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linux/drivers/net/wireless/ath/ath9k/init.c

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/*
* Copyright (c) 2008-2011 Atheros Communications Inc.
*
* 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 pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/ath9k_platform.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_net.h>
#include <linux/relay.h>
#include <net/ieee80211_radiotap.h>
#include "ath9k.h"
struct ath9k_eeprom_ctx {
struct completion complete;
struct ath_hw *ah;
};
static char *dev_info = "ath9k";
MODULE_AUTHOR("Atheros Communications");
MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
MODULE_LICENSE("Dual BSD/GPL");
static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
module_param_named(debug, ath9k_debug, uint, 0);
MODULE_PARM_DESC(debug, "Debugging mask");
int ath9k_modparam_nohwcrypt;
module_param_named(nohwcrypt, ath9k_modparam_nohwcrypt, int, 0444);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
int ath9k_led_blink;
module_param_named(blink, ath9k_led_blink, int, 0444);
MODULE_PARM_DESC(blink, "Enable LED blink on activity");
static int ath9k_led_active_high = -1;
module_param_named(led_active_high, ath9k_led_active_high, int, 0444);
MODULE_PARM_DESC(led_active_high, "Invert LED polarity");
static int ath9k_btcoex_enable;
module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444);
MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence");
static int ath9k_bt_ant_diversity;
module_param_named(bt_ant_diversity, ath9k_bt_ant_diversity, int, 0444);
MODULE_PARM_DESC(bt_ant_diversity, "Enable WLAN/BT RX antenna diversity");
static int ath9k_ps_enable;
module_param_named(ps_enable, ath9k_ps_enable, int, 0444);
MODULE_PARM_DESC(ps_enable, "Enable WLAN PowerSave");
#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
int ath9k_use_chanctx;
module_param_named(use_chanctx, ath9k_use_chanctx, int, 0444);
MODULE_PARM_DESC(use_chanctx, "Enable channel context for concurrency");
#endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
bool is_ath9k_unloaded;
#ifdef CONFIG_MAC80211_LEDS
static const struct ieee80211_tpt_blink ath9k_tpt_blink[] = {
{ .throughput = 0 * 1024, .blink_time = 334 },
{ .throughput = 1 * 1024, .blink_time = 260 },
{ .throughput = 5 * 1024, .blink_time = 220 },
{ .throughput = 10 * 1024, .blink_time = 190 },
{ .throughput = 20 * 1024, .blink_time = 170 },
{ .throughput = 50 * 1024, .blink_time = 150 },
{ .throughput = 70 * 1024, .blink_time = 130 },
{ .throughput = 100 * 1024, .blink_time = 110 },
{ .throughput = 200 * 1024, .blink_time = 80 },
{ .throughput = 300 * 1024, .blink_time = 50 },
};
#endif
static void ath9k_deinit_softc(struct ath_softc *sc);
static void ath9k_op_ps_wakeup(struct ath_common *common)
{
ath9k_ps_wakeup((struct ath_softc *) common->priv);
}
static void ath9k_op_ps_restore(struct ath_common *common)
{
ath9k_ps_restore((struct ath_softc *) common->priv);
}
static const struct ath_ps_ops ath9k_ps_ops = {
.wakeup = ath9k_op_ps_wakeup,
.restore = ath9k_op_ps_restore,
};
/*
* Read and write, they both share the same lock. We do this to serialize
* reads and writes on Atheros 802.11n PCI devices only. This is required
* as the FIFO on these devices can only accept sanely 2 requests.
