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OpenCloudOS-Kernel/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c

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/*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define __UNDEF_NO_VERSION__
#include <linux/etherdevice.h>
#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/firmware.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <net/mac80211.h>
#include <defs.h>
#include "nicpci.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"
#define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */
/* Flags we support */
#define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
FIF_ALLMULTI | \
FIF_FCSFAIL | \
FIF_PLCPFAIL | \
FIF_CONTROL | \
FIF_OTHER_BSS | \
FIF_BCN_PRBRESP_PROMISC)
#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");
/* recognized PCI IDs */
static DEFINE_PCI_DEVICE_TABLE(brcms_pci_id_table) = {
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4357) }, /* 43225 2G */
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4353) }, /* 43224 DUAL */
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4727) }, /* 4313 DUAL */
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x0576) }, /* 43224 Ven */
{0}
};
MODULE_DEVICE_TABLE(pci, brcms_pci_id_table);
#ifdef BCMDBG
static int msglevel = 0xdeadbeef;
module_param(msglevel, int, 0);
#endif /* BCMDBG */
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_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_NO_HT40PLUS),
CHAN2GHZ(13, 2472,
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_NO_HT40PLUS),
CHAN2GHZ(14, 2484,
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
};
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_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
CHAN5GHZ(56,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
CHAN5GHZ(60,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
CHAN5GHZ(64,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
/* MID */
CHAN5GHZ(100,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
CHAN5GHZ(104,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
CHAN5GHZ(108,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
CHAN5GHZ(112,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
CHAN5GHZ(116,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
CHAN5GHZ(120,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
CHAN5GHZ(124,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
CHAN5GHZ(128,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
CHAN5GHZ(132,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
CHAN5GHZ(136,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
CHAN5GHZ(140,
IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
IEEE80211_CHAN_NO_HT40MINUS),
/* UNII-3 */
CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
};
/*
* 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;
}
}
static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct brcms_info *wl = hw->priv;
spin_lock_bh(&wl->lock);
if (!wl->pub->up) {
wiphy_err(wl->wiphy, "ops->tx called while down\n");
kfree_skb(skb);
goto done;
}
brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
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);
spin_lock_bh(&wl->lock);
/* avoid acknowledging frames before a non-monitor device is added */
wl->mute_tx = true;
if (!wl->pub->up)
err = brcms_up(wl);
else
err = -ENODEV;
spin_unlock_bh(&wl->lock);
if (err != 0)
wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
err);
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->vendorid,
wl->wlc->hw->deviceid);
spin_unlock_bh(&wl->lock);
if (!status) {
wiphy_err(wl->wiphy,
"wl: brcms_ops_stop: chipmatch failed\n");
return;
}
/* 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 for now */
if (vif->type != NL80211_IFTYPE_STATION) {
wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
" STA for now\n", __func__, vif->type);
return -EOPNOTSUPP;
}
wl->mute_tx = false;
brcms_c_mute(wl->wlc, false);
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;
int err = 0;
int new_int;
struct wiphy *wiphy = hw->wiphy;
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)
wiphy_err(wiphy, "%s: change monitor mode: %s (implement)\n",
__func__, conf->flags & IEEE80211_CONF_MONITOR ?
"true" : "false");
if (changed & IEEE80211_CONF_CHANGE_PS)
wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
__func__, conf->flags & IEEE80211_CONF_PS ?
"true" : "false");
if (changed & IEEE80211_CONF_CHANGE_POWER) {
err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
if (err < 0) {
wiphy_err(wiphy, "%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)
wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
"\n", __func__, conf->power_level,
new_int);
}
if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
if (conf->channel_type == NL80211_CHAN_HT20 ||
conf->channel_type == NL80211_CHAN_NO_HT)
err = brcms_c_set_channel(wl->wlc,
conf->channel->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 wiphy *wiphy = hw->wiphy;
if (changed & BSS_CHANGED_ASSOC) {
/* association status changed (associated/disassociated)
* also implies a change in the AID.
