/* * Copyright (c) 2010 Broadcom Corporation * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #define __UNDEF_NO_VERSION__ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "phy/wlc_phy_int.h" #include "d11.h" #include "wlc_types.h" #include "wlc_cfg.h" #include "phy/phy_version.h" #include "wlc_key.h" #include "wlc_channel.h" #include "wlc_scb.h" #include "wlc_pub.h" #include "wl_dbg.h" #include "wl_export.h" #include "wl_ucode.h" #include "wl_mac80211.h" #define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */ static void wl_timer(unsigned long data); static void _wl_timer(struct wl_timer *t); static int ieee_hw_init(struct ieee80211_hw *hw); static int ieee_hw_rate_init(struct ieee80211_hw *hw); static int wl_linux_watchdog(void *ctx); /* Flags we support */ #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \ FIF_ALLMULTI | \ FIF_FCSFAIL | \ FIF_PLCPFAIL | \ FIF_CONTROL | \ FIF_OTHER_BSS | \ FIF_BCN_PRBRESP_PROMISC) static int wl_found; #define WL_DEV_IF(dev) ((struct wl_if *)netdev_priv(dev)) #define WL_INFO(dev) ((struct wl_info *)(WL_DEV_IF(dev)->wl)) static int wl_request_fw(struct wl_info *wl, struct pci_dev *pdev); static void wl_release_fw(struct wl_info *wl); /* local prototypes */ static void wl_dpc(unsigned long data); static irqreturn_t wl_isr(int irq, void *dev_id); static int __devinit wl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent); static void wl_remove(struct pci_dev *pdev); static void wl_free(struct wl_info *wl); static void wl_set_basic_rate(struct wl_rateset *rs, u16 rate, bool is_br); MODULE_AUTHOR("Broadcom Corporation"); MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver."); MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards"); MODULE_LICENSE("Dual BSD/GPL"); /* recognized PCI IDs */ static struct pci_device_id wl_id_table[] = { {PCI_VENDOR_ID_BROADCOM, 0x4357, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, /* 43225 2G */ {PCI_VENDOR_ID_BROADCOM, 0x4353, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, /* 43224 DUAL */ {PCI_VENDOR_ID_BROADCOM, 0x4727, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, /* 4313 DUAL */ {0} }; MODULE_DEVICE_TABLE(pci, wl_id_table); #ifdef BCMDBG static int msglevel = 0xdeadbeef; module_param(msglevel, int, 0); static int phymsglevel = 0xdeadbeef; module_param(phymsglevel, int, 0); #endif /* BCMDBG */ #define HW_TO_WL(hw) (hw->priv) #define WL_TO_HW(wl) (wl->pub->ieee_hw) /* MAC80211 callback functions */ static int wl_ops_start(struct ieee80211_hw *hw); static void wl_ops_stop(struct ieee80211_hw *hw); static int wl_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif); static void wl_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif); static int wl_ops_config(struct ieee80211_hw *hw, u32 changed); static void wl_ops_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *info, u32 changed); static void wl_ops_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *total_flags, u64 multicast); static int wl_ops_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set); static void wl_ops_sw_scan_start(struct ieee80211_hw *hw); static void wl_ops_sw_scan_complete(struct ieee80211_hw *hw); static void wl_ops_set_tsf(struct ieee80211_hw *hw, u64 tsf); static int wl_ops_get_stats(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats); static void wl_ops_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum sta_notify_cmd cmd, struct ieee80211_sta *sta); static int wl_ops_conf_tx(struct ieee80211_hw *hw, u16 queue, const struct ieee80211_tx_queue_params *params); static u64 wl_ops_get_tsf(struct ieee80211_hw *hw); static int wl_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta); static int wl_ops_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta); static int wl_ops_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum ieee80211_ampdu_mlme_action action, struct ieee80211_sta *sta, u16 tid, u16 *ssn, u8 buf_size); static void wl_ops_rfkill_poll(struct ieee80211_hw *hw); static void wl_ops_flush(struct ieee80211_hw *hw, bool drop); static void wl_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb) { struct wl_info *wl = hw->priv; WL_LOCK(wl); if (!wl->pub->up) { wiphy_err(wl->wiphy, "ops->tx called while down\n"); kfree_skb(skb); goto done; } wlc_sendpkt_mac80211(wl->wlc, skb, hw); done: WL_UNLOCK(wl); } static int wl_ops_start(struct ieee80211_hw *hw) { struct wl_info *wl = hw->priv; bool blocked; /* struct ieee80211_channel *curchan = hw->conf.channel; */ ieee80211_wake_queues(hw); WL_LOCK(wl); blocked = wl_rfkill_set_hw_state(wl); WL_UNLOCK(wl); if (!blocked) wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); return 0; } static void wl_ops_stop(struct ieee80211_hw *hw) { ieee80211_stop_queues(hw); } static int wl_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct wl_info *wl; int err; /* Just STA for now */ if (vif->type != NL80211_IFTYPE_AP && vif->type != NL80211_IFTYPE_MESH_POINT && vif->type != NL80211_IFTYPE_STATION && vif->type != NL80211_IFTYPE_WDS && vif->type != NL80211_IFTYPE_ADHOC) { wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only" " STA for now\n", __func__, vif->type); return -EOPNOTSUPP; } wl = HW_TO_WL(hw); WL_LOCK(wl); err = wl_up(wl); WL_UNLOCK(wl); if (err != 0) { wiphy_err(hw->wiphy, "%s: wl_up() returned %d\n", __func__, err); } return err; } static void wl_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct wl_info *wl; wl = HW_TO_WL(hw); /* put driver in down state */ WL_LOCK(wl); wl_down(wl); WL_UNLOCK(wl); } /* * precondition: perimeter lock has been acquired */ static int ieee_set_channel(struct ieee80211_hw *hw, struct ieee80211_channel *chan, enum nl80211_channel_type type) { struct wl_info *wl = HW_TO_WL(hw); int err = 0; switch (type) { case NL80211_CHAN_HT20: case NL80211_CHAN_NO_HT: err = wlc_set(wl->wlc, WLC_SET_CHANNEL, chan->hw_value); break; case NL80211_CHAN_HT40MINUS: case NL80211_CHAN_HT40PLUS: wiphy_err(hw->wiphy, "%s: Need to implement 40 Mhz Channels!