main.c 94.5 KB
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/*
 * This file is part of wl1271
 *
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 * Copyright (C) 2008-2010 Nokia Corporation
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 *
 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/delay.h>
#include <linux/spi/spi.h>
#include <linux/crc32.h>
#include <linux/etherdevice.h>
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#include <linux/vmalloc.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/wl12xx.h>
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#include "wl12xx.h"
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#include "wl12xx_80211.h"
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#include "reg.h"
#include "io.h"
#include "event.h"
#include "tx.h"
#include "rx.h"
#include "ps.h"
#include "init.h"
#include "debugfs.h"
#include "cmd.h"
#include "boot.h"
#include "testmode.h"
#include "scan.h"
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#define WL1271_BOOT_RETRIES 3

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static struct conf_drv_settings default_conf = {
	.sg = {
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		.params = {
			[CONF_SG_BT_PER_THRESHOLD]                  = 7500,
			[CONF_SG_HV3_MAX_OVERRIDE]                  = 0,
			[CONF_SG_BT_NFS_SAMPLE_INTERVAL]            = 400,
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			[CONF_SG_BT_LOAD_RATIO]                     = 200,
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			[CONF_SG_AUTO_PS_MODE]                      = 1,
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			[CONF_SG_AUTO_SCAN_PROBE_REQ]               = 170,
			[CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_HV3]   = 50,
			[CONF_SG_ANTENNA_CONFIGURATION]             = 0,
			[CONF_SG_BEACON_MISS_PERCENT]               = 60,
			[CONF_SG_RATE_ADAPT_THRESH]                 = 12,
			[CONF_SG_RATE_ADAPT_SNR]                    = 0,
			[CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_BR]      = 10,
			[CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_BR]      = 30,
			[CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_BR]      = 8,
			[CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_BR]       = 20,
			[CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_BR]       = 50,
			/* Note: with UPSD, this should be 4 */
			[CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_BR]       = 8,
			[CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_EDR]     = 7,
			[CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_EDR]     = 25,
			[CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_EDR]     = 20,
			/* Note: with UPDS, this should be 15 */
			[CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_EDR]      = 8,
			/* Note: with UPDS, this should be 50 */
			[CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_EDR]      = 40,
			/* Note: with UPDS, this should be 10 */
			[CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_EDR]      = 20,
			[CONF_SG_RXT]                               = 1200,
			[CONF_SG_TXT]                               = 1000,
			[CONF_SG_ADAPTIVE_RXT_TXT]                  = 1,
			[CONF_SG_PS_POLL_TIMEOUT]                   = 10,
			[CONF_SG_UPSD_TIMEOUT]                      = 10,
			[CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MIN_EDR] = 7,
			[CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MAX_EDR] = 15,
			[CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_MASTER_EDR] = 15,
			[CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MIN_EDR]  = 8,
			[CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MAX_EDR]  = 20,
			[CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_SLAVE_EDR]  = 15,
			[CONF_SG_WLAN_ACTIVE_BT_ACL_MIN_BR]         = 20,
			[CONF_SG_WLAN_ACTIVE_BT_ACL_MAX_BR]         = 50,
			[CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_BR]         = 10,
			[CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_HV3]  = 200,
			[CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_A2DP] = 800,
			[CONF_SG_PASSIVE_SCAN_A2DP_BT_TIME]         = 75,
			[CONF_SG_PASSIVE_SCAN_A2DP_WLAN_TIME]       = 15,
			[CONF_SG_HV3_MAX_SERVED]                    = 6,
			[CONF_SG_DHCP_TIME]                         = 5000,
			[CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_A2DP]  = 100,
		},
		.state = CONF_SG_PROTECTIVE,
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	},
	.rx = {
		.rx_msdu_life_time           = 512000,
		.packet_detection_threshold  = 0,
		.ps_poll_timeout             = 15,
		.upsd_timeout                = 15,
		.rts_threshold               = 2347,
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		.rx_cca_threshold            = 0,
		.irq_blk_threshold           = 0xFFFF,
		.irq_pkt_threshold           = 0,
		.irq_timeout                 = 600,
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		.queue_type                  = CONF_RX_QUEUE_TYPE_LOW_PRIORITY,
	},
	.tx = {
		.tx_energy_detection         = 0,
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		.sta_rc_conf                 = {
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			.enabled_rates       = 0,
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			.short_retry_limit   = 10,
			.long_retry_limit    = 10,
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			.aflags              = 0,
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		},
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		.ac_conf_count               = 4,
		.ac_conf                     = {
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			[CONF_TX_AC_BE] = {
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				.ac          = CONF_TX_AC_BE,
				.cw_min      = 15,
				.cw_max      = 63,
				.aifsn       = 3,
				.tx_op_limit = 0,
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			},
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			[CONF_TX_AC_BK] = {
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				.ac          = CONF_TX_AC_BK,
				.cw_min      = 15,
				.cw_max      = 63,
				.aifsn       = 7,
				.tx_op_limit = 0,
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			},
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			[CONF_TX_AC_VI] = {
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				.ac          = CONF_TX_AC_VI,
				.cw_min      = 15,
				.cw_max      = 63,
				.aifsn       = CONF_TX_AIFS_PIFS,
				.tx_op_limit = 3008,
			},
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			[CONF_TX_AC_VO] = {
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				.ac          = CONF_TX_AC_VO,
				.cw_min      = 15,
				.cw_max      = 63,
				.aifsn       = CONF_TX_AIFS_PIFS,
				.tx_op_limit = 1504,
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			},
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		},
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		.ap_rc_conf                  = {
			[0] = {
				.enabled_rates = CONF_TX_AP_ENABLED_RATES,
				.short_retry_limit = 10,
				.long_retry_limit = 10,
				.aflags      = 0,
			},
			[1] = {
				.enabled_rates = CONF_TX_AP_ENABLED_RATES,
				.short_retry_limit = 10,
				.long_retry_limit = 10,
				.aflags      = 0,
			},
			[2] = {
				.enabled_rates = CONF_TX_AP_ENABLED_RATES,
				.short_retry_limit = 10,
				.long_retry_limit = 10,
				.aflags      = 0,
			},
			[3] = {
				.enabled_rates = CONF_TX_AP_ENABLED_RATES,
				.short_retry_limit = 10,
				.long_retry_limit = 10,
				.aflags      = 0,
			},
		},
		.ap_mgmt_conf = {
			.enabled_rates       = CONF_TX_AP_DEFAULT_MGMT_RATES,
			.short_retry_limit   = 10,
			.long_retry_limit    = 10,
			.aflags              = 0,
		},
		.ap_bcst_conf = {
			.enabled_rates       = CONF_HW_BIT_RATE_1MBPS,
			.short_retry_limit   = 10,
			.long_retry_limit    = 10,
			.aflags              = 0,
		},
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		.ap_max_tx_retries = 100,
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		.tid_conf_count = 4,
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		.tid_conf = {
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			[CONF_TX_AC_BE] = {
				.queue_id    = CONF_TX_AC_BE,
				.channel_type = CONF_CHANNEL_TYPE_EDCF,
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				.tsid        = CONF_TX_AC_BE,
				.ps_scheme   = CONF_PS_SCHEME_LEGACY,
				.ack_policy  = CONF_ACK_POLICY_LEGACY,
				.apsd_conf   = {0, 0},
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			},
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			[CONF_TX_AC_BK] = {
				.queue_id    = CONF_TX_AC_BK,
				.channel_type = CONF_CHANNEL_TYPE_EDCF,
				.tsid        = CONF_TX_AC_BK,
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				.ps_scheme   = CONF_PS_SCHEME_LEGACY,
				.ack_policy  = CONF_ACK_POLICY_LEGACY,
				.apsd_conf   = {0, 0},
			},
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			[CONF_TX_AC_VI] = {
				.queue_id    = CONF_TX_AC_VI,
				.channel_type = CONF_CHANNEL_TYPE_EDCF,
				.tsid        = CONF_TX_AC_VI,
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				.ps_scheme   = CONF_PS_SCHEME_LEGACY,
				.ack_policy  = CONF_ACK_POLICY_LEGACY,
				.apsd_conf   = {0, 0},
			},
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			[CONF_TX_AC_VO] = {
				.queue_id    = CONF_TX_AC_VO,
				.channel_type = CONF_CHANNEL_TYPE_EDCF,
				.tsid        = CONF_TX_AC_VO,
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				.ps_scheme   = CONF_PS_SCHEME_LEGACY,
				.ack_policy  = CONF_ACK_POLICY_LEGACY,
				.apsd_conf   = {0, 0},
			},
		},
		.frag_threshold              = IEEE80211_MAX_FRAG_THRESHOLD,
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		.tx_compl_timeout            = 700,
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		.tx_compl_threshold          = 4,
		.basic_rate                  = CONF_HW_BIT_RATE_1MBPS,
		.basic_rate_5                = CONF_HW_BIT_RATE_6MBPS,
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		.tmpl_short_retry_limit      = 10,
		.tmpl_long_retry_limit       = 10,
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	},
	.conn = {
		.wake_up_event               = CONF_WAKE_UP_EVENT_DTIM,
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		.listen_interval             = 1,
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		.bcn_filt_mode               = CONF_BCN_FILT_MODE_ENABLED,
		.bcn_filt_ie_count           = 1,
		.bcn_filt_ie = {
			[0] = {
				.ie          = WLAN_EID_CHANNEL_SWITCH,
				.rule        = CONF_BCN_RULE_PASS_ON_APPEARANCE,
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			}
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		},
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		.synch_fail_thold            = 10,
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		.bss_lose_timeout            = 100,
		.beacon_rx_timeout           = 10000,
		.broadcast_timeout           = 20000,
		.rx_broadcast_in_ps          = 1,
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		.ps_poll_threshold           = 10,
		.ps_poll_recovery_period     = 700,
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		.bet_enable                  = CONF_BET_MODE_ENABLE,
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		.bet_max_consecutive         = 50,
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		.psm_entry_retries           = 5,
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		.psm_exit_retries            = 255,
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		.psm_entry_nullfunc_retries  = 3,
		.psm_entry_hangover_period   = 1,
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		.keep_alive_interval         = 55000,
		.max_listen_interval         = 20,
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	},
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	.itrim = {
		.enable = false,
		.timeout = 50000,
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	},
	.pm_config = {
		.host_clk_settling_time = 5000,
		.host_fast_wakeup_support = false
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	},
	.roam_trigger = {
		.trigger_pacing               = 1,
		.avg_weight_rssi_beacon       = 20,
		.avg_weight_rssi_data         = 10,
		.avg_weight_snr_beacon        = 20,
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		.avg_weight_snr_data          = 10,
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	},
	.scan = {
		.min_dwell_time_active        = 7500,
		.max_dwell_time_active        = 30000,
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		.min_dwell_time_passive       = 100000,
		.max_dwell_time_passive       = 100000,
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		.num_probe_reqs               = 2,
	},
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	.rf = {
		.tx_per_channel_power_compensation_2 = {
			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		},
		.tx_per_channel_power_compensation_5 = {
			0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
			0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
			0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		},
	},
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	.ht = {
		.tx_ba_win_size = 64,
		.inactivity_timeout = 10000,
	},
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	.mem_wl127x = {
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		.num_stations                 = 1,
		.ssid_profiles                = 1,
		.rx_block_num                 = 70,
		.tx_min_block_num             = 40,
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		.dynamic_memory               = 0,
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		.min_req_tx_blocks            = 100,
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		.min_req_rx_blocks            = 22,
		.tx_min                       = 27,
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	},
	.mem_wl128x = {
		.num_stations                 = 1,
		.ssid_profiles                = 1,
		.rx_block_num                 = 40,
		.tx_min_block_num             = 40,
		.dynamic_memory               = 1,
		.min_req_tx_blocks            = 45,
		.min_req_rx_blocks            = 22,
		.tx_min                       = 27,
	},
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};

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static void __wl1271_op_remove_interface(struct wl1271 *wl);
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static void wl1271_free_ap_keys(struct wl1271 *wl);
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static void wl1271_device_release(struct device *dev)
{

}

static struct platform_device wl1271_device = {
	.name           = "wl1271",
	.id             = -1,

	/* device model insists to have a release function */
	.dev            = {
		.release = wl1271_device_release,
	},
};

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static DEFINE_MUTEX(wl_list_mutex);
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static LIST_HEAD(wl_list);

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static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
			     void *arg)
{
	struct net_device *dev = arg;
	struct wireless_dev *wdev;
	struct wiphy *wiphy;
	struct ieee80211_hw *hw;
	struct wl1271 *wl;
	struct wl1271 *wl_temp;
	int ret = 0;

	/* Check that this notification is for us. */
	if (what != NETDEV_CHANGE)
		return NOTIFY_DONE;

	wdev = dev->ieee80211_ptr;
	if (wdev == NULL)
		return NOTIFY_DONE;

	wiphy = wdev->wiphy;
	if (wiphy == NULL)
		return NOTIFY_DONE;

	hw = wiphy_priv(wiphy);
	if (hw == NULL)
		return NOTIFY_DONE;

	wl_temp = hw->priv;
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	mutex_lock(&wl_list_mutex);
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	list_for_each_entry(wl, &wl_list, list) {
		if (wl == wl_temp)
			break;
	}
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	mutex_unlock(&wl_list_mutex);
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	if (wl != wl_temp)
		return NOTIFY_DONE;

	mutex_lock(&wl->mutex);

	if (wl->state == WL1271_STATE_OFF)
		goto out;

	if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
		goto out;

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	ret = wl1271_ps_elp_wakeup(wl);
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	if (ret < 0)
		goto out;

	if ((dev->operstate == IF_OPER_UP) &&
	    !test_and_set_bit(WL1271_FLAG_STA_STATE_SENT, &wl->flags)) {
		wl1271_cmd_set_sta_state(wl);
		wl1271_info("Association completed.");
	}

	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);

	return NOTIFY_OK;
}

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static int wl1271_reg_notify(struct wiphy *wiphy,
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			     struct regulatory_request *request)
{
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	struct ieee80211_supported_band *band;
	struct ieee80211_channel *ch;
	int i;

	band = wiphy->bands[IEEE80211_BAND_5GHZ];
	for (i = 0; i < band->n_channels; i++) {
		ch = &band->channels[i];
		if (ch->flags & IEEE80211_CHAN_DISABLED)
			continue;

		if (ch->flags & IEEE80211_CHAN_RADAR)
			ch->flags |= IEEE80211_CHAN_NO_IBSS |
				     IEEE80211_CHAN_PASSIVE_SCAN;

	}

	return 0;
}

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static void wl1271_conf_init(struct wl1271 *wl)
{
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	/*
	 * This function applies the default configuration to the driver. This
	 * function is invoked upon driver load (spi probe.)
	 *
	 * The configuration is stored in a run-time structure in order to
	 * facilitate for run-time adjustment of any of the parameters. Making
	 * changes to the configuration structure will apply the new values on
	 * the next interface up (wl1271_op_start.)
	 */

	/* apply driver default configuration */
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	memcpy(&wl->conf, &default_conf, sizeof(default_conf));
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}


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static int wl1271_plt_init(struct wl1271 *wl)
{
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	struct conf_tx_ac_category *conf_ac;
	struct conf_tx_tid *conf_tid;
	int ret, i;
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	if (wl->chip.id == CHIP_ID_1283_PG20)
		ret = wl128x_cmd_general_parms(wl);
	else
		ret = wl1271_cmd_general_parms(wl);
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	if (ret < 0)
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		return ret;

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	if (wl->chip.id == CHIP_ID_1283_PG20)
		ret = wl128x_cmd_radio_parms(wl);
	else
		ret = wl1271_cmd_radio_parms(wl);
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	if (ret < 0)
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		return ret;

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	if (wl->chip.id != CHIP_ID_1283_PG20) {
		ret = wl1271_cmd_ext_radio_parms(wl);
		if (ret < 0)
			return ret;
	}
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	if (ret < 0)
		return ret;

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	/* Chip-specific initializations */
	ret = wl1271_chip_specific_init(wl);
	if (ret < 0)
		return ret;

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	ret = wl1271_sta_init_templates_config(wl);
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	if (ret < 0)
		return ret;

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	ret = wl1271_acx_init_mem_config(wl);
	if (ret < 0)
		return ret;

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	/* PHY layer config */
	ret = wl1271_init_phy_config(wl);
	if (ret < 0)
		goto out_free_memmap;

	ret = wl1271_acx_dco_itrim_params(wl);
	if (ret < 0)
		goto out_free_memmap;

	/* Initialize connection monitoring thresholds */
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	ret = wl1271_acx_conn_monit_params(wl, false);
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	if (ret < 0)
		goto out_free_memmap;

	/* Bluetooth WLAN coexistence */
	ret = wl1271_init_pta(wl);
	if (ret < 0)
		goto out_free_memmap;

	/* Energy detection */
	ret = wl1271_init_energy_detection(wl);
	if (ret < 0)
		goto out_free_memmap;

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	ret = wl1271_acx_sta_mem_cfg(wl);
	if (ret < 0)
		goto out_free_memmap;