*/
wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
__func__, info->assoc ? "" : "dis");
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)
wiphy_err(wiphy, "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_BEACON)
/* Beacon data changed, retrieve new beacon (beaconing modes) */
wiphy_err(wiphy, "%s: beacon changed\n", __func__);
if (changed & BSS_CHANGED_BEACON_ENABLED) {
/* Beaconing should be enabled/disabled (beaconing modes) */
wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
info->enable_beacon ? "true" : "false");
}
if (changed & BSS_CHANGED_CQM) {
/* Connection quality monitor config changed */
wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
" (implement)\n", __func__, info->cqm_rssi_thold,
info->cqm_rssi_hyst);
}
if (changed & BSS_CHANGED_IBSS) {
/* IBSS join status changed */
wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
info->ibss_joined ? "true" : "false");
}
if (changed & BSS_CHANGED_ARP_FILTER) {
/* Hardware ARP filter address list or state changed */
wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
" (implement)\n", __func__, info->arp_filter_enabled ?
"true" : "false", info->arp_addr_cnt);
}
if (changed & BSS_CHANGED_QOS) {
/*
* QoS for this association was enabled/disabled.
* Note that it is only ever disabled for station mode.
*/
wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
info->qos ? "true" : "false");
}
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 wiphy *wiphy = hw->wiphy;
changed_flags &= MAC_FILTERS;
*total_flags &= MAC_FILTERS;
if (changed_flags & FIF_PROMISC_IN_BSS)
wiphy_err(wiphy, "FIF_PROMISC_IN_BSS\n");
if (changed_flags & FIF_ALLMULTI)
wiphy_err(wiphy, "FIF_ALLMULTI\n");
if (changed_flags & FIF_FCSFAIL)
wiphy_err(wiphy, "FIF_FCSFAIL\n");
if (changed_flags & FIF_PLCPFAIL)
wiphy_err(wiphy, "FIF_PLCPFAIL\n");
if (changed_flags & FIF_CONTROL)
wiphy_err(wiphy, "FIF_CONTROL\n");
if (changed_flags & FIF_OTHER_BSS)
wiphy_err(wiphy, "FIF_OTHER_BSS\n");
if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
spin_lock_bh(&wl->lock);
if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
wl->pub->mac80211_state |= MAC80211_PROMISC_BCNS;
brcms_c_mac_bcn_promisc_change(wl->wlc, 1);
} else {
brcms_c_mac_bcn_promisc_change(wl->wlc, 0);
wl->pub->mac80211_state &= ~MAC80211_PROMISC_BCNS;
}
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) {
wiphy_err(wl->wiphy, "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:
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:
wiphy_err(wl->wiphy, "%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 void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
{
struct brcms_info *wl = hw->priv;
no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
/* wait for packet queue and dma fifos to run empty */
spin_lock_bh(&wl->lock);
brcms_c_wait_for_tx_completion(wl->wlc, drop);
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,
};
/*
* is called in brcms_pci_probe() context, therefore no locking required.
*/
static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
{
return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
}
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);
}
/*
* 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 pci_dev *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;
return brcms_ucode_data_init(wl, &wl->ucode);
}
/*
* 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]);
}
}
/**
* 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_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 BCMDBG
kfree(t->name);
#endif
kfree(t);
}
/*
* unregister_netdev() calls get_stats() which may read chip
* registers so we cannot unmap the chip registers until
* after calling unregister_netdev() .
*/
if (wl->regsva)
iounmap(wl->regsva);
wl->regsva = NULL;
}
/*
* called from both kernel as from this kernel module (error flow on attach)
* precondition: perimeter lock is not acquired.