\n", __func__); err = 1; break; } if (err) return -EIO; return err; } static int wl_ops_config(struct ieee80211_hw *hw, u32 changed) { struct ieee80211_conf *conf = &hw->conf; struct wl_info *wl = HW_TO_WL(hw); int err = 0; int new_int; struct wiphy *wiphy = hw->wiphy; WL_LOCK(wl); if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) { if (wlc_iovar_setint (wl->wlc, "bcn_li_bcn", conf->listen_interval)) { wiphy_err(wiphy, "%s: Error setting listen_interval\n", __func__); err = -EIO; goto config_out; } wlc_iovar_getint(wl->wlc, "bcn_li_bcn", &new_int); } if (changed & IEEE80211_CONF_CHANGE_MONITOR) wiphy_err(wiphy, "%s: change monitor mode: %s (implement)\n", __func__, conf->flags & IEEE80211_CONF_MONITOR ? "true" : "false"); if (changed & IEEE80211_CONF_CHANGE_PS) wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n", __func__, conf->flags & IEEE80211_CONF_PS ? "true" : "false"); if (changed & IEEE80211_CONF_CHANGE_POWER) { if (wlc_iovar_setint (wl->wlc, "qtxpower", conf->power_level * 4)) { wiphy_err(wiphy, "%s: Error setting power_level\n", __func__); err = -EIO; goto config_out; } wlc_iovar_getint(wl->wlc, "qtxpower", &new_int); if (new_int != (conf->power_level * 4)) wiphy_err(wiphy, "%s: Power level req != actual, %d %d" "\n", __func__, conf->power_level * 4, new_int); } if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { err = ieee_set_channel(hw, conf->channel, conf->channel_type); } if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { if (wlc_set (wl->wlc, WLC_SET_SRL, conf->short_frame_max_tx_count) < 0) { wiphy_err(wiphy, "%s: Error setting srl\n", __func__); err = -EIO; goto config_out; } if (wlc_set(wl->wlc, WLC_SET_LRL, conf->long_frame_max_tx_count) < 0) { wiphy_err(wiphy, "%s: Error setting lrl\n", __func__); err = -EIO; goto config_out; } } config_out: WL_UNLOCK(wl); return err; } static void wl_ops_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *info, u32 changed) { struct wl_info *wl = HW_TO_WL(hw); struct wiphy *wiphy = hw->wiphy; int val; if (changed & BSS_CHANGED_ASSOC) { /* association status changed (associated/disassociated) * also implies a change in the AID. */ wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME, __func__, info->assoc ? "" : "dis"); WL_LOCK(wl); wlc_associate_upd(wl->wlc, info->assoc); WL_UNLOCK(wl); } if (changed & BSS_CHANGED_ERP_SLOT) { /* slot timing changed */ if (info->use_short_slot) val = 1; else val = 0; WL_LOCK(wl); wlc_set(wl->wlc, WLC_SET_SHORTSLOT_OVERRIDE, val); WL_UNLOCK(wl); } if (changed & BSS_CHANGED_HT) { /* 802.11n parameters changed */ u16 mode = info->ht_operation_mode; WL_LOCK(wl); wlc_protection_upd(wl->wlc, WLC_PROT_N_CFG, mode & IEEE80211_HT_OP_MODE_PROTECTION); wlc_protection_upd(wl->wlc, WLC_PROT_N_NONGF, mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); wlc_protection_upd(wl->wlc, WLC_PROT_N_OBSS, mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT); WL_UNLOCK(wl); } if (changed & BSS_CHANGED_BASIC_RATES) { struct ieee80211_supported_band *bi; u32 br_mask, i; u16 rate; struct wl_rateset rs; int error; /* retrieve the current rates */ WL_LOCK(wl); error = wlc_ioctl(wl->wlc, WLC_GET_CURR_RATESET, &rs, sizeof(rs), NULL); WL_UNLOCK(wl); if (error) { wiphy_err(wiphy, "%s: retrieve rateset failed: %d\n", __func__, error); return; } br_mask = info->basic_rates; bi = hw->wiphy->bands[wlc_get_curband(wl->wlc)]; for (i = 0; i < bi->n_bitrates; i++) { /* convert to internal rate value */ rate = (bi->bitrates[i].bitrate << 1) / 10; /* set/clear basic rate flag */ wl_set_basic_rate(&rs, rate, br_mask & 1); br_mask >>= 1; } /* update the rate set */ WL_LOCK(wl); wlc_ioctl(wl->wlc, WLC_SET_RATESET, &rs, sizeof(rs), NULL); WL_UNLOCK(wl); } if (changed & BSS_CHANGED_BEACON_INT) { /* Beacon interval changed */ WL_LOCK(wl); wlc_set(wl->wlc, WLC_SET_BCNPRD, info->beacon_int); WL_UNLOCK(wl); } if (changed & BSS_CHANGED_BSSID) { /* BSSID changed, for whatever reason (IBSS and managed mode) */ WL_LOCK(wl); wlc_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid); WL_UNLOCK(wl); } if (changed & BSS_CHANGED_BEACON) { /* Beacon data changed, retrieve new beacon (beaconing modes) */ wiphy_err(wiphy, "%s: beacon changed\n", __func__); } if (changed & BSS_CHANGED_BEACON_ENABLED) { /* Beaconing should be enabled/disabled (beaconing modes) */ wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__, info->enable_beacon ? "true" : "false"); } if (changed & BSS_CHANGED_CQM) { /* Connection quality monitor config changed */ wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d " " (implement)\n", __func__, info->cqm_rssi_thold, info->cqm_rssi_hyst); } if (changed & BSS_CHANGED_IBSS) { /* IBSS join status changed */ wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__, info->ibss_joined ? "true" : "false"); } if (changed & BSS_CHANGED_ARP_FILTER) { /* Hardware ARP filter address list or state changed */ wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d" " (implement)\n", __func__, info->arp_filter_enabled ? "true" : "false", info->arp_addr_cnt); } if (changed & BSS_CHANGED_QOS) { /* * QoS for this association was enabled/disabled. * Note that it is only ever disabled for station mode. */ wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__, info->qos ? "true" : "false"); } if (changed & BSS_CHANGED_IDLE) { /* Idle changed for this BSS/interface */ wiphy_err(wiphy, "%s: BSS idle: %s (implement)\n", __func__, info->idle ? "true" : "false"); } return; } static void wl_ops_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *total_flags, u64 multicast) { struct wl_info *wl = hw->priv; struct wiphy *wiphy = hw->wiphy; changed_flags &= MAC_FILTERS; *total_flags &= MAC_FILTERS; if (changed_flags & FIF_PROMISC_IN_BSS) wiphy_err(wiphy, "FIF_PROMISC_IN_BSS\n"); if (changed_flags & FIF_ALLMULTI) wiphy_err(wiphy, "FIF_ALLMULTI\n"); if (changed_flags & FIF_FCSFAIL) wiphy_err(wiphy, "FIF_FCSFAIL\n"); if (changed_flags & FIF_PLCPFAIL) wiphy_err(wiphy, "FIF_PLCPFAIL\n"); if (changed_flags & FIF_CONTROL) wiphy_err(wiphy, "FIF_CONTROL\n"); if (changed_flags & FIF_OTHER_BSS) wiphy_err(wiphy, "FIF_OTHER_BSS\n"); if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { WL_LOCK(wl); if (*total_flags & FIF_BCN_PRBRESP_PROMISC) { wl->pub->mac80211_state |= MAC80211_PROMISC_BCNS; wlc_mac_bcn_promisc_change(wl->wlc, 1); } else { wlc_mac_bcn_promisc_change(wl->wlc, 0); wl->pub->mac80211_state &= ~MAC80211_PROMISC_BCNS; } WL_UNLOCK(wl); } return; } static int wl_ops_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set) { return 0; } static void wl_ops_sw_scan_start(struct ieee80211_hw *hw) { struct wl_info *wl = hw->priv; WL_LOCK(wl); wlc_scan_start(wl->wlc); WL_UNLOCK(wl); return; } static void wl_ops_sw_scan_complete(struct ieee80211_hw *hw) { struct wl_info *wl = hw->priv; WL_LOCK(wl); wlc_scan_stop(wl->wlc); WL_UNLOCK(wl); return; } static void wl_ops_set_tsf(struct ieee80211_hw *hw, u64 tsf) { wiphy_err(hw->wiphy, "%s: Enter\n", __func__); return; } static int wl_ops_get_stats(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats) { struct wl_info *wl = hw->priv; struct wl_cnt *cnt; WL_LOCK(wl); cnt = wl->pub->_cnt; stats->dot11ACKFailureCount = 0; stats->dot11RTSFailureCount = 0; stats->dot11FCSErrorCount = 0; stats->dot11RTSSuccessCount = 0; WL_UNLOCK(wl); return 0; } static void wl_ops_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum sta_notify_cmd cmd, struct ieee80211_sta *sta) { switch (cmd) { default: wiphy_err(hw->wiphy, "%s: Unknown cmd = %d\n", __func__, cmd); break; } return; } static int wl_ops_conf_tx(struct ieee80211_hw *hw, u16 queue, const struct ieee80211_tx_queue_params *params) { struct wl_info *wl = hw->priv; WL_LOCK(wl); wlc_wme_setparams(wl->wlc, queue, params, true); WL_UNLOCK(wl); return 0; } static u64 wl_ops_get_tsf(struct ieee80211_hw *hw) { wiphy_err(hw->wiphy, "%s: Enter\n", __func__); return 0; } static int wl_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct scb *scb; int i; struct wl_info *wl = hw->priv; /* Init the scb */ scb = (struct scb *)sta->drv_priv; memset(scb, 0, sizeof(struct scb)); for (i = 0; i < NUMPRIO; i++) scb->seqctl[i] = 0xFFFF; scb->seqctl_nonqos = 0xFFFF; scb->magic = SCB_MAGIC; wl->pub->global_scb = scb; wl->pub->global_ampdu = &(scb->scb_ampdu); wl->pub->global_ampdu->scb = scb; wl->pub->global_ampdu->max_pdu = 16; bcm_pktq_init(&scb->scb_ampdu.txq, AMPDU_MAX_SCB_TID, AMPDU_MAX_SCB_TID * PKTQ_LEN_DEFAULT); sta->ht_cap.ht_supported = true; sta->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; sta->ht_cap.ampdu_density = AMPDU_DEF_MPDU_DENSITY; sta->ht_cap.cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT; /* minstrel_ht initiates addBA on our behalf by calling ieee80211_start_tx_ba_session() */ return 0; } static int wl_ops_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { return 0; } static int wl_ops_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum ieee80211_ampdu_mlme_action action, struct ieee80211_sta *sta, u16 tid, u16 *ssn, u8 buf_size) { struct scb *scb = (struct scb *)sta->drv_priv; struct wl_info *wl = hw->priv; int status; if (WARN_ON(scb->magic != SCB_MAGIC)) return -EIDRM; switch (action) { case IEEE80211_AMPDU_RX_START: break; case IEEE80211_AMPDU_RX_STOP: break; case IEEE80211_AMPDU_TX_START: WL_LOCK(wl); status = wlc_aggregatable(wl->wlc, tid); WL_UNLOCK(wl); if (!status) { wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n", tid); return -EINVAL; } /* XXX: Use the starting sequence number provided ... */ *ssn = 0; ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); break; case IEEE80211_AMPDU_TX_STOP: WL_LOCK(wl); wlc_ampdu_flush(wl->wlc, sta, tid); WL_UNLOCK(wl); ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); break; case IEEE80211_AMPDU_TX_OPERATIONAL: /* Not sure what to do here */ /* Power save wakeup */ break; default: wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n", __func__); } return 0; } static void wl_ops_rfkill_poll(struct ieee80211_hw *hw) { struct wl_info *wl = HW_TO_WL(hw); bool blocked; WL_LOCK(wl); blocked = wlc_check_radio_disabled(wl->wlc); WL_UNLOCK(wl); wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); } static void wl_ops_flush(struct ieee80211_hw *hw, bool drop) { struct wl_info *wl = HW_TO_WL(hw); no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false"); /* wait