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// SPDX-License-Identifier: GPL-2.0-only
/*
* mac80211 glue code for mac80211 ST-Ericsson CW1200 drivers
*
* Copyright (c) 2010, ST-Ericsson
* Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
*
* Based on:
* Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
* Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>
* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
*
* Based on:
* - the islsm (softmac prism54) driver, which is:
* Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
* - stlc45xx driver
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
*/
#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/etherdevice.h>
#include <linux/vmalloc.h>
#include <linux/random.h>
#include <linux/sched.h>
#include <net/mac80211.h>
#include "cw1200.h"
#include "txrx.h"
#include "hwbus.h"
#include "fwio.h"
#include "hwio.h"
#include "bh.h"
#include "sta.h"
#include "scan.h"
#include "debug.h"
#include "pm.h"
MODULE_AUTHOR("Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>");
MODULE_DESCRIPTION("Softmac ST-Ericsson CW1200 common code");
MODULE_LICENSE("GPL");
MODULE_ALIAS("cw1200_core");
/* Accept MAC address of the form macaddr=0x00,0x80,0xE1,0x30,0x40,0x50 */
static u8 cw1200_mac_template[ETH_ALEN] = {0x02, 0x80, 0xe1, 0x00, 0x00, 0x00};
module_param_array_named(macaddr, cw1200_mac_template, byte, NULL, 0444);
MODULE_PARM_DESC(macaddr, "Override platform_data MAC address");
static char *cw1200_sdd_path;
module_param(cw1200_sdd_path, charp, 0644);
MODULE_PARM_DESC(cw1200_sdd_path, "Override platform_data SDD file");
static int cw1200_refclk;
module_param(cw1200_refclk, int, 0644);
MODULE_PARM_DESC(cw1200_refclk, "Override platform_data reference clock");
int cw1200_power_mode = wsm_power_mode_quiescent;
module_param(cw1200_power_mode, int, 0644);
MODULE_PARM_DESC(cw1200_power_mode, "WSM power mode. 0 == active, 1 == doze, 2 == quiescent (default)");
#define RATETAB_ENT(_rate, _rateid, _flags) \
{ \
.bitrate = (_rate), \
.hw_value = (_rateid), \
.flags = (_flags), \
}
static struct ieee80211_rate cw1200_rates[] = {
RATETAB_ENT(10, 0, 0),
RATETAB_ENT(20, 1, 0),
RATETAB_ENT(55, 2, 0),
RATETAB_ENT(110, 3, 0),
RATETAB_ENT(60, 6, 0),
RATETAB_ENT(90, 7, 0),
RATETAB_ENT(120, 8, 0),
RATETAB_ENT(180, 9, 0),
RATETAB_ENT(240, 10, 0),
RATETAB_ENT(360, 11, 0),
RATETAB_ENT(480, 12, 0),
RATETAB_ENT(540, 13, 0),
};
static struct ieee80211_rate cw1200_mcs_rates[] = {
RATETAB_ENT(65, 14, IEEE80211_TX_RC_MCS),
RATETAB_ENT(130, 15, IEEE80211_TX_RC_MCS),
RATETAB_ENT(195, 16, IEEE80211_TX_RC_MCS),
RATETAB_ENT(260, 17, IEEE80211_TX_RC_MCS),
RATETAB_ENT(390, 18, IEEE80211_TX_RC_MCS),
RATETAB_ENT(520, 19, IEEE80211_TX_RC_MCS),
RATETAB_ENT(585, 20, IEEE80211_TX_RC_MCS),
RATETAB_ENT(650, 21, IEEE80211_TX_RC_MCS),
};
#define cw1200_a_rates (cw1200_rates + 4)
#define cw1200_a_rates_size (ARRAY_SIZE(cw1200_rates) - 4)
#define cw1200_g_rates (cw1200_rates + 0)
#define cw1200_g_rates_size (ARRAY_SIZE(cw1200_rates))
#define cw1200_n_rates (cw1200_mcs_rates)
#define cw1200_n_rates_size (ARRAY_SIZE(cw1200_mcs_rates))
#define CHAN2G(_channel, _freq, _flags) { \
.band = NL80211_BAND_2GHZ, \
.center_freq = (_freq), \
.hw_value = (_channel), \