*/
static void brcms_remove(struct pci_dev *pdev)
{
struct ieee80211_hw *hw = pci_get_drvdata(pdev);
struct brcms_info *wl = hw->priv;
if (wl->wlc) {
wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
ieee80211_unregister_hw(hw);
}
pci_disable_device(pdev);
brcms_free(wl);
pci_set_drvdata(pdev, NULL);
ieee80211_free_hw(hw);
}
static irqreturn_t brcms_isr(int irq, void *dev_id)
{
struct brcms_info *wl;
bool ours, wantdpc;
wl = (struct brcms_info *) dev_id;
spin_lock(&wl->isr_lock);
/* call common first level interrupt handler */
ours = brcms_c_isr(wl->wlc, &wantdpc);
if (ours) {
/* if more to do... */
if (wantdpc) {
/* ...and call the second level interrupt handler */
/* schedule dpc */
tasklet_schedule(&wl->tasklet);
}
}
spin_unlock(&wl->isr_lock);
return IRQ_RETVAL(ours);
}
/*
* 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->channel_change_time = 7 * 1000;
hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
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_pci_probe() context, therefore no locking required.
*/
static struct brcms_info *brcms_attach(u16 vendor, u16 device,
resource_size_t regs,
struct pci_dev *btparam, uint irq)
{
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 = pci_get_drvdata(btparam); /* btparam == pdev */
if (hw != NULL)
wl = hw->priv;
if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
return NULL;
wl->wiphy = hw->wiphy;
atomic_set(&wl->callbacks, 0);
/* setup the bottom half handler */
tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
wl->regsva = ioremap_nocache(regs, PCI_BAR0_WINSZ);
if (wl->regsva == NULL) {
wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit);
goto fail;
}
spin_lock_init(&wl->lock);
spin_lock_init(&wl->isr_lock);
/* prepare ucode */
if (brcms_request_fw(wl, btparam) < 0) {
wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
"%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
brcms_release_fw(wl);
brcms_remove(btparam);
return NULL;
}
/* common load-time initialization */
wl->wlc = brcms_c_attach(wl, vendor, device, unit, false,
wl->regsva, btparam, &err);
brcms_release_fw(wl);
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(irq, brcms_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) {
wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
goto fail;
}
wl->irq = 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;
}
memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
if (WARN_ON(!is_valid_ether_addr(perm)))
goto fail;
SET_IEEE80211_PERM_ADDR(hw, perm);
err = ieee80211_register_hw(hw);
if (err)
wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
"%d\n", __func__, err);
if (wl->pub->srom_ccode[0])
err = brcms_set_hint(wl, wl->pub->srom_ccode);
else
err = brcms_set_hint(wl, "US");
if (err)
wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
__func__, err);
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 __devinit
brcms_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int rc;
struct brcms_info *wl;
struct ieee80211_hw *hw;
u32 val;
dev_info(&pdev->dev, "bus %d slot %d func %d irq %d\n",
pdev->bus->number, PCI_SLOT(pdev->devfn),
PCI_FUNC(pdev->devfn), pdev->irq);
if ((pdev->vendor != PCI_VENDOR_ID_BROADCOM) ||
((pdev->device != 0x0576) &&
((pdev->device & 0xff00) != 0x4300) &&
((pdev->device & 0xff00) != 0x4700) &&
((pdev->device < 43000) || (pdev->device > 43999))))
return -ENODEV;
rc = pci_enable_device(pdev);
if (rc) {
pr_err("%s: Cannot enable device %d-%d_%d\n",
__func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
PCI_FUNC(pdev->devfn));
return -ENODEV;
}
pci_set_master(pdev);
pci_read_config_dword(pdev, 0x40, &val);
if ((val & 0x0000ff00) != 0)
pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
if (!hw) {
pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
return -ENOMEM;
}
SET_IEEE80211_DEV(hw, &pdev->dev);
pci_set_drvdata(pdev, hw);
memset(hw->priv, 0, sizeof(*wl));