*/
static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset)
{
struct ath_hw *ah = hw_priv;
struct ath_common *common = ath9k_hw_common(ah);
struct ath_softc *sc = (struct ath_softc *) common->priv;
if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) {
unsigned long flags;
spin_lock_irqsave(&sc->sc_serial_rw, flags);
iowrite32(val, sc->mem + reg_offset);
spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
} else
iowrite32(val, sc->mem + reg_offset);
}
static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset)
{
struct ath_hw *ah = hw_priv;
struct ath_common *common = ath9k_hw_common(ah);
struct ath_softc *sc = (struct ath_softc *) common->priv;
u32 val;
if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) {
unsigned long flags;
spin_lock_irqsave(&sc->sc_serial_rw, flags);
val = ioread32(sc->mem + reg_offset);
spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
} else
val = ioread32(sc->mem + reg_offset);
return val;
}
static void ath9k_multi_ioread32(void *hw_priv, u32 *addr,
u32 *val, u16 count)
{
int i;
for (i = 0; i < count; i++)
val[i] = ath9k_ioread32(hw_priv, addr[i]);
}
static unsigned int __ath9k_reg_rmw(struct ath_softc *sc, u32 reg_offset,
u32 set, u32 clr)
{
u32 val;
val = ioread32(sc->mem + reg_offset);
val &= ~clr;
val |= set;
iowrite32(val, sc->mem + reg_offset);
return val;
}
static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr)
{
struct ath_hw *ah = hw_priv;
struct ath_common *common = ath9k_hw_common(ah);
struct ath_softc *sc = (struct ath_softc *) common->priv;
unsigned long uninitialized_var(flags);
u32 val;
if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) {
spin_lock_irqsave(&sc->sc_serial_rw, flags);
val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
} else
val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
return val;
}
/**************************/
/* Initialization */
/**************************/
static void ath9k_reg_notifier(struct wiphy *wiphy,
struct regulatory_request *request)
{
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
struct ath_softc *sc = hw->priv;
struct ath_hw *ah = sc->sc_ah;
struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
ath_reg_notifier_apply(wiphy, request, reg);
/* Set tx power */
if (!ah->curchan)
return;
sc->cur_chan->txpower = 2 * ah->curchan->chan->max_power;
ath9k_ps_wakeup(sc);
ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false);
ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower,
sc->cur_chan->txpower,
&sc->cur_chan->cur_txpower);
/* synchronize DFS detector if regulatory domain changed */
if (sc->dfs_detector != NULL)
sc->dfs_detector->set_dfs_domain(sc->dfs_detector,
request->dfs_region);
ath9k_ps_restore(sc);
}
/*
* This function will allocate both the DMA descriptor structure, and the
* buffers it contains. These are used to contain the descriptors used
* by the system.
*/
int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
struct list_head *head, const char *name,
int nbuf, int ndesc, bool is_tx)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
u8 *ds;
int i, bsize, desc_len;
ath_dbg(common, CONFIG, "%s DMA: %u buffers %u desc/buf\n",
name, nbuf, ndesc);
INIT_LIST_HEAD(head);
if (is_tx)
desc_len = sc->sc_ah->caps.tx_desc_len;
else
desc_len = sizeof(struct ath_desc);
/* ath_desc must be a multiple of DWORDs */
if ((desc_len % 4) != 0) {
ath_err(common, "ath_desc not DWORD aligned\n");
BUG_ON((desc_len % 4) != 0);
return -ENOMEM;
}
dd->dd_desc_len = desc_len * nbuf * ndesc;
/*
* Need additional DMA memory because we can't use
* descriptors that cross the 4K page boundary. Assume
* one skipped descriptor per 4K page.
*/
if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) {
u32 ndesc_skipped =
ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len);
u32 dma_len;
while (ndesc_skipped) {
dma_len = ndesc_skipped * desc_len;
dd->dd_desc_len += dma_len;
ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len);
}
}
/* allocate descriptors */
dd->dd_desc = dmam_alloc_coherent(sc->dev, dd->dd_desc_len,
&dd->dd_desc_paddr, GFP_KERNEL);
if (!dd->dd_desc)
return -ENOMEM;
ds = dd->dd_desc;
ath_dbg(common, CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n",
name, ds, (u32) dd->dd_desc_len,
ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len);
/* allocate buffers */
if (is_tx) {
struct ath_buf *bf;
bsize = sizeof(struct ath_buf) * nbuf;
bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL);
if (!bf)
return -ENOMEM;
for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) {
bf->bf_desc = ds;
bf->bf_daddr = DS2PHYS(dd, ds);
if (!(sc->sc_ah->caps.hw_caps &
ATH9K_HW_CAP_4KB_SPLITTRANS)) {
/*
* Skip descriptor addresses which can cause 4KB
* boundary crossing (addr + length) with a 32 dword
* descriptor fetch.