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	/* Default fragmentation threshold */
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	ret = wl1271_acx_frag_threshold(wl, wl->conf.tx.frag_threshold);
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	if (ret < 0)
		goto out_free_memmap;

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	/* Default TID/AC configuration */
	BUG_ON(wl->conf.tx.tid_conf_count != wl->conf.tx.ac_conf_count);
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	for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
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		conf_ac = &wl->conf.tx.ac_conf[i];
		ret = wl1271_acx_ac_cfg(wl, conf_ac->ac, conf_ac->cw_min,
					conf_ac->cw_max, conf_ac->aifsn,
					conf_ac->tx_op_limit);
		if (ret < 0)
			goto out_free_memmap;

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		conf_tid = &wl->conf.tx.tid_conf[i];
		ret = wl1271_acx_tid_cfg(wl, conf_tid->queue_id,
					 conf_tid->channel_type,
					 conf_tid->tsid,
					 conf_tid->ps_scheme,
					 conf_tid->ack_policy,
					 conf_tid->apsd_conf[0],
					 conf_tid->apsd_conf[1]);
		if (ret < 0)
			goto out_free_memmap;
	}

	/* Enable data path */
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	ret = wl1271_cmd_data_path(wl, 1);
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547
	if (ret < 0)
548 549 550 551 552 553 554 555 556 557 558
		goto out_free_memmap;

	/* Configure for CAM power saving (ie. always active) */
	ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
	if (ret < 0)
		goto out_free_memmap;

	/* configure PM */
	ret = wl1271_acx_pm_config(wl);
	if (ret < 0)
		goto out_free_memmap;
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	return 0;
561 562 563 564 565 566

 out_free_memmap:
	kfree(wl->target_mem_map);
	wl->target_mem_map = NULL;

	return ret;
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}

569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619
static void wl1271_irq_ps_regulate_link(struct wl1271 *wl, u8 hlid, u8 tx_blks)
{
	bool fw_ps;

	/* only regulate station links */
	if (hlid < WL1271_AP_STA_HLID_START)
		return;

	fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);

	/*
	 * Wake up from high level PS if the STA is asleep with too little
	 * blocks in FW or if the STA is awake.
	 */
	if (!fw_ps || tx_blks < WL1271_PS_STA_MAX_BLOCKS)
		wl1271_ps_link_end(wl, hlid);

	/* Start high-level PS if the STA is asleep with enough blocks in FW */
	else if (fw_ps && tx_blks >= WL1271_PS_STA_MAX_BLOCKS)
		wl1271_ps_link_start(wl, hlid, true);
}

static void wl1271_irq_update_links_status(struct wl1271 *wl,
				       struct wl1271_fw_ap_status *status)
{
	u32 cur_fw_ps_map;
	u8 hlid;

	cur_fw_ps_map = le32_to_cpu(status->link_ps_bitmap);
	if (wl->ap_fw_ps_map != cur_fw_ps_map) {
		wl1271_debug(DEBUG_PSM,
			     "link ps prev 0x%x cur 0x%x changed 0x%x",
			     wl->ap_fw_ps_map, cur_fw_ps_map,
			     wl->ap_fw_ps_map ^ cur_fw_ps_map);

		wl->ap_fw_ps_map = cur_fw_ps_map;
	}

	for (hlid = WL1271_AP_STA_HLID_START; hlid < AP_MAX_LINKS; hlid++) {
		u8 cnt = status->tx_lnk_free_blks[hlid] -
			wl->links[hlid].prev_freed_blks;

		wl->links[hlid].prev_freed_blks =
			status->tx_lnk_free_blks[hlid];
		wl->links[hlid].allocated_blks -= cnt;

		wl1271_irq_ps_regulate_link(wl, hlid,
					    wl->links[hlid].allocated_blks);
	}
}

620
static void wl1271_fw_status(struct wl1271 *wl,
621
			     struct wl1271_fw_full_status *full_status)
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{
623
	struct wl1271_fw_common_status *status = &full_status->common;
624
	struct timespec ts;
625
	u32 old_tx_blk_count = wl->tx_blocks_available;
626
	u32 freed_blocks = 0;
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	int i;

629
	if (wl->bss_type == BSS_TYPE_AP_BSS) {
630 631
		wl1271_raw_read(wl, FW_STATUS_ADDR, status,
				sizeof(struct wl1271_fw_ap_status), false);
632
	} else {
633 634
		wl1271_raw_read(wl, FW_STATUS_ADDR, status,
				sizeof(struct wl1271_fw_sta_status), false);
635 636
	}

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637 638 639 640 641 642 643 644 645
	wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
		     "drv_rx_counter = %d, tx_results_counter = %d)",
		     status->intr,
		     status->fw_rx_counter,
		     status->drv_rx_counter,
		     status->tx_results_counter);

	/* update number of available TX blocks */
	for (i = 0; i < NUM_TX_QUEUES; i++) {
646 647
		freed_blocks += le32_to_cpu(status->tx_released_blks[i]) -
				wl->tx_blocks_freed[i];
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		wl->tx_blocks_freed[i] =
			le32_to_cpu(status->tx_released_blks[i]);
651 652
	}

653 654 655 656 657 658 659 660
	wl->tx_allocated_blocks -= freed_blocks;

	if (wl->bss_type == BSS_TYPE_AP_BSS) {
		/* Update num of allocated TX blocks per link and ps status */
		wl1271_irq_update_links_status(wl, &full_status->ap);
		wl->tx_blocks_available += freed_blocks;
	} else {
		int avail = full_status->sta.tx_total - wl->tx_allocated_blocks;
661

662 663 664 665 666 667 668 669 670 671
		/*
		 * The FW might change the total number of TX memblocks before
		 * we get a notification about blocks being released. Thus, the
		 * available blocks calculation might yield a temporary result
		 * which is lower than the actual available blocks. Keeping in
		 * mind that only blocks that were allocated can be moved from
		 * TX to RX, tx_blocks_available should never decrease here.
		 */
		wl->tx_blocks_available = max((int)wl->tx_blocks_available,
					      avail);
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	}

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	/* if more blocks are available now, tx work can be scheduled */
675
	if (wl->tx_blocks_available > old_tx_blk_count)
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		clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
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	/* update the host-chipset time offset */
679 680 681
	getnstimeofday(&ts);
	wl->time_offset = (timespec_to_ns(&ts) >> 10) -
		(s64)le32_to_cpu(status->fw_localtime);
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}

684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705
static void wl1271_flush_deferred_work(struct wl1271 *wl)
{
	struct sk_buff *skb;

	/* Pass all received frames to the network stack */
	while ((skb = skb_dequeue(&wl->deferred_rx_queue)))
		ieee80211_rx_ni(wl->hw, skb);

	/* Return sent skbs to the network stack */
	while ((skb = skb_dequeue(&wl->deferred_tx_queue)))
		ieee80211_tx_status(wl->hw, skb);
}

static void wl1271_netstack_work(struct work_struct *work)
{
	struct wl1271 *wl =
		container_of(work, struct wl1271, netstack_work);

	do {
		wl1271_flush_deferred_work(wl);
	} while (skb_queue_len(&wl->deferred_rx_queue));
}
706

707 708 709
#define WL1271_IRQ_MAX_LOOPS 256

irqreturn_t wl1271_irq(int irq, void *cookie)
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{
	int ret;
712
	u32 intr;
713
	int loopcount = WL1271_IRQ_MAX_LOOPS;
714 715 716
	struct wl1271 *wl = (struct wl1271 *)cookie;
	bool done = false;
	unsigned int defer_count;
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717 718 719 720 721
	unsigned long flags;

	/* TX might be handled here, avoid redundant work */
	set_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
	cancel_work_sync(&wl->tx_work);
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723 724 725 726 727 728 729
	/*
	 * In case edge triggered interrupt must be used, we cannot iterate
	 * more than once without introducing race conditions with the hardirq.
	 */
	if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
		loopcount = 1;

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	mutex_lock(&wl->mutex);

	wl1271_debug(DEBUG_IRQ, "IRQ work");

734
	if (unlikely(wl->state == WL1271_STATE_OFF))
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		goto out;

737
	ret = wl1271_ps_elp_wakeup(wl);
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738 739 740
	if (ret < 0)
		goto out;

741 742 743 744 745 746 747 748
	while (!done && loopcount--) {
		/*
		 * In order to avoid a race with the hardirq, clear the flag
		 * before acknowledging the chip. Since the mutex is held,
		 * wl1271_ps_elp_wakeup cannot be called concurrently.
		 */
		clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
		smp_mb__after_clear_bit();
749 750

		wl1271_fw_status(wl, wl->fw_status);
751
		intr = le32_to_cpu(wl->fw_status->common.intr);
752
		intr &= WL1271_INTR_MASK;
753
		if (!intr) {
754
			done = true;
755 756
			continue;
		}
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758 759 760 761 762 763 764 765 766
		if (unlikely(intr & WL1271_ACX_INTR_WATCHDOG)) {
			wl1271_error("watchdog interrupt received! "
				     "starting recovery.");
			ieee80211_queue_work(wl->hw, &wl->recovery_work);

			/* restarting the chip. ignore any other interrupt. */
			goto out;
		}

767
		if (likely(intr & WL1271_ACX_INTR_DATA)) {
768
			wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
769

770
			wl1271_rx(wl, &wl->fw_status->common);
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			/* Check if any tx blocks were freed */
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773
			spin_lock_irqsave(&wl->wl_lock, flags);
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774
			if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
775
			    wl->tx_queue_count) {
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776
				spin_unlock_irqrestore(&wl->wl_lock, flags);
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				/*
				 * In order to avoid starvation of the TX path,
				 * call the work function directly.
				 */
				wl1271_tx_work_locked(wl);
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			} else {
				spin_unlock_irqrestore(&wl->wl_lock, flags);
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784 785
			}

786 787 788 789
			/* check for tx results */
			if (wl->fw_status->common.tx_results_counter !=
			    (wl->tx_results_count & 0xff))
				wl1271_tx_complete(wl);
790 791 792 793 794 795

			/* Make sure the deferred queues don't get too long */
			defer_count = skb_queue_len(&wl->deferred_tx_queue) +
				      skb_queue_len(&wl->deferred_rx_queue);
			if (defer_count > WL1271_DEFERRED_QUEUE_LIMIT)
				wl1271_flush_deferred_work(wl);
796
		}
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798 799 800 801
		if (intr & WL1271_ACX_INTR_EVENT_A) {
			wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_A");
			wl1271_event_handle(wl, 0);
		}
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802

803 804 805 806
		if (intr & WL1271_ACX_INTR_EVENT_B) {
			wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B");
			wl1271_event_handle(wl, 1);
		}
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807

808 809 810
		if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
			wl1271_debug(DEBUG_IRQ,
				     "WL1271_ACX_INTR_INIT_COMPLETE");
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811

812 813
		if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
			wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
814
	}
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815 816 817 818

	wl1271_ps_elp_sleep(wl);

out:
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Ido Yariv 已提交
819 820 821 822 823 824 825 826
	spin_lock_irqsave(&wl->wl_lock, flags);
	/* In case TX was not handled here, queue TX work */
	clear_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
	if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
	    wl->tx_queue_count)
		ieee80211_queue_work(wl->hw, &wl->tx_work);
	spin_unlock_irqrestore(&wl->wl_lock, flags);

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827
	mutex_unlock(&wl->mutex);
828 829

	return IRQ_HANDLED;
L
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830
}
831
EXPORT_SYMBOL_GPL(wl1271_irq);
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832 833 834 835

static int wl1271_fetch_firmware(struct wl1271 *wl)
{
	const struct firmware *fw;
836
	const char *fw_name;
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837 838
	int ret;

839 840
	switch (wl->bss_type) {
	case BSS_TYPE_AP_BSS:
841 842 843 844
		if (wl->chip.id == CHIP_ID_1283_PG20)
			fw_name = WL128X_AP_FW_NAME;
		else
			fw_name = WL127X_AP_FW_NAME;
845 846 847
		break;
	case BSS_TYPE_IBSS:
	case BSS_TYPE_STA_BSS:
848 849 850 851
		if (wl->chip.id == CHIP_ID_1283_PG20)
			fw_name = WL128X_FW_NAME;
		else
			fw_name	= WL1271_FW_NAME;
852 853 854 855 856 857 858 859 860 861
		break;
	default:
		wl1271_error("no compatible firmware for bss_type %d",
			     wl->bss_type);
		return -EINVAL;
	}

	wl1271_debug(DEBUG_BOOT, "booting firmware %s", fw_name);

	ret = request_firmware(&fw, fw_name, wl1271_wl_to_dev(wl));
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	if (ret < 0) {
		wl1271_error("could not get firmware: %d", ret);
		return ret;
	}

	if (fw->size % 4) {
		wl1271_error("firmware size is not multiple of 32 bits: %zu",
			     fw->size);
		ret = -EILSEQ;
		goto out;
	}

875
	vfree(wl->fw);
L
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876
	wl->fw_len = fw->size;
877
	wl->fw = vmalloc(wl->fw_len);
L
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878 879 880 881 882 883 884 885

	if (!wl->fw) {
		wl1271_error("could not allocate memory for the firmware");
		ret = -ENOMEM;
		goto out;
	}

	memcpy(wl->fw, fw->data, wl->fw_len);
886
	wl->fw_bss_type = wl->bss_type;
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887 888 889 890 891 892 893 894 895 896 897 898 899
	ret = 0;

out:
	release_firmware(fw);

	return ret;
}

static int wl1271_fetch_nvs(struct wl1271 *wl)
{
	const struct firmware *fw;
	int ret;

900
	ret = request_firmware(&fw, WL12XX_NVS_NAME, wl1271_wl_to_dev(wl));
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901 902 903 904 905 906

	if (ret < 0) {
		wl1271_error("could not get nvs file: %d", ret);
		return ret;
	}

907
	wl->nvs = kmemdup(fw->data, fw->size, GFP_KERNEL);
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908 909 910 911 912 913 914

	if (!wl->nvs) {
		wl1271_error("could not allocate memory for the nvs file");
		ret = -ENOMEM;
		goto out;
	}

915 916
	wl->nvs_len = fw->size;

L
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917 918 919 920 921 922
out:
	release_firmware(fw);

	return ret;
}

923 924 925 926 927 928 929 930 931 932 933 934
static void wl1271_recovery_work(struct work_struct *work)
{
	struct wl1271 *wl =
		container_of(work, struct wl1271, recovery_work);

	mutex_lock(&wl->mutex);

	if (wl->state != WL1271_STATE_ON)
		goto out;

	wl1271_info("Hardware recovery in progress.");

935 936 937
	if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
		ieee80211_connection_loss(wl->vif);

938 939 940 941 942 943 944 945
	/* reboot the chipset */
	__wl1271_op_remove_interface(wl);
	ieee80211_restart_hw(wl->hw);

out:
	mutex_unlock(&wl->mutex);
}

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946 947 948 949 950
static void wl1271_fw_wakeup(struct wl1271 *wl)
{
	u32 elp_reg;

	elp_reg = ELPCTRL_WAKE_UP;
951
	wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
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952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970
}

static int wl1271_setup(struct wl1271 *wl)
{
	wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
	if (!wl->fw_status)
		return -ENOMEM;

	wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
	if (!wl->tx_res_if) {
		kfree(wl->fw_status);
		return -ENOMEM;
	}

	return 0;
}

static int wl1271_chip_wakeup(struct wl1271 *wl)
{
971
	struct wl1271_partition_set partition;
L
Luciano Coelho 已提交
972 973
	int ret = 0;

J
Juuso Oikarinen 已提交
974
	msleep(WL1271_PRE_POWER_ON_SLEEP);
975 976 977
	ret = wl1271_power_on(wl);
	if (ret < 0)
		goto out;
L
Luciano Coelho 已提交
978
	msleep(WL1271_POWER_ON_SLEEP);
979 980
	wl1271_io_reset(wl);
	wl1271_io_init(wl);
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981 982 983

	/* We don't need a real memory partition here, because we only want
	 * to use the registers at this point. */
984 985 986 987
	memset(&partition, 0, sizeof(partition));
	partition.reg.start = REGISTERS_BASE;
	partition.reg.size = REGISTERS_DOWN_SIZE;
	wl1271_set_partition(wl, &partition);
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988 989 990 991 992 993 994

	/* ELP module wake up */
	wl1271_fw_wakeup(wl);

	/* whal_FwCtrl_BootSm() */

	/* 0. read chip id from CHIP_ID */
T
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995
	wl->chip.id = wl1271_read32(wl, CHIP_ID_B);
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996 997 998 999 1000 1001 1002 1003 1004 1005

