diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c | 1703 |
1 files changed, 1703 insertions, 0 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c new file mode 100644 index 00000000000..43c71bfaa47 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c @@ -0,0 +1,1703 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de> + * + * 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__ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/etherdevice.h> +#include <linux/sched.h> +#include <linux/firmware.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/bcma/bcma.h> +#include <net/mac80211.h> +#include <defs.h> +#include "phy/phy_int.h" +#include "d11.h" +#include "channel.h" +#include "scb.h" +#include "pub.h" +#include "ucode_loader.h" +#include "mac80211_if.h" +#include "main.h" +#include "debug.h" +#include "led.h" + +#define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */ +#define BRCMS_FLUSH_TIMEOUT 500 /* msec */ + +/* Flags we support */ +#define MAC_FILTERS (FIF_PROMISC_IN_BSS | \ + FIF_ALLMULTI | \ + FIF_FCSFAIL | \ + FIF_CONTROL | \ + FIF_OTHER_BSS | \ + FIF_BCN_PRBRESP_PROMISC | \ + FIF_PSPOLL) + +#define CHAN2GHZ(channel, freqency, chflags) { \ + .band = IEEE80211_BAND_2GHZ, \ + .center_freq = (freqency), \ + .hw_value = (channel), \ + .flags = chflags, \ + .max_antenna_gain = 0, \ + .max_power = 19, \ +} + +#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, \ +} + +#define RATE(rate100m, _flags) { \ + .bitrate = (rate100m), \ + .flags = (_flags), \ + .hw_value = (rate100m / 5), \ +} + +struct firmware_hdr { + __le32 offset; + __le32 len; + __le32 idx; +}; + +static const char * const brcms_firmwares[MAX_FW_IMAGES] = { + "brcm/bcm43xx", + NULL +}; + +static int n_adapters_found; + +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"); +/* This needs to be adjusted when brcms_firmwares changes */ +MODULE_FIRMWARE("brcm/bcm43xx-0.fw"); +MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw"); + +/* recognized BCMA Core IDs */ +static struct bcma_device_id brcms_coreid_table[] = { + BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS), + BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS), + BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS), + BCMA_CORETABLE_END +}; +MODULE_DEVICE_TABLE(bcma, brcms_coreid_table); + +#if defined(CONFIG_BRCMDBG) +/* + * Module parameter for setting the debug message level. Available + * flags are specified by the BRCM_DL_* macros in + * drivers/net/wireless/brcm80211/include/defs.h. + */ +module_param_named(debug, brcm_msg_level, uint, S_IRUGO | S_IWUSR); +#endif + +static struct ieee80211_channel brcms_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_NO_IR | + IEEE80211_CHAN_NO_HT40PLUS), + CHAN2GHZ(13, 2472, + IEEE80211_CHAN_NO_IR | + IEEE80211_CHAN_NO_HT40PLUS), + CHAN2GHZ(14, 2484, + IEEE80211_CHAN_NO_IR | + IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS | + IEEE80211_CHAN_NO_OFDM) +}; + +static struct ieee80211_channel brcms_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_IR | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(56, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(60, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(64, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), + /* MID */ + CHAN5GHZ(100, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(104, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(108, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(112, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(116, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(120, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(124, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(128, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(132, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), + CHAN5GHZ(136, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), + CHAN5GHZ(140, + IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR | 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) +}; + +/* + * The rate table is used for both 2.4G and 5G rates. The + * latter being a subset as it does not support CCK rates. + */ +static struct ieee80211_rate 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 const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = { + .band = IEEE80211_BAND_2GHZ, + .channels = brcms_2ghz_chantable, + .n_channels = ARRAY_SIZE(brcms_2ghz_chantable), + .bitrates = legacy_ratetable, + .n_bitrates = ARRAY_SIZE(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, + .