[i].txd_dma,5875 priv->sram + priv->txq_offset[i]);5876 }5877 return rc;5878}5879 5880/* initialize hw after successfully loading a firmware image */5881static int mwl8k_probe_hw(struct ieee80211_hw *hw)5882{5883 struct mwl8k_priv *priv = hw->priv;5884 int rc = 0;5885 int i;5886 5887 if (priv->ap_fw) {5888 priv->rxd_ops = priv->device_info->ap_rxd_ops;5889 if (priv->rxd_ops == NULL) {5890 wiphy_err(hw->wiphy,5891 "Driver does not have AP firmware image support for this hardware\n");5892 rc = -ENOENT;5893 goto err_stop_firmware;5894 }5895 } else {5896 priv->rxd_ops = &rxd_sta_ops;5897 }5898 5899 priv->sniffer_enabled = false;5900 priv->wmm_enabled = false;5901 priv->pending_tx_pkts = 0;5902 atomic_set(&priv->watchdog_event_pending, 0);5903 5904 rc = mwl8k_rxq_init(hw, 0);5905 if (rc)5906 goto err_stop_firmware;5907 rxq_refill(hw, 0, INT_MAX);5908 5909 /* For the sta firmware, we need to know the dma addresses of tx queues5910 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them5911 * prior to issuing this command. But for the AP case, we learn the5912 * total number of queues from the result CMD_GET_HW_SPEC, so for this5913 * case we must initialize the tx queues after.5914 */5915 priv->num_ampdu_queues = 0;5916 if (!priv->ap_fw) {5917 rc = mwl8k_init_txqs(hw);5918 if (rc)5919 goto err_free_queues;5920 }5921 5922 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);5923 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);5924 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|5925 MWL8K_A2H_INT_BA_WATCHDOG,5926 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);5927 iowrite32(MWL8K_A2H_INT_OPC_DONE,5928 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);5929 5930 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,5931 IRQF_SHARED, MWL8K_NAME, hw);5932 if (rc) {5933 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");5934 goto err_free_queues;5935 }5936 5937 /*5938 * When hw restart is requested,5939 * mac80211 will take care of clearing5940 * the ampdu streams, so do not clear5941 * the ampdu state here5942 */5943 if (!priv->hw_restart_in_progress)5944 memset(priv->ampdu, 0, sizeof(priv->ampdu));5945 5946 /*5947 * Temporarily enable interrupts. Initial firmware host5948 * commands use interrupts and avoid polling. Disable5949 * interrupts when done.5950 */5951 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);5952 5953 /* Get config data, mac addrs etc */5954 if (priv->ap_fw) {5955 rc = mwl8k_cmd_get_hw_spec_ap(hw);5956 if (!rc)5957 rc = mwl8k_init_txqs(hw);5958 if (!rc)5959 rc = mwl8k_cmd_set_hw_spec(hw);5960 } else {5961 rc = mwl8k_cmd_get_hw_spec_sta(hw);5962 }5963 if (rc) {5964 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");5965 goto err_free_irq;5966 }5967 5968 /* Turn radio off */5969 rc = mwl8k_cmd_radio_disable(hw);5970 if (rc) {5971 wiphy_err(hw->wiphy, "Cannot disable\n");5972 goto err_free_irq;5973 }5974 5975 /* Clear MAC address */5976 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");5977 if (rc) {5978 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");5979 goto err_free_irq;5980 }5981 5982 /* Configure Antennas */5983 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);5984 if (rc)5985 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");5986 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);5987 if (rc)5988 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");5989 5990 5991 /* Disable interrupts */5992 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);5993 free_irq(priv->pdev->irq, hw);5994 5995 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",5996 priv->device_info->part_name,5997 priv->hw_rev, hw->wiphy->perm_addr,5998 priv->ap_fw ? "AP" : "STA",5999 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,6000 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);6001 6002 return 0;6003 6004err_free_irq:6005 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);6006 free_irq(priv->pdev->irq, hw);6007 6008err_free_queues:6009 for (i = 0; i < mwl8k_tx_queues(priv); i++)6010 mwl8k_txq_deinit(hw, i);6011 mwl8k_rxq_deinit(hw, 0);6012 6013err_stop_firmware:6014 mwl8k_hw_reset(priv);6015 6016 return rc;6017}6018 6019/*6020 * invoke mwl8k_reload_firmware to change the firmware image after the device6021 * has already been registered6022 */6023static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)6024{6025 int i, rc = 0;6026 struct mwl8k_priv *priv = hw->priv;6027 struct mwl8k_vif *vif, *tmp_vif;6028 6029 mwl8k_stop(hw, false);6030 mwl8k_rxq_deinit(hw, 0);6031 6032 /*6033 * All the existing interfaces are re-added by the ieee80211_reconfig;6034 * which means driver should remove existing interfaces before calling6035 * ieee80211_restart_hw6036 */6037 if (priv->hw_restart_in_progress)6038 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)6039 mwl8k_remove_vif(priv, vif);6040 6041 for (i = 0; i < mwl8k_tx_queues(priv); i++)6042 mwl8k_txq_deinit(hw, i);6043 6044 rc = mwl8k_init_firmware(hw, fw_image, false);6045 if (rc)6046 goto fail;6047 6048 rc = mwl8k_probe_hw(hw);6049 if (rc)6050 goto fail;6051 6052 if (priv->hw_restart_in_progress)6053 return rc;6054 6055 rc = mwl8k_start(hw);6056 if (rc)6057 goto fail;6058 6059 rc = mwl8k_config(hw, ~0);6060 if (rc)6061 goto fail;6062 6063 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {6064 rc = mwl8k_conf_tx(hw, NULL, 0, i, &priv->wmm_params[i]);6065 if (rc)6066 goto fail;6067 }6068 6069 return rc;6070 6071fail:6072 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");6073 return rc;6074}6075 6076static const struct ieee80211_iface_limit ap_if_limits[] = {6077 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },6078 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },6079};6080 6081static const struct ieee80211_iface_combination ap_if_comb = {6082 .limits = ap_if_limits,6083 .n_limits = ARRAY_SIZE(ap_if_limits),6084 .max_interfaces = 8,6085 .num_different_channels = 1,6086};6087 6088 6089static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)6090{6091 struct ieee80211_hw *hw = priv->hw;6092 int i, rc;6093 6094 rc = mwl8k_load_firmware(hw);6095 mwl8k_release_firmware(priv);6096 if (rc) {6097 wiphy_err(hw->wiphy, "Cannot start firmware\n");6098 return rc;6099 }6100 6101 /*6102 * Extra headroom is the size of the required DMA header6103 * minus the size of the smallest 802.11 frame (CTS frame).6104 */6105 hw->extra_tx_headroom =6106 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);6107 6108 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;6109 6110 hw->queues = MWL8K_TX_WMM_QUEUES;6111 6112 /* Set rssi values to dBm */6113 ieee80211_hw_set(hw, SIGNAL_DBM);6114 ieee80211_hw_set(hw, HAS_RATE_CONTROL);6115 6116 /*6117 * Ask mac80211 to not to trigger PS mode6118 * based on PM bit of incoming frames.6119 */6120 if (priv->ap_fw)6121 ieee80211_hw_set(hw, AP_LINK_PS);6122 6123 hw->vif_data_size = sizeof(struct mwl8k_vif);6124 hw->sta_data_size = sizeof(struct mwl8k_sta);6125 6126 priv->macids_used = 0;6127 INIT_LIST_HEAD(&priv->vif_list);6128 6129 /* Set default radio state and preamble */6130 priv->radio_on = false;6131 priv->radio_short_preamble = false;6132 6133 /* Finalize join worker */6134 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);6135 /* Handle watchdog ba events */6136 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);6137 /* To reload the firmware if it crashes */6138 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);6139 6140 /* TX reclaim and RX tasklets. */6141 tasklet_setup(&priv->poll_tx_task, mwl8k_tx_poll);6142 tasklet_disable(&priv->poll_tx_task);6143 tasklet_setup(&priv->poll_rx_task, mwl8k_rx_poll);6144 tasklet_disable(&priv->poll_rx_task);6145 6146 /* Power management cookie */6147 priv->cookie = dma_alloc_coherent(&priv->pdev->dev, 4,6148 &priv->cookie_dma, GFP_KERNEL);6149 if (priv->cookie == NULL)6150 return -ENOMEM;6151 6152 mutex_init(&priv->fw_mutex);6153 priv->fw_mutex_owner = NULL;6154 priv->fw_mutex_depth = 0;6155 priv->hostcmd_wait = NULL;6156 6157 spin_lock_init(&priv->tx_lock);6158 6159 spin_lock_init(&priv->stream_lock);6160 6161 priv->tx_wait = NULL;6162 6163 rc = mwl8k_probe_hw(hw);6164 if (rc)6165 goto err_free_cookie;6166 6167 hw->wiphy->interface_modes = 0;6168 6169 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {6170 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);6171 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);6172 hw->wiphy->iface_combinations = &ap_if_comb;6173 hw->wiphy->n_iface_combinations = 1;6174 }6175 6176 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)6177 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);6178 6179 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);6180 6181 rc = ieee80211_register_hw(hw);6182 if (rc) {6183 wiphy_err(hw->wiphy, "Cannot register device\n");6184 goto err_unprobe_hw;6185 }6186 6187 return 0;6188 6189err_unprobe_hw:6190 for (i = 0; i < mwl8k_tx_queues(priv); i++)6191 mwl8k_txq_deinit(hw, i);6192 mwl8k_rxq_deinit(hw, 0);6193 6194err_free_cookie:6195 if (priv->cookie != NULL)6196 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie,6197 priv->cookie_dma);6198 6199 return rc;6200}6201static int mwl8k_probe(struct pci_dev *pdev,6202 const struct pci_device_id *id)6203{6204 