	/* 1. check if chip id is valid */

	switch (wl->chip.id) {
	case CHIP_ID_1271_PG10:
		wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
			       wl->chip.id);

		ret = wl1271_setup(wl);
		if (ret < 0)
1006
			goto out;
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1007 1008 1009 1010 1011 1012 1013
		break;
	case CHIP_ID_1271_PG20:
		wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
			     wl->chip.id);

		ret = wl1271_setup(wl);
		if (ret < 0)
1014
			goto out;
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1015
		break;
1016 1017 1018 1019 1020 1021 1022
	case CHIP_ID_1283_PG20:
		wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1283 PG20)",
			     wl->chip.id);

		ret = wl1271_setup(wl);
		if (ret < 0)
			goto out;
1023 1024
		if (wl1271_set_block_size(wl))
			wl->quirks |= WL12XX_QUIRK_BLOCKSIZE_ALIGNMENT;
1025 1026
		break;
	case CHIP_ID_1283_PG10:
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1027
	default:
1028
		wl1271_warning("unsupported chip id: 0x%x", wl->chip.id);
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1029
		ret = -ENODEV;
1030
		goto out;
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1031 1032
	}

1033 1034
	/* Make sure the firmware type matches the BSS type */
	if (wl->fw == NULL || wl->fw_bss_type != wl->bss_type) {
L
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1035 1036
		ret = wl1271_fetch_firmware(wl);
		if (ret < 0)
1037
			goto out;
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1038 1039 1040 1041 1042 1043
	}

	/* No NVS from netlink, try to get it from the filesystem */
	if (wl->nvs == NULL) {
		ret = wl1271_fetch_nvs(wl);
		if (ret < 0)
1044
			goto out;
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1045 1046 1047 1048 1049 1050
	}

out:
	return ret;
}

1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068
static unsigned int wl1271_get_fw_ver_quirks(struct wl1271 *wl)
{
	unsigned int quirks = 0;
	unsigned int *fw_ver = wl->chip.fw_ver;

	/* Only for wl127x */
	if ((fw_ver[FW_VER_CHIP] == FW_VER_CHIP_WL127X) &&
	    /* Check STA version */
	    (((fw_ver[FW_VER_IF_TYPE] == FW_VER_IF_TYPE_STA) &&
	      (fw_ver[FW_VER_MINOR] < FW_VER_MINOR_1_SPARE_STA_MIN)) ||
	     /* Check AP version */
	     ((fw_ver[FW_VER_IF_TYPE] == FW_VER_IF_TYPE_AP) &&
	      (fw_ver[FW_VER_MINOR] < FW_VER_MINOR_1_SPARE_AP_MIN))))
		quirks |= WL12XX_QUIRK_USE_2_SPARE_BLOCKS;

	return quirks;
}

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1069 1070
int wl1271_plt_start(struct wl1271 *wl)
{
1071
	int retries = WL1271_BOOT_RETRIES;
L
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1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084
	int ret;

	mutex_lock(&wl->mutex);

	wl1271_notice("power up");

	if (wl->state != WL1271_STATE_OFF) {
		wl1271_error("cannot go into PLT state because not "
			     "in off state: %d", wl->state);
		ret = -EBUSY;
		goto out;
	}

1085 1086
	wl->bss_type = BSS_TYPE_STA_BSS;

1087 1088 1089 1090 1091
	while (retries) {
		retries--;
		ret = wl1271_chip_wakeup(wl);
		if (ret < 0)
			goto power_off;
L
Luciano Coelho 已提交
1092

1093 1094 1095
		ret = wl1271_boot(wl);
		if (ret < 0)
			goto power_off;
1096

1097 1098 1099
		ret = wl1271_plt_init(wl);
		if (ret < 0)
			goto irq_disable;
1100

1101 1102
		wl->state = WL1271_STATE_PLT;
		wl1271_notice("firmware booted in PLT mode (%s)",
L
Levi, Shahar 已提交
1103
			      wl->chip.fw_ver_str);
1104 1105 1106

		/* Check if any quirks are needed with older fw versions */
		wl->quirks |= wl1271_get_fw_ver_quirks(wl);
1107
		goto out;
1108

1109 1110 1111 1112 1113 1114 1115 1116 1117
irq_disable:
		mutex_unlock(&wl->mutex);
		/* Unlocking the mutex in the middle of handling is
		   inherently unsafe. In this case we deem it safe to do,
		   because we need to let any possibly pending IRQ out of
		   the system (and while we are WL1271_STATE_OFF the IRQ
		   work function will not do anything.) Also, any other
		   possible concurrent operations will fail due to the
		   current state, hence the wl1271 struct should be safe. */
1118 1119 1120
		wl1271_disable_interrupts(wl);
		wl1271_flush_deferred_work(wl);
		cancel_work_sync(&wl->netstack_work);
1121 1122 1123 1124
		mutex_lock(&wl->mutex);
power_off:
		wl1271_power_off(wl);
	}
L
Luciano Coelho 已提交
1125

1126 1127
	wl1271_error("firmware boot in PLT mode failed despite %d retries",
		     WL1271_BOOT_RETRIES);
L
Luciano Coelho 已提交
1128 1129 1130 1131 1132 1133
out:
	mutex_unlock(&wl->mutex);

	return ret;
}

1134
static int __wl1271_plt_stop(struct wl1271 *wl)
L
Luciano Coelho 已提交
1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149
{
	int ret = 0;

	wl1271_notice("power down");

	if (wl->state != WL1271_STATE_PLT) {
		wl1271_error("cannot power down because not in PLT "
			     "state: %d", wl->state);
		ret = -EBUSY;
		goto out;
	}

	wl1271_power_off(wl);

	wl->state = WL1271_STATE_OFF;
1150
	wl->rx_counter = 0;
L
Luciano Coelho 已提交
1151 1152

	mutex_unlock(&wl->mutex);
1153 1154 1155
	wl1271_disable_interrupts(wl);
	wl1271_flush_deferred_work(wl);
	cancel_work_sync(&wl->netstack_work);
1156
	cancel_work_sync(&wl->recovery_work);
1157 1158 1159 1160 1161 1162 1163 1164
	mutex_lock(&wl->mutex);
out:
	return ret;
}

int wl1271_plt_stop(struct wl1271 *wl)
{
	int ret;
1165

1166 1167 1168
	mutex_lock(&wl->mutex);
	ret = __wl1271_plt_stop(wl);
	mutex_unlock(&wl->mutex);
L
Luciano Coelho 已提交
1169 1170 1171
	return ret;
}

1172
static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
L
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1173 1174
{
	struct wl1271 *wl = hw->priv;
1175
	unsigned long flags;
1176
	int q;
1177
	u8 hlid = 0;
L
Luciano Coelho 已提交
1178

I
Ido Yariv 已提交
1179 1180 1181 1182 1183
	q = wl1271_tx_get_queue(skb_get_queue_mapping(skb));

	if (wl->bss_type == BSS_TYPE_AP_BSS)
		hlid = wl1271_tx_get_hlid(skb);

1184
	spin_lock_irqsave(&wl->wl_lock, flags);
I
Ido Yariv 已提交
1185

1186
	wl->tx_queue_count++;
1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197

	/*
	 * The workqueue is slow to process the tx_queue and we need stop
	 * the queue here, otherwise the queue will get too long.
	 */
	if (wl->tx_queue_count >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
		wl1271_debug(DEBUG_TX, "op_tx: stopping queues");
		ieee80211_stop_queues(wl->hw);
		set_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags);
	}

1198
	/* queue the packet */
1199 1200 1201 1202 1203 1204
	if (wl->bss_type == BSS_TYPE_AP_BSS) {
		wl1271_debug(DEBUG_TX, "queue skb hlid %d q %d", hlid, q);
		skb_queue_tail(&wl->links[hlid].tx_queue[q], skb);
	} else {
		skb_queue_tail(&wl->tx_queue[q], skb);
	}
L
Luciano Coelho 已提交
1205 1206 1207 1208 1209 1210

	/*
	 * The chip specific setup must run before the first TX packet -
	 * before that, the tx_work will not be initialized!
	 */

I
Ido Yariv 已提交
1211 1212
	if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
	    !test_bit(WL1271_FLAG_TX_PENDING, &wl->flags))
I
Ido Yariv 已提交
1213
		ieee80211_queue_work(wl->hw, &wl->tx_work);
I
Ido Yariv 已提交
1214 1215

	spin_unlock_irqrestore(&wl->wl_lock, flags);
L
Luciano Coelho 已提交
1216 1217
}

1218 1219
int wl1271_tx_dummy_packet(struct wl1271 *wl)
{
1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247
	unsigned long flags;

	spin_lock_irqsave(&wl->wl_lock, flags);
	set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
	wl->tx_queue_count++;
	spin_unlock_irqrestore(&wl->wl_lock, flags);

	/* The FW is low on RX memory blocks, so send the dummy packet asap */
	if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags))
		wl1271_tx_work_locked(wl);

	/*
	 * If the FW TX is busy, TX work will be scheduled by the threaded
	 * interrupt handler function
	 */
	return 0;
}

/*
 * The size of the dummy packet should be at least 1400 bytes. However, in
 * order to minimize the number of bus transactions, aligning it to 512 bytes
 * boundaries could be beneficial, performance wise
 */
#define TOTAL_TX_DUMMY_PACKET_SIZE (ALIGN(1400, 512))

struct sk_buff *wl12xx_alloc_dummy_packet(struct wl1271 *wl)
{
	struct sk_buff *skb;
1248
	struct ieee80211_hdr_3addr *hdr;
1249 1250 1251 1252
	unsigned int dummy_packet_size;

	dummy_packet_size = TOTAL_TX_DUMMY_PACKET_SIZE -
			    sizeof(struct wl1271_tx_hw_descr) - sizeof(*hdr);
1253

1254
	skb = dev_alloc_skb(TOTAL_TX_DUMMY_PACKET_SIZE);
1255
	if (!skb) {
1256 1257
		wl1271_warning("Failed to allocate a dummy packet skb");
		return NULL;
1258 1259 1260 1261 1262 1263 1264
	}

	skb_reserve(skb, sizeof(struct wl1271_tx_hw_descr));

	hdr = (struct ieee80211_hdr_3addr *) skb_put(skb, sizeof(*hdr));
	memset(hdr, 0, sizeof(*hdr));
	hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1265 1266
					 IEEE80211_STYPE_NULLFUNC |
					 IEEE80211_FCTL_TODS);
1267

1268
	memset(skb_put(skb, dummy_packet_size), 0, dummy_packet_size);
1269

1270 1271
	/* Dummy packets require the TID to be management */
	skb->priority = WL1271_TID_MGMT;
1272

1273 1274 1275
	/* Initialize all fields that might be used */
	skb->queue_mapping = 0;
	memset(IEEE80211_SKB_CB(skb), 0, sizeof(struct ieee80211_tx_info));
1276

1277
	return skb;
1278 1279
}

1280

1281 1282 1283 1284
static struct notifier_block wl1271_dev_notifier = {
	.notifier_call = wl1271_dev_notify,
};

L
Luciano Coelho 已提交
1285
static int wl1271_op_start(struct ieee80211_hw *hw)
1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297
{
	wl1271_debug(DEBUG_MAC80211, "mac80211 start");

	/*
	 * We have to delay the booting of the hardware because
	 * we need to know the local MAC address before downloading and
	 * initializing the firmware. The MAC address cannot be changed
	 * after boot, and without the proper MAC address, the firmware
	 * will not function properly.
	 *
	 * The MAC address is first known when the corresponding interface
	 * is added. That is where we will initialize the hardware.
1298 1299 1300
	 *
	 * In addition, we currently have different firmwares for AP and managed
	 * operation. We will know which to boot according to interface type.
1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312
	 */

	return 0;
}

static void wl1271_op_stop(struct ieee80211_hw *hw)
{
	wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
}

static int wl1271_op_add_interface(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif)
L
Luciano Coelho 已提交
1313 1314
{
	struct wl1271 *wl = hw->priv;
1315
	struct wiphy *wiphy = hw->wiphy;
1316
	int retries = WL1271_BOOT_RETRIES;
L
Luciano Coelho 已提交
1317
	int ret = 0;
1318
	bool booted = false;
L
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1319

1320 1321
	wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
		     vif->type, vif->addr);
L
Luciano Coelho 已提交
1322 1323

	mutex_lock(&wl->mutex);
1324
	if (wl->vif) {
1325 1326
		wl1271_debug(DEBUG_MAC80211,
			     "multiple vifs are not supported yet");
1327 1328 1329 1330
		ret = -EBUSY;
		goto out;
	}

1331 1332 1333 1334 1335 1336 1337 1338 1339 1340
	/*
	 * in some very corner case HW recovery scenarios its possible to
	 * get here before __wl1271_op_remove_interface is complete, so
	 * opt out if that is the case.
	 */
	if (test_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags)) {
		ret = -EBUSY;
		goto out;
	}

1341 1342 1343
	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
		wl->bss_type = BSS_TYPE_STA_BSS;
1344
		wl->set_bss_type = BSS_TYPE_STA_BSS;
1345 1346 1347
		break;
	case NL80211_IFTYPE_ADHOC:
		wl->bss_type = BSS_TYPE_IBSS;
1348
		wl->set_bss_type = BSS_TYPE_STA_BSS;
1349
		break;
A
Arik Nemtsov 已提交
1350 1351 1352
	case NL80211_IFTYPE_AP:
		wl->bss_type = BSS_TYPE_AP_BSS;
		break;
1353 1354 1355 1356 1357 1358
	default:
		ret = -EOPNOTSUPP;
		goto out;
	}

	memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
L
Luciano Coelho 已提交
1359 1360 1361 1362 1363 1364 1365 1366

	if (wl->state != WL1271_STATE_OFF) {
		wl1271_error("cannot start because not in off state: %d",
			     wl->state);
		ret = -EBUSY;
		goto out;
	}

1367 1368 1369 1370 1371
	while (retries) {
		retries--;
		ret = wl1271_chip_wakeup(wl);
		if (ret < 0)
			goto power_off;
L
Luciano Coelho 已提交
1372

1373 1374 1375
		ret = wl1271_boot(wl);
		if (ret < 0)
			goto power_off;
L
Luciano Coelho 已提交
1376

1377 1378 1379
		ret = wl1271_hw_init(wl);
		if (ret < 0)
			goto irq_disable;
L
Luciano Coelho 已提交
1380

1381 1382
		booted = true;
		break;
1383

1384 1385 1386 1387 1388 1389 1390 1391 1392
irq_disable:
		mutex_unlock(&wl->mutex);
		/* Unlocking the mutex in the middle of handling is
		   inherently unsafe. In this case we deem it safe to do,
		   because we need to let any possibly pending IRQ out of
		   the system (and while we are WL1271_STATE_OFF the IRQ
		   work function will not do anything.) Also, any other
		   possible concurrent operations will fail due to the
		   current state, hence the wl1271 struct should be safe. */
1393 1394 1395
		wl1271_disable_interrupts(wl);
		wl1271_flush_deferred_work(wl);
		cancel_work_sync(&wl->netstack_work);
1396 1397 1398 1399
		mutex_lock(&wl->mutex);
power_off:
		wl1271_power_off(wl);
	}
1400

1401 1402 1403 1404 1405 1406 1407 1408
	if (!booted) {
		wl1271_error("firmware boot failed despite %d retries",
			     WL1271_BOOT_RETRIES);
		goto out;
	}

	wl->vif = vif;
	wl->state = WL1271_STATE_ON;
1409
	set_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags);
L
Levi, Shahar 已提交
1410
	wl1271_info("firmware booted (%s)", wl->chip.fw_ver_str);
1411 1412 1413

	/* update hw/fw version info in wiphy struct */
	wiphy->hw_version = wl->chip.id;
L
Levi, Shahar 已提交
1414
	strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
1415 1416
		sizeof(wiphy->fw_version));

1417 1418 1419
	/* Check if any quirks are needed with older fw versions */
	wl->quirks |= wl1271_get_fw_ver_quirks(wl);

1420 1421 1422 1423 1424 1425 1426 1427 1428 1429
	/*
	 * Now we know if 11a is supported (info from the NVS), so disable
	 * 11a channels if not supported
	 */
	if (!wl->enable_11a)
		wiphy->bands[IEEE80211_BAND_5GHZ]->n_channels = 0;

	wl1271_debug(DEBUG_MAC80211, "11a is %ssupported",
		     wl->enable_11a ? "" : "not ");

1430
out:
L
Luciano Coelho 已提交
1431 1432
	mutex_unlock(&wl->mutex);

1433
	mutex_lock(&wl_list_mutex);
1434
	if (!ret)
1435
		list_add(&wl->list, &wl_list);
1436
	mutex_unlock(&wl_list_mutex);
1437

L
Luciano Coelho 已提交
1438 1439 1440
	return ret;
}

1441
static void __wl1271_op_remove_interface(struct wl1271 *wl)
L
Luciano Coelho 已提交
1442 1443 1444
{
	int i;

1445
	wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
L
Luciano Coelho 已提交
1446

1447 1448 1449 1450
	/* because of hardware recovery, we may get here twice */
	if (wl->state != WL1271_STATE_ON)
		return;

1451
	wl1271_info("down");
L
Luciano Coelho 已提交
1452

1453
	mutex_lock(&wl_list_mutex);
1454
	list_del(&wl->list);
1455
	mutex_unlock(&wl_list_mutex);
1456

1457
	/* enable dyn ps just in case (if left on due to fw crash etc) */
1458
	if (wl->bss_type == BSS_TYPE_STA_BSS)
1459
		ieee80211_enable_dyn_ps(wl->vif);
1460