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 = cpu_to_le16(500), + .tx_params = IEEE80211_HT_MCS_TX_DEFINED} + } +}; + +static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = { + .band = IEEE80211_BAND_5GHZ, + .channels = brcms_5ghz_nphy_chantable, + .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable), + .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET, + .n_bitrates = ARRAY_SIZE(legacy_ratetable) - + BRCMS_LEGACY_5G_RATE_OFFSET, + .ht_cap = { + .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | + IEEE80211_HT_CAP_SGI_40, + .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 = cpu_to_le16(500), + .tx_params = IEEE80211_HT_MCS_TX_DEFINED} + } +}; + +/* flags the given rate in rateset as requested */ +static void brcms_set_basic_rate(struct brcm_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] |= BRCMS_RATE_FLAG; + else + rs->rates[i] &= BRCMS_RATE_MASK; + return; + } +} + +/** + * 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 brcms_free(struct brcms_info *wl) +{ + struct brcms_timer *t, *next; + + /* free ucode data */ + if (wl->fw.fw_cnt) + brcms_ucode_data_free(&wl->ucode); + if (wl->irq) + free_irq(wl->irq, wl); + + /* kill dpc */ + tasklet_kill(&wl->tasklet); + + if (wl->pub) { + brcms_debugfs_detach(wl->pub); + brcms_c_module_unregister(wl->pub, "linux", wl); + } + + /* free common resources */ + if (wl->wlc) { + brcms_c_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 DEBUG + kfree(t->name); +#endif + kfree(t); + } +} + +/* +* called from both kernel as from this kernel module (error flow on attach) +* precondition: perimeter lock is not acquired. +*/ +static void brcms_remove(struct bcma_device *pdev) +{ + struct ieee80211_hw *hw = bcma_get_drvdata(pdev); + struct brcms_info *wl = hw->priv; + + if (wl->wlc) { + brcms_led_unregister(wl); + wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false); + wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); + ieee80211_unregister_hw(hw); + } + + brcms_free(wl); + + bcma_set_drvdata(pdev, NULL); + ieee80211_free_hw(hw); +} + +/* + * Precondition: Since this function is called in brcms_pci_probe() context, + * no locking is required. + */ +static void brcms_release_fw(struct brcms_info *wl) +{ + int i; + for (i = 0; i < MAX_FW_IMAGES; i++) { + release_firmware(wl->fw.fw_bin[i]); + release_firmware(wl->fw.fw_hdr[i]); + } +} + +/* + * Precondition: Since this function is called in brcms_pci_probe() context, + * no locking is required. + */ +static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev) +{ + int status; + struct device *device = &pdev->dev; + char fw_name[100]; + int i; + + memset(&wl->fw, 0, sizeof(struct brcms_firmware)); + for (i = 0; i < MAX_FW_IMAGES; i++) { + if (brcms_firmwares[i] == NULL) + break; + sprintf(fw_name, "%s-%d.fw", brcms_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", brcms_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 firmware_hdr)); + } + wl->fw.fw_cnt = i; + status = brcms_ucode_data_init(wl, &wl->ucode); + brcms_release_fw(wl); + return status; +} + +static void brcms_ops_tx(struct ieee80211_hw *hw, + struct ieee80211_tx_control *control, + struct sk_buff *skb) +{ + struct brcms_info *wl = hw->priv; + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); + + spin_lock_bh(&wl->lock); + if (!wl->pub->up) { + brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n"); + kfree_skb(skb); + goto done; + } + if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw)) + tx_info->rate_driver_data[0] = control->sta; + done: + spin_unlock_bh(&wl->lock); +} + +static int brcms_ops_start(struct ieee80211_hw *hw) +{ + struct brcms_info *wl = hw->priv; + bool blocked; + int err; + + if (!wl->ucode.bcm43xx_bomminor) { + err = brcms_request_fw(wl, wl->wlc->hw->d11core); + if (err) + return -ENOENT; + } + + ieee80211_wake_queues(hw); + spin_lock_bh(&wl->lock); + blocked = brcms_rfkill_set_hw_state(wl); + spin_unlock_bh(&wl->lock); + if (!blocked) + wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); + + spin_lock_bh(&wl->lock); + /* avoid acknowledging frames before a non-monitor device is added */ + wl->mute_tx = true; + + if (!wl->pub->up) + if (!blocked) + err = brcms_up(wl); + else + err = -ERFKILL; + else + err = -ENODEV; + spin_unlock_bh(&wl->lock); + + if (err != 0) + brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n", + __func__, err); + + bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true); + return err; +} + +static void brcms_ops_stop(struct ieee80211_hw *hw) +{ + struct brcms_info *wl = hw->priv; + int status; + + ieee80211_stop_queues(hw); + + if (wl->wlc == NULL) + return; + + spin_lock_bh(&wl->lock); + status = brcms_c_chipmatch(wl->wlc->hw->d11core); + spin_unlock_bh(&wl->lock); + if (!status) { + brcms_err(wl->wlc->hw->d11core, + "wl: brcms_ops_stop: chipmatch failed\n"); + return; + } + + bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false); + + /* put driver in down state */ + spin_lock_bh(&wl->lock); + brcms_down(wl); + spin_unlock_bh(&wl->lock); +} + +static int +brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct brcms_info *wl = hw->priv; + + /* Just STA, AP and ADHOC for now */ + if (vif->type != NL80211_IFTYPE_STATION && + vif->type != NL80211_IFTYPE_AP && + vif->type != NL80211_IFTYPE_ADHOC) { + brcms_err(wl->wlc->hw->d11core, + "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n", + __func__, vif->type); + return -EOPNOTSUPP; + } + + spin_lock_bh(&wl->lock); + wl->mute_tx = false; + brcms_c_mute(wl->wlc, false); + if (vif->type == NL80211_IFTYPE_STATION) + brcms_c_start_station(wl->wlc, vif->addr); + else if (vif->type == NL80211_IFTYPE_AP) + brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid, + vif->bss_conf.ssid, vif->bss_conf.ssid_len); + else if (vif->type == NL80211_IFTYPE_ADHOC) + brcms_c_start_adhoc(wl->wlc, vif->addr); + spin_unlock_bh(&wl->lock); + + return 0; +} + +static void +brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ +} + +static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed) +{ + struct ieee80211_conf *conf = &hw->conf; + struct brcms_info *wl = hw->priv; + struct bcma_device *core = wl->wlc->hw->d11core; + int err = 0; + int new_int; + + spin_lock_bh(&wl->lock); + if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) { + brcms_c_set_beacon_listen_interval(wl->wlc, + conf->listen_interval); + } + if (changed & IEEE80211_CONF_CHANGE_MONITOR) + brcms_dbg_info(core, "%s: change monitor mode: %s\n", + __func__, conf->flags & IEEE80211_CONF_MONITOR ? + "true" : "false"); + if (changed & IEEE80211_CONF_CHANGE_PS) + brcms_err(core, "%s: change power-save mode: %s (implement)\n", + __func__, conf->flags & IEEE80211_CONF_PS ? + "true" : "false"); + + if (changed & IEEE80211_CONF_CHANGE_POWER) { + err = brcms_c_set_tx_power(wl->wlc, conf->power_level); + if (err < 0) { + brcms_err(core, "%s: Error setting power_level\n", + __func__); + goto config_out; + } + new_int = brcms_c_get_tx_power(wl->wlc); + if (new_int != conf->power_level) + brcms_err(core, + "%s: Power level req != actual, %d %d\n", + __func__, conf->power_level, + new_int); + } + if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { + if (conf->chandef.width == NL80211_CHAN_WIDTH_20 || + conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT) + err = brcms_c_set_channel(wl->wlc, + conf->chandef.chan->hw_value); + else + err = -ENOTSUPP; + } + if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) + err = brcms_c_set_rate_limit(wl->wlc, + conf->short_frame_max_tx_count, + conf->long_frame_max_tx_count); + + config_out: + spin_unlock_bh(&wl->lock); + return err; +} + +static void +brcms_ops_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *info, u32 changed) +{ + struct brcms_info *wl = hw->priv; + struct bcma_device *core = wl->wlc->hw->d11core; + + if (changed & BSS_CHANGED_ASSOC) { + /* association status changed (associated/disassociated) + * also implies a change in the AID. + */ + brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME, + __func__, info->assoc ? "" : "dis"); + spin_lock_bh(&wl->lock); + brcms_c_associate_upd(wl->wlc, info->assoc); + spin_unlock_bh(&wl->lock); + } + if (changed & BSS_CHANGED_ERP_SLOT) { + s8 val; + + /* slot timing changed */ + if (info->use_short_slot) + val = 1; + else + val = 0; + spin_lock_bh(&wl->lock); + brcms_c_set_shortslot_override(wl->wlc, val); + spin_unlock_bh(&wl->lock); + } + + if (changed & BSS_CHANGED_HT) { + /* 802.11n parameters changed */ + u16 mode = info->ht_operation_mode; + + spin_lock_bh(&wl->lock); + brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG, + mode & IEEE80211_HT_OP_MODE_PROTECTION); + brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF, + mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); + brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS, + mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT); + spin_unlock_bh(&wl->lock); + } + if (changed & BSS_CHANGED_BASIC_RATES) { + struct ieee80211_supported_band *bi; + u32 br_mask, i; + u16 rate; + struct brcm_rateset rs; + int error; + + /* retrieve the current rates */ + spin_lock_bh(&wl->lock); + brcms_c_get_current_rateset(wl->wlc, &rs); + spin_unlock_bh(&wl->lock); + + br_mask = info->basic_rates; + bi = hw->wiphy->bands[brcms_c_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 */ + brcms_set_basic_rate(&rs, rate, br_mask & 1); + br_mask >>= 1; + } + + /* update the rate set */ + spin_lock_bh(&wl->lock); + error = brcms_c_set_rateset(wl->wlc, &rs); + spin_unlock_bh(&wl->lock); + if (error) + brcms_err(core, "changing basic rates failed: %d\n", + error); + } + if (changed & BSS_CHANGED_BEACON_INT) { + /* Beacon interval changed */ + spin_lock_bh(&wl->lock); + brcms_c_set_beacon_period(wl->wlc, info->beacon_int); + spin_unlock_bh(&wl->lock); + } + if (changed & BSS_CHANGED_BSSID) { + /* BSSID changed, for whatever reason (IBSS and managed mode) */ + spin_lock_bh(&wl->lock); + brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid); + spin_unlock_bh(&wl->lock); + } + if (changed & BSS_CHANGED_SSID) { + /* BSSID changed, for whatever reason (IBSS and managed mode) */ + spin_lock_bh(&wl->lock); + brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len); + spin_unlock_bh(&wl->lock); + } + if (changed & BSS_CHANGED_BEACON) { + /* Beacon data changed, retrieve new beacon (beaconing modes) */ + struct sk_buff *beacon; + u16 tim_offset = 0; + + spin_lock_bh(&wl->lock); + beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL); + brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset, + info->dtim_period); + spin_unlock_bh(&wl->lock); + } + + if (changed & BSS_CHANGED_AP_PROBE_RESP) { + struct sk_buff *probe_resp; + + spin_lock_bh(&wl->lock); + probe_resp = ieee80211_proberesp_get(hw, vif); + brcms_c_set_new_probe_resp(wl->wlc, probe_resp); + spin_unlock_bh(&wl->lock); + } + + if (changed & BSS_CHANGED_BEACON_ENABLED) { + /* Beaconing should be enabled/disabled (beaconing modes) */ + brcms_err(core, "%s: Beacon enabled: %s\n", __func__, + info->enable_beacon ? "true" : "false"); + if (info->enable_beacon && + hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) { + brcms_c_enable_probe_resp(wl->wlc, true); + } else { + brcms_c_enable_probe_resp(wl->wlc, false); + } + } + + if (changed & BSS_CHANGED_CQM) { + /* Connection quality monitor config changed */ + brcms_err(core, "%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 */ + brcms_err(core, "%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 */ + brcms_err(core, "%s: arp filtering: %d addresses" + " (implement)\n", __func__, 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. + */ + brcms_err(core, "%s: qos enabled: %s (implement)\n", + __func__, info->qos ? "true" : "false"); + } + return; +} + +static void +brcms_ops_configure_filter(struct ieee80211_hw *hw, + unsigned int changed_flags, + unsigned int *total_flags, u64 multicast) +{ + struct brcms_info *wl = hw->priv; + struct bcma_device *core = wl->wlc->hw->d11core; + + changed_flags &= MAC_FILTERS; + *total_flags &= MAC_FILTERS; + + if (changed_flags & FIF_PROMISC_IN_BSS) + brcms_dbg_info(core, "FIF_PROMISC_IN_BSS\n"); + if (changed_flags & FIF_ALLMULTI) + brcms_dbg_info(core, "FIF_ALLMULTI\n"); + if (changed_flags & FIF_FCSFAIL) + brcms_dbg_info(core, "FIF_FCSFAIL\n"); + if (changed_flags & FIF_CONTROL) + brcms_dbg_info(core, "FIF_CONTROL\n"); + if (changed_flags & FIF_OTHER_BSS) + brcms_dbg_info(core, "FIF_OTHER_BSS\n"); + if (changed_flags & FIF_PSPOLL) + brcms_dbg_info(core, "FIF_PSPOLL\n"); + if (changed_flags & FIF_BCN_PRBRESP_PROMISC) + brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n"); + + spin_lock_bh(&wl->lock); + brcms_c_mac_promisc(wl->wlc, *total_flags); + spin_unlock_bh(&wl->lock); + return; +} + +static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw) +{ + struct brcms_info *wl = hw->priv; + spin_lock_bh(&wl->lock); + brcms_c_scan_start(wl->wlc); + spin_unlock_bh(&wl->lock); + return; +} + +static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw) +{ + struct brcms_info *wl = hw->priv; + spin_lock_bh(&wl->lock); + brcms_c_scan_stop(wl->wlc); + spin_unlock_bh(&wl->lock); + return; +} + +static int +brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, + const struct ieee80211_tx_queue_params *params) +{ + struct brcms_info *wl = hw->priv; + + spin_lock_bh(&wl->lock); + brcms_c_wme_setparams(wl->wlc, queue, params, true); + spin_unlock_bh(&wl->lock); + + return 0; +} + +static int +brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct brcms_info *wl = hw->priv; + struct scb *scb = &wl->wlc->pri_scb; + + brcms_c_init_scb(scb); + + wl->pub->global_ampdu = &(scb->scb_ampdu); + wl->pub->global_ampdu->scb = scb; + wl->pub->global_ampdu->max_pdu = 16; + + /* + * minstrel_ht initiates addBA on our behalf by calling + * ieee80211_start_tx_ba_session() + */ + return 0; +} + +static int +brcms_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 brcms_info *wl = hw->priv; + struct scb *scb = &wl->wlc->pri_scb; + 