main.c 107.4 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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		.sta_params = {
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			[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,
		},
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		.ap_params = {
			[CONF_SG_BT_PER_THRESHOLD]                  = 7500,
			[CONF_SG_HV3_MAX_OVERRIDE]                  = 0,
			[CONF_SG_BT_NFS_SAMPLE_INTERVAL]            = 400,
			[CONF_SG_BT_LOAD_RATIO]                     = 50,
			[CONF_SG_AUTO_PS_MODE]                      = 1,
			[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]                 = 64,
			[CONF_SG_RATE_ADAPT_SNR]                    = 1,
			[CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_BR]      = 10,
			[CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_BR]      = 25,
			[CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_BR]      = 25,
			[CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_BR]       = 20,
			[CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_BR]       = 25,
			[CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_BR]       = 25,
			[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]     = 25,
			[CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_EDR]      = 8,
			[CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_EDR]      = 25,
			[CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_EDR]      = 25,
			[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,
			[CONF_SG_TEMP_PARAM_1]                      = 0,
			[CONF_SG_TEMP_PARAM_2]                      = 0,
			[CONF_SG_TEMP_PARAM_3]                      = 0,
			[CONF_SG_TEMP_PARAM_4]                      = 0,
			[CONF_SG_TEMP_PARAM_5]                      = 0,
			[CONF_SG_AP_BEACON_MISS_TX]                 = 3,
			[CONF_SG_RX_WINDOW_LENGTH]                  = 6,
			[CONF_SG_AP_CONNECTION_PROTECTION_TIME]     = 50,
			[CONF_SG_TEMP_PARAM_6]                      = 1,
		},
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		.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,
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		.rts_threshold               = IEEE80211_MAX_RTS_THRESHOLD,
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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_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,
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		.bcn_filt_ie_count           = 2,
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		.bcn_filt_ie = {
			[0] = {
				.ie          = WLAN_EID_CHANNEL_SWITCH,
				.rule        = CONF_BCN_RULE_PASS_ON_APPEARANCE,
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			},
			[1] = {
				.ie          = WLAN_EID_HT_INFORMATION,
				.rule        = CONF_BCN_RULE_PASS_ON_CHANGE,
			},
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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            = 16,
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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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	.sched_scan = {
		/* sched_scan requires dwell times in TU instead of TU/1000 */
		.min_dwell_time_active = 8,
		.max_dwell_time_active = 30,
		.dwell_time_passive    = 100,
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		.dwell_time_dfs        = 150,
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		.num_probe_reqs        = 2,
		.rssi_threshold        = -90,
		.snr_threshold         = 0,
	},
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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               = 1,
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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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	.fm_coex = {
		.enable                       = true,
		.swallow_period               = 5,
		.n_divider_fref_set_1         = 0xff,       /* default */
		.n_divider_fref_set_2         = 12,
		.m_divider_fref_set_1         = 148,
		.m_divider_fref_set_2         = 0xffff,     /* default */
		.coex_pll_stabilization_time  = 0xffffffff, /* default */
		.ldo_stabilization_time       = 0xffff,     /* default */
		.fm_disturbed_band_margin     = 0xff,       /* default */
		.swallow_clk_diff             = 0xff,       /* default */
	},
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	.rx_streaming = {
		.duration                      = 150,
		.queues                        = 0x1,
		.interval                      = 20,
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		.always                        = 0,
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	},
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	.hci_io_ds = HCI_IO_DS_6MA,
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};

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static void __wl1271_op_remove_interface(struct wl1271 *wl,
					 bool reset_tx_queues);
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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;
}

482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592
static int wl1271_set_rx_streaming(struct wl1271 *wl, bool enable)
{
	int ret = 0;

	/* we should hold wl->mutex */
	ret = wl1271_acx_ps_rx_streaming(wl, enable);
	if (ret < 0)
		goto out;

	if (enable)
		set_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags);
	else
		clear_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags);
out:
	return ret;
}