*/
while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
BUG_ON((caddr_t) bf->bf_desc >=
((caddr_t) dd->dd_desc +
dd->dd_desc_len));
ds += (desc_len * ndesc);
bf->bf_desc = ds;
bf->bf_daddr = DS2PHYS(dd, ds);
}
}
list_add_tail(&bf->list, head);
}
} else {
struct ath_rxbuf *bf;
bsize = sizeof(struct ath_rxbuf) * nbuf;
bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL);
if (!bf)
return -ENOMEM;
for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) {
bf->bf_desc = ds;
bf->bf_daddr = DS2PHYS(dd, ds);
if (!(sc->sc_ah->caps.hw_caps &
ATH9K_HW_CAP_4KB_SPLITTRANS)) {
/*
* Skip descriptor addresses which can cause 4KB
* boundary crossing (addr + length) with a 32 dword
* descriptor fetch.
*/
while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
BUG_ON((caddr_t) bf->bf_desc >=
((caddr_t) dd->dd_desc +
dd->dd_desc_len));
ds += (desc_len * ndesc);
bf->bf_desc = ds;
bf->bf_daddr = DS2PHYS(dd, ds);
}
}
list_add_tail(&bf->list, head);
}
}
return 0;
}
static int ath9k_init_queues(struct ath_softc *sc)
{
int i = 0;
sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah);
sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0);
ath_cabq_update(sc);
sc->tx.uapsdq = ath_txq_setup(sc, ATH9K_TX_QUEUE_UAPSD, 0);
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i);
sc->tx.txq_map[i]->mac80211_qnum = i;
}
return 0;
}
static void ath9k_init_misc(struct ath_softc *sc)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
int i = 0;
setup_timer(&common->ani.timer, ath_ani_calibrate, (unsigned long)sc);
common->last_rssi = ATH_RSSI_DUMMY_MARKER;
memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN);
sc->beacon.slottime = 9;
for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++)
sc->beacon.bslot[i] = NULL;
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT;
sc->spec_priv.ah = sc->sc_ah;
sc->spec_priv.spec_config.enabled = 0;
sc->spec_priv.spec_config.short_repeat = true;
sc->spec_priv.spec_config.count = 8;
sc->spec_priv.spec_config.endless = false;
sc->spec_priv.spec_config.period = 0xFF;
sc->spec_priv.spec_config.fft_period = 0xF;
}
static void ath9k_init_pcoem_platform(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath9k_hw_capabilities *pCap = &ah->caps;
struct ath_common *common = ath9k_hw_common(ah);
if (!IS_ENABLED(CONFIG_ATH9K_PCOEM))
return;
if (common->bus_ops->ath_bus_type != ATH_PCI)
return;
if (sc->driver_data & (ATH9K_PCI_CUS198 |
ATH9K_PCI_CUS230)) {
ah->config.xlna_gpio = 9;
ah->config.xatten_margin_cfg = true;
ah->config.alt_mingainidx = true;
ah->config.ant_ctrl_comm2g_switch_enable = 0x000BBB88;
sc->ant_comb.low_rssi_thresh = 20;
sc->ant_comb.fast_div_bias = 3;
ath_info(common, "Set parameters for %s\n",
(sc->driver_data & ATH9K_PCI_CUS198) ?