for packet queue and dma fifos to run empty */ WL_LOCK(wl); wlc_wait_for_tx_completion(wl->wlc, drop); WL_UNLOCK(wl); } static const struct ieee80211_ops wl_ops = { .tx = wl_ops_tx, .start = wl_ops_start, .stop = wl_ops_stop, .add_interface = wl_ops_add_interface, .remove_interface = wl_ops_remove_interface, .config = wl_ops_config, .bss_info_changed = wl_ops_bss_info_changed, .configure_filter = wl_ops_configure_filter, .set_tim = wl_ops_set_tim, .sw_scan_start = wl_ops_sw_scan_start, .sw_scan_complete = wl_ops_sw_scan_complete, .set_tsf = wl_ops_set_tsf, .get_stats = wl_ops_get_stats, .sta_notify = wl_ops_sta_notify, .conf_tx = wl_ops_conf_tx, .get_tsf = wl_ops_get_tsf, .sta_add = wl_ops_sta_add, .sta_remove = wl_ops_sta_remove, .ampdu_action = wl_ops_ampdu_action, .rfkill_poll = wl_ops_rfkill_poll, .flush = wl_ops_flush, }; /* * is called in wl_pci_probe() context, therefore no locking required. */ static int wl_set_hint(struct wl_info *wl, char *abbrev) { return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev); } /** * attach to the WL device. * * Attach to the WL device identified by vendor and device parameters. * regs is a host accessible memory address pointing to WL device registers. * * wl_attach is not defined as static because in the case where no bus * is defined, wl_attach will never be called, and thus, gcc will issue * a warning that this function is defined but not used if we declare * it as static. * * * is called in wl_pci_probe() context, therefore no locking required. */ static struct wl_info *wl_attach(u16 vendor, u16 device, unsigned long regs, uint bustype, void *btparam, uint irq) { struct wl_info *wl = NULL; int unit, err; unsigned long base_addr; struct ieee80211_hw *hw; u8 perm[ETH_ALEN]; unit = wl_found; err = 0; if (unit < 0) { return NULL; } /* allocate private info */ hw = pci_get_drvdata(btparam); /* btparam == pdev */ if (hw != NULL) wl = hw->priv; if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL)) return NULL; wl->wiphy = hw->wiphy; atomic_set(&wl->callbacks, 0); /* setup the bottom half handler */ tasklet_init(&wl->tasklet, wl_dpc, (unsigned long) wl); base_addr = regs; if (bustype == PCI_BUS) { wl->piomode = false; } else if (bustype == RPC_BUS) { /* Do nothing */ } else { bustype = PCI_BUS; BCMMSG(wl->wiphy, "force to PCI\n"); } wl->bcm_bustype = bustype; wl->regsva = ioremap_nocache(base_addr, PCI_BAR0_WINSZ); if (wl->regsva == NULL) { wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit); goto fail; } spin_lock_init(&wl->lock); spin_lock_init(&wl->isr_lock); /* prepare ucode */ if (wl_request_fw(wl, (struct pci_dev *)btparam) < 0) { wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in " "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm"); wl_release_fw(wl); wl_remove((struct pci_dev *)btparam); return NULL; } /* common load-time initialization */ wl->wlc = wlc_attach((void *)wl, vendor, device, unit, wl->piomode, wl->regsva, wl->bcm_bustype, btparam, &err); wl_release_fw(wl); if (!wl->wlc) { wiphy_err(wl->wiphy, "%s: wlc_attach() failed with code %d\n", KBUILD_MODNAME, err); goto fail; } wl->pub = wlc_pub(wl->wlc); wl->pub->ieee_hw = hw; if (wlc_iovar_setint(wl->wlc, "mpc", 0)) { wiphy_err(wl->wiphy, "wl%d: Error setting MPC variable to 0\n", unit); } /* register our interrupt handler */ if (request_irq(irq, wl_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) { wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit); goto fail; } wl->irq = irq; /* register module */ wlc_module_register(wl->pub, NULL, "linux", wl, NULL, wl_linux_watchdog, NULL); if (ieee_hw_init(hw)) { wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit, __func__); goto fail; } memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN); if (WARN_ON(!is_valid_ether_addr(perm))) goto fail; SET_IEEE80211_PERM_ADDR(hw, perm); err = ieee80211_register_hw(hw); if (err) { wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status" "%d\n", __func__, err); } if (wl->pub->srom_ccode[0]) err = wl_set_hint(wl, wl->pub->srom_ccode); else err = wl_set_hint(wl, "US"); if (err) { wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n", __func__, err); } wl_found++; return wl; fail: wl_free(wl); return NULL; } #define CHAN2GHZ(channel, freqency, chflags) { \ .band = IEEE80211_BAND_2GHZ, \ .center_freq = (freqency), \ .hw_value = (channel), \ .flags = chflags, \ .max_antenna_gain = 0, \ .max_power = 19, \ } static struct ieee80211_channel wl_2ghz_chantable[] = { CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS), CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS), CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS), CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS), CHAN2GHZ(5, 2432, 0), CHAN2GHZ(6, 2437, 0), CHAN2GHZ(7, 2442, 0), CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS), CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS), CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS), CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS), CHAN2GHZ(12, 2467, IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_NO_HT40PLUS), CHAN2GHZ(13, 2472, IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_NO_HT40PLUS), CHAN2GHZ(14, 2484, IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) }; #define CHAN5GHZ(channel, chflags) { \ .band = IEEE80211_BAND_5GHZ, \ .center_freq = 5000 + 5*(channel), \ .hw_value = (channel), \ .flags = chflags, \ .max_antenna_gain = 0, \ .max_power = 21, \ } static struct ieee80211_channel wl_5ghz_nphy_chantable[] = { /* UNII-1 */ CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS), CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS), CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS), CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS), /* UNII-2 */ CHAN5GHZ(52, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), CHAN5GHZ(56, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), CHAN5GHZ(60, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), CHAN5GHZ(64, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), /* MID */ CHAN5GHZ(100, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), CHAN5GHZ(104, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), CHAN5GHZ(108, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), CHAN5GHZ(112, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), CHAN5GHZ(116, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), CHAN5GHZ(120, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), CHAN5GHZ(124, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), CHAN5GHZ(128, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), CHAN5GHZ(132, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS), CHAN5GHZ(136, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS), CHAN5GHZ(140, IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS), /* UNII-3 */ CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS), CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS), CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS), CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS), CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) }; #define RATE(rate100m, _flags) { \ .bitrate = (rate100m), \ .flags = (_flags), \ .hw_value = (rate100m / 5), \ } static struct ieee80211_rate wl_legacy_ratetable[] = { RATE(10, 0), RATE(20, IEEE80211_RATE_SHORT_PREAMBLE), RATE(55, IEEE80211_RATE_SHORT_PREAMBLE), RATE(110, IEEE80211_RATE_SHORT_PREAMBLE), RATE(60, 0), RATE(90, 0), RATE(120, 0), RATE(180, 0), RATE(240, 0), RATE(360, 0), RATE(480, 0), RATE(540, 0), }; static struct ieee80211_supported_band wl_band_2GHz_nphy = { .band = IEEE80211_BAND_2GHZ, .channels = wl_2ghz_chantable, .n_channels = ARRAY_SIZE(wl_2ghz_chantable), .bitrates = wl_legacy_ratetable, .n_bitrates = ARRAY_SIZE(wl_legacy_ratetable), .ht_cap = { /* from include/linux/ieee80211.h */ .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT, .ht_supported = true, .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, .ampdu_density = AMPDU_DEF_MPDU_DENSITY, .mcs = { /* placeholders for now */ .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, .rx_highest = 500, .tx_params = IEEE80211_HT_MCS_TX_DEFINED} } }; static struct ieee80211_supported_band wl_band_5GHz_nphy = { .band = IEEE80211_BAND_5GHZ, .channels = wl_5ghz_nphy_chantable, .n_channels = ARRAY_SIZE(wl_5ghz_nphy_chantable), .bitrates = wl_legacy_ratetable + 4, .n_bitrates = ARRAY_SIZE(wl_legacy_ratetable) - 4, .ht_cap = { /* use IEEE80211_HT_CAP_* from include/linux/ieee80211.h */ .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_40MHZ_INTOLERANT, /* No 40 mhz yet */ .ht_supported = true, .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, .ampdu_density = AMPDU_DEF_MPDU_DENSITY, .mcs = { /* placeholders for now */ .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, .rx_highest = 500, .tx_params = IEEE80211_HT_MCS_TX_DEFINED} } }; /* * is called in wl_pci_probe() context, therefore no locking required. */ static int ieee_hw_rate_init(struct ieee80211_hw *hw) { struct wl_info *wl = HW_TO_WL(hw); int has_5g; char phy_list[4]; has_5g = 0; hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; if (wlc_get(wl->wlc, WLC_GET_PHYLIST, (int *)&phy_list) < 0) { wiphy_err(hw->wiphy, "Phy list failed\n"); } if (phy_list[0] == 'n' || phy_list[0] == 'c') { if (phy_list[0] == 'c') { /* Single stream */ wl_band_2GHz_nphy.ht_cap.mcs.rx_mask[1] = 0; wl_band_2GHz_nphy.ht_cap.mcs.rx_highest = 72; } hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl_band_2GHz_nphy; } else { return -EPERM; } /* Assume all bands use the same phy. True for 11n devices. */ if (NBANDS_PUB(wl->pub) > 1) { has_5g++; if (phy_list[0] == 'n' || phy_list[0] == 'c') { hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wl_band_5GHz_nphy; } else { return -EPERM; } } return 0; } /* * is called in wl_pci_probe() context, therefore no locking required. */ static int ieee_hw_init(struct ieee80211_hw *hw) { hw->flags = IEEE80211_HW_SIGNAL_DBM /* | IEEE80211_HW_CONNECTION_MONITOR What is this? */ | IEEE80211_HW_REPORTS_TX_ACK_STATUS | IEEE80211_HW_AMPDU_AGGREGATION; hw->extra_tx_headroom = wlc_get_header_len(); hw->queues = N_TX_QUEUES; /* FIXME: this doesn't seem to be used properly in minstrel_ht. * mac80211/status.c:ieee80211_tx_status() checks this value, * but mac80211/rc80211_minstrel_ht.c:minstrel_ht_get_rate() * appears to always set 3 rates */ hw->max_rates = 2; /* Primary rate and 1 fallback rate */ hw->channel_change_time = 7 * 1000; /* channel change time is dependent on chip and band */ hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); hw->rate_control_algorithm = "minstrel_ht"; hw->sta_data_size = sizeof(struct scb); return ieee_hw_rate_init(hw); } /** * determines if a device is a WL device, and if so, attaches it. * * This function determines if a device pointed to by pdev is a WL