/*
 * this function is being called when the rx_streaming interval
 * has beed changed or rx_streaming should be disabled
 */
int wl1271_recalc_rx_streaming(struct wl1271 *wl)
{
	int ret = 0;
	int period = wl->conf.rx_streaming.interval;

	/* don't reconfigure if rx_streaming is disabled */
	if (!test_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags))
		goto out;

	/* reconfigure/disable according to new streaming_period */
	if (period &&
	    test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags) &&
	    (wl->conf.rx_streaming.always ||
	     test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
		ret = wl1271_set_rx_streaming(wl, true);
	else {
		ret = wl1271_set_rx_streaming(wl, false);
		/* don't cancel_work_sync since we might deadlock */
		del_timer_sync(&wl->rx_streaming_timer);
	}
out:
	return ret;
}

static void wl1271_rx_streaming_enable_work(struct work_struct *work)
{
	int ret;
	struct wl1271 *wl =
		container_of(work, struct wl1271, rx_streaming_enable_work);

	mutex_lock(&wl->mutex);

	if (test_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags) ||
	    !test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags) ||
	    (!wl->conf.rx_streaming.always &&
	     !test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
		goto out;

	if (!wl->conf.rx_streaming.interval)
		goto out;

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

	ret = wl1271_set_rx_streaming(wl, true);
	if (ret < 0)
		goto out_sleep;

	/* stop it after some time of inactivity */
	mod_timer(&wl->rx_streaming_timer,
		  jiffies + msecs_to_jiffies(wl->conf.rx_streaming.duration));

out_sleep:
	wl1271_ps_elp_sleep(wl);
out:
	mutex_unlock(&wl->mutex);
}

static void wl1271_rx_streaming_disable_work(struct work_struct *work)
{
	int ret;
	struct wl1271 *wl =
		container_of(work, struct wl1271, rx_streaming_disable_work);

	mutex_lock(&wl->mutex);

	if (!test_bit(WL1271_FLAG_RX_STREAMING_STARTED, &wl->flags))
		goto out;

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

	ret = wl1271_set_rx_streaming(wl, false);
	if (ret)
		goto out_sleep;

out_sleep:
	wl1271_ps_elp_sleep(wl);
out:
	mutex_unlock(&wl->mutex);
}

static void wl1271_rx_streaming_timer(unsigned long data)
{
	struct wl1271 *wl = (struct wl1271 *)data;
	ieee80211_queue_work(wl->hw, &wl->rx_streaming_disable_work);
}

593 594
static void wl1271_conf_init(struct wl1271 *wl)
{
595 596 597 598 599 600 601 602 603 604 605 606

	/*
	 * 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 */
607
	memcpy(&wl->conf, &default_conf, sizeof(default_conf));
608 609 610
}


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static int wl1271_plt_init(struct wl1271 *wl)
{
613 614 615
	struct conf_tx_ac_category *conf_ac;
	struct conf_tx_tid *conf_tid;
	int ret, i;
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617 618 619 620
	if (wl->chip.id == CHIP_ID_1283_PG20)
		ret = wl128x_cmd_general_parms(wl);
	else
		ret = wl1271_cmd_general_parms(wl);
621
	if (ret < 0)
622 623
		return ret;

624 625 626 627
	if (wl->chip.id == CHIP_ID_1283_PG20)
		ret = wl128x_cmd_radio_parms(wl);
	else
		ret = wl1271_cmd_radio_parms(wl);
628
	if (ret < 0)
629 630
		return ret;

631 632 633 634 635
	if (wl->chip.id != CHIP_ID_1283_PG20) {
		ret = wl1271_cmd_ext_radio_parms(wl);
		if (ret < 0)
			return ret;
	}
636 637 638
	if (ret < 0)
		return ret;

639 640 641 642 643
	/* 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);
645 646 647
	if (ret < 0)
		return ret;

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

652 653 654 655 656 657 658 659 660 661
	/* 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 */
662
	ret = wl1271_acx_conn_monit_params(wl, false);
663 664 665 666 667 668 669 670
	if (ret < 0)
		goto out_free_memmap;