"CUS198" : "CUS230");
}
if (sc->driver_data & ATH9K_PCI_CUS217)
ath_info(common, "CUS217 card detected\n");
if (sc->driver_data & ATH9K_PCI_CUS252)
ath_info(common, "CUS252 card detected\n");
if (sc->driver_data & ATH9K_PCI_AR9565_1ANT)
ath_info(common, "WB335 1-ANT card detected\n");
if (sc->driver_data & ATH9K_PCI_AR9565_2ANT)
ath_info(common, "WB335 2-ANT card detected\n");
if (sc->driver_data & ATH9K_PCI_KILLER)
ath_info(common, "Killer Wireless card detected\n");
/*
* Some WB335 cards do not support antenna diversity. Since
* we use a hardcoded value for AR9565 instead of using the
* EEPROM/OTP data, remove the combining feature from
* the HW capabilities bitmap.
*/
if (sc->driver_data & (ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_AR9565_2ANT)) {
if (!(sc->driver_data & ATH9K_PCI_BT_ANT_DIV))
pCap->hw_caps &= ~ATH9K_HW_CAP_ANT_DIV_COMB;
}
if (sc->driver_data & ATH9K_PCI_BT_ANT_DIV) {
pCap->hw_caps |= ATH9K_HW_CAP_BT_ANT_DIV;
ath_info(common, "Set BT/WLAN RX diversity capability\n");
}
if (sc->driver_data & ATH9K_PCI_D3_L1_WAR) {
ah->config.pcie_waen = 0x0040473b;
ath_info(common, "Enable WAR for ASPM D3/L1\n");
}
/*
* The default value of pll_pwrsave is 1.
* For certain AR9485 cards, it is set to 0.
* For AR9462, AR9565 it's set to 7.
*/
ah->config.pll_pwrsave = 1;
if (sc->driver_data & ATH9K_PCI_NO_PLL_PWRSAVE) {
ah->config.pll_pwrsave = 0;
ath_info(common, "Disable PLL PowerSave\n");
}
if (sc->driver_data & ATH9K_PCI_LED_ACT_HI)
ah->config.led_active_high = true;
}
static void ath9k_eeprom_request_cb(const struct firmware *eeprom_blob,
void *ctx)
{
struct ath9k_eeprom_ctx *ec = ctx;
if (eeprom_blob)
ec->ah->eeprom_blob = eeprom_blob;
complete(&ec->complete);
}
static int ath9k_eeprom_request(struct ath_softc *sc, const char *name)
{
struct ath9k_eeprom_ctx ec;
struct ath_hw *ah = sc->sc_ah;
int err;
/* try to load the EEPROM content asynchronously */
init_completion(&ec.complete);
ec.ah = sc->sc_ah;
err = request_firmware_nowait(THIS_MODULE, 1, name, sc->dev, GFP_KERNEL,
&ec, ath9k_eeprom_request_cb);
if (err < 0) {
ath_err(ath9k_hw_common(ah),
"EEPROM request failed\n");
return err;
}
wait_for_completion(&ec.complete);
if (!ah->eeprom_blob) {
ath_err(ath9k_hw_common(ah),
"Unable to load EEPROM file %s\n", name);
return -EINVAL;
}
return 0;
}
static void ath9k_eeprom_release(struct ath_softc *sc)
{
release_firmware(sc->sc_ah->eeprom_blob);
}
static int ath9k_init_platform(struct ath_softc *sc)
{
struct ath9k_platform_data *pdata = sc->dev->platform_data;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
int ret;
if (!pdata)
return 0;
if (!pdata->use_eeprom) {
ah->ah_flags &= ~AH_USE_EEPROM;
ah->gpio_mask = pdata->gpio_mask;
ah->gpio_val = pdata->gpio_val;
ah->led_pin = pdata->led_pin;
ah->is_clk_25mhz = pdata->is_clk_25mhz;
ah->get_mac_revision = pdata->get_mac_revision;
ah->external_reset = pdata->external_reset;
ah->disable_2ghz = pdata->disable_2ghz;