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: + spin_lock_bh(&wl->lock); + status = brcms_c_aggregatable(wl->wlc, tid); + spin_unlock_bh(&wl->lock); + if (!status) { + brcms_err(wl->wlc->hw->d11core, + "START: tid %d is not agg\'able\n", tid); + return -EINVAL; + } + ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); + break; + + case IEEE80211_AMPDU_TX_STOP_CONT: + case IEEE80211_AMPDU_TX_STOP_FLUSH: + case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: + spin_lock_bh(&wl->lock); + brcms_c_ampdu_flush(wl->wlc, sta, tid); + spin_unlock_bh(&wl->lock); + ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); + break; + case IEEE80211_AMPDU_TX_OPERATIONAL: + /* + * BA window size from ADDBA response ('buf_size') defines how + * many outstanding MPDUs are allowed for the BA stream by + * recipient and traffic class. 'ampdu_factor' gives maximum + * AMPDU size. + */ + spin_lock_bh(&wl->lock); + brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size, + (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + + sta->ht_cap.ampdu_factor)) - 1); + spin_unlock_bh(&wl->lock); + /* Power save wakeup */ + break; + default: + brcms_err(wl->wlc->hw->d11core, + "%s: Invalid command, ignoring\n", __func__); + } + + return 0; +} + +static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw) +{ + struct brcms_info *wl = hw->priv; + bool blocked; + + spin_lock_bh(&wl->lock); + blocked = brcms_c_check_radio_disabled(wl->wlc); + spin_unlock_bh(&wl->lock); + + wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); +} + +static bool brcms_tx_flush_completed(struct brcms_info *wl) +{ + bool result; + + spin_lock_bh(&wl->lock); + result = brcms_c_tx_flush_completed(wl->wlc); + spin_unlock_bh(&wl->lock); + return result; +} + +static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + u32 queues, bool drop) +{ + struct brcms_info *wl = hw->priv; + int ret; + + no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false"); + + ret = wait_event_timeout(wl->tx_flush_wq, + brcms_tx_flush_completed(wl), + msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT)); + + brcms_dbg_mac80211(wl->wlc->hw->d11core, + "ret=%d\n", jiffies_to_msecs(ret)); +} + +static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct brcms_info *wl = hw->priv; + u64 tsf; + + spin_lock_bh(&wl->lock); + tsf = brcms_c_tsf_get(wl->wlc); + spin_unlock_bh(&wl->lock); + + return tsf; +} + +static void brcms_ops_set_tsf(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, u64 tsf) +{ + struct brcms_info *wl = hw->priv; + + spin_lock_bh(&wl->lock); + brcms_c_tsf_set(wl->wlc, tsf); + spin_unlock_bh(&wl->lock); +} + +static const struct ieee80211_ops brcms_ops = { + .tx = brcms_ops_tx, + .start = brcms_ops_start, + .stop = brcms_ops_stop, + .add_interface = brcms_ops_add_interface, + .remove_interface = brcms_ops_remove_interface, + .config = brcms_ops_config, + .bss_info_changed = brcms_ops_bss_info_changed, + .configure_filter = brcms_ops_configure_filter, + .sw_scan_start = brcms_ops_sw_scan_start, + .sw_scan_complete = brcms_ops_sw_scan_complete, + .conf_tx = brcms_ops_conf_tx, + .sta_add = brcms_ops_sta_add, + .ampdu_action = brcms_ops_ampdu_action, + .rfkill_poll = brcms_ops_rfkill_poll, + .flush = brcms_ops_flush, + .get_tsf = brcms_ops_get_tsf, + .set_tsf = brcms_ops_set_tsf, +}; + +void brcms_dpc(unsigned long data) +{ + struct brcms_info *wl; + + wl = (struct brcms_info *) data; + + spin_lock_bh(&wl->lock); + + /* call the common second level interrupt handler */ + if (wl->pub->up) { + if (wl->resched) { + unsigned long flags; + + spin_lock_irqsave(&wl->isr_lock, flags); + brcms_c_intrsupd(wl->wlc); + spin_unlock_irqrestore(&wl->isr_lock, flags); + } + + wl->resched = brcms_c_dpc(wl->wlc, true); + } + + /* brcms_c_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 */ + brcms_intrson(wl); + + done: + spin_unlock_bh(&wl->lock); + wake_up(&wl->tx_flush_wq); +} + +static irqreturn_t brcms_isr(int irq, void *dev_id) +{ + struct brcms_info *wl; + irqreturn_t ret = IRQ_NONE; + + wl = (struct brcms_info *) dev_id; + + spin_lock(&wl->isr_lock); + + /* call common first level interrupt handler */ + if (brcms_c_isr(wl->wlc)) { + /* schedule second level handler */ + tasklet_schedule(&wl->tasklet); + ret = IRQ_HANDLED; + } + + spin_unlock(&wl->isr_lock); + + return ret; +} + +/* + * is called in brcms_pci_probe() context, therefore no locking required. + */ +static int ieee_hw_rate_init(struct ieee80211_hw *hw) +{ + struct brcms_info *wl = hw->priv; + struct brcms_c_info *wlc = wl->wlc; + struct ieee80211_supported_band *band; + int has_5g = 0; + u16 