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

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	/* FM WLAN coexistence */
	ret = wl1271_acx_fm_coex(wl);
	if (ret < 0)
		goto out_free_memmap;

676 677 678 679 680
	/* Energy detection */
	ret = wl1271_init_energy_detection(wl);
	if (ret < 0)
		goto out_free_memmap;

681 682 683 684
	ret = wl1271_acx_sta_mem_cfg(wl);
	if (ret < 0)
		goto out_free_memmap;

685
	/* Default fragmentation threshold */
686
	ret = wl1271_acx_frag_threshold(wl, wl->conf.tx.frag_threshold);
687 688 689
	if (ret < 0)
		goto out_free_memmap;

690 691
	/* Default TID/AC configuration */
	BUG_ON(wl->conf.tx.tid_conf_count != wl->conf.tx.ac_conf_count);
692
	for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
693 694 695 696 697 698 699
		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;

700 701 702 703 704 705 706 707 708 709 710 711 712
		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 */
713
	ret = wl1271_cmd_data_path(wl, 1);
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	if (ret < 0)
715 716 717 718 719 720 721 722 723 724 725
		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;
728 729 730 731 732 733

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

	return ret;
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}

736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786
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);
	}
}

787
static void wl1271_fw_status(struct wl1271 *wl,
788
			     struct wl1271_fw_full_status *full_status)
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{
790
	struct wl1271_fw_common_status *status = &full_status->common;
791
	struct timespec ts;
792
	u32 old_tx_blk_count = wl->tx_blocks_available;
793
	u32 freed_blocks = 0;
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	int i;

796
	if (wl->bss_type == BSS_TYPE_AP_BSS) {
797 798
		wl1271_raw_read(wl, FW_STATUS_ADDR, status,
				sizeof(struct wl1271_fw_ap_status), false);
799
	} else {
800 801
		wl1271_raw_read(wl, FW_STATUS_ADDR, status,
				sizeof(struct wl1271_fw_sta_status), false);
802 803
	}

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	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++) {
813 814
		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]);
818 819
	}

820 821 822 823 824 825 826 827
	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;
828

829 830 831 832 833 834 835 836 837 838
		/*
		 * 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 */
842
	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 */
846 847 848
	getnstimeofday(&ts);
	wl->time_offset = (timespec_to_ns(&ts) >> 10) -
		(s64)le32_to_cpu(status->fw_localtime);
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}

851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872
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));
}
873

874 875 876
#define WL1271_IRQ_MAX_LOOPS 256

irqreturn_t wl1271_irq(int irq, void *cookie)
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{
	int ret;
879
	u32 intr;
880
	int loopcount = WL1271_IRQ_MAX_LOOPS;
881 882 883
	struct wl1271 *wl = (struct wl1271 *)cookie;
	bool done = false;
	unsigned int defer_count;
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	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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890 891 892 893 894 895 896
	/*
	 * 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");

901
	if (unlikely(wl->state == WL1271_STATE_OFF))
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		goto out;

904
	ret = wl1271_ps_elp_wakeup(wl);
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	if (ret < 0)
		goto out;

908 909 910 911 912 913 914 915
	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();
916 917

		wl1271_fw_status(wl, wl->fw_status);
918
		intr = le32_to_cpu(wl->fw_status->common.intr);
919
		intr &= WL1271_INTR_MASK;
920
		if (!intr) {
921
			done = true;
922 923
			continue;
		}
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925 926 927 928 929 930 931 932 933
		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;
		}

934
		if (likely(intr & WL1271_ACX_INTR_DATA)) {
935
			wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
936

937
			wl1271_rx(wl, &wl->fw_status->common);
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939
			/* Check if any tx blocks were freed */
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			spin_lock_irqsave(&wl->wl_lock, flags);
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941
			if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
942
			    wl->tx_queue_count) {
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				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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			}

