diff options
author | Paul Mundt <lethal@linux-sh.org> | 2011-03-17 07:44:08 (GMT) |
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committer | Paul Mundt <lethal@linux-sh.org> | 2011-03-17 07:44:08 (GMT) |
commit | 1d2a1959fe534279cf37aba20b08c24c20840e52 (patch) | |
tree | 67c0b9aa7fe22a44bf0b4af88947799203eb8f67 /drivers/staging/brcm80211/brcmsmac/wl_mac80211.c | |
parent | 5a79ce76e9bb8f4b2cd8106ee36d15ee05013bcf (diff) | |
parent | 054cfaacf88865bff1dd58d305443d5d6c068a08 (diff) | |
download | linux-1d2a1959fe534279cf37aba20b08c24c20840e52.tar.xz |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into sh-latest
Diffstat (limited to 'drivers/staging/brcm80211/brcmsmac/wl_mac80211.c')
-rw-r--r-- | drivers/staging/brcm80211/brcmsmac/wl_mac80211.c | 1954 |
1 files changed, 1954 insertions, 0 deletions
diff --git a/drivers/staging/brcm80211/brcmsmac/wl_mac80211.c b/drivers/staging/brcm80211/brcmsmac/wl_mac80211.c new file mode 100644 index 0000000..774b4e9 --- /dev/null +++ b/drivers/staging/brcm80211/brcmsmac/wl_mac80211.c @@ -0,0 +1,1954 @@ +/* + * 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 <linux/kernel.h> +#include <linux/etherdevice.h> +#include <linux/types.h> +#include <linux/pci_ids.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/sched.h> +#include <linux/firmware.h> +#include <net/mac80211.h> + +#include <proto/802.11.h> +#include <bcmdefs.h> +#include <bcmwifi.h> +#include <bcmutils.h> +#include <pcicfg.h> +#include <wlioctl.h> +#include <sbhnddma.h> + +#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" + +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); + +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 int wl_ops_set_rts_threshold(struct ieee80211_hw *hw, u32 value); +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_tx(struct ieee80211_hw *hw, struct sk_buff *skb) +{ + struct wl_info *wl = hw->priv; + + WL_LOCK(wl); + if (!wl->pub->up) { + WL_ERROR("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; + WL_NONE("%s : Initial channel: %d\n", __func__, curchan->hw_value); + */ + + 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) +{ +#ifdef BRCMDBG + struct wl_info *wl = hw->priv; + ASSERT(wl); +#endif /*BRCMDBG*/ + 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) { + WL_ERROR("%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) { + WL_ERROR("%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: + WL_ERROR("%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; + + WL_LOCK(wl); + if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) { + if (wlc_iovar_setint + (wl->wlc, "bcn_li_bcn", conf->listen_interval)) { + WL_ERROR("%s: Error setting listen_interval\n", + __func__); + err = -EIO; + goto config_out; + } + wlc_iovar_getint(wl->wlc, "bcn_li_bcn", &new_int); + ASSERT(new_int == conf->listen_interval); + } + if (changed & IEEE80211_CONF_CHANGE_MONITOR) + WL_ERROR("%s: change monitor mode: %s (implement)\n", __func__, + conf->flags & IEEE80211_CONF_MONITOR ? + "true" : "false"); + if (changed & IEEE80211_CONF_CHANGE_PS) + WL_ERROR("%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)) { + WL_ERROR("%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)) + WL_ERROR("%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) { + WL_ERROR("%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) { + WL_ERROR("%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); + int val; + + if (changed & BSS_CHANGED_ASSOC) { + /* association status changed (associated/disassociated) + * also implies a change in the AID. + */ + WL_ERROR("%s: %s: %sassociated\n", KBUILD_MODNAME, __func__, + info->assoc ? "" : "dis"); + wlc_associate_upd(wl->wlc, info->assoc); + } + if (changed & BSS_CHANGED_ERP_CTS_PROT) { + /* CTS protection changed */ + WL_ERROR("%s: use_cts_prot: %s (implement)\n", __func__, + info->use_cts_prot ? "true" : "false"); + } + if (changed & BSS_CHANGED_ERP_PREAMBLE) { + /* preamble changed */ + WL_ERROR("%s: short preamble: %s (implement)\n", __func__, + info->use_short_preamble ? "true" : "false"); + } + 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_NONE("%s: HT mode: 0x%04X\n", __func__, mode); + 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); + } + if (changed & BSS_CHANGED_BASIC_RATES) { + /* Basic rateset changed */ + WL_ERROR("%s: Need to change Basic Rates: 0x%x (implement)\n", + __func__, (u32) info->basic_rates); + } + if (changed & BSS_CHANGED_BEACON_INT) { + /* Beacon interval changed */ + WL_NONE("%s: Beacon Interval: %d\n", + __func__, info->beacon_int); + wlc_set(wl->wlc, WLC_SET_BCNPRD, info->beacon_int); + } + if (changed & BSS_CHANGED_BSSID) { + /* BSSID changed, for whatever reason (IBSS and managed mode) */ + WL_NONE("%s: new BSSID: aid %d bss:%pM\n", __func__, + info->aid, info->bssid); + 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) */ + WL_ERROR("%s: beacon changed\n", __func__); + } + if (changed & BSS_CHANGED_BEACON_ENABLED) { + /* Beaconing should be enabled/disabled (beaconing modes) */ + WL_ERROR("%s: Beacon enabled: %s\n", __func__, + info->enable_beacon ? "true" : "false"); + } + if (changed & BSS_CHANGED_CQM) { + /* Connection quality monitor config changed */ + WL_ERROR("%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 */ + WL_ERROR("%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 */ + WL_ERROR("%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. + */ + WL_ERROR("%s: qos enabled: %s (implement)\n", __func__, + info->qos ? "true" : "false"); + } + if (changed & BSS_CHANGED_IDLE) { + /* Idle changed for this BSS/interface */ + WL_ERROR("%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; + + changed_flags &= MAC_FILTERS; + *total_flags &= MAC_FILTERS; + if (changed_flags & FIF_PROMISC_IN_BSS) + WL_ERROR("FIF_PROMISC_IN_BSS\n"); + if (changed_flags & FIF_ALLMULTI) + WL_ERROR("FIF_ALLMULTI\n"); + if (changed_flags & FIF_FCSFAIL) + WL_ERROR("FIF_FCSFAIL\n"); + if (changed_flags & FIF_PLCPFAIL) + WL_ERROR("FIF_PLCPFAIL\n"); + if (changed_flags & FIF_CONTROL) + WL_ERROR("FIF_CONTROL\n"); + if (changed_flags & FIF_OTHER_BSS) + WL_ERROR("FIF_OTHER_BSS\n"); + if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { + WL_NONE("FIF_BCN_PRBRESP_PROMISC\n"); + 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) +{ + WL_NONE("%s: Enter\n", __func__); + return 0; +} + +static void wl_ops_sw_scan_start(struct ieee80211_hw *hw) +{ + struct wl_info *wl = hw->priv; + WL_NONE("Scan Start\n"); + 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_NONE("Scan Complete\n"); + WL_LOCK(wl); + wlc_scan_stop(wl->wlc); + WL_UNLOCK(wl); + return; +} + +static void wl_ops_set_tsf(struct ieee80211_hw *hw, u64 tsf) +{ + WL_ERROR("%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 = cnt->txnoack; + stats->dot11RTSFailureCount = cnt->txnocts; + stats->dot11FCSErrorCount = cnt->rxcrc; + stats->dot11RTSSuccessCount = cnt->txrts; + WL_UNLOCK(wl); + return 0; +} + +static int wl_ops_set_rts_threshold(struct ieee80211_hw *hw, u32 value) +{ + struct wl_info *wl = hw->priv; + + WL_LOCK(wl); + wlc_iovar_setint(wl->wlc, "rtsthresh", value & 0xFFFF); + 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) +{ + WL_NONE("%s: Enter\n", __func__); + switch (cmd) { + default: + WL_ERROR("%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_NONE("%s: Enter (WME config)\n", __func__); + WL_NONE("queue %d, txop %d, cwmin %d, cwmax %d, aifs %d\n", queue, + params->txop, params->cw_min, params->cw_max, params->aifs); + + WL_LOCK(wl); + wlc_wme_setparams(wl->wlc, queue, (void *)params, true); + WL_UNLOCK(wl); + + return 0; +} + +static u64 wl_ops_get_tsf(struct ieee80211_hw *hw) +{ + WL_ERROR("%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; + 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) +{ + WL_NONE("%s: Enter\n", __func__); + 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) +{ +#if defined(BCMDBG) + struct scb *scb = (struct scb *)sta->drv_priv; +#endif + struct wl_info *wl = hw->priv; + int status; + + ASSERT(scb->magic == SCB_MAGIC); + switch (action) { + case IEEE80211_AMPDU_RX_START: + WL_NONE("%s: action = IEEE80211_AMPDU_RX_START\n", __func__); + break; + case IEEE80211_AMPDU_RX_STOP: + WL_NONE("%s: action = IEEE80211_AMPDU_RX_STOP\n", __func__); + break; + case IEEE80211_AMPDU_TX_START: + WL_LOCK(wl); + status = wlc_aggregatable(wl->wlc, tid); + WL_UNLOCK(wl); + if (!status) { + /* WL_ERROR("START: tid %d is not agg' able, return FAILURE to stack\n", tid); */ + return -1; + } + /* 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 */ + WL_NONE("%s: action = IEEE80211_AMPDU_TX_OPERATIONAL\n", + __func__); + break; + default: + WL_ERROR("%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); + + WL_NONE("wl: rfkill_poll: %d\n", blocked); + wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); +} + +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, + .set_rts_threshold = wl_ops_set_rts_threshold, + .