L
Luciano Coelho 已提交
1461 1462
	if (wl->scan.state != WL1271_SCAN_STATE_IDLE) {
		wl->scan.state = WL1271_SCAN_STATE_IDLE;
1463
		memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
1464
		wl->scan.req = NULL;
1465
		ieee80211_scan_completed(wl->hw, true);
L
Luciano Coelho 已提交
1466 1467
	}

1468 1469 1470 1471
	/*
	 * this must be before the cancel_work calls below, so that the work
	 * functions don't perform further work.
	 */
L
Luciano Coelho 已提交
1472 1473 1474 1475
	wl->state = WL1271_STATE_OFF;

	mutex_unlock(&wl->mutex);

1476 1477
	wl1271_disable_interrupts(wl);
	wl1271_flush_deferred_work(wl);
1478
	cancel_delayed_work_sync(&wl->scan_complete_work);
1479
	cancel_work_sync(&wl->netstack_work);
L
Luciano Coelho 已提交
1480
	cancel_work_sync(&wl->tx_work);
1481
	cancel_delayed_work_sync(&wl->pspoll_work);
1482
	cancel_delayed_work_sync(&wl->elp_work);
L
Luciano Coelho 已提交
1483 1484 1485 1486

	mutex_lock(&wl->mutex);

	/* let's notify MAC80211 about the remaining pending TX frames */
1487
	wl1271_tx_reset(wl);
L
Luciano Coelho 已提交
1488 1489 1490 1491 1492 1493
	wl1271_power_off(wl);

	memset(wl->bssid, 0, ETH_ALEN);
	memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
	wl->ssid_len = 0;
	wl->bss_type = MAX_BSS_TYPE;
1494
	wl->set_bss_type = MAX_BSS_TYPE;
1495
	wl->band = IEEE80211_BAND_2GHZ;
L
Luciano Coelho 已提交
1496 1497

	wl->rx_counter = 0;
1498
	wl->psm_entry_retry = 0;
L
Luciano Coelho 已提交
1499 1500
	wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
	wl->tx_blocks_available = 0;
1501
	wl->tx_allocated_blocks = 0;
L
Luciano Coelho 已提交
1502 1503
	wl->tx_results_count = 0;
	wl->tx_packets_count = 0;
1504
	wl->tx_security_last_seq = 0;
1505
	wl->tx_security_seq = 0;
L
Luciano Coelho 已提交
1506 1507
	wl->time_offset = 0;
	wl->session_counter = 0;
1508
	wl->rate_set = CONF_TX_RATE_MASK_BASIC;
1509
	wl->vif = NULL;
1510
	wl->filters = 0;
1511
	wl1271_free_ap_keys(wl);
1512
	memset(wl->ap_hlid_map, 0, sizeof(wl->ap_hlid_map));
1513 1514
	wl->ap_fw_ps_map = 0;
	wl->ap_ps_map = 0;
1515

1516 1517 1518 1519 1520 1521 1522
	/*
	 * this is performed after the cancel_work calls and the associated
	 * mutex_lock, so that wl1271_op_add_interface does not accidentally
	 * get executed before all these vars have been reset.
	 */
	wl->flags = 0;

L
Luciano Coelho 已提交
1523 1524 1525 1526
	for (i = 0; i < NUM_TX_QUEUES; i++)
		wl->tx_blocks_freed[i] = 0;

	wl1271_debugfs_reset(wl);
1527 1528 1529 1530 1531 1532 1533

	kfree(wl->fw_status);
	wl->fw_status = NULL;
	kfree(wl->tx_res_if);
	wl->tx_res_if = NULL;
	kfree(wl->target_mem_map);
	wl->target_mem_map = NULL;
1534
}
1535

1536 1537 1538 1539 1540 1541
static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif)
{
	struct wl1271 *wl = hw->priv;

	mutex_lock(&wl->mutex);
1542 1543 1544 1545 1546 1547 1548 1549
	/*
	 * wl->vif can be null here if someone shuts down the interface
	 * just when hardware recovery has been started.
	 */
	if (wl->vif) {
		WARN_ON(wl->vif != vif);
		__wl1271_op_remove_interface(wl);
	}
1550

1551
	mutex_unlock(&wl->mutex);
1552
	cancel_work_sync(&wl->recovery_work);
L
Luciano Coelho 已提交
1553 1554
}

O
Ohad Ben-Cohen 已提交
1555
void wl1271_configure_filters(struct wl1271 *wl, unsigned int filters)
1556
{
1557
	wl1271_set_default_filters(wl);
1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587

	/* combine requested filters with current filter config */
	filters = wl->filters | filters;

	wl1271_debug(DEBUG_FILTERS, "RX filters set: ");

	if (filters & FIF_PROMISC_IN_BSS) {
		wl1271_debug(DEBUG_FILTERS, " - FIF_PROMISC_IN_BSS");
		wl->rx_config &= ~CFG_UNI_FILTER_EN;
		wl->rx_config |= CFG_BSSID_FILTER_EN;
	}
	if (filters & FIF_BCN_PRBRESP_PROMISC) {
		wl1271_debug(DEBUG_FILTERS, " - FIF_BCN_PRBRESP_PROMISC");
		wl->rx_config &= ~CFG_BSSID_FILTER_EN;
		wl->rx_config &= ~CFG_SSID_FILTER_EN;
	}
	if (filters & FIF_OTHER_BSS) {
		wl1271_debug(DEBUG_FILTERS, " - FIF_OTHER_BSS");
		wl->rx_config &= ~CFG_BSSID_FILTER_EN;
	}
	if (filters & FIF_CONTROL) {
		wl1271_debug(DEBUG_FILTERS, " - FIF_CONTROL");
		wl->rx_filter |= CFG_RX_CTL_EN;
	}
	if (filters & FIF_FCSFAIL) {
		wl1271_debug(DEBUG_FILTERS, " - FIF_FCSFAIL");
		wl->rx_filter |= CFG_RX_FCS_ERROR;
	}
}

1588
static int wl1271_dummy_join(struct wl1271 *wl)
1589
{
1590
	int ret = 0;
1591 1592 1593 1594 1595 1596
	/* we need to use a dummy BSSID for now */
	static const u8 dummy_bssid[ETH_ALEN] = { 0x0b, 0xad, 0xde,
						  0xad, 0xbe, 0xef };

	memcpy(wl->bssid, dummy_bssid, ETH_ALEN);

1597 1598 1599
	/* pass through frames from all BSS */
	wl1271_configure_filters(wl, FIF_OTHER_BSS);

1600
	ret = wl1271_cmd_join(wl, wl->set_bss_type);
1601 1602 1603
	if (ret < 0)
		goto out;

1604
	set_bit(WL1271_FLAG_JOINED, &wl->flags);
1605 1606 1607 1608 1609

out:
	return ret;
}

1610
static int wl1271_join(struct wl1271 *wl, bool set_assoc)
1611 1612 1613
{
	int ret;

1614 1615 1616 1617
	/*
	 * One of the side effects of the JOIN command is that is clears
	 * WPA/WPA2 keys from the chipset. Performing a JOIN while associated
	 * to a WPA/WPA2 access point will therefore kill the data-path.
1618 1619 1620 1621
	 * Currently the only valid scenario for JOIN during association
	 * is on roaming, in which case we will also be given new keys.
	 * Keep the below message for now, unless it starts bothering
	 * users who really like to roam a lot :)
1622 1623 1624 1625 1626 1627 1628
	 */
	if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
		wl1271_info("JOIN while associated.");

	if (set_assoc)
		set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);

1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665
	ret = wl1271_cmd_join(wl, wl->set_bss_type);
	if (ret < 0)
		goto out;

	set_bit(WL1271_FLAG_JOINED, &wl->flags);

	if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
		goto out;

	/*
	 * The join command disable the keep-alive mode, shut down its process,
	 * and also clear the template config, so we need to reset it all after
	 * the join. The acx_aid starts the keep-alive process, and the order
	 * of the commands below is relevant.
	 */
	ret = wl1271_acx_keep_alive_mode(wl, true);
	if (ret < 0)
		goto out;

	ret = wl1271_acx_aid(wl, wl->aid);
	if (ret < 0)
		goto out;

	ret = wl1271_cmd_build_klv_null_data(wl);
	if (ret < 0)
		goto out;

	ret = wl1271_acx_keep_alive_config(wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
					   ACX_KEEP_ALIVE_TPL_VALID);
	if (ret < 0)
		goto out;

out:
	return ret;
}

static int wl1271_unjoin(struct wl1271 *wl)
1666 1667 1668 1669 1670 1671 1672 1673
{
	int ret;

	/* to stop listening to a channel, we disconnect */
	ret = wl1271_cmd_disconnect(wl);
	if (ret < 0)
		goto out;

1674
	clear_bit(WL1271_FLAG_JOINED, &wl->flags);
1675
	memset(wl->bssid, 0, ETH_ALEN);
1676

O
Ohad Ben-Cohen 已提交
1677
	/* stop filtering packets based on bssid */
1678
	wl1271_configure_filters(wl, FIF_OTHER_BSS);
1679 1680 1681 1682 1683

out:
	return ret;
}

1684 1685 1686 1687 1688 1689 1690 1691
static void wl1271_set_band_rate(struct wl1271 *wl)
{
	if (wl->band == IEEE80211_BAND_2GHZ)
		wl->basic_rate_set = wl->conf.tx.basic_rate;
	else
		wl->basic_rate_set = wl->conf.tx.basic_rate_5;
}

1692
static int wl1271_sta_handle_idle(struct wl1271 *wl, bool idle)
1693 1694 1695 1696 1697 1698 1699 1700 1701
{
	int ret;

	if (idle) {
		if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
			ret = wl1271_unjoin(wl);
			if (ret < 0)
				goto out;
		}
A
Arik Nemtsov 已提交
1702
		wl->rate_set = wl1271_tx_min_rate_get(wl);
1703
		ret = wl1271_acx_sta_rate_policies(wl);
1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726
		if (ret < 0)
			goto out;
		ret = wl1271_acx_keep_alive_config(
			wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
			ACX_KEEP_ALIVE_TPL_INVALID);
		if (ret < 0)
			goto out;
		set_bit(WL1271_FLAG_IDLE, &wl->flags);
	} else {
		/* increment the session counter */
		wl->session_counter++;
		if (wl->session_counter >= SESSION_COUNTER_MAX)
			wl->session_counter = 0;
		ret = wl1271_dummy_join(wl);
		if (ret < 0)
			goto out;
		clear_bit(WL1271_FLAG_IDLE, &wl->flags);
	}

out:
	return ret;
}

L
Luciano Coelho 已提交
1727 1728 1729 1730 1731
static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
{
	struct wl1271 *wl = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	int channel, ret = 0;
1732
	bool is_ap;
L
Luciano Coelho 已提交
1733 1734 1735

	channel = ieee80211_frequency_to_channel(conf->channel->center_freq);

1736 1737
	wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s"
		     " changed 0x%x",
L
Luciano Coelho 已提交
1738 1739
		     channel,
		     conf->flags & IEEE80211_CONF_PS ? "on" : "off",
1740
		     conf->power_level,
1741 1742
		     conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use",
			 changed);
L
Luciano Coelho 已提交
1743

1744 1745 1746 1747 1748 1749 1750 1751 1752
	/*
	 * mac80211 will go to idle nearly immediately after transmitting some
	 * frames, such as the deauth. To make sure those frames reach the air,
	 * wait here until the TX queue is fully flushed.
	 */
	if ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
	    (conf->flags & IEEE80211_CONF_IDLE))
		wl1271_tx_flush(wl);

L
Luciano Coelho 已提交
1753 1754
	mutex_lock(&wl->mutex);

1755
	if (unlikely(wl->state == WL1271_STATE_OFF)) {
1756 1757 1758 1759 1760 1761
		/* we support configuring the channel and band while off */
		if ((changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
			wl->band = conf->channel->band;
			wl->channel = channel;
		}

1762
		goto out;
1763
	}
1764

1765 1766
	is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);

1767
	ret = wl1271_ps_elp_wakeup(wl);
L
Luciano Coelho 已提交
1768 1769 1770
	if (ret < 0)
		goto out;

1771
	/* if the channel changes while joined, join again */
1772 1773 1774
	if (changed & IEEE80211_CONF_CHANGE_CHANNEL &&
	    ((wl->band != conf->channel->band) ||
	     (wl->channel != channel))) {
1775 1776 1777
		wl->band = conf->channel->band;
		wl->channel = channel;

1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789
		if (!is_ap) {
			/*
			 * FIXME: the mac80211 should really provide a fixed
			 * rate to use here. for now, just use the smallest
			 * possible rate for the band as a fixed rate for
			 * association frames and other control messages.
			 */
			if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
				wl1271_set_band_rate(wl);

			wl->basic_rate = wl1271_tx_min_rate_get(wl);
			ret = wl1271_acx_sta_rate_policies(wl);
1790
			if (ret < 0)
1791
				wl1271_warning("rate policy for channel "
1792
					       "failed %d", ret);
1793 1794 1795 1796 1797 1798 1799

			if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
				ret = wl1271_join(wl, false);
				if (ret < 0)
					wl1271_warning("cmd join on channel "
						       "failed %d", ret);
			}
1800 1801 1802
		}
	}

1803 1804 1805
	if (changed & IEEE80211_CONF_CHANGE_IDLE && !is_ap) {
		ret = wl1271_sta_handle_idle(wl,
					conf->flags & IEEE80211_CONF_IDLE);
1806 1807
		if (ret < 0)
			wl1271_warning("idle mode change failed %d", ret);
L
Luciano Coelho 已提交
1808 1809
	}

1810 1811 1812 1813 1814 1815 1816
	/*
	 * if mac80211 changes the PSM mode, make sure the mode is not
	 * incorrectly changed after the pspoll failure active window.
	 */
	if (changed & IEEE80211_CONF_CHANGE_PS)
		clear_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags);

1817 1818 1819
	if (conf->flags & IEEE80211_CONF_PS &&
	    !test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
		set_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
L
Luciano Coelho 已提交
1820 1821 1822 1823 1824 1825

		/*
		 * We enter PSM only if we're already associated.
		 * If we're not, we'll enter it when joining an SSID,
		 * through the bss_info_changed() hook.
		 */
1826
		if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
1827
			wl1271_debug(DEBUG_PSM, "psm enabled");
J
Juuso Oikarinen 已提交
1828
			ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
1829
						 wl->basic_rate, true);
1830
		}
L
Luciano Coelho 已提交
1831
	} else if (!(conf->flags & IEEE80211_CONF_PS) &&
1832
		   test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
1833
		wl1271_debug(DEBUG_PSM, "psm disabled");
L
Luciano Coelho 已提交
1834

1835
		clear_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
L
Luciano Coelho 已提交
1836

1837
		if (test_bit(WL1271_FLAG_PSM, &wl->flags))
J
Juuso Oikarinen 已提交
1838
			ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
1839
						 wl->basic_rate, true);
L
Luciano Coelho 已提交
1840 1841 1842 1843 1844
	}

	if (conf->power_level != wl->power_level) {
		ret = wl1271_acx_tx_power(wl, conf->power_level);
		if (ret < 0)
1845
			goto out_sleep;
L
Luciano Coelho 已提交
1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858

		wl->power_level = conf->power_level;
	}

out_sleep:
	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);

	return ret;
}

J
Juuso Oikarinen 已提交
1859 1860 1861 1862 1863 1864
struct wl1271_filter_params {
	bool enabled;
	int mc_list_length;
	u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
};

1865 1866
static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
				       struct netdev_hw_addr_list *mc_list)
1867 1868
{
	struct wl1271_filter_params *fp;
1869
	struct netdev_hw_addr *ha;
1870
	struct wl1271 *wl = hw->priv;
1871

1872 1873
	if (unlikely(wl->state == WL1271_STATE_OFF))
		return 0;
1874

1875
	fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
1876 1877 1878 1879 1880 1881 1882
	if (!fp) {
		wl1271_error("Out of memory setting filters.");
		return 0;
	}

	/* update multicast filtering parameters */
	fp->mc_list_length = 0;
1883 1884 1885 1886 1887
	if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
		fp->enabled = false;
	} else {
		fp->enabled = true;
		netdev_hw_addr_list_for_each(ha, mc_list) {
1888
			memcpy(fp->mc_list[fp->mc_list_length],
1889
					ha->addr, ETH_ALEN);
1890
			fp->mc_list_length++;
1891
		}
1892 1893
	}

J
Juuso Oikarinen 已提交
1894
	return (u64)(unsigned long)fp;
1895
}
L
Luciano Coelho 已提交
1896

J
Juuso Oikarinen 已提交
1897 1898 1899 1900 1901 1902 1903
#define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
				  FIF_ALLMULTI | \
				  FIF_FCSFAIL | \
				  FIF_BCN_PRBRESP_PROMISC | \
				  FIF_CONTROL | \
				  FIF_OTHER_BSS)

L
Luciano Coelho 已提交
1904 1905
static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
				       unsigned int changed,
1906
				       unsigned int *total, u64 multicast)
L
Luciano Coelho 已提交
1907
{
J
Juuso Oikarinen 已提交
1908
	struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
L
Luciano Coelho 已提交
1909
	struct wl1271 *wl = hw->priv;
J
Juuso Oikarinen 已提交
1910
	int ret;
L
Luciano Coelho 已提交
1911

