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googlers / maze / linux / 822316461b15e0207e50ff661f9cf830af116e9f / . / drivers / net / wireless / brcm80211 / brcmsmac / mac80211_if.c
blob: 925034b80e9cf68f14c8af4fca29b8aafdeda433 [file] [log] [blame]
/*
* 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;
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);
if (!wl->ucode.bcm43xx_bomminor) {
err = brcms_request_fw(wl, wl->wlc->hw->d11core);
if (err) {
brcms_remove(wl->wlc->hw->d11core);
return -ENOENT;
}
}
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, 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.
*
* brcms_attach is not defined as static because in the case where no bus
* is defined, wl_attach will never be called, and thus, gcc will issue
* a warning that this function is defined but not used if we declare
* it as static.
*
*
* is called in 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;
}