static int printed_version;6205 struct ieee80211_hw *hw;6206 struct mwl8k_priv *priv;6207 struct mwl8k_device_info *di;6208 int rc;6209 6210 if (!printed_version) {6211 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);6212 printed_version = 1;6213 }6214 6215 6216 rc = pci_enable_device(pdev);6217 if (rc) {6218 printk(KERN_ERR "%s: Cannot enable new PCI device\n",6219 MWL8K_NAME);6220 return rc;6221 }6222 6223 rc = pci_request_regions(pdev, MWL8K_NAME);6224 if (rc) {6225 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",6226 MWL8K_NAME);6227 goto err_disable_device;6228 }6229 6230 pci_set_master(pdev);6231 6232 6233 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);6234 if (hw == NULL) {6235 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);6236 rc = -ENOMEM;6237 goto err_free_reg;6238 }6239 6240 SET_IEEE80211_DEV(hw, &pdev->dev);6241 pci_set_drvdata(pdev, hw);6242 6243 priv = hw->priv;6244 priv->hw = hw;6245 priv->pdev = pdev;6246 priv->device_info = &mwl8k_info_tbl[id->driver_data];6247 6248 if (id->driver_data == MWL8764)6249 priv->is_8764 = true;6250 6251 priv->sram = pci_iomap(pdev, 0, 0x10000);6252 if (priv->sram == NULL) {6253 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");6254 rc = -EIO;6255 goto err_iounmap;6256 }6257 6258 /*6259 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.6260 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.6261 */6262 priv->regs = pci_iomap(pdev, 1, 0x10000);6263 if (priv->regs == NULL) {6264 priv->regs = pci_iomap(pdev, 2, 0x10000);6265 if (priv->regs == NULL) {6266 wiphy_err(hw->wiphy, "Cannot map device registers\n");6267 rc = -EIO;6268 goto err_iounmap;6269 }6270 }6271 6272 /*6273 * Choose the initial fw image depending on user input. If a second6274 * image is available, make it the alternative image that will be6275 * loaded if the first one fails.6276 */6277 init_completion(&priv->firmware_loading_complete);6278 di = priv->device_info;6279 if (ap_mode_default && di->fw_image_ap) {6280 priv->fw_pref = di->fw_image_ap;6281 priv->fw_alt = di->fw_image_sta;6282 } else if (!ap_mode_default && di->fw_image_sta) {6283 priv->fw_pref = di->fw_image_sta;6284 priv->fw_alt = di->fw_image_ap;6285 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {6286 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");6287 priv->fw_pref = di->fw_image_sta;6288 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {6289 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");6290 priv->fw_pref = di->fw_image_ap;6291 }6292 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);6293 if (rc)6294 goto err_stop_firmware;6295 6296 priv->hw_restart_in_progress = false;6297 6298 priv->running_bsses = 0;6299 6300 return rc;6301 6302err_stop_firmware:6303 mwl8k_hw_reset(priv);6304 6305err_iounmap:6306 if (priv->regs != NULL)6307 pci_iounmap(pdev, priv->regs);6308 6309 if (priv->sram != NULL)6310 pci_iounmap(pdev, priv->sram);6311 6312 ieee80211_free_hw(hw);6313 6314err_free_reg:6315 pci_release_regions(pdev);6316 6317err_disable_device:6318 pci_disable_device(pdev);6319 6320 return rc;6321}6322 6323static void mwl8k_remove(struct pci_dev *pdev)6324{6325 struct ieee80211_hw *hw = pci_get_drvdata(pdev);6326 struct mwl8k_priv *priv;6327 int i;6328 6329 if (hw == NULL)6330 return;6331 priv = hw->priv;6332 6333 wait_for_completion(&priv->firmware_loading_complete);6334 6335 if (priv->fw_state == FW_STATE_ERROR) {6336 mwl8k_hw_reset(priv);6337 goto unmap;6338 }6339 6340 ieee80211_stop_queues(hw);6341 6342 ieee80211_unregister_hw(hw);6343 6344 /* Remove TX reclaim and RX tasklets. */6345 tasklet_kill(&priv->poll_tx_task);6346 tasklet_kill(&priv->poll_rx_task);6347 6348 /* Stop hardware */6349 mwl8k_hw_reset(priv);6350 6351 /* Return all skbs to mac80211 */6352 for (i = 0; i < mwl8k_tx_queues(priv); i++)6353 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);6354 6355 for (i = 0; i < mwl8k_tx_queues(priv); i++)6356 mwl8k_txq_deinit(hw, i);6357 6358 mwl8k_rxq_deinit(hw, 0);6359 6360 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, priv->cookie_dma);6361 6362unmap:6363 pci_iounmap(pdev, priv->regs);6364 pci_iounmap(pdev, priv->sram);6365 ieee80211_free_hw(hw);6366 pci_release_regions(pdev);6367 pci_disable_device(pdev);6368}6369 6370static struct pci_driver mwl8k_driver = {6371 .name = MWL8K_NAME,6372 .id_table = mwl8k_pci_id_table,6373 .probe = mwl8k_probe,6374 .remove = mwl8k_remove,6375};6376 6377module_pci_driver(mwl8k_driver);6378 6379MODULE_DESCRIPTION(MWL8K_DESC);6380MODULE_VERSION(MWL8K_VERSION);6381MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");6382MODULE_LICENSE("GPL");6383