device, * and if so, performs a wl_attach() on it. * * Perimeter lock is initialized in the course of this function. */ static int __devinit wl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { int rc; struct wl_info *wl; struct ieee80211_hw *hw; u32 val; dev_info(&pdev->dev, "bus %d slot %d func %d irq %d\n", pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), pdev->irq); if ((pdev->vendor != PCI_VENDOR_ID_BROADCOM) || (((pdev->device & 0xff00) != 0x4300) && ((pdev->device & 0xff00) != 0x4700) && ((pdev->device < 43000) || (pdev->device > 43999)))) return -ENODEV; rc = pci_enable_device(pdev); if (rc) { pr_err("%s: Cannot enable device %d-%d_%d\n", __func__, pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); return -ENODEV; } pci_set_master(pdev); pci_read_config_dword(pdev, 0x40, &val); if ((val & 0x0000ff00) != 0) pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); hw = ieee80211_alloc_hw(sizeof(struct wl_info), &wl_ops); if (!hw) { pr_err("%s: ieee80211_alloc_hw failed\n", __func__); return -ENOMEM; } SET_IEEE80211_DEV(hw, &pdev->dev); pci_set_drvdata(pdev, hw); memset(hw->priv, 0, sizeof(*wl)); wl = wl_attach(pdev->vendor, pdev->device, pci_resource_start(pdev, 0), PCI_BUS, pdev, pdev->irq); if (!wl) { pr_err("%s: %s: wl_attach failed!\n", KBUILD_MODNAME, __func__); return -ENODEV; } return 0; } static int wl_suspend(struct pci_dev *pdev, pm_message_t state) { struct wl_info *wl; struct ieee80211_hw *hw; hw = pci_get_drvdata(pdev); wl = HW_TO_WL(hw); if (!wl) { wiphy_err(wl->wiphy, "wl_suspend: pci_get_drvdata failed\n"); return -ENODEV; } /* only need to flag hw is down for proper resume */ WL_LOCK(wl); wl->pub->hw_up = false; WL_UNLOCK(wl); pci_save_state(pdev); pci_disable_device(pdev); return pci_set_power_state(pdev, PCI_D3hot); } static int wl_resume(struct pci_dev *pdev) { struct wl_info *wl; struct ieee80211_hw *hw; int err = 0; u32 val; hw = pci_get_drvdata(pdev); wl = HW_TO_WL(hw); if (!wl) { wiphy_err(wl->wiphy, "wl: wl_resume: pci_get_drvdata failed\n"); return -ENODEV; } err = pci_set_power_state(pdev, PCI_D0); if (err) return err; pci_restore_state(pdev); err = pci_enable_device(pdev); if (err) return err; pci_set_master(pdev); pci_read_config_dword(pdev, 0x40, &val); if ((val & 0x0000ff00) != 0) pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); /* * done. driver will be put in up state * in wl_ops_add_interface() call. */ return err; } /* * called from both kernel as from wl_*() * precondition: perimeter lock is not acquired. */ static void wl_remove(struct pci_dev *pdev) { struct wl_info *wl; struct ieee80211_hw *hw; int status; hw = pci_get_drvdata(pdev); wl = HW_TO_WL(hw); if (!wl) { pr_err("wl: wl_remove: pci_get_drvdata failed\n"); return; } WL_LOCK(wl); status = wlc_chipmatch(pdev->vendor, pdev->device); WL_UNLOCK(wl); if (!status) { wiphy_err(wl->wiphy, "wl: wl_remove: wlc_chipmatch failed\n"); return; } if (wl->wlc) { wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false); wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); ieee80211_unregister_hw(hw); WL_LOCK(wl); wl_down(wl); WL_UNLOCK(wl); } pci_disable_device(pdev); wl_free(wl); pci_set_drvdata(pdev, NULL); ieee80211_free_hw(hw); } static struct pci_driver wl_pci_driver = { .name = KBUILD_MODNAME, .probe = wl_pci_probe, .suspend = wl_suspend, .resume = wl_resume, .remove = __devexit_p(wl_remove), .id_table = wl_id_table, }; /** * This is the main entry point for the WL driver. * * This function determines if a device pointed to by pdev is a WL device, * and if so, performs a wl_attach() on it. * */ static int __init wl_module_init(void) { int error = -ENODEV; #ifdef BCMDBG if (msglevel != 0xdeadbeef) wl_msg_level = msglevel; else { char *var = getvar(NULL, "wl_msglevel"); if (var) { unsigned long value; (void)strict_strtoul(var, 0, &value); wl_msg_level = value; } } if (phymsglevel != 0xdeadbeef) phyhal_msg_level = phymsglevel; else { char *var = getvar(NULL, "phy_msglevel"); if (var) { unsigned long value; (void)strict_strtoul(var, 0, &value); phyhal_msg_level = value; } } #endif /* BCMDBG */ error = pci_register_driver(&wl_pci_driver); if (!error) return 0; return error; } /** * This function unloads the WL driver from the system. * * This function unconditionally unloads the WL driver module from the * system. * */ static void __exit wl_module_exit(void) { pci_unregister_driver(&wl_pci_driver); } module_init(wl_module_init); module_exit(wl_module_exit); /** * This function frees the WL per-device resources. * * This function frees resources owned by the WL device pointed to * by the wl parameter. * * precondition: can both be called locked and unlocked * */ static void wl_free(struct wl_info *wl) { struct wl_timer *t, *next; /* free ucode data */ if (wl->fw.fw_cnt) wl_ucode_data_free(); if (wl->irq) free_irq(wl->irq, wl); /* kill dpc */ tasklet_kill(&wl->tasklet); if (wl->pub) { wlc_module_unregister(wl->pub, "linux", wl); } /* free common resources */ if (wl->wlc) { wlc_detach(wl->wlc); wl->wlc = NULL; wl->pub = NULL; } /* virtual interface deletion is deferred so we cannot spinwait */ /* wait for all pending callbacks to complete */ while (atomic_read(&wl->callbacks) > 0) schedule(); /* free timers */ for (t = wl->timers; t; t = next) { next = t->next; #ifdef BCMDBG kfree(t->name); #endif kfree(t); } /* * unregister_netdev() calls get_stats() which may read chip registers * so we cannot unmap the chip