1912 1913
	wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter changed %x"
		     " total %x", changed, *total);
L
Luciano Coelho 已提交
1914

J
Juuso Oikarinen 已提交
1915 1916
	mutex_lock(&wl->mutex);

1917 1918 1919 1920
	*total &= WL1271_SUPPORTED_FILTERS;
	changed &= WL1271_SUPPORTED_FILTERS;

	if (unlikely(wl->state == WL1271_STATE_OFF))
J
Juuso Oikarinen 已提交
1921 1922
		goto out;

1923
	ret = wl1271_ps_elp_wakeup(wl);
J
Juuso Oikarinen 已提交
1924 1925 1926
	if (ret < 0)
		goto out;

1927 1928 1929 1930 1931 1932 1933 1934 1935 1936
	if (wl->bss_type != BSS_TYPE_AP_BSS) {
		if (*total & FIF_ALLMULTI)
			ret = wl1271_acx_group_address_tbl(wl, false, NULL, 0);
		else if (fp)
			ret = wl1271_acx_group_address_tbl(wl, fp->enabled,
							   fp->mc_list,
							   fp->mc_list_length);
		if (ret < 0)
			goto out_sleep;
	}
L
Luciano Coelho 已提交
1937

J
Juuso Oikarinen 已提交
1938 1939 1940
	/* determine, whether supported filter values have changed */
	if (changed == 0)
		goto out_sleep;
1941

1942 1943 1944 1945
	/* configure filters */
	wl->filters = *total;
	wl1271_configure_filters(wl, 0);

J
Juuso Oikarinen 已提交
1946 1947 1948 1949 1950 1951 1952 1953 1954 1955
	/* apply configured filters */
	ret = wl1271_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
	if (ret < 0)
		goto out_sleep;

out_sleep:
	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);
1956
	kfree(fp);
L
Luciano Coelho 已提交
1957 1958
}

1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125
static int wl1271_record_ap_key(struct wl1271 *wl, u8 id, u8 key_type,
			u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
			u16 tx_seq_16)
{
	struct wl1271_ap_key *ap_key;
	int i;

	wl1271_debug(DEBUG_CRYPT, "record ap key id %d", (int)id);

	if (key_size > MAX_KEY_SIZE)
		return -EINVAL;

	/*
	 * Find next free entry in ap_keys. Also check we are not replacing
	 * an existing key.
	 */
	for (i = 0; i < MAX_NUM_KEYS; i++) {
		if (wl->recorded_ap_keys[i] == NULL)
			break;

		if (wl->recorded_ap_keys[i]->id == id) {
			wl1271_warning("trying to record key replacement");
			return -EINVAL;
		}
	}

	if (i == MAX_NUM_KEYS)
		return -EBUSY;

	ap_key = kzalloc(sizeof(*ap_key), GFP_KERNEL);
	if (!ap_key)
		return -ENOMEM;

	ap_key->id = id;
	ap_key->key_type = key_type;
	ap_key->key_size = key_size;
	memcpy(ap_key->key, key, key_size);
	ap_key->hlid = hlid;
	ap_key->tx_seq_32 = tx_seq_32;
	ap_key->tx_seq_16 = tx_seq_16;

	wl->recorded_ap_keys[i] = ap_key;
	return 0;
}

static void wl1271_free_ap_keys(struct wl1271 *wl)
{
	int i;

	for (i = 0; i < MAX_NUM_KEYS; i++) {
		kfree(wl->recorded_ap_keys[i]);
		wl->recorded_ap_keys[i] = NULL;
	}
}

static int wl1271_ap_init_hwenc(struct wl1271 *wl)
{
	int i, ret = 0;
	struct wl1271_ap_key *key;
	bool wep_key_added = false;

	for (i = 0; i < MAX_NUM_KEYS; i++) {
		if (wl->recorded_ap_keys[i] == NULL)
			break;

		key = wl->recorded_ap_keys[i];
		ret = wl1271_cmd_set_ap_key(wl, KEY_ADD_OR_REPLACE,
					    key->id, key->key_type,
					    key->key_size, key->key,
					    key->hlid, key->tx_seq_32,
					    key->tx_seq_16);
		if (ret < 0)
			goto out;

		if (key->key_type == KEY_WEP)
			wep_key_added = true;
	}

	if (wep_key_added) {
		ret = wl1271_cmd_set_ap_default_wep_key(wl, wl->default_key);
		if (ret < 0)
			goto out;
	}

out:
	wl1271_free_ap_keys(wl);
	return ret;
}

static int wl1271_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
		       u8 key_size, const u8 *key, u32 tx_seq_32,
		       u16 tx_seq_16, struct ieee80211_sta *sta)
{
	int ret;
	bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);

	if (is_ap) {
		struct wl1271_station *wl_sta;
		u8 hlid;

		if (sta) {
			wl_sta = (struct wl1271_station *)sta->drv_priv;
			hlid = wl_sta->hlid;
		} else {
			hlid = WL1271_AP_BROADCAST_HLID;
		}

		if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
			/*
			 * We do not support removing keys after AP shutdown.
			 * Pretend we do to make mac80211 happy.
			 */
			if (action != KEY_ADD_OR_REPLACE)
				return 0;

			ret = wl1271_record_ap_key(wl, id,
					     key_type, key_size,
					     key, hlid, tx_seq_32,
					     tx_seq_16);
		} else {
			ret = wl1271_cmd_set_ap_key(wl, action,
					     id, key_type, key_size,
					     key, hlid, tx_seq_32,
					     tx_seq_16);
		}

		if (ret < 0)
			return ret;
	} else {
		const u8 *addr;
		static const u8 bcast_addr[ETH_ALEN] = {
			0xff, 0xff, 0xff, 0xff, 0xff, 0xff
		};

		addr = sta ? sta->addr : bcast_addr;

		if (is_zero_ether_addr(addr)) {
			/* We dont support TX only encryption */
			return -EOPNOTSUPP;
		}

		/* The wl1271 does not allow to remove unicast keys - they
		   will be cleared automatically on next CMD_JOIN. Ignore the
		   request silently, as we dont want the mac80211 to emit
		   an error message. */
		if (action == KEY_REMOVE && !is_broadcast_ether_addr(addr))
			return 0;

		ret = wl1271_cmd_set_sta_key(wl, action,
					     id, key_type, key_size,
					     key, addr, tx_seq_32,
					     tx_seq_16);
		if (ret < 0)
			return ret;

		/* the default WEP key needs to be configured at least once */
		if (key_type == KEY_WEP) {
			ret = wl1271_cmd_set_sta_default_wep_key(wl,
							wl->default_key);
			if (ret < 0)
				return ret;
		}
	}

	return 0;
}

L
Luciano Coelho 已提交
2126 2127 2128 2129 2130 2131 2132
static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
			     struct ieee80211_vif *vif,
			     struct ieee80211_sta *sta,
			     struct ieee80211_key_conf *key_conf)
{
	struct wl1271 *wl = hw->priv;
	int ret;
2133 2134
	u32 tx_seq_32 = 0;
	u16 tx_seq_16 = 0;
L
Luciano Coelho 已提交
2135 2136 2137 2138
	u8 key_type;

	wl1271_debug(DEBUG_MAC80211, "mac80211 set key");

2139
	wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x sta: %p", cmd, sta);
L
Luciano Coelho 已提交
2140
	wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
2141
		     key_conf->cipher, key_conf->keyidx,
L
Luciano Coelho 已提交
2142 2143 2144 2145 2146
		     key_conf->keylen, key_conf->flags);
	wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);

	mutex_lock(&wl->mutex);

2147 2148 2149 2150 2151
	if (unlikely(wl->state == WL1271_STATE_OFF)) {
		ret = -EAGAIN;
		goto out_unlock;
	}

2152
	ret = wl1271_ps_elp_wakeup(wl);
L
Luciano Coelho 已提交
2153 2154 2155
	if (ret < 0)
		goto out_unlock;

2156 2157 2158
	switch (key_conf->cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
L
Luciano Coelho 已提交
2159 2160 2161 2162
		key_type = KEY_WEP;

		key_conf->hw_key_idx = key_conf->keyidx;
		break;
2163
	case WLAN_CIPHER_SUITE_TKIP:
L
Luciano Coelho 已提交
2164 2165 2166
		key_type = KEY_TKIP;

		key_conf->hw_key_idx = key_conf->keyidx;
2167 2168
		tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
		tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
L
Luciano Coelho 已提交
2169
		break;
2170
	case WLAN_CIPHER_SUITE_CCMP:
L
Luciano Coelho 已提交
2171 2172 2173
		key_type = KEY_AES;

		key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2174 2175
		tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
		tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
L
Luciano Coelho 已提交
2176
		break;
2177 2178 2179 2180 2181
	case WL1271_CIPHER_SUITE_GEM:
		key_type = KEY_GEM;
		tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
		tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
		break;
L
Luciano Coelho 已提交
2182
	default:
2183
		wl1271_error("Unknown key algo 0x%x", key_conf->cipher);
L
Luciano Coelho 已提交
2184 2185 2186 2187 2188 2189 2190

		ret = -EOPNOTSUPP;
		goto out_sleep;
	}

	switch (cmd) {
	case SET_KEY:
2191 2192 2193 2194
		ret = wl1271_set_key(wl, KEY_ADD_OR_REPLACE,
				 key_conf->keyidx, key_type,
				 key_conf->keylen, key_conf->key,
				 tx_seq_32, tx_seq_16, sta);
L
Luciano Coelho 已提交
2195 2196 2197 2198 2199 2200 2201
		if (ret < 0) {
			wl1271_error("Could not add or replace key");
			goto out_sleep;
		}
		break;

	case DISABLE_KEY:
2202 2203 2204 2205
		ret = wl1271_set_key(wl, KEY_REMOVE,
				     key_conf->keyidx, key_type,
				     key_conf->keylen, key_conf->key,
				     0, 0, sta);
L
Luciano Coelho 已提交
2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227
		if (ret < 0) {
			wl1271_error("Could not remove key");
			goto out_sleep;
		}
		break;

	default:
		wl1271_error("Unsupported key cmd 0x%x", cmd);
		ret = -EOPNOTSUPP;
		break;
	}

out_sleep:
	wl1271_ps_elp_sleep(wl);

out_unlock:
	mutex_unlock(&wl->mutex);

	return ret;
}

static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
2228
			     struct ieee80211_vif *vif,
L
Luciano Coelho 已提交
2229 2230 2231 2232 2233
			     struct cfg80211_scan_request *req)
{
	struct wl1271 *wl = hw->priv;
	int ret;
	u8 *ssid = NULL;
2234
	size_t len = 0;
L
Luciano Coelho 已提交
2235 2236 2237 2238 2239

	wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");

	if (req->n_ssids) {
		ssid = req->ssids[0].ssid;
2240
		len = req->ssids[0].ssid_len;
L
Luciano Coelho 已提交
2241 2242 2243 2244
	}

	mutex_lock(&wl->mutex);

2245 2246 2247 2248 2249 2250 2251 2252 2253 2254
	if (wl->state == WL1271_STATE_OFF) {
		/*
		 * We cannot return -EBUSY here because cfg80211 will expect
		 * a call to ieee80211_scan_completed if we do - in this case
		 * there won't be any call.
		 */
		ret = -EAGAIN;
		goto out;
	}

2255
	ret = wl1271_ps_elp_wakeup(wl);
L
Luciano Coelho 已提交
2256 2257 2258
	if (ret < 0)
		goto out;

2259
	ret = wl1271_scan(hw->priv, ssid, len, req);
L
Luciano Coelho 已提交
2260 2261 2262 2263 2264 2265 2266 2267 2268

	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);

	return ret;
}

2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280
static int wl1271_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
{
	struct wl1271 *wl = hw->priv;
	int ret = 0;

	mutex_lock(&wl->mutex);

	if (unlikely(wl->state == WL1271_STATE_OFF)) {
		ret = -EAGAIN;
		goto out;
	}

2281
	ret = wl1271_ps_elp_wakeup(wl);
2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296
	if (ret < 0)
		goto out;

	ret = wl1271_acx_frag_threshold(wl, (u16)value);
	if (ret < 0)
		wl1271_warning("wl1271_op_set_frag_threshold failed: %d", ret);

	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);

	return ret;
}

L
Luciano Coelho 已提交
2297 2298 2299
static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
	struct wl1271 *wl = hw->priv;
2300
	int ret = 0;
L
Luciano Coelho 已提交
2301 2302 2303

	mutex_lock(&wl->mutex);

2304 2305
	if (unlikely(wl->state == WL1271_STATE_OFF)) {
		ret = -EAGAIN;
2306
		goto out;
2307
	}
2308

2309
	ret = wl1271_ps_elp_wakeup(wl);
L
Luciano Coelho 已提交
2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324
	if (ret < 0)
		goto out;

	ret = wl1271_acx_rts_threshold(wl, (u16) value);
	if (ret < 0)
		wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);

	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);

	return ret;
}

2325
static int wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *skb,
2326
			    int offset)
2327
{
2328
	u8 *ptr = skb->data + offset;
2329 2330

	/* find the location of the ssid in the beacon */
2331
	while (ptr < skb->data + skb->len) {
2332 2333 2334
		if (ptr[0] == WLAN_EID_SSID) {
			wl->ssid_len = ptr[1];
			memcpy(wl->ssid, ptr+2, wl->ssid_len);
2335
			return 0;
2336
		}
2337
		ptr += (ptr[1] + 2);
2338
	}
2339

2340
	wl1271_error("No SSID in IEs!\n");
2341
	return -ENOENT;
2342 2343
}

2344
static int wl1271_bss_erp_info_changed(struct wl1271 *wl,
L
Luciano Coelho 已提交
2345 2346 2347
				       struct ieee80211_bss_conf *bss_conf,
				       u32 changed)
{
2348
	int ret = 0;
L
Luciano Coelho 已提交
2349

2350 2351 2352 2353 2354 2355 2356 2357 2358 2359
	if (changed & BSS_CHANGED_ERP_SLOT) {
		if (bss_conf->use_short_slot)
			ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
		else
			ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
		if (ret < 0) {
			wl1271_warning("Set slot time failed %d", ret);
			goto out;
		}
	}
L
Luciano Coelho 已提交
2360

2361 2362 2363 2364 2365 2366
	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
		if (bss_conf->use_short_preamble)
			wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
		else
			wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
	}
L
Luciano Coelho 已提交
2367

2368 2369 2370 2371 2372 2373 2374 2375 2376 2377
	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
		if (bss_conf->use_cts_prot)
			ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
		else
			ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
		if (ret < 0) {
			wl1271_warning("Set ctsprotect failed %d", ret);
			goto out;
		}
	}
2378

2379 2380 2381
out:
	return ret;
}
L
Luciano Coelho 已提交
2382

2383 2384 2385 2386 2387 2388 2389 2390 2391 2392
static int wl1271_bss_beacon_info_changed(struct wl1271 *wl,
					  struct ieee80211_vif *vif,
					  struct ieee80211_bss_conf *bss_conf,
					  u32 changed)
{
	bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
	int ret = 0;

	if ((changed & BSS_CHANGED_BEACON_INT)) {
		wl1271_debug(DEBUG_MASTER, "beacon interval updated: %d",
2393 2394 2395 2396 2397
			bss_conf->beacon_int);

		wl->beacon_int = bss_conf->beacon_int;
	}

2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452
	if ((changed & BSS_CHANGED_BEACON)) {
		struct ieee80211_hdr *hdr;
		int ieoffset = offsetof(struct ieee80211_mgmt,
					u.beacon.variable);
		struct sk_buff *beacon = ieee80211_beacon_get(wl->hw, vif);
		u16 tmpl_id;

		if (!beacon)
			goto out;

		wl1271_debug(DEBUG_MASTER, "beacon updated");

		ret = wl1271_ssid_set(wl, beacon, ieoffset);
		if (ret < 0) {
			dev_kfree_skb(beacon);
			goto out;
		}
		tmpl_id = is_ap ? CMD_TEMPL_AP_BEACON :
				  CMD_TEMPL_BEACON;
		ret = wl1271_cmd_template_set(wl, tmpl_id,
					      beacon->data,
					      beacon->len, 0,
					      wl1271_tx_min_rate_get(wl));
		if (ret < 0) {
			dev_kfree_skb(beacon);
			goto out;
		}

		hdr = (struct ieee80211_hdr *) beacon->data;
		hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
						 IEEE80211_STYPE_PROBE_RESP);

		tmpl_id = is_ap ? CMD_TEMPL_AP_PROBE_RESPONSE :
				  CMD_TEMPL_PROBE_RESPONSE;
		ret = wl1271_cmd_template_set(wl,
					      tmpl_id,
					      beacon->data,
					      beacon->len, 0,
					      wl1271_tx_min_rate_get(wl));
		dev_kfree_skb(beacon);
		if (ret < 0)
			goto out;
	}

out:
	return ret;
}

/* AP mode changes */
static void wl1271_bss_info_changed_ap(struct wl1271 *wl,
				       struct ieee80211_vif *vif,
				       struct ieee80211_bss_conf *bss_conf,
				       u32 changed)
{
	int ret = 0;
2453