phy_type; + + hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; + hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; + + phy_type = brcms_c_get_phy_type(wl->wlc, 0); + if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { + band = &wlc->bandstate[BAND_2G_INDEX]->band; + *band = brcms_band_2GHz_nphy_template; + if (phy_type == PHY_TYPE_LCN) { + /* Single stream */ + band->ht_cap.mcs.rx_mask[1] = 0; + band->ht_cap.mcs.rx_highest = cpu_to_le16(72); + } + hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band; + } else { + return -EPERM; + } + + /* Assume all bands use the same phy. True for 11n devices. */ + if (wl->pub->_nbands > 1) { + has_5g++; + if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { + band = &wlc->bandstate[BAND_5G_INDEX]->band; + *band = brcms_band_5GHz_nphy_template; + hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band; + } else { + return -EPERM; + } + } + return 0; +} + +/* + * is called in brcms_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 = brcms_c_get_header_len(); + hw->queues = N_TX_QUEUES; + hw->max_rates = 2; /* Primary rate and 1 fallback rate */ + + /* channel change time is dependent on chip and band */ + hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_ADHOC); + + /* + * deactivate sending probe responses by ucude, because this will + * cause problems when WPS is used. + * + * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD; + */ + + hw->rate_control_algorithm = "minstrel_ht"; + + hw->sta_data_size = 0; + return ieee_hw_rate_init(hw); +} + +/** + * 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. + * + * is called in brcms_bcma_probe() context, therefore no locking required. + */ +static struct brcms_info *brcms_attach(struct bcma_device *pdev) +{ + struct brcms_info *wl = NULL; + int unit, err; + struct ieee80211_hw *hw; + u8 perm[ETH_ALEN]; + + unit = n_adapters_found; + err = 0; + + if (unit < 0) + return NULL; + + /* allocate private info */ + hw = bcma_get_drvdata(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); + + init_waitqueue_head(&wl->tx_flush_wq); + + /* setup the bottom half handler */ + tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl); + + spin_lock_init(&wl->lock); + spin_lock_init(&wl->isr_lock); + + /* common load-time initialization */ + wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err); + if (!wl->wlc) { + wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n", + KBUILD_MODNAME, err); + goto fail; + } + wl->pub = brcms_c_pub(wl->wlc); + + wl->pub->ieee_hw = hw; + + /* register our interrupt handler */ + if (request_irq(pdev->irq, brcms_isr, + IRQF_SHARED, KBUILD_MODNAME, wl)) { + wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit); + goto fail; + } + wl->irq = pdev->irq; + + /* register module */ + brcms_c_module_register(wl->pub, "linux", wl, NULL); + + if (ieee_hw_init(hw)) { + wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit, + __func__); + goto fail; + } + + brcms_c_regd_init(wl->wlc); + + 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] && + regulatory_hint(wl->wiphy, wl->pub->srom_ccode)) + wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__); + + brcms_debugfs_attach(wl->pub); + brcms_debugfs_create_files(wl->pub); + n_adapters_found++; + return wl; + +fail: + brcms_free(wl); + return NULL; +} + + + +/** + * 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 brcms_attach() on it. + * + * Perimeter lock is initialized in the course of this function. + */ +static int brcms_bcma_probe(struct bcma_device *pdev) +{ + struct brcms_info *wl; + struct ieee80211_hw *hw; + + dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n", + pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class, + pdev->irq); + + if ((pdev->id.manuf != BCMA_MANUF_BCM) || + (pdev->id.id != BCMA_CORE_80211)) + return -ENODEV; + + hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops); + if (!hw) { + pr_err("%s: ieee80211_alloc_hw failed\n", __func__); + return -ENOMEM; + } + + SET_IEEE80211_DEV(hw, &pdev->dev); + + bcma_set_drvdata(pdev, hw); + + memset(hw->priv, 0, sizeof(*wl)); + + wl = brcms_attach(pdev); + if (!wl) { + pr_err("%s: brcms_attach failed!