registers until after calling unregister_netdev() . */ if (wl->regsva && wl->bcm_bustype != SDIO_BUS && wl->bcm_bustype != JTAG_BUS) { iounmap((void *)wl->regsva); } wl->regsva = NULL; } /* flags the given rate in rateset as requested */ static void wl_set_basic_rate(struct wl_rateset *rs, u16 rate, bool is_br) { u32 i; for (i = 0; i < rs->count; i++) { if (rate != (rs->rates[i] & 0x7f)) continue; if (is_br) rs->rates[i] |= WLC_RATE_FLAG; else rs->rates[i] &= WLC_RATE_MASK; return; } } /* * precondition: perimeter lock has been acquired */ void wl_txflowcontrol(struct wl_info *wl, struct wl_if *wlif, bool state, int prio) { wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__); } /* * precondition: perimeter lock has been acquired */ void wl_init(struct wl_info *wl) { BCMMSG(WL_TO_HW(wl)->wiphy, "wl%d\n", wl->pub->unit); wl_reset(wl); wlc_init(wl->wlc); } /* * precondition: perimeter lock has been acquired */ uint wl_reset(struct wl_info *wl) { BCMMSG(WL_TO_HW(wl)->wiphy, "wl%d\n", wl->pub->unit); wlc_reset(wl->wlc); /* dpc will not be rescheduled */ wl->resched = 0; return 0; } /* * These are interrupt on/off entry points. Disable interrupts * during interrupt state transition. */ void wl_intrson(struct wl_info *wl) { unsigned long flags; INT_LOCK(wl, flags); wlc_intrson(wl->wlc); INT_UNLOCK(wl, flags); } /* * precondition: perimeter lock has been acquired */ bool wl_alloc_dma_resources(struct wl_info *wl, uint addrwidth) { return true; } u32 wl_intrsoff(struct wl_info *wl) { unsigned long flags; u32 status; INT_LOCK(wl, flags); status = wlc_intrsoff(wl->wlc); INT_UNLOCK(wl, flags); return status; } void wl_intrsrestore(struct wl_info *wl, u32 macintmask) { unsigned long flags; INT_LOCK(wl, flags); wlc_intrsrestore(wl->wlc, macintmask); INT_UNLOCK(wl, flags); } /* * precondition: perimeter lock has been acquired */ int wl_up(struct wl_info *wl) { int error = 0; if (wl->pub->up) return 0; error = wlc_up(wl->wlc); return error; } /* * precondition: perimeter lock has been acquired */ void wl_down(struct wl_info *wl) { uint callbacks, ret_val = 0; /* call common down function */ ret_val = wlc_down(wl->wlc); callbacks = atomic_read(&wl->callbacks) - ret_val; /* wait for down callbacks to complete */ WL_UNLOCK(wl); /* For HIGH_only driver, it's important to actually schedule other work, * not just spin wait since everything runs at schedule level */ SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000); WL_LOCK(wl); } static irqreturn_t wl_isr(int irq, void *dev_id) { struct wl_info *wl; bool ours, wantdpc; unsigned long flags; wl = (struct wl_info *) dev_id; WL_ISRLOCK(wl, flags); /* call common first level interrupt handler */ ours = wlc_isr(wl->wlc, &wantdpc); if (ours) { /* if more to do... */ if (wantdpc) { /* ...and call the second level interrupt handler */ /* schedule dpc */ tasklet_schedule(&wl->tasklet); } } WL_ISRUNLOCK(wl, flags); return IRQ_RETVAL(ours); } static void wl_dpc(unsigned long data) { struct wl_info *wl; wl = (struct wl_info *) data; WL_LOCK(wl); /* call the common second level interrupt handler */ if (wl->pub->up) { if (wl->resched) { unsigned long flags; INT_LOCK(wl, flags); wlc_intrsupd(wl->wlc); INT_UNLOCK(wl, flags); } wl->resched = wlc_dpc(wl->wlc, true); } /* wlc_dpc() may bring the driver down */ if (!wl->pub->up) goto done; /* re-schedule dpc */ if (wl->resched) tasklet_schedule(&wl->tasklet); else { /* re-enable interrupts */ wl_intrson(wl); } done: WL_UNLOCK(wl); } /* * is called by the kernel from software irq context */ static void wl_timer(unsigned long data) { _wl_timer((struct wl_timer *) data); } /* * precondition: perimeter lock is not acquired */ static void _wl_timer(struct wl_timer *t) { WL_LOCK(t->wl); if (t->set) { if (t->periodic) { t->timer.expires = jiffies + t->ms * HZ / 1000; atomic_inc(&t->wl->callbacks); add_timer(&t->timer); t->set = true; } else t->set = false; t->fn(t->arg); } atomic_dec(&t->wl->callbacks); WL_UNLOCK(t->wl); } /* * Adds a timer to the list. Caller supplies a timer function. * Is called from wlc. * * precondition: perimeter lock has been acquired */ struct wl_timer *wl_init_timer(struct wl_info *wl, void (*fn) (void *arg), void *arg, const char *name) { struct wl_timer *t; t = kzalloc(sizeof(struct wl_timer), GFP_ATOMIC); if (!t) { wiphy_err(wl->wiphy, "wl%d: wl_init_timer: out of memory\n", wl->pub->unit); return 0; } init_timer(&t->timer); t->timer.data = (unsigned long) t; t->timer.function = wl_timer; t->wl = wl; t->fn = fn; t->arg = arg; t->next = wl->timers; wl->timers = t; #ifdef BCMDBG t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC); if (t->name) strcpy(t->name, name); #endif return t; } /* BMAC_NOTE: Add timer adds only the kernel timer since it's going to be more accurate * as well as it's easier to make it periodic * * precondition: perimeter lock has been acquired */ void wl_add_timer(struct wl_info *wl, struct wl_timer *t, uint ms, int periodic) { #ifdef BCMDBG if (t->set) { wiphy_err(wl->wiphy, "%s: Already set. Name: %s, per %d\n", __func__, t->name, periodic); } #endif t->ms = ms; t->periodic = (bool) periodic; t->set = true; t->timer.expires = jiffies + ms * HZ / 1000; atomic_inc(&wl->callbacks); add_timer(&t->timer); } /* * return true if timer successfully deleted, false if still pending * * precondition: perimeter lock has been acquired */ bool wl_del_timer(struct wl_info *wl, struct wl_timer *t) { if (t->set) { t->set = false; if (!del_timer(&t->timer)) { return false; } atomic_dec(&wl->callbacks); } return true; } /* * precondition: perimeter lock has been acquired */ void wl_free_timer(struct wl_info *wl, struct wl_timer *t) { struct wl_timer *tmp; /* delete the timer in case it is active */ wl_del_timer(wl, t); if (wl->timers == t) { wl->timers = wl->timers->next; #ifdef BCMDBG kfree(t->name); #endif kfree(t); return; } tmp = wl->timers; while (tmp) { if (tmp->next == t) { tmp->next = t->next; #ifdef BCMDBG kfree(t->name); #endif kfree(t); return; } tmp = tmp->next; } } /* * runs in software irq context * * precondition: perimeter lock is not acquired */ static int wl_linux_watchdog(void *ctx) { return 0; } struct wl_fw_hdr { u32 offset; u32 len; u32 idx; }; char *wl_firmwares[WL_MAX_FW] = { "brcm/bcm43xx", NULL }; /* * precondition: perimeter lock has been acquired */ int wl_ucode_init_buf(struct wl_info *wl, void **pbuf, u32 idx) { int i, entry; const u8 *pdata; struct wl_fw_hdr *hdr; for (i = 0; i < wl->fw.fw_cnt; i++) { hdr = (struct wl_fw_hdr *)wl->fw.fw_hdr[i]->data; for (entry = 0; entry < wl->fw.hdr_num_entries[i]; entry++, hdr++) { if (hdr->idx == idx) { pdata = wl->fw.fw_bin[i]->data + hdr->offset; *pbuf = kmalloc(hdr->len, GFP_ATOMIC); if (*pbuf == NULL) { wiphy_err(wl->wiphy, "fail to alloc %d" " bytes\n", hdr->len); goto fail; } memcpy(*pbuf, pdata, hdr->len); return 0; } } } wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n", idx); *pbuf = NULL; fail: return -ENODATA; } /* * Precondition: Since this function is called in wl_pci_probe() context, * no locking is required. */ int wl_ucode_init_uint(struct wl_info *wl, u32 *data, u32 idx) { int i, entry; const u8 *pdata; struct wl_fw_hdr *hdr; for (i = 0; i < wl->fw.fw_cnt; i++) { hdr = (struct wl_fw_hdr *)wl->fw.fw_hdr[i]->data; for (entry = 0; entry < wl->fw.hdr_num_entries[i]; entry++, hdr++) { if (hdr->idx == idx) { pdata = wl->fw.fw_bin[i]->data + hdr->offset; if (hdr->len != 4) { wiphy_err(wl->wiphy, "ERROR: fw hdr len\n"); return -ENOMSG; } *data = *((u32 *) pdata); return 0; } } } wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx); return -ENOMSG; } /* * Precondition: Since this function is called in wl_pci_probe() context, * no locking is required. */ static int wl_request_fw(struct wl_info *wl, struct pci_dev *pdev) { int status; struct device *device = &pdev->dev; char fw_name[100]; int i; memset((void *)&wl->fw, 0, sizeof(struct wl_firmware)); for (i = 0; i < WL_MAX_FW; i++) { if (wl_firmwares[i] == NULL) break; sprintf(fw_name, "%s-%d.fw", wl_firmwares[i], UCODE_LOADER_API_VER); status = request_firmware(&wl->fw.fw_bin[i], fw_name, device); if (status) { wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", KBUILD_MODNAME, fw_name); return status; } sprintf(fw_name, "%s_hdr-%d.fw", wl_firmwares[i], UCODE_LOADER_API_VER); status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device); if (status) { wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", KBUILD_MODNAME, fw_name); return status; } wl->fw.hdr_num_entries[i] = wl->fw.fw_hdr[i]->size / (sizeof(struct wl_fw_hdr)); } wl->fw.fw_cnt = i; return wl_ucode_data_init(wl); } /* * precondition: can both be called locked and unlocked */ void wl_ucode_free_buf(void *p) { kfree(p); } /* * Precondition: Since this function is called in wl_pci_probe() context, * no locking is required. */ static void wl_release_fw(struct wl_info *wl) { int i; for (i = 0; i < WL_MAX_FW; i++) { release_firmware(wl->fw.fw_bin[i]); release_firmware(wl->fw.fw_hdr[i]); } } /* * checks validity of all firmware images loaded from user space * * Precondition: Since this function is called in wl_pci_probe() context, * no locking is required. */ int wl_check_firmwares(struct wl_info *wl) { int i; int entry; int rc = 0; const struct firmware *fw; const struct firmware *fw_hdr; struct wl_fw_hdr *ucode_hdr; for (i = 0; i < WL_MAX_FW && rc == 0; i++) { fw = wl->fw.fw_bin[i]; fw_hdr = wl->fw.fw_hdr[i]; if (fw == NULL && fw_hdr == NULL) { break; } else if (fw == NULL || fw_hdr == NULL) { wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n", __func__); rc = -EBADF; } else if (fw_hdr->size % sizeof(struct wl_fw_hdr)) { wiphy_err(wl->wiphy, "%s: non integral fw hdr file " "size %zu/%zu\n", __func__, fw_hdr->size, sizeof(struct wl_fw_hdr)); rc = -EBADF; } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) { wiphy_err(wl->wiphy, "%s: out of bounds fw file size " "%zu\n", __func__, fw->size); rc = -EBADF; } else { /* check if ucode section overruns firmware image */ ucode_hdr = (struct wl_fw_hdr *)fw_hdr->data; for (entry = 0; entry < wl->fw.hdr_num_entries[i] && !rc; entry++, ucode_hdr++) { if (ucode_hdr->offset + ucode_hdr->len > fw->size) { wiphy_err(wl->wiphy, "%s: conflicting bin/hdr\n", __func__); rc = -EBADF; } } } } if (rc == 0 && wl->fw.fw_cnt != i) { wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__, wl->fw.fw_cnt); rc = -EBADF; } return rc; } /* * precondition: perimeter lock has been acquired */ bool wl_rfkill_set_hw_state(struct wl_info *wl) { bool blocked = wlc_check_radio_disabled(wl->wlc); WL_UNLOCK(wl); wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); if (blocked) wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy); WL_LOCK(wl); return blocked; } /* * precondition: perimeter lock has been acquired */ void wl_msleep(struct wl_info *wl, uint ms) { WL_UNLOCK(wl); msleep(ms); WL_LOCK(wl); }