953 954 955 956
			/* check for tx results */
			if (wl->fw_status->common.tx_results_counter !=
			    (wl->tx_results_count & 0xff))
				wl1271_tx_complete(wl);
957 958 959 960 961 962

			/* 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);
963
		}
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965 966 967 968
		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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970 971 972 973
		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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975 976 977
		if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
			wl1271_debug(DEBUG_IRQ,
				     "WL1271_ACX_INTR_INIT_COMPLETE");
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979 980
		if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
			wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
981
	}
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	wl1271_ps_elp_sleep(wl);

out:
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	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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	mutex_unlock(&wl->mutex);
995 996

	return IRQ_HANDLED;
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997
}
998
EXPORT_SYMBOL_GPL(wl1271_irq);
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static int wl1271_fetch_firmware(struct wl1271 *wl)
{
	const struct firmware *fw;
1003
	const char *fw_name;
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1004 1005
	int ret;

1006 1007
	switch (wl->bss_type) {
	case BSS_TYPE_AP_BSS:
1008 1009 1010 1011
		if (wl->chip.id == CHIP_ID_1283_PG20)
			fw_name = WL128X_AP_FW_NAME;
		else
			fw_name = WL127X_AP_FW_NAME;
1012 1013 1014
		break;
	case BSS_TYPE_IBSS:
	case BSS_TYPE_STA_BSS:
1015 1016 1017 1018
		if (wl->chip.id == CHIP_ID_1283_PG20)
			fw_name = WL128X_FW_NAME;
		else
			fw_name	= WL1271_FW_NAME;
1019 1020 1021 1022 1023 1024 1025 1026 1027 1028
		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;
	}

1042
	vfree(wl->fw);
L
Luciano Coelho 已提交
1043
	wl->fw_len = fw->size;
1044
	wl->fw = vmalloc(wl->fw_len);
L
Luciano Coelho 已提交
1045 1046 1047 1048 1049 1050 1051 1052

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

	memcpy(wl->fw, fw->data, wl->fw_len);
1053
	wl->fw_bss_type = wl->bss_type;
L
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1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066
	ret = 0;

out:
	release_firmware(fw);

	return ret;
}

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

1067
	ret = request_firmware(&fw, WL12XX_NVS_NAME, wl1271_wl_to_dev(wl));
L
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1068 1069 1070 1071 1072 1073

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

1074
	wl->nvs = kmemdup(fw->data, fw->size, GFP_KERNEL);
L
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1075 1076 1077 1078 1079 1080 1081

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

1082 1083
	wl->nvs_len = fw->size;

L
Luciano Coelho 已提交
1084 1085 1086 1087 1088 1089
out:
	release_firmware(fw);

	return ret;
}

1090 1091 1092 1093 1094 1095 1096 1097 1098 1099
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;

1100 1101
	wl1271_info("Hardware recovery in progress. FW ver: %s pc: 0x%x",
		    wl->chip.fw_ver_str, wl1271_read32(wl, SCR_PAD4));
1102

1103 1104 1105
	if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
		ieee80211_connection_loss(wl->vif);

1106 1107 1108
	/* Prevent spurious TX during FW restart */
	ieee80211_stop_queues(wl->hw);

1109 1110 1111 1112 1113
	if (wl->sched_scanning) {
		ieee80211_sched_scan_stopped(wl->hw);
		wl->sched_scanning = false;
	}

1114
	/* reboot the chipset */
1115
	__wl1271_op_remove_interface(wl, false);
1116 1117
	ieee80211_restart_hw(wl->hw);

1118 1119 1120 1121 1122 1123
	/*
	 * Its safe to enable TX now - the queues are stopped after a request
	 * to restart the HW.
	 */
	ieee80211_wake_queues(wl->hw);

1124 1125 1126 1127
out:
	mutex_unlock(&wl->mutex);
}

L
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1128 1129 1130 1131 1132
static void wl1271_fw_wakeup(struct wl1271 *wl)
{
	u32 elp_reg;

	elp_reg = ELPCTRL_WAKE_UP;
1133
	wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
L
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1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152
}