wl = brcms_attach(pdev->vendor, pdev->device,
pci_resource_start(pdev, 0), pdev,
pdev->irq);
if (!wl) {
pr_err("%s: %s: brcms_attach failed!\n", KBUILD_MODNAME,
__func__);
return -ENODEV;
}
return 0;
}
static int brcms_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct brcms_info *wl;
struct ieee80211_hw *hw;
hw = pci_get_drvdata(pdev);
wl = hw->priv;
if (!wl) {
wiphy_err(wl->wiphy,
"brcms_suspend: pci_get_drvdata failed\n");
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);
pci_save_state(pdev);
pci_disable_device(pdev);
return pci_set_power_state(pdev, PCI_D3hot);
}
static int brcms_resume(struct pci_dev *pdev)
{
struct brcms_info *wl;
struct ieee80211_hw *hw;
int err = 0;
u32 val;
hw = pci_get_drvdata(pdev);
wl = hw->priv;
if (!wl) {
wiphy_err(wl->wiphy,
"wl: brcms_resume: pci_get_drvdata failed\n");
return -ENODEV;
}
err = pci_set_power_state(pdev, PCI_D0);
if (err)
return err;
pci_restore_state(pdev);
err = pci_enable_device(pdev);
if (err)
return err;
pci_set_master(pdev);
pci_read_config_dword(pdev, 0x40, &val);
if ((val & 0x0000ff00) != 0)
pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
/*
* done. driver will be put in up state
* in brcms_ops_add_interface() call.
*/
return err;
}
static struct pci_driver brcms_pci_driver = {
.name = KBUILD_MODNAME,
.probe = brcms_pci_probe,
.suspend = brcms_suspend,
.resume = brcms_resume,
.remove = __devexit_p(brcms_remove),
.id_table = brcms_pci_id_table,
};
/**
* This is the main entry point for the WL driver.
*
* This function determines if a device pointed to by pdev is a WL device,
* and if so, performs a brcms_attach() on it.
*
*/
static int __init brcms_module_init(void)
{
int error = -ENODEV;
#ifdef BCMDBG
if (msglevel != 0xdeadbeef)
brcm_msg_level = msglevel;
#endif /* BCMDBG */
error = pci_register_driver(&brcms_pci_driver);
if (!error)
return 0;
return error;
}
/**
* This function unloads the WL driver from the system.
*
* This function unconditionally unloads the WL driver module from the
* system.
*
*/
static void __exit brcms_module_exit(void)
{
pci_unregister_driver(&brcms_pci_driver);
}
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)
{
wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
}
/*
* precondition: perimeter lock has been acquired
*/
void brcms_init(struct brcms_info *wl)
{
BCMMSG(wl->pub->ieee_hw->wiphy, "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)
{
BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
brcms_c_reset(wl->wlc);
/* dpc will not be rescheduled */
wl->resched = 0;
return 0;
}
void brcms_fatal_error(struct brcms_info *wl)
{
wiphy_err(wl->wlc->wiphy, "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 BCMDBG
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 BCMDBG
if (t->set)
wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
__func__, t->name, periodic);
#endif
t->ms = ms;
t->periodic = (bool) periodic;
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 BCMDBG
kfree(t->name);
#endif
kfree(t);
return;
}
tmp = wl->timers;
while (tmp) {
if (tmp->next == t) {
tmp->next = t->next;
#ifdef BCMDBG
kfree(t->name);
#endif
kfree(t);
return;
}
tmp = tmp->next;
}
}
/*
* 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;
}
}
}
wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
idx);
*pbuf = NULL;
fail:
return -ENODATA;
}
/*
* Precondition: Since this function is called in brcms_pci_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) {
wiphy_err(wl->wiphy,
"ERROR: fw hdr len\n");
return -ENOMSG;
}
*n_bytes = le32_to_cpu(*((__le32 *) pdata));
return 0;
}
}
}
wiphy_err(wl->wiphy, "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_pci_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;
}
/*
* precondition: perimeter lock has been acquired
*/
void brcms_msleep(struct brcms_info *wl, uint ms)
{
spin_unlock_bh(&wl->lock);
msleep(ms);
spin_lock_bh(&wl->lock);
}
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