\n", __func__); + return -ENODEV; + } + brcms_led_register(wl); + + return 0; +} + +static int brcms_suspend(struct bcma_device *pdev) +{ + struct brcms_info *wl; + struct ieee80211_hw *hw; + + hw = bcma_get_drvdata(pdev); + wl = hw->priv; + if (!wl) { + pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME, + __func__); + return -ENODEV; + } + + /* only need to flag hw is down for proper resume */ + spin_lock_bh(&wl->lock); + wl->pub->hw_up = false; + spin_unlock_bh(&wl->lock); + + brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n"); + + return 0; +} + +static int brcms_resume(struct bcma_device *pdev) +{ + return 0; +} + +static struct bcma_driver brcms_bcma_driver = { + .name = KBUILD_MODNAME, + .probe = brcms_bcma_probe, + .suspend = brcms_suspend, + .resume = brcms_resume, + .remove = brcms_remove, + .id_table = brcms_coreid_table, +}; + +/** + * This is the main entry point for the brcmsmac driver. + * + * This function is scheduled upon module initialization and + * does the driver registration, which result in brcms_bcma_probe() + * call resulting in the driver bringup. + */ +static void brcms_driver_init(struct work_struct *work) +{ + int error; + + error = bcma_driver_register(&brcms_bcma_driver); + if (error) + pr_err("%s: register returned %d\n", __func__, error); +} + +static DECLARE_WORK(brcms_driver_work, brcms_driver_init); + +static int __init brcms_module_init(void) +{ + brcms_debugfs_init(); + if (!schedule_work(&brcms_driver_work)) + return -EBUSY; + + return 0; +} + +/** + * This function unloads the brcmsmac driver from the system. + * + * This function unconditionally unloads the brcmsmac driver module from the + * system. + * + */ +static void __exit brcms_module_exit(void) +{ + cancel_work_sync(&brcms_driver_work); + bcma_driver_unregister(&brcms_bcma_driver); + brcms_debugfs_exit(); +} + +module_init(brcms_module_init); +module_exit(brcms_module_exit); + +/* + * precondition: perimeter lock has been acquired + */ +void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif, + bool state, int prio) +{ + brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__); +} + +/* + * precondition: perimeter lock has been acquired + */ +void brcms_init(struct brcms_info *wl) +{ + brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n", + wl->pub->unit); + brcms_reset(wl); + brcms_c_init(wl->wlc, wl->mute_tx); +} + +/* + * precondition: perimeter lock has been acquired + */ +uint brcms_reset(struct brcms_info *wl) +{ + brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit); + brcms_c_reset(wl->wlc); + + /* dpc will not be rescheduled */ + wl->resched = false; + + /* inform publicly that interface is down */ + wl->pub->up = false; + + return 0; +} + +void brcms_fatal_error(struct brcms_info *wl) +{ + brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n", + wl->wlc->pub->unit); + brcms_reset(wl); + ieee80211_restart_hw(wl->pub->ieee_hw); +} + +/* + * These are interrupt on/off entry points. Disable interrupts + * during interrupt state transition. + */ +void brcms_intrson(struct brcms_info *wl) +{ + unsigned long flags; + + spin_lock_irqsave(&wl->isr_lock, flags); + brcms_c_intrson(wl->wlc); + spin_unlock_irqrestore(&wl->isr_lock, flags); +} + +u32 brcms_intrsoff(struct brcms_info *wl) +{ + unsigned long flags; + u32 status; + + spin_lock_irqsave(&wl->isr_lock, flags); + status = brcms_c_intrsoff(wl->wlc); + spin_unlock_irqrestore(&wl->isr_lock, flags); + return status; +} + +void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask) +{ + unsigned long flags; + + spin_lock_irqsave(&wl->isr_lock, flags); + brcms_c_intrsrestore(wl->wlc, macintmask); + spin_unlock_irqrestore(&wl->isr_lock, flags); +} + +/* + * precondition: perimeter lock has been acquired + */ +int brcms_up(struct brcms_info *wl) +{ + int error = 0; + + if (wl->pub->up) + return 0; + + error = brcms_c_up(wl->wlc); + + return error; +} + +/* + * precondition: perimeter lock has been acquired + */ +void brcms_down(struct brcms_info *wl) +{ + uint callbacks, ret_val = 0; + + /* call common down function */ + ret_val = brcms_c_down(wl->wlc); + callbacks = atomic_read(&wl->callbacks) - ret_val; + + /* wait for down callbacks to complete */ + spin_unlock_bh(&wl->lock); + + /* 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); + + spin_lock_bh(&wl->lock); +} + +/* +* precondition: perimeter lock is not acquired + */ +static void _brcms_timer(struct work_struct *work) +{ + struct brcms_timer *t = container_of(work, struct brcms_timer, + dly_wrk.work); + + spin_lock_bh(&t->wl->lock); + + if (t->set) { + if (t->periodic) { + atomic_inc(&t->wl->callbacks); + ieee80211_queue_delayed_work(t->wl->pub->ieee_hw, + &t->dly_wrk, + msecs_to_jiffies(t->ms)); + } else { + t->set = false; + } + + t->fn(t->arg); + } + + atomic_dec(&t->wl->callbacks); + + spin_unlock_bh(&t->wl->lock); +} + +/* + * Adds a timer to the list. Caller supplies a timer function. + * Is called from wlc. + * + * precondition: perimeter lock has been acquired + */ +struct brcms_timer *brcms_init_timer(struct brcms_info *wl, + void (*fn) (void *arg), + void *arg, const char *name) +{ + struct brcms_timer *t; + + t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC); + if (!t) + return NULL; + + INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer); + t->wl = wl; + t->fn = fn; + t->arg = arg; + t->next = wl->timers; + wl->timers = t; + +#ifdef DEBUG + t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC); + if (t->name) + strcpy(t->name, name); +#endif + + return t; +} + +/* + * 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 brcms_add_timer(struct brcms_timer *t, uint ms, int periodic) +{ + struct ieee80211_hw *hw = t->wl->pub->ieee_hw; + +#ifdef DEBUG + if (t->set) + brcms_dbg_info(t->wl->wlc->hw->d11core, + "%s: Already set. Name: %s, per %d\n", + __func__, t->name, periodic); +#endif + t->ms = ms; + t->periodic = (bool) periodic; + if (!t->set) { + t->set = true; + atomic_inc(&t->wl->callbacks); + } + + ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms)); +} + +/* + * return true if timer successfully deleted, false if still pending + * + * precondition: perimeter lock has been acquired + */ +bool brcms_del_timer(struct brcms_timer *t) +{ + if (t->set) { + t->set = false; + if (!cancel_delayed_work(&t->dly_wrk)) + return false; + + atomic_dec(&t->wl->callbacks); + } + + return true; +} + +/* + * precondition: perimeter lock has been acquired + */ +void brcms_free_timer(struct brcms_timer *t) +{ + struct brcms_info *wl = t->wl; + struct brcms_timer *tmp; + + /* delete the timer in case it is active */ + brcms_del_timer(t); + + if (wl->timers == t) { + wl->timers = wl->timers->next; +#ifdef DEBUG + kfree(t->name); +#endif + kfree(t); + return; + + } + + tmp = wl->timers; + while (tmp) { + if (tmp->next == t) { + tmp->next = t->next; +#ifdef DEBUG + kfree(t->name); +#endif + kfree(t); + return; + } + tmp = tmp->next; + } + +} + +/* + * precondition: perimeter lock has been acquired + */ +int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx) +{ + int i, entry; + const u8 *pdata; + struct firmware_hdr *hdr; + for (i = 0; i < wl->fw.fw_cnt; i++) { + hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; + for (entry = 0; entry < wl->fw.hdr_num_entries[i]; + entry++, hdr++) { + u32 len = le32_to_cpu(hdr->len); + if (le32_to_cpu(hdr->idx) == idx) { + pdata = wl->fw.fw_bin[i]->data + + le32_to_cpu(hdr->offset); + *pbuf = kmemdup(pdata, len, GFP_ATOMIC); + if (*pbuf == NULL) + goto fail; + + return 0; + } + } + } + brcms_err(wl->wlc->hw->d11core, + "ERROR: ucode buf tag:%d can not be found!\n", idx); + *pbuf = NULL; +fail: + return -ENODATA; +} + +/* + * Precondition: Since this function is called in brcms_bcma_probe() context, + * no locking is required. + */ +int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx) +{ + int i, entry; + const u8 *pdata; + struct firmware_hdr *hdr; + for (i = 0; i < wl->fw.fw_cnt; i++) { + hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; + for (entry = 0; entry < wl->fw.hdr_num_entries[i]; + entry++, hdr++) { + if (le32_to_cpu(hdr->idx) == idx) { + pdata = wl->fw.fw_bin[i]->data + + le32_to_cpu(hdr->offset); + if (le32_to_cpu(hdr->len) != 4) { + brcms_err(wl->wlc->hw->d11core, + "ERROR: fw hdr len\n"); + return -ENOMSG; + } + *n_bytes = le32_to_cpu(*((__le32 *) pdata)); + return 0; + } + } + } + brcms_err(wl->wlc->hw->d11core, + "ERROR: ucode tag:%d can not be found!\n", idx); + return -ENOMSG; +} + +/* + * precondition: can both be called locked and unlocked + */ +void brcms_ucode_free_buf(void *p) +{ + kfree(p); +} + +/* + * checks validity of all firmware images loaded from user space + * + * Precondition: Since this function is called in brcms_bcma_probe() context, + * no locking is required. + */ +int brcms_check_firmwares(struct brcms_info *wl) +{ + int i; + int entry; + int rc = 0; + const struct firmware *fw; + const struct firmware *fw_hdr; + struct firmware_hdr *ucode_hdr; + for (i = 0; i < MAX_FW_IMAGES && 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 firmware_hdr)) { + wiphy_err(wl->wiphy, "%s: non integral fw hdr file " + "size %zu/%zu\n", __func__, fw_hdr->size, + sizeof(struct firmware_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 firmware_hdr *)fw_hdr->data; + for (entry = 0; entry < wl->fw.hdr_num_entries[i] && + !rc; entry++, ucode_hdr++) { + if (le32_to_cpu(ucode_hdr->offset) + + le32_to_cpu(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 brcms_rfkill_set_hw_state(struct brcms_info *wl) +{ + bool blocked = brcms_c_check_radio_disabled(wl->wlc); + + spin_unlock_bh(&wl->lock); + wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); + if (blocked) + wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy); + spin_lock_bh(&wl->lock); + return blocked; +} |