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, +}; + +/* + * is called in wl_pci_probe() context, therefore no locking required. + */ +static int wl_set_hint(struct wl_info *wl, char *abbrev) +{ + WL_NONE("%s: Sending country code %c%c to MAC80211\n", + __func__, abbrev[0], abbrev[1]); + 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; + int unit, err; + + unsigned long base_addr; + struct ieee80211_hw *hw; + u8 perm[ETH_ALEN]; + + unit = wl_found; + err = 0; + + if (unit < 0) { + WL_ERROR("wl%d: unit number overflow, exiting\n", unit); + return NULL; + } + + /* allocate private info */ + hw = pci_get_drvdata(btparam); /* btparam == pdev */ + wl = hw->priv; + ASSERT(wl); + + 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; + WL_TRACE("force to PCI\n"); + } + wl->bcm_bustype = bustype; + + wl->regsva = ioremap_nocache(base_addr, PCI_BAR0_WINSZ); + if (wl->regsva == NULL) { + WL_ERROR("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) { + WL_ERROR("%s: Failed to find firmware usually in %s\n", + KBUILD_MODNAME, "/lib/firmware/brcm"); + wl_release_fw(wl); + wl_remove((struct pci_dev *)btparam); + goto fail1; + } + + /* 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) { + WL_ERROR("%s: wlc_attach() failed with code %d\n", + KBUILD_MODNAME, err); + goto fail; + } + wl->pub = wlc_pub(wl->wlc); + + wl->pub->ieee_hw = hw; + ASSERT(wl->pub->ieee_hw); + ASSERT(wl->pub->ieee_hw->priv == wl); + + + if (wlc_iovar_setint(wl->wlc, "mpc", 0)) { + WL_ERROR("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)) { + WL_ERROR("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)) { + WL_ERROR("wl%d: %s: ieee_hw_init failed!\n", unit, __func__); + goto fail; + } + + memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN); + ASSERT(is_valid_ether_addr(perm)); + SET_IEEE80211_PERM_ADDR(hw, perm); + + err = ieee80211_register_hw(hw); + if (err) { + WL_ERROR("%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) { + WL_ERROR("%s: regulatory_hint failed, status %d\n", + __func__, err); + } + + wl_found++; + return wl; + +fail: + wl_free(wl); +fail1: + 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) { + WL_ERROR("Phy list failed\n"); + } + WL_NONE("%s: phylist = %c\n", __func__, phy_list[0]); + + 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 { + BUG(); + return -1; + } + + /* 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 -1; + } + } + + WL_NONE("%s: 2ghz = %d, 5ghz = %d\n", __func__, 1, has_5g); + + 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(); + /* FIXME: should get this from wlc->machwcap */ + hw->queues = 4; + /* 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 dependant 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; + + ASSERT(pdev); + + WL_TRACE("%s: bus %d slot %d func %d irq %d\n", + __func__, 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) { + WL_ERROR("%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) { + WL_ERROR("%s: ieee80211_alloc_hw failed\n", __func__); + rc = -ENOMEM; + goto err_1; + } + + 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) { + WL_ERROR("%s: %s: wl_attach failed!