ah->disable_5ghz = pdata->disable_5ghz;
if (!pdata->endian_check)
ah->ah_flags |= AH_NO_EEP_SWAP;
}
if (pdata->eeprom_name) {
ret = ath9k_eeprom_request(sc, pdata->eeprom_name);
if (ret)
return ret;
}
if (pdata->led_active_high)
ah->config.led_active_high = true;
if (pdata->tx_gain_buffalo)
ah->config.tx_gain_buffalo = true;
if (pdata->macaddr)
ether_addr_copy(common->macaddr, pdata->macaddr);
return 0;
}
static int ath9k_of_init(struct ath_softc *sc)
{
struct device_node *np = sc->dev->of_node;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
enum ath_bus_type bus_type = common->bus_ops->ath_bus_type;
const char *mac;
char eeprom_name[100];
int ret;
if (!of_device_is_available(np))
return 0;
ath_dbg(common, CONFIG, "parsing configuration from OF node\n");
if (of_property_read_bool(np, "qca,no-eeprom")) {
/* ath9k-eeprom-<bus>-<id>.bin */
scnprintf(eeprom_name, sizeof(eeprom_name),
"ath9k-eeprom-%s-%s.bin",
ath_bus_type_to_string(bus_type), dev_name(ah->dev));
ret = ath9k_eeprom_request(sc, eeprom_name);
if (ret)
return ret;
}
mac = of_get_mac_address(np);
if (mac)
ether_addr_copy(common->macaddr, mac);
ah->ah_flags &= ~AH_USE_EEPROM;
ah->ah_flags |= AH_NO_EEP_SWAP;
return 0;
}
static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
const struct ath_bus_ops *bus_ops)
{
struct ath_hw *ah = NULL;
struct ath9k_hw_capabilities *pCap;
struct ath_common *common;
int ret = 0, i;
int csz = 0;
ah = devm_kzalloc(sc->dev, sizeof(struct ath_hw), GFP_KERNEL);
if (!ah)
return -ENOMEM;
ah->dev = sc->dev;
ah->hw = sc->hw;
ah->hw_version.devid = devid;
ah->ah_flags |= AH_USE_EEPROM;
ah->led_pin = -1;
ah->reg_ops.read = ath9k_ioread32;
ah->reg_ops.multi_read = ath9k_multi_ioread32;
ah->reg_ops.write = ath9k_iowrite32;
ah->reg_ops.rmw = ath9k_reg_rmw;
pCap = &ah->caps;
common = ath9k_hw_common(ah);
/* Will be cleared in ath9k_start() */
set_bit(ATH_OP_INVALID, &common->op_flags);
sc->airtime_flags = (AIRTIME_USE_TX | AIRTIME_USE_RX |
AIRTIME_USE_NEW_QUEUES);
sc->sc_ah = ah;
sc->dfs_detector = dfs_pattern_detector_init(common, NL80211_DFS_UNSET);
sc->tx99_power = MAX_RATE_POWER + 1;
init_waitqueue_head(&sc->tx_wait);
sc->cur_chan = &sc->chanctx[0];
if (!ath9k_is_chanctx_enabled())
sc->cur_chan->hw_queue_base = 0;
common->ops = &ah->reg_ops;
common->bus_ops = bus_ops;
common->ps_ops = &ath9k_ps_ops;
common->ah = ah;
common->hw = sc->hw;
common->priv = sc;
common->debug_mask = ath9k_debug;
common->btcoex_enabled = ath9k_btcoex_enable == 1;
common->disable_ani = false;
/*
* Platform quirks.
*/
ath9k_init_pcoem_platform(sc);
ret = ath9k_init_platform(sc);
if (ret)
return ret;
ret = ath9k_of_init(sc);
if (ret)
return ret;
if (ath9k_led_active_high != -1)
ah->config.led_active_high = ath9k_led_active_high == 1;
/*
* Enable WLAN/BT RX Antenna diversity only when:
*
* - BTCOEX is disabled.
* - the user manually requests the feature.
* - the HW cap is set using the platform data.