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)
{
1153
	struct wl1271_partition_set partition;
L
Luciano Coelho 已提交
1154 1155
	int ret = 0;

J
Juuso Oikarinen 已提交
1156
	msleep(WL1271_PRE_POWER_ON_SLEEP);
1157 1158 1159
	ret = wl1271_power_on(wl);
	if (ret < 0)
		goto out;
L
Luciano Coelho 已提交
1160
	msleep(WL1271_POWER_ON_SLEEP);
1161 1162
	wl1271_io_reset(wl);
	wl1271_io_init(wl);
L
Luciano Coelho 已提交
1163 1164 1165

	/* We don't need a real memory partition here, because we only want
	 * to use the registers at this point. */
1166 1167 1168 1169
	memset(&partition, 0, sizeof(partition));
	partition.reg.start = REGISTERS_BASE;
	partition.reg.size = REGISTERS_DOWN_SIZE;
	wl1271_set_partition(wl, &partition);
L
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1170 1171 1172 1173 1174 1175 1176

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

	/* whal_FwCtrl_BootSm() */

	/* 0. read chip id from CHIP_ID */
T
Teemu Paasikivi 已提交
1177
	wl->chip.id = wl1271_read32(wl, CHIP_ID_B);
L
Luciano Coelho 已提交
1178 1179 1180 1181 1182 1183 1184 1185 1186 1187

	/* 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)
1188
			goto out;
L
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1189 1190 1191 1192 1193
		break;
	case CHIP_ID_1271_PG20:
		wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
			     wl->chip.id);

1194 1195 1196 1197
		/*
		 * 'end-of-transaction flag' and 'LPD mode flag'
		 * should be set in wl127x AP mode only
		 */
1198
		if (wl->bss_type == BSS_TYPE_AP_BSS)
1199 1200
			wl->quirks |= (WL12XX_QUIRK_END_OF_TRANSACTION |
				       WL12XX_QUIRK_LPD_MODE);
1201

L
Luciano Coelho 已提交
1202 1203
		ret = wl1271_setup(wl);
		if (ret < 0)
1204
			goto out;
L
Luciano Coelho 已提交
1205
		break;
1206 1207 1208 1209 1210 1211 1212
	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;
1213

1214 1215
		if (wl1271_set_block_size(wl))
			wl->quirks |= WL12XX_QUIRK_BLOCKSIZE_ALIGNMENT;
1216 1217
		break;
	case CHIP_ID_1283_PG10:
L
Luciano Coelho 已提交
1218
	default:
1219
		wl1271_warning("unsupported chip id: 0x%x", wl->chip.id);
L
Luciano Coelho 已提交
1220
		ret = -ENODEV;
1221
		goto out;
L
Luciano Coelho 已提交
1222 1223
	}

1224 1225
	/* Make sure the firmware type matches the BSS type */
	if (wl->fw == NULL || wl->fw_bss_type != wl->bss_type) {
L
Luciano Coelho 已提交
1226 1227
		ret = wl1271_fetch_firmware(wl);
		if (ret < 0)
1228
			goto out;
L
Luciano Coelho 已提交
1229 1230 1231 1232 1233 1234
	}

	/* No NVS from netlink, try to get it from the filesystem */
	if (wl->nvs == NULL) {
		ret = wl1271_fetch_nvs(wl);
		if (ret < 0)
1235
			goto out;
L
Luciano Coelho 已提交
1236 1237 1238 1239 1240 1241
	}

out:
	return ret;
}

1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259
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;
}

L
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1260 1261
int wl1271_plt_start(struct wl1271 *wl)
{
1262
	int retries = WL1271_BOOT_RETRIES;
L
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1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275
	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;
	}

1276 1277
	wl->bss_type = BSS_TYPE_STA_BSS;

1278 1279 1280 1281 1282
	while (retries) {
		retries--;
		ret = wl1271_chip_wakeup(wl);
		if (ret < 0)
			goto power_off;
L
Luciano Coelho 已提交
1283