.flags = (_flags), \
.max_antenna_gain = 0, \
.max_power = 30, \
}
#define CHAN5G(_channel, _flags) { \
.band = NL80211_BAND_5GHZ, \
.center_freq = 5000 + (5 * (_channel)), \
.hw_value = (_channel), \
.flags = (_flags), \
.max_antenna_gain = 0, \
.max_power = 30, \
}
static struct ieee80211_channel cw1200_2ghz_chantable[] = {
CHAN2G(1, 2412, 0),
CHAN2G(2, 2417, 0),
CHAN2G(3, 2422, 0),
CHAN2G(4, 2427, 0),
CHAN2G(5, 2432, 0),
CHAN2G(6, 2437, 0),
CHAN2G(7, 2442, 0),
CHAN2G(8, 2447, 0),
CHAN2G(9, 2452, 0),
CHAN2G(10, 2457, 0),
CHAN2G(11, 2462, 0),
CHAN2G(12, 2467, 0),
CHAN2G(13, 2472, 0),
CHAN2G(14, 2484, 0),
};
static struct ieee80211_channel cw1200_5ghz_chantable[] = {
CHAN5G(34, 0), CHAN5G(36, 0),
CHAN5G(38, 0), CHAN5G(40, 0),
CHAN5G(42, 0), CHAN5G(44, 0),
CHAN5G(46, 0), CHAN5G(48, 0),
CHAN5G(52, 0), CHAN5G(56, 0),
CHAN5G(60, 0), CHAN5G(64, 0),
CHAN5G(100, 0), CHAN5G(104, 0),
CHAN5G(108, 0), CHAN5G(112, 0),
CHAN5G(116, 0), CHAN5G(120, 0),
CHAN5G(124, 0), CHAN5G(128, 0),
CHAN5G(132, 0), CHAN5G(136, 0),
CHAN5G(140, 0), CHAN5G(149, 0),
CHAN5G(153, 0), CHAN5G(157, 0),
CHAN5G(161, 0), CHAN5G(165, 0),
CHAN5G(184, 0), CHAN5G(188, 0),
CHAN5G(192, 0), CHAN5G(196, 0),
CHAN5G(200, 0), CHAN5G(204, 0),
CHAN5G(208, 0), CHAN5G(212, 0),
CHAN5G(216, 0),
};
static struct ieee80211_supported_band cw1200_band_2ghz = {
.channels = cw1200_2ghz_chantable,
.n_channels = ARRAY_SIZE(cw1200_2ghz_chantable),
.bitrates = cw1200_g_rates,
.n_bitrates = cw1200_g_rates_size,
.ht_cap = {
.cap = IEEE80211_HT_CAP_GRN_FLD |
(1 << IEEE80211_HT_CAP_RX_STBC_SHIFT) |
IEEE80211_HT_CAP_MAX_AMSDU,
.ht_supported = 1,
.ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K,
.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE,
.mcs = {
.rx_mask[0] = 0xFF,
.rx_highest = __cpu_to_le16(0x41),
.tx_params = IEEE80211_HT_MCS_TX_DEFINED,
},
},
};
static struct ieee80211_supported_band cw1200_band_5ghz = {
.channels = cw1200_5ghz_chantable,
.n_channels = ARRAY_SIZE(cw1200_5ghz_chantable),
.bitrates = cw1200_a_rates,
.n_bitrates = cw1200_a_rates_size,
.ht_cap = {
.cap = IEEE80211_HT_CAP_GRN_FLD |
(1 << IEEE80211_HT_CAP_RX_STBC_SHIFT) |
IEEE80211_HT_CAP_MAX_AMSDU,
.ht_supported = 1,
.ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K,
.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE,
.mcs = {
.rx_mask[0] = 0xFF,
.rx_highest = __cpu_to_le16(0x41),
.tx_params = IEEE80211_HT_MCS_TX_DEFINED,
},
},
};
static const unsigned long cw1200_ttl[] = {
1 * HZ, /* VO */
2 * HZ, /* VI */
5 * HZ, /* BE */
10 * HZ /* BK */
};
static const struct ieee80211_ops cw1200_ops = {
.add_chanctx = ieee80211_emulate_add_chanctx,
.remove_chanctx = ieee80211_emulate_remove_chanctx,
.change_chanctx = ieee80211_emulate_change_chanctx,
.switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,
.start = cw1200_start,
.stop = cw1200_stop,
.add_interface = cw1200_add_interface,
.remove_interface = cw1200_remove_interface,
.change_interface = cw1200_change_interface,
.tx = cw1200_tx,
.wake_tx_queue = ieee80211_handle_wake_tx_queue,
.hw_scan = cw1200_hw_scan,
.set_tim = cw1200_set_tim,
.sta_notify = cw1200_sta_notify,
.sta_add = cw1200_sta_add,
.sta_remove = cw1200_sta_remove,
.set_key = cw1200_set_key,
.set_rts_threshold = cw1200_set_rts_threshold,