*/
if (!common->btcoex_enabled && ath9k_bt_ant_diversity &&
(pCap->hw_caps & ATH9K_HW_CAP_BT_ANT_DIV))
common->bt_ant_diversity = 1;
spin_lock_init(&common->cc_lock);
spin_lock_init(&sc->intr_lock);
spin_lock_init(&sc->sc_serial_rw);
spin_lock_init(&sc->sc_pm_lock);
spin_lock_init(&sc->chan_lock);
mutex_init(&sc->mutex);
tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
tasklet_init(&sc->bcon_tasklet, ath9k_beacon_tasklet,
(unsigned long)sc);
setup_timer(&sc->sleep_timer, ath_ps_full_sleep, (unsigned long)sc);
INIT_WORK(&sc->hw_reset_work, ath_reset_work);
INIT_WORK(&sc->paprd_work, ath_paprd_calibrate);
INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work);
INIT_DELAYED_WORK(&sc->hw_check_work, ath_hw_check_work);
ath9k_init_channel_context(sc);
/*
* Cache line size is used to size and align various
* structures used to communicate with the hardware.
*/
ath_read_cachesize(common, &csz);
common->cachelsz = csz << 2; /* convert to bytes */
/* Initializes the hardware for all supported chipsets */
ret = ath9k_hw_init(ah);
if (ret)
goto err_hw;
ret = ath9k_init_queues(sc);
if (ret)
goto err_queues;
ret = ath9k_init_btcoex(sc);
if (ret)
goto err_btcoex;
ret = ath9k_cmn_init_channels_rates(common);
if (ret)
goto err_btcoex;
ret = ath9k_init_p2p(sc);
if (ret)
goto err_btcoex;
ath9k_cmn_init_crypto(sc->sc_ah);
ath9k_init_misc(sc);
ath_chanctx_init(sc);
ath9k_offchannel_init(sc);
if (common->bus_ops->aspm_init)
common->bus_ops->aspm_init(common);
return 0;
err_btcoex:
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
if (ATH_TXQ_SETUP(sc, i))
ath_tx_cleanupq(sc, &sc->tx.txq[i]);
err_queues:
ath9k_hw_deinit(ah);
err_hw:
ath9k_eeprom_release(sc);
dev_kfree_skb_any(sc->tx99_skb);
return ret;
}
static void ath9k_init_band_txpower(struct ath_softc *sc, int band)
{
struct ieee80211_supported_band *sband;
struct ieee80211_channel *chan;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct cfg80211_chan_def chandef;
int i;
sband = &common->sbands[band];
for (i = 0; i < sband->n_channels; i++) {
chan = &sband->channels[i];
ah->curchan = &ah->channels[chan->hw_value];
cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_HT20);
ath9k_cmn_get_channel(sc->hw, ah, &chandef);
ath9k_hw_set_txpowerlimit(ah, MAX_RATE_POWER, true);
}
}
static void ath9k_init_txpower_limits(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath9k_channel *curchan = ah->curchan;
if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
ath9k_init_band_txpower(sc, NL80211_BAND_2GHZ);
if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
ath9k_init_band_txpower(sc, NL80211_BAND_5GHZ);
ah->curchan = curchan;
}
static const struct ieee80211_iface_limit if_limits[] = {
{ .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) },
{ .max = 8, .types =
#ifdef CONFIG_MAC80211_MESH
BIT(NL80211_IFTYPE_MESH_POINT) |
#endif
BIT(NL80211_IFTYPE_AP) },
{ .max = 1, .types = BIT(NL80211_IFTYPE_P2P_CLIENT) |
BIT(NL80211_IFTYPE_P2P_GO) },
};
#ifdef CONFIG_WIRELESS_WDS
static const struct ieee80211_iface_limit wds_limits[] = {
{ .max = 2048, .types = BIT(NL80211_IFTYPE_WDS) },
};
#endif
#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
static const struct ieee80211_iface_limit if_limits_multi[] = {
{ .max = 2, .types = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_AP) |
BIT(NL80211_IFTYPE_P2P_CLIENT) |
BIT(NL80211_IFTYPE_P2P_GO) },
{ .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
{ .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