2454 2455 2456
	if ((changed & BSS_CHANGED_BASIC_RATES)) {
		u32 rates = bss_conf->basic_rates;
		struct conf_tx_rate_class mgmt_rc;
2457

2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474
		wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl, rates);
		wl->basic_rate = wl1271_tx_min_rate_get(wl);
		wl1271_debug(DEBUG_AP, "basic rates: 0x%x",
			     wl->basic_rate_set);

		/* update the AP management rate policy with the new rates */
		mgmt_rc.enabled_rates = wl->basic_rate_set;
		mgmt_rc.long_retry_limit = 10;
		mgmt_rc.short_retry_limit = 10;
		mgmt_rc.aflags = 0;
		ret = wl1271_acx_ap_rate_policy(wl, &mgmt_rc,
						ACX_TX_AP_MODE_MGMT_RATE);
		if (ret < 0) {
			wl1271_error("AP mgmt policy change failed %d", ret);
			goto out;
		}
	}
2475

2476 2477 2478
	ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf, changed);
	if (ret < 0)
		goto out;
2479

2480 2481 2482 2483 2484 2485
	if ((changed & BSS_CHANGED_BEACON_ENABLED)) {
		if (bss_conf->enable_beacon) {
			if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
				ret = wl1271_cmd_start_bss(wl);
				if (ret < 0)
					goto out;
2486

2487 2488
				set_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
				wl1271_debug(DEBUG_AP, "started AP");
2489 2490 2491 2492

				ret = wl1271_ap_init_hwenc(wl);
				if (ret < 0)
					goto out;
2493
			}
2494 2495 2496 2497 2498
		} else {
			if (test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
				ret = wl1271_cmd_stop_bss(wl);
				if (ret < 0)
					goto out;
2499

2500 2501 2502 2503 2504
				clear_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
				wl1271_debug(DEBUG_AP, "stopped AP");
			}
		}
	}
2505

2506 2507 2508 2509 2510 2511
	ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
	if (ret < 0)
		goto out;
out:
	return;
}
J
Juuso Oikarinen 已提交
2512

2513 2514 2515 2516 2517 2518 2519 2520
/* STA/IBSS mode changes */
static void wl1271_bss_info_changed_sta(struct wl1271 *wl,
					struct ieee80211_vif *vif,
					struct ieee80211_bss_conf *bss_conf,
					u32 changed)
{
	bool do_join = false, set_assoc = false;
	bool is_ibss = (wl->bss_type == BSS_TYPE_IBSS);
2521
	u32 sta_rate_set = 0;
2522
	int ret;
2523
	struct ieee80211_sta *sta;
2524 2525
	bool sta_exists = false;
	struct ieee80211_sta_ht_cap sta_ht_cap;
2526 2527 2528 2529 2530 2531

	if (is_ibss) {
		ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf,
						     changed);
		if (ret < 0)
			goto out;
2532 2533
	}

2534 2535 2536 2537 2538 2539 2540 2541
	if ((changed & BSS_CHANGED_BEACON_INT)  && is_ibss)
		do_join = true;

	/* Need to update the SSID (for filtering etc) */
	if ((changed & BSS_CHANGED_BEACON) && is_ibss)
		do_join = true;

	if ((changed & BSS_CHANGED_BEACON_ENABLED) && is_ibss) {
2542 2543 2544 2545 2546 2547 2548 2549 2550 2551
		wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
			     bss_conf->enable_beacon ? "enabled" : "disabled");

		if (bss_conf->enable_beacon)
			wl->set_bss_type = BSS_TYPE_IBSS;
		else
			wl->set_bss_type = BSS_TYPE_STA_BSS;
		do_join = true;
	}

2552
	if ((changed & BSS_CHANGED_CQM)) {
2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563
		bool enable = false;
		if (bss_conf->cqm_rssi_thold)
			enable = true;
		ret = wl1271_acx_rssi_snr_trigger(wl, enable,
						  bss_conf->cqm_rssi_thold,
						  bss_conf->cqm_rssi_hyst);
		if (ret < 0)
			goto out;
		wl->rssi_thold = bss_conf->cqm_rssi_thold;
	}

2564 2565 2566 2567 2568 2569
	if ((changed & BSS_CHANGED_BSSID) &&
	    /*
	     * Now we know the correct bssid, so we send a new join command
	     * and enable the BSSID filter
	     */
	    memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
2570
		memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
2571

2572 2573 2574 2575
		if (!is_zero_ether_addr(wl->bssid)) {
			ret = wl1271_cmd_build_null_data(wl);
			if (ret < 0)
				goto out;
2576

2577 2578 2579
			ret = wl1271_build_qos_null_data(wl);
			if (ret < 0)
				goto out;
2580

2581 2582
			/* filter out all packets not from this BSSID */
			wl1271_configure_filters(wl, 0);
2583

2584 2585 2586
			/* Need to update the BSSID (for filtering etc) */
			do_join = true;
		}
2587 2588
	}

2589 2590 2591 2592 2593 2594 2595 2596
	rcu_read_lock();
	sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (sta)  {
		/* save the supp_rates of the ap */
		sta_rate_set = sta->supp_rates[wl->hw->conf.channel->band];
		if (sta->ht_cap.ht_supported)
			sta_rate_set |=
			    (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET);
2597 2598 2599 2600
		sta_ht_cap = sta->ht_cap;
		sta_exists = true;
	}
	rcu_read_unlock();
2601

2602
	if (sta_exists) {
2603 2604 2605
		/* handle new association with HT and HT information change */
		if ((changed & BSS_CHANGED_HT) &&
		    (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
2606
			ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622
							     true);
			if (ret < 0) {
				wl1271_warning("Set ht cap true failed %d",
					       ret);
				goto out;
			}
			ret = wl1271_acx_set_ht_information(wl,
						bss_conf->ht_operation_mode);
			if (ret < 0) {
				wl1271_warning("Set ht information failed %d",
					       ret);
				goto out;
			}
		}
		/* handle new association without HT and disassociation */
		else if (changed & BSS_CHANGED_ASSOC) {
2623
			ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
2624 2625 2626 2627 2628 2629 2630 2631 2632
							     false);
			if (ret < 0) {
				wl1271_warning("Set ht cap false failed %d",
					       ret);
				goto out;
			}
		}
	}

2633
	if ((changed & BSS_CHANGED_ASSOC)) {
L
Luciano Coelho 已提交
2634
		if (bss_conf->assoc) {
2635
			u32 rates;
2636
			int ieoffset;
L
Luciano Coelho 已提交
2637
			wl->aid = bss_conf->aid;
2638
			set_assoc = true;
L
Luciano Coelho 已提交
2639

2640 2641
			wl->ps_poll_failures = 0;

2642 2643 2644 2645 2646 2647 2648
			/*
			 * use basic rates from AP, and determine lowest rate
			 * to use with control frames.
			 */
			rates = bss_conf->basic_rates;
			wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
									 rates);
A
Arik Nemtsov 已提交
2649
			wl->basic_rate = wl1271_tx_min_rate_get(wl);
2650 2651 2652
			if (sta_rate_set)
				wl->rate_set = wl1271_tx_enabled_rates_get(wl,
								sta_rate_set);
2653
			ret = wl1271_acx_sta_rate_policies(wl);
2654
			if (ret < 0)
2655
				goto out;
2656

2657 2658 2659 2660 2661 2662
			/*
			 * with wl1271, we don't need to update the
			 * beacon_int and dtim_period, because the firmware
			 * updates it by itself when the first beacon is
			 * received after a join.
			 */
L
Luciano Coelho 已提交
2663 2664
			ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
			if (ret < 0)
2665
				goto out;
L
Luciano Coelho 已提交
2666

2667
			/*
2668
			 * Get a template for hardware connection maintenance
2669
			 */
2670 2671 2672 2673 2674
			dev_kfree_skb(wl->probereq);
			wl->probereq = wl1271_cmd_build_ap_probe_req(wl, NULL);
			ieoffset = offsetof(struct ieee80211_mgmt,
					    u.probe_req.variable);
			wl1271_ssid_set(wl, wl->probereq, ieoffset);
2675

2676 2677
			/* enable the connection monitoring feature */
			ret = wl1271_acx_conn_monit_params(wl, true);
L
Luciano Coelho 已提交
2678
			if (ret < 0)
2679
				goto out;
L
Luciano Coelho 已提交
2680 2681

			/* If we want to go in PSM but we're not there yet */
2682 2683
			if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
			    !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
2684 2685
				enum wl1271_cmd_ps_mode mode;

L
Luciano Coelho 已提交
2686
				mode = STATION_POWER_SAVE_MODE;
2687
				ret = wl1271_ps_set_mode(wl, mode,
2688
							 wl->basic_rate,
2689
							 true);
L
Luciano Coelho 已提交
2690
				if (ret < 0)
2691
					goto out;
L
Luciano Coelho 已提交
2692
			}
J
Juuso Oikarinen 已提交
2693 2694
		} else {
			/* use defaults when not associated */
2695
			clear_bit(WL1271_FLAG_STA_STATE_SENT, &wl->flags);
2696
			clear_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
J
Juuso Oikarinen 已提交
2697
			wl->aid = 0;
2698

2699 2700 2701 2702
			/* free probe-request template */
			dev_kfree_skb(wl->probereq);
			wl->probereq = NULL;

2703
			/* re-enable dynamic ps - just in case */
2704
			ieee80211_enable_dyn_ps(wl->vif);
2705

2706 2707
			/* revert back to minimum rates for the current band */
			wl1271_set_band_rate(wl);
A
Arik Nemtsov 已提交
2708
			wl->basic_rate = wl1271_tx_min_rate_get(wl);
2709
			ret = wl1271_acx_sta_rate_policies(wl);
2710
			if (ret < 0)
2711
				goto out;
2712

2713 2714
			/* disable connection monitor features */
			ret = wl1271_acx_conn_monit_params(wl, false);
2715 2716 2717

			/* Disable the keep-alive feature */
			ret = wl1271_acx_keep_alive_mode(wl, false);
2718
			if (ret < 0)
2719
				goto out;
2720 2721 2722 2723

			/* restore the bssid filter and go to dummy bssid */
			wl1271_unjoin(wl);
			wl1271_dummy_join(wl);
L
Luciano Coelho 已提交
2724 2725 2726
		}
	}

2727 2728 2729
	ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
	if (ret < 0)
		goto out;
L
Luciano Coelho 已提交
2730

2731 2732 2733 2734
	if (changed & BSS_CHANGED_ARP_FILTER) {
		__be32 addr = bss_conf->arp_addr_list[0];
		WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);

E
Eliad Peller 已提交
2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745
		if (bss_conf->arp_addr_cnt == 1 &&
		    bss_conf->arp_filter_enabled) {
			/*
			 * The template should have been configured only upon
			 * association. however, it seems that the correct ip
			 * isn't being set (when sending), so we have to
			 * reconfigure the template upon every ip change.
			 */
			ret = wl1271_cmd_build_arp_rsp(wl, addr);
			if (ret < 0) {
				wl1271_warning("build arp rsp failed: %d", ret);
2746
				goto out;
E
Eliad Peller 已提交
2747 2748 2749
			}

			ret = wl1271_acx_arp_ip_filter(wl,
E
Eliad Peller 已提交
2750
				ACX_ARP_FILTER_ARP_FILTERING,
E
Eliad Peller 已提交
2751 2752 2753
				addr);
		} else
			ret = wl1271_acx_arp_ip_filter(wl, 0, addr);
2754 2755

		if (ret < 0)
2756
			goto out;
2757 2758
	}

J
Juuso Oikarinen 已提交
2759
	if (do_join) {
2760
		ret = wl1271_join(wl, set_assoc);
J
Juuso Oikarinen 已提交
2761 2762
		if (ret < 0) {
			wl1271_warning("cmd join failed %d", ret);
2763
			goto out;
J
Juuso Oikarinen 已提交
2764
		}
2765 2766
	}

2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787
out:
	return;
}

static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif,
				       struct ieee80211_bss_conf *bss_conf,
				       u32 changed)
{
	struct wl1271 *wl = hw->priv;
	bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
	int ret;

	wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed 0x%x",
		     (int)changed);

	mutex_lock(&wl->mutex);

	if (unlikely(wl->state == WL1271_STATE_OFF))
		goto out;

2788
	ret = wl1271_ps_elp_wakeup(wl);
2789 2790 2791 2792 2793 2794 2795 2796
	if (ret < 0)
		goto out;

	if (is_ap)
		wl1271_bss_info_changed_ap(wl, vif, bss_conf, changed);
	else
		wl1271_bss_info_changed_sta(wl, vif, bss_conf, changed);

L
Luciano Coelho 已提交
2797 2798 2799 2800 2801 2802
	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);
}

K
Kalle Valo 已提交
2803 2804 2805 2806
static int wl1271_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
			     const struct ieee80211_tx_queue_params *params)
{
	struct wl1271 *wl = hw->priv;
K
Kalle Valo 已提交
2807
	u8 ps_scheme;
2808
	int ret = 0;
K
Kalle Valo 已提交
2809 2810 2811 2812 2813

	mutex_lock(&wl->mutex);

	wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);

K
Kalle Valo 已提交
2814 2815 2816 2817 2818
	if (params->uapsd)
		ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
	else
		ps_scheme = CONF_PS_SCHEME_LEGACY;

2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841
	if (wl->state == WL1271_STATE_OFF) {
		/*
		 * If the state is off, the parameters will be recorded and
		 * configured on init. This happens in AP-mode.
		 */
		struct conf_tx_ac_category *conf_ac =
			&wl->conf.tx.ac_conf[wl1271_tx_get_queue(queue)];
		struct conf_tx_tid *conf_tid =
			&wl->conf.tx.tid_conf[wl1271_tx_get_queue(queue)];

		conf_ac->ac = wl1271_tx_get_queue(queue);
		conf_ac->cw_min = (u8)params->cw_min;
		conf_ac->cw_max = params->cw_max;
		conf_ac->aifsn = params->aifs;
		conf_ac->tx_op_limit = params->txop << 5;

		conf_tid->queue_id = wl1271_tx_get_queue(queue);
		conf_tid->channel_type = CONF_CHANNEL_TYPE_EDCF;
		conf_tid->tsid = wl1271_tx_get_queue(queue);
		conf_tid->ps_scheme = ps_scheme;
		conf_tid->ack_policy = CONF_ACK_POLICY_LEGACY;
		conf_tid->apsd_conf[0] = 0;
		conf_tid->apsd_conf[1] = 0;
2842 2843
		goto out;
	}
2844

2845 2846 2847
	ret = wl1271_ps_elp_wakeup(wl);
	if (ret < 0)
		goto out;
2848

2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863
	/*
	 * the txop is confed in units of 32us by the mac80211,
	 * we need us
	 */
	ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
				params->cw_min, params->cw_max,
				params->aifs, params->txop << 5);
	if (ret < 0)
		goto out_sleep;

	ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
				 CONF_CHANNEL_TYPE_EDCF,
				 wl1271_tx_get_queue(queue),
				 ps_scheme, CONF_ACK_POLICY_LEGACY,
				 0, 0);
K
Kalle Valo 已提交
2864 2865

out_sleep:
2866
	wl1271_ps_elp_sleep(wl);
K
Kalle Valo 已提交
2867 2868 2869 2870 2871 2872 2873

out:
	mutex_unlock(&wl->mutex);

	return ret;
}

J
Juuso Oikarinen 已提交
2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884
static u64 wl1271_op_get_tsf(struct ieee80211_hw *hw)
{

	struct wl1271 *wl = hw->priv;
	u64 mactime = ULLONG_MAX;
	int ret;

	wl1271_debug(DEBUG_MAC80211, "mac80211 get tsf");

	mutex_lock(&wl->mutex);

2885 2886 2887
	if (unlikely(wl->state == WL1271_STATE_OFF))
		goto out;

2888
	ret = wl1271_ps_elp_wakeup(wl);
J
Juuso Oikarinen 已提交
2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902
	if (ret < 0)
		goto out;

	ret = wl1271_acx_tsf_info(wl, &mactime);
	if (ret < 0)
		goto out_sleep;

out_sleep:
	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);
	return mactime;
}
L
Luciano Coelho 已提交
2903

2904 2905 2906 2907 2908
static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
				struct survey_info *survey)
{
	struct wl1271 *wl = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
2909

2910 2911
	if (idx != 0)
		return -ENOENT;
2912

2913 2914 2915
	survey->channel = conf->channel;
	survey->filled = SURVEY_INFO_NOISE_DBM;
	survey->noise = wl->noise;
2916