.config = cw1200_config,
.bss_info_changed = cw1200_bss_info_changed,
.prepare_multicast = cw1200_prepare_multicast,
.configure_filter = cw1200_configure_filter,
.conf_tx = cw1200_conf_tx,
.get_stats = cw1200_get_stats,
.ampdu_action = cw1200_ampdu_action,
.flush = cw1200_flush,
#ifdef CONFIG_PM
.suspend = cw1200_wow_suspend,
.resume = cw1200_wow_resume,
#endif
/* Intentionally not offloaded: */
/*.channel_switch = cw1200_channel_switch, */
/*.remain_on_channel = cw1200_remain_on_channel, */
/*.cancel_remain_on_channel = cw1200_cancel_remain_on_channel, */
};
static int cw1200_ba_rx_tids = -1;
static int cw1200_ba_tx_tids = -1;
module_param(cw1200_ba_rx_tids, int, 0644);
module_param(cw1200_ba_tx_tids, int, 0644);
MODULE_PARM_DESC(cw1200_ba_rx_tids, "Block ACK RX TIDs");
MODULE_PARM_DESC(cw1200_ba_tx_tids, "Block ACK TX TIDs");
#ifdef CONFIG_PM
static const struct wiphy_wowlan_support cw1200_wowlan_support = {
/* Support only for limited wowlan functionalities */
.flags = WIPHY_WOWLAN_ANY | WIPHY_WOWLAN_DISCONNECT,
};
#endif
static struct ieee80211_hw *cw1200_init_common(const u8 *macaddr,
const bool have_5ghz)
{
int i, band;
struct ieee80211_hw *hw;
struct cw1200_common *priv;
hw = ieee80211_alloc_hw(sizeof(struct cw1200_common), &cw1200_ops);
if (!hw)
return NULL;
priv = hw->priv;
priv->hw = hw;
priv->hw_type = -1;
priv->mode = NL80211_IFTYPE_UNSPECIFIED;
priv->rates = cw1200_rates; /* TODO: fetch from FW */
priv->mcs_rates = cw1200_n_rates;
if (cw1200_ba_rx_tids != -1)
priv->ba_rx_tid_mask = cw1200_ba_rx_tids;
else
priv->ba_rx_tid_mask = 0xFF; /* Enable RX BLKACK for all TIDs */
if (cw1200_ba_tx_tids != -1)
priv->ba_tx_tid_mask = cw1200_ba_tx_tids;
else
priv->ba_tx_tid_mask = 0xff; /* Enable TX BLKACK for all TIDs */
ieee80211_hw_set(hw, NEED_DTIM_BEFORE_ASSOC);
ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
ieee80211_hw_set(hw, AMPDU_AGGREGATION);
ieee80211_hw_set(hw, CONNECTION_MONITOR);
ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
ieee80211_hw_set(hw, SIGNAL_DBM);
ieee80211_hw_set(hw, SUPPORTS_PS);
hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_ADHOC) |
BIT(NL80211_IFTYPE_AP) |
BIT(NL80211_IFTYPE_MESH_POINT) |
BIT(NL80211_IFTYPE_P2P_CLIENT) |
BIT(NL80211_IFTYPE_P2P_GO);
#ifdef CONFIG_PM
hw->wiphy->wowlan = &cw1200_wowlan_support;
#endif
hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
hw->queues = 4;
priv->rts_threshold = -1;
hw->max_rates = 8;
hw->max_rate_tries = 15;
hw->extra_tx_headroom = WSM_TX_EXTRA_HEADROOM +
8; /* TKIP IV */
hw->sta_data_size = sizeof(struct cw1200_sta_priv);
hw->wiphy->bands[NL80211_BAND_2GHZ] = &cw1200_band_2ghz;
if (have_5ghz)
hw->wiphy->bands[NL80211_BAND_5GHZ] = &cw1200_band_5ghz;
/* Channel params have to be cleared before registering wiphy again */
for (band = 0; band < NUM_NL80211_BANDS; band++) {
struct ieee80211_supported_band *sband = hw->wiphy->bands[band];
if (!sband)
continue;
for (i = 0; i < sband->n_channels; i++) {
sband->channels[i].flags = 0;
sband->channels[i].max_antenna_gain = 0;
sband->channels[i].max_power = 30;
}
}
hw->wiphy->max_scan_ssids = 2;
hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
if (macaddr)
SET_IEEE80211_PERM_ADDR(hw, (u8 *)macaddr);
else
SET_IEEE80211_PERM_ADDR(hw, cw1200_mac_template);