};
static const struct ieee80211_iface_combination if_comb_multi[] = {
{
.limits = if_limits_multi,
.n_limits = ARRAY_SIZE(if_limits_multi),
.max_interfaces = 3,
.num_different_channels = 2,
.beacon_int_infra_match = true,
},
};
#endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
static const struct ieee80211_iface_combination if_comb[] = {
{
.limits = if_limits,
.n_limits = ARRAY_SIZE(if_limits),
.max_interfaces = 2048,
.num_different_channels = 1,
.beacon_int_infra_match = true,
#ifdef CONFIG_ATH9K_DFS_CERTIFIED
.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
BIT(NL80211_CHAN_WIDTH_20) |
BIT(NL80211_CHAN_WIDTH_40),
#endif
},
#ifdef CONFIG_WIRELESS_WDS
{
.limits = wds_limits,
.n_limits = ARRAY_SIZE(wds_limits),
.max_interfaces = 2048,
.num_different_channels = 1,
.beacon_int_infra_match = true,
},
#endif
};
#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
static void ath9k_set_mcc_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
if (!ath9k_is_chanctx_enabled())
return;
ieee80211_hw_set(hw, QUEUE_CONTROL);
hw->queues = ATH9K_NUM_TX_QUEUES;
hw->offchannel_tx_hw_queue = hw->queues - 1;
hw->wiphy->interface_modes &= ~ BIT(NL80211_IFTYPE_WDS);
hw->wiphy->iface_combinations = if_comb_multi;
hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb_multi);
hw->wiphy->max_scan_ssids = 255;
hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
hw->wiphy->max_remain_on_channel_duration = 10000;
hw->chanctx_data_size = sizeof(void *);
hw->extra_beacon_tailroom =
sizeof(struct ieee80211_p2p_noa_attr) + 9;
ath_dbg(common, CHAN_CTX, "Use channel contexts\n");
}
#endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
ieee80211_hw_set(hw, SPECTRUM_MGMT);
ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
ieee80211_hw_set(hw, SIGNAL_DBM);
ieee80211_hw_set(hw, RX_INCLUDES_FCS);
ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
if (ath9k_ps_enable)
ieee80211_hw_set(hw, SUPPORTS_PS);
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
ieee80211_hw_set(hw, AMPDU_AGGREGATION);
if (AR_SREV_9280_20_OR_LATER(ah))
hw->radiotap_mcs_details |=
IEEE80211_RADIOTAP_MCS_HAVE_STBC;
}
if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt)
ieee80211_hw_set(hw, MFP_CAPABLE);
hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
NL80211_FEATURE_P2P_GO_CTWIN;
if (!IS_ENABLED(CONFIG_ATH9K_TX99)) {
hw->wiphy->interface_modes =
BIT(NL80211_IFTYPE_P2P_GO) |
BIT(NL80211_IFTYPE_P2P_CLIENT) |
BIT(NL80211_IFTYPE_AP) |
BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_ADHOC) |
BIT(NL80211_IFTYPE_MESH_POINT) |
#ifdef CONFIG_WIRELESS_WDS
BIT(NL80211_IFTYPE_WDS) |
#endif
BIT(NL80211_IFTYPE_OCB);
if (ath9k_is_chanctx_enabled())
hw->wiphy->interface_modes |=
BIT(NL80211_IFTYPE_P2P_DEVICE);
hw->wiphy->iface_combinations = if_comb;
hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
}
hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_5_10_MHZ;
hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
hw->queues = 4;
hw->max_rates = 4;
hw->max_listen_interval = 10;
hw->max_rate_tries = 10;
hw->sta_data_size = sizeof(struct ath_node);
hw->vif_data_size = sizeof(struct ath_vif);
hw->txq_data_size = sizeof(struct ath_atx_tid);
hw->extra_tx_headroom = 4;
hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1;
hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1;
/* single chain devices with rx diversity */
if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
hw->wiphy->available_antennas_rx = BIT(0) | BIT(1);