2917 2918 2919
	return 0;
}

2920
static int wl1271_allocate_sta(struct wl1271 *wl,
2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936
			     struct ieee80211_sta *sta,
			     u8 *hlid)
{
	struct wl1271_station *wl_sta;
	int id;

	id = find_first_zero_bit(wl->ap_hlid_map, AP_MAX_STATIONS);
	if (id >= AP_MAX_STATIONS) {
		wl1271_warning("could not allocate HLID - too much stations");
		return -EBUSY;
	}

	wl_sta = (struct wl1271_station *)sta->drv_priv;
	__set_bit(id, wl->ap_hlid_map);
	wl_sta->hlid = WL1271_AP_STA_HLID_START + id;
	*hlid = wl_sta->hlid;
2937
	memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
2938 2939 2940
	return 0;
}

2941
static void wl1271_free_sta(struct wl1271 *wl, u8 hlid)
2942 2943 2944
{
	int id = hlid - WL1271_AP_STA_HLID_START;

2945 2946 2947
	if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
		return;

2948
	__clear_bit(id, wl->ap_hlid_map);
2949
	memset(wl->links[hlid].addr, 0, ETH_ALEN);
2950
	wl1271_tx_reset_link_queues(wl, hlid);
2951 2952
	__clear_bit(hlid, &wl->ap_ps_map);
	__clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972
}

static int wl1271_op_sta_add(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     struct ieee80211_sta *sta)
{
	struct wl1271 *wl = hw->priv;
	int ret = 0;
	u8 hlid;

	mutex_lock(&wl->mutex);

	if (unlikely(wl->state == WL1271_STATE_OFF))
		goto out;

	if (wl->bss_type != BSS_TYPE_AP_BSS)
		goto out;

	wl1271_debug(DEBUG_MAC80211, "mac80211 add sta %d", (int)sta->aid);

2973
	ret = wl1271_allocate_sta(wl, sta, &hlid);
2974 2975 2976
	if (ret < 0)
		goto out;

2977
	ret = wl1271_ps_elp_wakeup(wl);
2978
	if (ret < 0)
2979
		goto out_free_sta;
2980 2981 2982 2983 2984 2985 2986 2987

	ret = wl1271_cmd_add_sta(wl, sta, hlid);
	if (ret < 0)
		goto out_sleep;

out_sleep:
	wl1271_ps_elp_sleep(wl);

2988 2989 2990 2991
out_free_sta:
	if (ret < 0)
		wl1271_free_sta(wl, hlid);

2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019
out:
	mutex_unlock(&wl->mutex);
	return ret;
}

static int wl1271_op_sta_remove(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta)
{
	struct wl1271 *wl = hw->priv;
	struct wl1271_station *wl_sta;
	int ret = 0, id;

	mutex_lock(&wl->mutex);

	if (unlikely(wl->state == WL1271_STATE_OFF))
		goto out;

	if (wl->bss_type != BSS_TYPE_AP_BSS)
		goto out;

	wl1271_debug(DEBUG_MAC80211, "mac80211 remove sta %d", (int)sta->aid);

	wl_sta = (struct wl1271_station *)sta->drv_priv;
	id = wl_sta->hlid - WL1271_AP_STA_HLID_START;
	if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
		goto out;

3020
	ret = wl1271_ps_elp_wakeup(wl);
3021 3022 3023 3024 3025 3026 3027
	if (ret < 0)
		goto out;

	ret = wl1271_cmd_remove_sta(wl, wl_sta->hlid);
	if (ret < 0)
		goto out_sleep;

3028
	wl1271_free_sta(wl, wl_sta->hlid);
3029 3030 3031 3032 3033 3034 3035 3036 3037

out_sleep:
	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);
	return ret;
}

3038 3039 3040 3041 3042
static int wl1271_op_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)
L
Levi, Shahar 已提交
3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053
{
	struct wl1271 *wl = hw->priv;
	int ret;

	mutex_lock(&wl->mutex);

	if (unlikely(wl->state == WL1271_STATE_OFF)) {
		ret = -EAGAIN;
		goto out;
	}

3054
	ret = wl1271_ps_elp_wakeup(wl);
L
Levi, Shahar 已提交
3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098
	if (ret < 0)
		goto out;

	switch (action) {
	case IEEE80211_AMPDU_RX_START:
		if (wl->ba_support) {
			ret = wl1271_acx_set_ba_receiver_session(wl, tid, *ssn,
								 true);
			if (!ret)
				wl->ba_rx_bitmap |= BIT(tid);
		} else {
			ret = -ENOTSUPP;
		}
		break;

	case IEEE80211_AMPDU_RX_STOP:
		ret = wl1271_acx_set_ba_receiver_session(wl, tid, 0, false);
		if (!ret)
			wl->ba_rx_bitmap &= ~BIT(tid);
		break;

	/*
	 * The BA initiator session management in FW independently.
	 * Falling break here on purpose for all TX APDU commands.
	 */
	case IEEE80211_AMPDU_TX_START:
	case IEEE80211_AMPDU_TX_STOP:
	case IEEE80211_AMPDU_TX_OPERATIONAL:
		ret = -EINVAL;
		break;

	default:
		wl1271_error("Incorrect ampdu action id=%x\n", action);
		ret = -EINVAL;
	}

	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);

	return ret;
}

L
Luciano Coelho 已提交
3099 3100 3101
/* can't be const, mac80211 writes to this */
static struct ieee80211_rate wl1271_rates[] = {
	{ .bitrate = 10,
3102 3103
	  .hw_value = CONF_HW_BIT_RATE_1MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
L
Luciano Coelho 已提交
3104
	{ .bitrate = 20,
3105 3106
	  .hw_value = CONF_HW_BIT_RATE_2MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
L
Luciano Coelho 已提交
3107 3108
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 55,
3109 3110
	  .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
L
Luciano Coelho 已提交
3111 3112
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 110,
3113 3114
	  .hw_value = CONF_HW_BIT_RATE_11MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
L
Luciano Coelho 已提交
3115 3116
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 60,
3117 3118
	  .hw_value = CONF_HW_BIT_RATE_6MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
L
Luciano Coelho 已提交
3119
	{ .bitrate = 90,
3120 3121
	  .hw_value = CONF_HW_BIT_RATE_9MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
L
Luciano Coelho 已提交
3122
	{ .bitrate = 120,
3123 3124
	  .hw_value = CONF_HW_BIT_RATE_12MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
L
Luciano Coelho 已提交
3125
	{ .bitrate = 180,
3126 3127
	  .hw_value = CONF_HW_BIT_RATE_18MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
L
Luciano Coelho 已提交
3128
	{ .bitrate = 240,
3129 3130
	  .hw_value = CONF_HW_BIT_RATE_24MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
L
Luciano Coelho 已提交
3131
	{ .bitrate = 360,
3132 3133
	 .hw_value = CONF_HW_BIT_RATE_36MBPS,
	 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
L
Luciano Coelho 已提交
3134
	{ .bitrate = 480,
3135 3136
	  .hw_value = CONF_HW_BIT_RATE_48MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
L
Luciano Coelho 已提交
3137
	{ .bitrate = 540,
3138 3139
	  .hw_value = CONF_HW_BIT_RATE_54MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
L
Luciano Coelho 已提交
3140 3141
};

3142
/* can't be const, mac80211 writes to this */
L
Luciano Coelho 已提交
3143
static struct ieee80211_channel wl1271_channels[] = {
3144
	{ .hw_value = 1, .center_freq = 2412, .max_power = 25 },
3145
	{ .hw_value = 2, .center_freq = 2417, .max_power = 25 },
3146 3147 3148
	{ .hw_value = 3, .center_freq = 2422, .max_power = 25 },
	{ .hw_value = 4, .center_freq = 2427, .max_power = 25 },
	{ .hw_value = 5, .center_freq = 2432, .max_power = 25 },
3149
	{ .hw_value = 6, .center_freq = 2437, .max_power = 25 },
3150 3151 3152
	{ .hw_value = 7, .center_freq = 2442, .max_power = 25 },
	{ .hw_value = 8, .center_freq = 2447, .max_power = 25 },
	{ .hw_value = 9, .center_freq = 2452, .max_power = 25 },
3153
	{ .hw_value = 10, .center_freq = 2457, .max_power = 25 },
3154 3155 3156
	{ .hw_value = 11, .center_freq = 2462, .max_power = 25 },
	{ .hw_value = 12, .center_freq = 2467, .max_power = 25 },
	{ .hw_value = 13, .center_freq = 2472, .max_power = 25 },
3157
	{ .hw_value = 14, .center_freq = 2484, .max_power = 25 },
L
Luciano Coelho 已提交
3158 3159
};

3160
/* mapping to indexes for wl1271_rates */
3161
static const u8 wl1271_rate_to_idx_2ghz[] = {
3162
	/* MCS rates are used only with 11n */
3163 3164 3165 3166 3167 3168 3169 3170
	7,                            /* CONF_HW_RXTX_RATE_MCS7 */
	6,                            /* CONF_HW_RXTX_RATE_MCS6 */
	5,                            /* CONF_HW_RXTX_RATE_MCS5 */
	4,                            /* CONF_HW_RXTX_RATE_MCS4 */
	3,                            /* CONF_HW_RXTX_RATE_MCS3 */
	2,                            /* CONF_HW_RXTX_RATE_MCS2 */
	1,                            /* CONF_HW_RXTX_RATE_MCS1 */
	0,                            /* CONF_HW_RXTX_RATE_MCS0 */
3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189

	11,                            /* CONF_HW_RXTX_RATE_54   */
	10,                            /* CONF_HW_RXTX_RATE_48   */
	9,                             /* CONF_HW_RXTX_RATE_36   */
	8,                             /* CONF_HW_RXTX_RATE_24   */

	/* TI-specific rate */
	CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22   */

	7,                             /* CONF_HW_RXTX_RATE_18   */
	6,                             /* CONF_HW_RXTX_RATE_12   */
	3,                             /* CONF_HW_RXTX_RATE_11   */
	5,                             /* CONF_HW_RXTX_RATE_9    */
	4,                             /* CONF_HW_RXTX_RATE_6    */
	2,                             /* CONF_HW_RXTX_RATE_5_5  */
	1,                             /* CONF_HW_RXTX_RATE_2    */
	0                              /* CONF_HW_RXTX_RATE_1    */
};

S
Shahar Levi 已提交
3190 3191 3192
/* 11n STA capabilities */
#define HW_RX_HIGHEST_RATE	72

S
Shahar Levi 已提交
3193 3194
#ifdef CONFIG_WL12XX_HT
#define WL12XX_HT_CAP { \
3195 3196
	.cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | \
	       (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT), \
S
Shahar Levi 已提交
3197 3198 3199 3200 3201 3202 3203 3204 3205
	.ht_supported = true, \
	.ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K, \
	.ampdu_density = IEEE80211_HT_MPDU_DENSITY_8, \
	.mcs = { \
		.rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, \
		.rx_highest = cpu_to_le16(HW_RX_HIGHEST_RATE), \
		.tx_params = IEEE80211_HT_MCS_TX_DEFINED, \
		}, \
}
3206
#else
S
Shahar Levi 已提交
3207
#define WL12XX_HT_CAP { \
3208 3209 3210
	.ht_supported = false, \
}
#endif
S
Shahar Levi 已提交
3211

L
Luciano Coelho 已提交
3212 3213 3214 3215 3216 3217
/* can't be const, mac80211 writes to this */
static struct ieee80211_supported_band wl1271_band_2ghz = {
	.channels = wl1271_channels,
	.n_channels = ARRAY_SIZE(wl1271_channels),
	.bitrates = wl1271_rates,
	.n_bitrates = ARRAY_SIZE(wl1271_rates),
S
Shahar Levi 已提交
3218
	.ht_cap	= WL12XX_HT_CAP,
L
Luciano Coelho 已提交
3219 3220
};

3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248
/* 5 GHz data rates for WL1273 */
static struct ieee80211_rate wl1271_rates_5ghz[] = {
	{ .bitrate = 60,
	  .hw_value = CONF_HW_BIT_RATE_6MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
	{ .bitrate = 90,
	  .hw_value = CONF_HW_BIT_RATE_9MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
	{ .bitrate = 120,
	  .hw_value = CONF_HW_BIT_RATE_12MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
	{ .bitrate = 180,
	  .hw_value = CONF_HW_BIT_RATE_18MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
	{ .bitrate = 240,
	  .hw_value = CONF_HW_BIT_RATE_24MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
	{ .bitrate = 360,
	 .hw_value = CONF_HW_BIT_RATE_36MBPS,
	 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
	{ .bitrate = 480,
	  .hw_value = CONF_HW_BIT_RATE_48MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
	{ .bitrate = 540,
	  .hw_value = CONF_HW_BIT_RATE_54MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
};

3249
/* 5 GHz band channels for WL1273 */
3250
static struct ieee80211_channel wl1271_channels_5ghz[] = {
3251
	{ .hw_value = 7, .center_freq = 5035},
3252 3253 3254 3255
	{ .hw_value = 8, .center_freq = 5040},
	{ .hw_value = 9, .center_freq = 5045},
	{ .hw_value = 11, .center_freq = 5055},
	{ .hw_value = 12, .center_freq = 5060},
3256
	{ .hw_value = 16, .center_freq = 5080},
3257 3258 3259 3260
	{ .hw_value = 34, .center_freq = 5170},
	{ .hw_value = 36, .center_freq = 5180},
	{ .hw_value = 38, .center_freq = 5190},
	{ .hw_value = 40, .center_freq = 5200},
3261
	{ .hw_value = 42, .center_freq = 5210},
3262 3263 3264 3265
	{ .hw_value = 44, .center_freq = 5220},
	{ .hw_value = 46, .center_freq = 5230},
	{ .hw_value = 48, .center_freq = 5240},
	{ .hw_value = 52, .center_freq = 5260},
3266
	{ .hw_value = 56, .center_freq = 5280},
3267 3268 3269 3270
	{ .hw_value = 60, .center_freq = 5300},
	{ .hw_value = 64, .center_freq = 5320},
	{ .hw_value = 100, .center_freq = 5500},
	{ .hw_value = 104, .center_freq = 5520},
3271
	{ .hw_value = 108, .center_freq = 5540},
3272 3273 3274 3275
	{ .hw_value = 112, .center_freq = 5560},
	{ .hw_value = 116, .center_freq = 5580},
	{ .hw_value = 120, .center_freq = 5600},
	{ .hw_value = 124, .center_freq = 5620},
3276
	{ .hw_value = 128, .center_freq = 5640},
3277 3278 3279 3280
	{ .hw_value = 132, .center_freq = 5660},
	{ .hw_value = 136, .center_freq = 5680},
	{ .hw_value = 140, .center_freq = 5700},
	{ .hw_value = 149, .center_freq = 5745},
3281
	{ .hw_value = 153, .center_freq = 5765},
3282 3283
	{ .hw_value = 157, .center_freq = 5785},
	{ .hw_value = 161, .center_freq = 5805},
3284 3285 3286
	{ .hw_value = 165, .center_freq = 5825},
};

3287
/* mapping to indexes for wl1271_rates_5ghz */
3288
static const u8 wl1271_rate_to_idx_5ghz[] = {
3289
	/* MCS rates are used only with 11n */
3290 3291 3292 3293 3294 3295 3296 3297
	7,                            /* CONF_HW_RXTX_RATE_MCS7 */
	6,                            /* CONF_HW_RXTX_RATE_MCS6 */
	5,                            /* CONF_HW_RXTX_RATE_MCS5 */
	4,                            /* CONF_HW_RXTX_RATE_MCS4 */
	3,                            /* CONF_HW_RXTX_RATE_MCS3 */
	2,                            /* CONF_HW_RXTX_RATE_MCS2 */
	1,                            /* CONF_HW_RXTX_RATE_MCS1 */
	0,                            /* CONF_HW_RXTX_RATE_MCS0 */
3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315

	7,                             /* CONF_HW_RXTX_RATE_54   */
	6,                             /* CONF_HW_RXTX_RATE_48   */
	5,                             /* CONF_HW_RXTX_RATE_36   */
	4,                             /* CONF_HW_RXTX_RATE_24   */

	/* TI-specific rate */
	CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22   */

	3,                             /* CONF_HW_RXTX_RATE_18   */
	2,                             /* CONF_HW_RXTX_RATE_12   */
	CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_11   */
	1,                             /* CONF_HW_RXTX_RATE_9    */
	0,                             /* CONF_HW_RXTX_RATE_6    */
	CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_5_5  */
	CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_2    */
	CONF_HW_RXTX_RATE_UNSUPPORTED  /* CONF_HW_RXTX_RATE_1    */
};
3316 3317 3318 3319 3320 3321

static struct ieee80211_supported_band wl1271_band_5ghz = {
	.channels = wl1271_channels_5ghz,
	.n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
	.bitrates = wl1271_rates_5ghz,
	.n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
S
Shahar Levi 已提交
3322
	.ht_cap	= WL12XX_HT_CAP,
3323 3324
};

3325
static const u8 *wl1271_band_rate_to_idx[] = {
3326 3327 3328 3329
	[IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
	[IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
};