/* Fix up mac address if necessary */
if (hw->wiphy->perm_addr[3] == 0 &&
hw->wiphy->perm_addr[4] == 0 &&
hw->wiphy->perm_addr[5] == 0) {
get_random_bytes(&hw->wiphy->perm_addr[3], 3);
}
mutex_init(&priv->wsm_cmd_mux);
mutex_init(&priv->conf_mutex);
priv->workqueue = create_singlethread_workqueue("cw1200_wq");
if (!priv->workqueue) {
ieee80211_free_hw(hw);
return NULL;
}
sema_init(&priv->scan.lock, 1);
INIT_WORK(&priv->scan.work, cw1200_scan_work);
INIT_DELAYED_WORK(&priv->scan.probe_work, cw1200_probe_work);
INIT_DELAYED_WORK(&priv->scan.timeout, cw1200_scan_timeout);
INIT_DELAYED_WORK(&priv->clear_recent_scan_work,
cw1200_clear_recent_scan_work);
INIT_DELAYED_WORK(&priv->join_timeout, cw1200_join_timeout);
INIT_WORK(&priv->unjoin_work, cw1200_unjoin_work);
INIT_WORK(&priv->join_complete_work, cw1200_join_complete_work);
INIT_WORK(&priv->wep_key_work, cw1200_wep_key_work);
INIT_WORK(&priv->tx_policy_upload_work, tx_policy_upload_work);
spin_lock_init(&priv->event_queue_lock);
INIT_LIST_HEAD(&priv->event_queue);
INIT_WORK(&priv->event_handler, cw1200_event_handler);
INIT_DELAYED_WORK(&priv->bss_loss_work, cw1200_bss_loss_work);
INIT_WORK(&priv->bss_params_work, cw1200_bss_params_work);
spin_lock_init(&priv->bss_loss_lock);
spin_lock_init(&priv->ps_state_lock);
INIT_WORK(&priv->set_cts_work, cw1200_set_cts_work);
INIT_WORK(&priv->set_tim_work, cw1200_set_tim_work);
INIT_WORK(&priv->multicast_start_work, cw1200_multicast_start_work);
INIT_WORK(&priv->multicast_stop_work, cw1200_multicast_stop_work);
INIT_WORK(&priv->link_id_work, cw1200_link_id_work);
INIT_DELAYED_WORK(&priv->link_id_gc_work, cw1200_link_id_gc_work);
INIT_WORK(&priv->linkid_reset_work, cw1200_link_id_reset);
INIT_WORK(&priv->update_filtering_work, cw1200_update_filtering_work);
INIT_WORK(&priv->set_beacon_wakeup_period_work,
cw1200_set_beacon_wakeup_period_work);
timer_setup(&priv->mcast_timeout, cw1200_mcast_timeout, 0);
if (cw1200_queue_stats_init(&priv->tx_queue_stats,
CW1200_LINK_ID_MAX,
cw1200_skb_dtor,
priv)) {
destroy_workqueue(priv->workqueue);
ieee80211_free_hw(hw);
return NULL;
}
for (i = 0; i < 4; ++i) {
if (cw1200_queue_init(&priv->tx_queue[i],
&priv->tx_queue_stats, i, 16,
cw1200_ttl[i])) {
for (; i > 0; i--)
cw1200_queue_deinit(&priv->tx_queue[i - 1]);
cw1200_queue_stats_deinit(&priv->tx_queue_stats);
destroy_workqueue(priv->workqueue);
ieee80211_free_hw(hw);
return NULL;
}
}
init_waitqueue_head(&priv->channel_switch_done);
init_waitqueue_head(&priv->wsm_cmd_wq);
init_waitqueue_head(&priv->wsm_startup_done);
init_waitqueue_head(&priv->ps_mode_switch_done);
wsm_buf_init(&priv->wsm_cmd_buf);
spin_lock_init(&priv->wsm_cmd.lock);
priv->wsm_cmd.done = 1;
tx_policy_init(priv);
return hw;
}
static int cw1200_register_common(struct ieee80211_hw *dev)
{
struct cw1200_common *priv = dev->priv;
int err;
#ifdef CONFIG_PM
err = cw1200_pm_init(&priv->pm_state, priv);
if (err) {
pr_err("Cannot init PM. (%d).\n",
err);
return err;
}
#endif
err = ieee80211_register_hw(dev);
if (err) {
pr_err("Cannot register device (%d).\n",
err);
#ifdef CONFIG_PM
cw1200_pm_deinit(&priv->pm_state);
#endif
return err;
}
cw1200_debug_init(priv);
pr_info("Registered as '%s'\n", wiphy_name(dev->wiphy));
return 0;
