| /* |
| * 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_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), |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(bcma, brcms_coreid_table); |
| |
| #if defined(CPTCFG_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_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 ieee80211_vif *vif, |
| const u8 *mac_addr) |
| { |
| 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 ieee80211_vif *vif) |
| { |
| 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, |
| struct ieee80211_ampdu_params *params) |
| { |
| struct brcms_info *wl = hw->priv; |
| struct scb *scb = &wl->wlc->pri_scb; |
| int status; |
| struct ieee80211_sta *sta = params->sta; |
| enum ieee80211_ampdu_mlme_action action = params->action; |
| u16 tid = params->tid; |
| u8 buf_size = params->buf_size; |
| |
| 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) |
| { |
| ieee80211_hw_set(hw, AMPDU_AGGREGATION); |
| ieee80211_hw_set(hw, SIGNAL_DBM); |
| ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); |
| |
| 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 = kstrdup(name, GFP_ATOMIC); |
| #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; |
| } |