L
Luciano Coelho 已提交
3330 3331 3332 3333 3334 3335
static const struct ieee80211_ops wl1271_ops = {
	.start = wl1271_op_start,
	.stop = wl1271_op_stop,
	.add_interface = wl1271_op_add_interface,
	.remove_interface = wl1271_op_remove_interface,
	.config = wl1271_op_config,
3336
	.prepare_multicast = wl1271_op_prepare_multicast,
L
Luciano Coelho 已提交
3337 3338 3339 3340 3341
	.configure_filter = wl1271_op_configure_filter,
	.tx = wl1271_op_tx,
	.set_key = wl1271_op_set_key,
	.hw_scan = wl1271_op_hw_scan,
	.bss_info_changed = wl1271_op_bss_info_changed,
3342
	.set_frag_threshold = wl1271_op_set_frag_threshold,
L
Luciano Coelho 已提交
3343
	.set_rts_threshold = wl1271_op_set_rts_threshold,
K
Kalle Valo 已提交
3344
	.conf_tx = wl1271_op_conf_tx,
J
Juuso Oikarinen 已提交
3345
	.get_tsf = wl1271_op_get_tsf,
3346
	.get_survey = wl1271_op_get_survey,
3347 3348
	.sta_add = wl1271_op_sta_add,
	.sta_remove = wl1271_op_sta_remove,
L
Levi, Shahar 已提交
3349
	.ampdu_action = wl1271_op_ampdu_action,
K
Kalle Valo 已提交
3350
	CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
L
Luciano Coelho 已提交
3351 3352
};

3353

3354
u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band)
3355 3356 3357
{
	u8 idx;

3358
	BUG_ON(band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
3359 3360 3361 3362 3363 3364

	if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
		wl1271_error("Illegal RX rate from HW: %d", rate);
		return 0;
	}

3365
	idx = wl1271_band_rate_to_idx[band][rate];
3366 3367 3368 3369 3370 3371 3372 3373
	if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
		wl1271_error("Unsupported RX rate from HW: %d", rate);
		return 0;
	}

	return idx;
}

3374 3375 3376 3377 3378 3379 3380
static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
					       struct device_attribute *attr,
					       char *buf)
{
	struct wl1271 *wl = dev_get_drvdata(dev);
	ssize_t len;

3381
	len = PAGE_SIZE;
3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399

	mutex_lock(&wl->mutex);
	len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
		       wl->sg_enabled);
	mutex_unlock(&wl->mutex);

	return len;

}

static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
						struct device_attribute *attr,
						const char *buf, size_t count)
{
	struct wl1271 *wl = dev_get_drvdata(dev);
	unsigned long res;
	int ret;

L
Luciano Coelho 已提交
3400
	ret = kstrtoul(buf, 10, &res);
3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417
	if (ret < 0) {
		wl1271_warning("incorrect value written to bt_coex_mode");
		return count;
	}

	mutex_lock(&wl->mutex);

	res = !!res;

	if (res == wl->sg_enabled)
		goto out;

	wl->sg_enabled = res;

	if (wl->state == WL1271_STATE_OFF)
		goto out;

3418
	ret = wl1271_ps_elp_wakeup(wl);
3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433
	if (ret < 0)
		goto out;

	wl1271_acx_sg_enable(wl, wl->sg_enabled);
	wl1271_ps_elp_sleep(wl);

 out:
	mutex_unlock(&wl->mutex);
	return count;
}

static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
		   wl1271_sysfs_show_bt_coex_state,
		   wl1271_sysfs_store_bt_coex_state);

3434 3435 3436 3437 3438 3439 3440
static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
					   struct device_attribute *attr,
					   char *buf)
{
	struct wl1271 *wl = dev_get_drvdata(dev);
	ssize_t len;

3441
	len = PAGE_SIZE;
3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455

	mutex_lock(&wl->mutex);
	if (wl->hw_pg_ver >= 0)
		len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
	else
		len = snprintf(buf, len, "n/a\n");
	mutex_unlock(&wl->mutex);

	return len;
}

static DEVICE_ATTR(hw_pg_ver, S_IRUGO | S_IWUSR,
		   wl1271_sysfs_show_hw_pg_ver, NULL);

3456
int wl1271_register_hw(struct wl1271 *wl)
L
Luciano Coelho 已提交
3457 3458 3459 3460 3461 3462
{
	int ret;

	if (wl->mac80211_registered)
		return 0;

3463 3464
	ret = wl1271_fetch_nvs(wl);
	if (ret == 0) {
3465 3466 3467 3468 3469
		/* NOTE: The wl->nvs->nvs element must be first, in
		 * order to simplify the casting, we assume it is at
		 * the beginning of the wl->nvs structure.
		 */
		u8 *nvs_ptr = (u8 *)wl->nvs;
3470 3471 3472 3473 3474 3475 3476 3477 3478

		wl->mac_addr[0] = nvs_ptr[11];
		wl->mac_addr[1] = nvs_ptr[10];
		wl->mac_addr[2] = nvs_ptr[6];
		wl->mac_addr[3] = nvs_ptr[5];
		wl->mac_addr[4] = nvs_ptr[4];
		wl->mac_addr[5] = nvs_ptr[3];
	}

L
Luciano Coelho 已提交
3479 3480 3481 3482 3483 3484 3485 3486 3487 3488
	SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);

	ret = ieee80211_register_hw(wl->hw);
	if (ret < 0) {
		wl1271_error("unable to register mac80211 hw: %d", ret);
		return ret;
	}

	wl->mac80211_registered = true;

3489 3490
	wl1271_debugfs_init(wl);

3491 3492
	register_netdevice_notifier(&wl1271_dev_notifier);

L
Luciano Coelho 已提交
3493 3494 3495 3496
	wl1271_notice("loaded");

	return 0;
}
3497
EXPORT_SYMBOL_GPL(wl1271_register_hw);
L
Luciano Coelho 已提交
3498

3499 3500
void wl1271_unregister_hw(struct wl1271 *wl)
{
3501 3502 3503
	if (wl->state == WL1271_STATE_PLT)
		__wl1271_plt_stop(wl);

3504
	unregister_netdevice_notifier(&wl1271_dev_notifier);
3505 3506 3507 3508 3509 3510
	ieee80211_unregister_hw(wl->hw);
	wl->mac80211_registered = false;

}
EXPORT_SYMBOL_GPL(wl1271_unregister_hw);

3511
int wl1271_init_ieee80211(struct wl1271 *wl)
L
Luciano Coelho 已提交
3512
{
3513 3514 3515 3516 3517 3518 3519 3520
	static const u32 cipher_suites[] = {
		WLAN_CIPHER_SUITE_WEP40,
		WLAN_CIPHER_SUITE_WEP104,
		WLAN_CIPHER_SUITE_TKIP,
		WLAN_CIPHER_SUITE_CCMP,
		WL1271_CIPHER_SUITE_GEM,
	};

3521 3522 3523
	/* The tx descriptor buffer and the TKIP space. */
	wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
		sizeof(struct wl1271_tx_hw_descr);
L
Luciano Coelho 已提交
3524 3525 3526 3527

	/* unit us */
	/* FIXME: find a proper value */
	wl->hw->channel_change_time = 10000;
3528
	wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
L
Luciano Coelho 已提交
3529 3530

	wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
3531
		IEEE80211_HW_BEACON_FILTER |
3532
		IEEE80211_HW_SUPPORTS_PS |
K
Kalle Valo 已提交
3533
		IEEE80211_HW_SUPPORTS_UAPSD |
3534
		IEEE80211_HW_HAS_RATE_CONTROL |
3535
		IEEE80211_HW_CONNECTION_MONITOR |
3536
		IEEE80211_HW_SUPPORTS_CQM_RSSI |
3537 3538
		IEEE80211_HW_REPORTS_TX_ACK_STATUS |
		IEEE80211_HW_AP_LINK_PS;
L
Luciano Coelho 已提交
3539

3540 3541 3542
	wl->hw->wiphy->cipher_suites = cipher_suites;
	wl->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);

3543
	wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
A
Arik Nemtsov 已提交
3544
		BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
L
Luciano Coelho 已提交
3545
	wl->hw->wiphy->max_scan_ssids = 1;
3546 3547 3548 3549 3550 3551 3552
	/*
	 * Maximum length of elements in scanning probe request templates
	 * should be the maximum length possible for a template, without
	 * the IEEE80211 header of the template
	 */
	wl->hw->wiphy->max_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
			sizeof(struct ieee80211_header);
3553

3554 3555 3556 3557
	/* make sure all our channels fit in the scanned_ch bitmask */
	BUILD_BUG_ON(ARRAY_SIZE(wl1271_channels) +
		     ARRAY_SIZE(wl1271_channels_5ghz) >
		     WL1271_MAX_CHANNELS);
3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570
	/*
	 * We keep local copies of the band structs because we need to
	 * modify them on a per-device basis.
	 */
	memcpy(&wl->bands[IEEE80211_BAND_2GHZ], &wl1271_band_2ghz,
	       sizeof(wl1271_band_2ghz));
	memcpy(&wl->bands[IEEE80211_BAND_5GHZ], &wl1271_band_5ghz,
	       sizeof(wl1271_band_5ghz));

	wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
		&wl->bands[IEEE80211_BAND_2GHZ];
	wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
		&wl->bands[IEEE80211_BAND_5GHZ];
3571

K
Kalle Valo 已提交
3572
	wl->hw->queues = 4;
J
Juuso Oikarinen 已提交
3573
	wl->hw->max_rates = 1;
K
Kalle Valo 已提交
3574

3575 3576
	wl->hw->wiphy->reg_notifier = wl1271_reg_notify;

3577
	SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
L
Luciano Coelho 已提交
3578

3579 3580
	wl->hw->sta_data_size = sizeof(struct wl1271_station);

3581 3582
	wl->hw->max_rx_aggregation_subframes = 8;

L
Luciano Coelho 已提交
3583 3584
	return 0;
}
3585
EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
L
Luciano Coelho 已提交
3586 3587

#define WL1271_DEFAULT_CHANNEL 0
3588

3589
struct ieee80211_hw *wl1271_alloc_hw(void)
L
Luciano Coelho 已提交
3590 3591
{
	struct ieee80211_hw *hw;
3592
	struct platform_device *plat_dev = NULL;
L
Luciano Coelho 已提交
3593
	struct wl1271 *wl;
3594
	int i, j, ret;
3595
	unsigned int order;
L
Luciano Coelho 已提交
3596 3597 3598 3599

	hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
	if (!hw) {
		wl1271_error("could not alloc ieee80211_hw");
3600
		ret = -ENOMEM;
3601 3602 3603
		goto err_hw_alloc;
	}

3604
	plat_dev = kmemdup(&wl1271_device, sizeof(wl1271_device), GFP_KERNEL);
3605 3606 3607 3608
	if (!plat_dev) {
		wl1271_error("could not allocate platform_device");
		ret = -ENOMEM;
		goto err_plat_alloc;
L
Luciano Coelho 已提交
3609 3610 3611 3612 3613
	}

	wl = hw->priv;
	memset(wl, 0, sizeof(*wl));

3614 3615
	INIT_LIST_HEAD(&wl->list);

L
Luciano Coelho 已提交
3616
	wl->hw = hw;
3617
	wl->plat_dev = plat_dev;
L
Luciano Coelho 已提交
3618

3619 3620
	for (i = 0; i < NUM_TX_QUEUES; i++)
		skb_queue_head_init(&wl->tx_queue[i]);
L
Luciano Coelho 已提交
3621

3622 3623 3624 3625
	for (i = 0; i < NUM_TX_QUEUES; i++)
		for (j = 0; j < AP_MAX_LINKS; j++)
			skb_queue_head_init(&wl->links[j].tx_queue[i]);

3626 3627 3628
	skb_queue_head_init(&wl->deferred_rx_queue);
	skb_queue_head_init(&wl->deferred_tx_queue);

3629
	INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
3630
	INIT_DELAYED_WORK(&wl->pspoll_work, wl1271_pspoll_work);
3631
	INIT_WORK(&wl->netstack_work, wl1271_netstack_work);
3632 3633 3634
	INIT_WORK(&wl->tx_work, wl1271_tx_work);
	INIT_WORK(&wl->recovery_work, wl1271_recovery_work);
	INIT_DELAYED_WORK(&wl->scan_complete_work, wl1271_scan_complete_work);
L
Luciano Coelho 已提交
3635
	wl->channel = WL1271_DEFAULT_CHANNEL;
3636
	wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
L
Luciano Coelho 已提交
3637 3638
	wl->default_key = 0;
	wl->rx_counter = 0;
3639 3640
	wl->rx_config = WL1271_DEFAULT_STA_RX_CONFIG;
	wl->rx_filter = WL1271_DEFAULT_STA_RX_FILTER;
3641
	wl->psm_entry_retry = 0;
L
Luciano Coelho 已提交
3642
	wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
3643
	wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
3644
	wl->basic_rate = CONF_TX_RATE_MASK_BASIC;
3645
	wl->rate_set = CONF_TX_RATE_MASK_BASIC;
3646
	wl->band = IEEE80211_BAND_2GHZ;
3647
	wl->vif = NULL;
3648
	wl->flags = 0;
3649
	wl->sg_enabled = true;
3650
	wl->hw_pg_ver = -1;
3651 3652 3653
	wl->bss_type = MAX_BSS_TYPE;
	wl->set_bss_type = MAX_BSS_TYPE;
	wl->fw_bss_type = MAX_BSS_TYPE;
3654
	wl->last_tx_hlid = 0;
3655 3656
	wl->ap_ps_map = 0;
	wl->ap_fw_ps_map = 0;
3657
	wl->quirks = 0;
3658
	wl->platform_quirks = 0;
L
Luciano Coelho 已提交
3659

3660
	memset(wl->tx_frames_map, 0, sizeof(wl->tx_frames_map));
J
Juuso Oikarinen 已提交
3661
	for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
L
Luciano Coelho 已提交
3662 3663 3664 3665 3666 3667 3668
		wl->tx_frames[i] = NULL;

	spin_lock_init(&wl->wl_lock);

	wl->state = WL1271_STATE_OFF;
	mutex_init(&wl->mutex);

3669 3670 3671
	/* Apply default driver configuration. */
	wl1271_conf_init(wl);

3672 3673 3674 3675 3676 3677 3678
	order = get_order(WL1271_AGGR_BUFFER_SIZE);
	wl->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order);
	if (!wl->aggr_buf) {
		ret = -ENOMEM;
		goto err_hw;
	}

3679 3680 3681 3682 3683 3684
	wl->dummy_packet = wl12xx_alloc_dummy_packet(wl);
	if (!wl->dummy_packet) {
		ret = -ENOMEM;
		goto err_aggr;
	}

3685
	/* Register platform device */
3686
	ret = platform_device_register(wl->plat_dev);
3687 3688
	if (ret) {
		wl1271_error("couldn't register platform device");
3689
		goto err_dummy_packet;
3690
	}
3691
	dev_set_drvdata(&wl->plat_dev->dev, wl);
3692

3693
	/* Create sysfs file to control bt coex state */
3694
	ret = device_create_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
3695 3696 3697 3698
	if (ret < 0) {
		wl1271_error("failed to create sysfs file bt_coex_state");
		goto err_platform;
	}
3699

3700 3701 3702 3703 3704 3705 3706
	/* Create sysfs file to get HW PG version */
	ret = device_create_file(&wl->plat_dev->dev, &dev_attr_hw_pg_ver);
	if (ret < 0) {
		wl1271_error("failed to create sysfs file hw_pg_ver");
		goto err_bt_coex_state;
	}

3707
	return hw;
3708

3709 3710 3711
err_bt_coex_state:
	device_remove_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);

3712
err_platform:
3713
	platform_device_unregister(wl->plat_dev);
3714

3715 3716 3717
err_dummy_packet:
	dev_kfree_skb(wl->dummy_packet);

3718 3719 3720
err_aggr:
	free_pages((unsigned long)wl->aggr_buf, order);

3721
err_hw:
3722 3723 3724 3725 3726 3727 3728
	wl1271_debugfs_exit(wl);
	kfree(plat_dev);

err_plat_alloc:
	ieee80211_free_hw(hw);

err_hw_alloc:
3729 3730

	return ERR_PTR(ret);
3731
}
3732
EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
3733 3734 3735

int wl1271_free_hw(struct wl1271 *wl)
{
3736
	platform_device_unregister(wl->plat_dev);
3737
	dev_kfree_skb(wl->dummy_packet);
3738 3739
	free_pages((unsigned long)wl->aggr_buf,
			get_order(WL1271_AGGR_BUFFER_SIZE));
3740
	kfree(wl->plat_dev);
3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755

	wl1271_debugfs_exit(wl);

	vfree(wl->fw);
	wl->fw = NULL;
	kfree(wl->nvs);
	wl->nvs = NULL;

	kfree(wl->fw_status);
	kfree(wl->tx_res_if);

	ieee80211_free_hw(wl->hw);

	return 0;
}
3756 3757
EXPORT_SYMBOL_GPL(wl1271_free_hw);

3758
u32 wl12xx_debug_level = DEBUG_NONE;
3759
EXPORT_SYMBOL_GPL(wl12xx_debug_level);
3760
module_param_named(debug_level, wl12xx_debug_level, uint, S_IRUSR | S_IWUSR);
3761 3762
MODULE_PARM_DESC(debug_level, "wl12xx debugging level");

3763
MODULE_LICENSE("GPL");
3764
MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
3765
MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");