}
static void cw1200_free_common(struct ieee80211_hw *dev)
{
ieee80211_free_hw(dev);
}
static void cw1200_unregister_common(struct ieee80211_hw *dev)
{
struct cw1200_common *priv = dev->priv;
int i;
ieee80211_unregister_hw(dev);
del_timer_sync(&priv->mcast_timeout);
cw1200_unregister_bh(priv);
cw1200_debug_release(priv);
mutex_destroy(&priv->conf_mutex);
wsm_buf_deinit(&priv->wsm_cmd_buf);
destroy_workqueue(priv->workqueue);
priv->workqueue = NULL;
if (priv->sdd) {
release_firmware(priv->sdd);
priv->sdd = NULL;
}
for (i = 0; i < 4; ++i)
cw1200_queue_deinit(&priv->tx_queue[i]);
cw1200_queue_stats_deinit(&priv->tx_queue_stats);
#ifdef CONFIG_PM
cw1200_pm_deinit(&priv->pm_state);
#endif
}
/* Clock is in KHz */
u32 cw1200_dpll_from_clk(u16 clk_khz)
{
switch (clk_khz) {
case 0x32C8: /* 13000 KHz */
return 0x1D89D241;
case 0x3E80: /* 16000 KHz */
return 0x000001E1;
case 0x41A0: /* 16800 KHz */
return 0x124931C1;
case 0x4B00: /* 19200 KHz */
return 0x00000191;
case 0x5DC0: /* 24000 KHz */
return 0x00000141;
case 0x6590: /* 26000 KHz */
return 0x0EC4F121;
case 0x8340: /* 33600 KHz */
return 0x092490E1;
case 0x9600: /* 38400 KHz */
return 0x100010C1;
case 0x9C40: /* 40000 KHz */
return 0x000000C1;
case 0xBB80: /* 48000 KHz */
return 0x000000A1;
case 0xCB20: /* 52000 KHz */
return 0x07627091;
default:
pr_err("Unknown Refclk freq (0x%04x), using 26000KHz\n",
clk_khz);
return 0x0EC4F121;
}
}
int cw1200_core_probe(const struct hwbus_ops *hwbus_ops,
struct hwbus_priv *hwbus,
struct device *pdev,
struct cw1200_common **core,
int ref_clk, const u8 *macaddr,
const char *sdd_path, bool have_5ghz)
{
int err = -EINVAL;
struct ieee80211_hw *dev;
struct cw1200_common *priv;
struct wsm_operational_mode mode = {
.power_mode = cw1200_power_mode,
.disable_more_flag_usage = true,
};
dev = cw1200_init_common(macaddr, have_5ghz);
if (!dev)
goto err;
priv = dev->priv;
priv->hw_refclk = ref_clk;
if (cw1200_refclk)
priv->hw_refclk = cw1200_refclk;
priv->sdd_path = (char *)sdd_path;
if (cw1200_sdd_path)
priv->sdd_path = cw1200_sdd_path;
priv->hwbus_ops = hwbus_ops;
priv->hwbus_priv = hwbus;
priv->pdev = pdev;
SET_IEEE80211_DEV(priv->hw, pdev);
/* Pass struct cw1200_common back up */
*core = priv;
err = cw1200_register_bh(priv);
if (err)
goto err1;
err = cw1200_load_firmware(priv);
if (err)
goto err2;
if (wait_event_interruptible_timeout(priv->wsm_startup_done,
priv->firmware_ready,
3*HZ) <= 0) {
/* TODO: Need to find how to reset device
in QUEUE mode properly.
*/
pr_err("Timeout waiting on device startup\n");
err = -ETIMEDOUT;
goto err2;
}
/* Set low-power mode. */
wsm_set_operational_mode(priv, &mode);
/* Enable multi-TX confirmation */
wsm_use_multi_tx_conf(priv, true);
err = cw1200_register_common(dev);
if (err)
goto err2;
return err;
err2:
cw1200_unregister_bh(priv);
err1:
cw1200_free_common(dev);
err:
*core = NULL;
return err;
}
EXPORT_SYMBOL_GPL(cw1200_core_probe);
void cw1200_core_release(struct cw1200_common *self)
{
/* Disable device interrupts */
self->hwbus_ops->lock(self->hwbus_priv);
__cw1200_irq_enable(self, 0);
self->hwbus_ops->unlock(self->hwbus_priv);
/* And then clean up */
cw1200_unregister_common(self->hw);
cw1200_free_common(self->hw);
return;
}
EXPORT_SYMBOL_GPL(cw1200_core_release);