\n", + KBUILD_MODNAME, __func__); + return -ENODEV; + } + return 0; + err_1: + WL_ERROR("%s: err_1: Major hoarkage\n", __func__); + return 0; +} + +static int wl_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct wl_info *wl; + struct ieee80211_hw *hw; + + WL_TRACE("wl: wl_suspend\n"); + + hw = pci_get_drvdata(pdev); + wl = HW_TO_WL(hw); + if (!wl) { + WL_ERROR("wl: 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; + + WL_TRACE("wl: wl_resume\n"); + hw = pci_get_drvdata(pdev); + wl = HW_TO_WL(hw); + if (!wl) { + WL_ERROR("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) { + WL_ERROR("wl: wl_remove: pci_get_drvdata failed\n"); + return; + } + + WL_LOCK(wl); + status = wlc_chipmatch(pdev->vendor, pdev->device); + WL_UNLOCK(wl); + if (!status) { + WL_ERROR("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); + WL_NONE("%s: Down\n", __func__); + } + 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; + + ASSERT(wl); + /* 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; +} + +/* + * precondition: perimeter lock has been acquired + */ +void wl_txflowcontrol(struct wl_info *wl, struct wl_if *wlif, bool state, + int prio) +{ + WL_ERROR("Shouldn't be here %s\n", __func__); +} + +/* + * precondition: perimeter lock has been acquired + */ +void wl_init(struct wl_info *wl) +{ + WL_TRACE("wl%d: wl_init\n", wl->pub->unit); + + wl_reset(wl); + + wlc_init(wl->wlc); +} + +/* + * precondition: perimeter lock has been acquired + */ +uint wl_reset(struct wl_info *wl) +{ + WL_TRACE("wl%d: wl_reset\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 BCMFASTPATH 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 BCMFASTPATH 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 BCMFASTPATH 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 */ + ASSERT(wl->resched == false); + tasklet_schedule(&wl->tasklet); + } + } + + WL_ISRUNLOCK(wl, flags); + + return IRQ_RETVAL(ours); +} + +static void BCMFASTPATH 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) { + WL_ERROR("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) { + WL_ERROR("%s: Already set. Name: %s, per %d\n", + __func__, t->name, periodic); + } +#endif + ASSERT(!t->set); + + 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) +{ + struct wl_info *wl = (struct wl_info *) ctx; + struct wl_cnt *cnt; + struct net_device_stats *stats = NULL; + uint id; + /* refresh stats */ + if (wl->pub->up) { + ASSERT(wl->stats_id < 2); + + cnt = wl->pub->_cnt; + id = 1 - wl->stats_id; + stats = &wl->stats_watchdog[id]; + stats->rx_packets = cnt->rxframe; + stats->tx_packets = cnt->txframe; + stats->rx_bytes = cnt->rxbyte; + stats->tx_bytes = cnt->txbyte; + stats->rx_errors = cnt->rxerror; + stats->tx_errors = cnt->txerror; + stats->collisions = 0; + + stats->rx_length_errors = 0; + stats->rx_over_errors = cnt->rxoflo; + stats->rx_crc_errors = cnt->rxcrc; + stats->rx_frame_errors = 0; + stats->rx_fifo_errors = cnt->rxoflo; + stats->rx_missed_errors = 0; + + stats->tx_fifo_errors = cnt->txuflo; + + wl->stats_id = id; + } + + 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) { + WL_ERROR("fail to alloc %d bytes\n", + hdr->len); + goto fail; + } + memcpy(*pbuf, pdata, hdr->len); + return 0; + } + } + } + WL_ERROR("ERROR: ucode buf tag:%d can not be found!\n", idx); + *pbuf = NULL; +fail: + return BCME_NOTFOUND; +} + +/* + * 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; + ASSERT(hdr->len == 4); + *data = *((u32 *) pdata); + return 0; + } + } + } + WL_ERROR("ERROR: ucode tag:%d can not be found!\n", idx); + return -1; +} + +/* + * 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); + WL_NONE("request fw %s\n", fw_name); + status = request_firmware(&wl->fw.fw_bin[i], fw_name, device); + if (status) { + WL_ERROR("%s: fail to load firmware %s\n", + KBUILD_MODNAME, fw_name); + return status; + } + WL_NONE("request fw %s\n", fw_name); + 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) { + WL_ERROR("%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_NONE("request fw %s find: %d entries\n", + fw_name, wl->fw.hdr_num_entries[i]); + } + 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) { + WL_ERROR("%s: invalid bin/hdr fw\n", __func__); + rc = -EBADF; + } else if (fw_hdr->size % sizeof(struct wl_fw_hdr)) { + WL_ERROR("%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) { + WL_ERROR("%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) { + WL_ERROR("%s: conflicting bin/hdr\n", + __func__); + rc = -EBADF; + } + } + } + } + if (rc == 0 && wl->fw.fw_cnt != i) { + WL_ERROR("%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_NONE("%s: update hw state: blocked=%s\n", __func__, + blocked ? "true" : "false"); + 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; +} |