sc->ant_rx = hw->wiphy->available_antennas_rx;
sc->ant_tx = hw->wiphy->available_antennas_tx;
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
hw->wiphy->bands[NL80211_BAND_2GHZ] =
&common->sbands[NL80211_BAND_2GHZ];
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
hw->wiphy->bands[NL80211_BAND_5GHZ] =
&common->sbands[NL80211_BAND_5GHZ];
#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
ath9k_set_mcc_capab(sc, hw);
#endif
ath9k_init_wow(hw);
ath9k_cmn_reload_chainmask(ah);
SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
}
int ath9k_init_device(u16 devid, struct ath_softc *sc,
const struct ath_bus_ops *bus_ops)
{
struct ieee80211_hw *hw = sc->hw;
struct ath_common *common;
struct ath_hw *ah;
int error = 0;
struct ath_regulatory *reg;
/* Bring up device */
error = ath9k_init_softc(devid, sc, bus_ops);
if (error)
return error;
ah = sc->sc_ah;
common = ath9k_hw_common(ah);
ath9k_set_hw_capab(sc, hw);
/* Initialize regulatory */
error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
ath9k_reg_notifier);
if (error)
goto deinit;
reg = &common->regulatory;
/* Setup TX DMA */
error = ath_tx_init(sc, ATH_TXBUF);
if (error != 0)
goto deinit;
/* Setup RX DMA */
error = ath_rx_init(sc, ATH_RXBUF);
if (error != 0)
goto deinit;
ath9k_init_txpower_limits(sc);
#ifdef CONFIG_MAC80211_LEDS
/* must be initialized before ieee80211_register_hw */
sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink,
ARRAY_SIZE(ath9k_tpt_blink));
#endif
/* Register with mac80211 */
error = ieee80211_register_hw(hw);
if (error)
goto rx_cleanup;
error = ath9k_init_debug(ah);
if (error) {
ath_err(common, "Unable to create debugfs files\n");
goto unregister;
}
/* Handle world regulatory */
if (!ath_is_world_regd(reg)) {
error = regulatory_hint(hw->wiphy, reg->alpha2);
if (error)
goto debug_cleanup;
}
ath_init_leds(sc);
ath_start_rfkill_poll(sc);
return 0;
debug_cleanup:
ath9k_deinit_debug(sc);
unregister:
ieee80211_unregister_hw(hw);
rx_cleanup:
ath_rx_cleanup(sc);
deinit:
ath9k_deinit_softc(sc);
return error;
}
/*****************************/
/* De-Initialization */
/*****************************/
static void ath9k_deinit_softc(struct ath_softc *sc)
{
int i = 0;
ath9k_deinit_p2p(sc);
ath9k_deinit_btcoex(sc);
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
if (ATH_TXQ_SETUP(sc, i))
ath_tx_cleanupq(sc, &sc->tx.txq[i]);
del_timer_sync(&sc->sleep_timer);
ath9k_hw_deinit(sc->sc_ah);
if (sc->dfs_detector != NULL)
sc->dfs_detector->exit(sc->dfs_detector);
ath9k_eeprom_release(sc);
}
void ath9k_deinit_device(struct ath_softc *sc)
{
struct ieee80211_hw *hw = sc->hw;
ath9k_ps_wakeup(sc);
wiphy_rfkill_stop_polling(sc->hw->wiphy);
ath_deinit_leds(sc);
ath9k_ps_restore(sc);
ath9k_deinit_debug(sc);
ath9k_deinit_wow(hw);
ieee80211_unregister_hw(hw);
ath_rx_cleanup(sc);
ath9k_deinit_softc(sc);
}
/************************/
/* Module Hooks */
/************************/
static int __init ath9k_init(void)
{
int error;
error = ath_pci_init();
if (error < 0) {
pr_err("No PCI devices found, driver not installed\n");
error = -ENODEV;
goto err_out;
}
error = ath_ahb_init();
if (error < 0) {
error = -ENODEV;
goto err_pci_exit;
}
return 0;
err_pci_exit:
ath_pci_exit();
err_out:
return error;
}
module_init(ath9k_init);
static void __exit ath9k_exit(void)
{
is_ath9k_unloaded = true;
ath_ahb_exit();
ath_pci_exit();
pr_info("%s: Driver unloaded\n", dev_info);
}
module_exit(ath9k_exit);
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