1284 1285 1286
		ret = wl1271_boot(wl);
		if (ret < 0)
			goto power_off;
1287

1288 1289 1290
		ret = wl1271_plt_init(wl);
		if (ret < 0)
			goto irq_disable;
1291

1292 1293
		wl->state = WL1271_STATE_PLT;
		wl1271_notice("firmware booted in PLT mode (%s)",
L
Levi, Shahar 已提交
1294
			      wl->chip.fw_ver_str);
1295 1296 1297

		/* Check if any quirks are needed with older fw versions */
		wl->quirks |= wl1271_get_fw_ver_quirks(wl);
1298
		goto out;
1299

1300 1301 1302 1303 1304 1305 1306 1307 1308
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. */
1309 1310 1311
		wl1271_disable_interrupts(wl);
		wl1271_flush_deferred_work(wl);
		cancel_work_sync(&wl->netstack_work);
1312 1313 1314 1315
		mutex_lock(&wl->mutex);
power_off:
		wl1271_power_off(wl);
	}
L
Luciano Coelho 已提交
1316

1317 1318
	wl1271_error("firmware boot in PLT mode failed despite %d retries",
		     WL1271_BOOT_RETRIES);
L
Luciano Coelho 已提交
1319 1320 1321 1322 1323 1324
out:
	mutex_unlock(&wl->mutex);

	return ret;
}

1325
static int __wl1271_plt_stop(struct wl1271 *wl)
L
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1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340
{
	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;
1341
	wl->rx_counter = 0;
L
Luciano Coelho 已提交
1342 1343

	mutex_unlock(&wl->mutex);
1344 1345 1346
	wl1271_disable_interrupts(wl);
	wl1271_flush_deferred_work(wl);
	cancel_work_sync(&wl->netstack_work);
1347
	cancel_work_sync(&wl->recovery_work);
1348 1349 1350 1351 1352 1353 1354 1355
	mutex_lock(&wl->mutex);
out:
	return ret;
}

int wl1271_plt_stop(struct wl1271 *wl)
{
	int ret;
1356

1357 1358 1359
	mutex_lock(&wl->mutex);
	ret = __wl1271_plt_stop(wl);
	mutex_unlock(&wl->mutex);
L
Luciano Coelho 已提交
1360 1361 1362
	return ret;
}

1363
static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
L
Luciano Coelho 已提交
1364 1365
{
	struct wl1271 *wl = hw->priv;
1366
	unsigned long flags;
1367
	int q;
1368
	u8 hlid = 0;
L
Luciano Coelho 已提交
1369

I
Ido Yariv 已提交
1370 1371 1372 1373 1374
	q = wl1271_tx_get_queue(skb_get_queue_mapping(skb));

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

1375
	spin_lock_irqsave(&wl->wl_lock, flags);
I
Ido Yariv 已提交
1376

1377
	wl->tx_queue_count++;
1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388

	/*
	 * 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);
	}

1389
	/* queue the packet */
1390 1391 1392 1393 1394 1395
	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
1396 1397 1398 1399 1400 1401

	/*
	 * 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
1402 1403
	if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
	    !test_bit(WL1271_FLAG_TX_PENDING, &wl->flags))
I
Ido Yariv 已提交
1404
		ieee80211_queue_work(wl->hw, &wl->tx_work);
I
Ido Yariv 已提交
1405 1406

	spin_unlock_irqrestore(&wl->wl_lock, flags);
L
Luciano Coelho 已提交
1407 1408
}

1409 1410
int wl1271_tx_dummy_packet(struct wl1271 *wl)
{
1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435
	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))

1436
static struct sk_buff *wl12xx_alloc_dummy_packet(struct wl1271 *wl)
1437 1438
{
	struct sk_buff *skb;
1439
	struct ieee80211_hdr_3addr *hdr;
1440 1441 1442 1443
	unsigned int dummy_packet_size;

	dummy_packet_size = TOTAL_TX_DUMMY_PACKET_SIZE -
			    sizeof(struct wl1271_tx_hw_descr) - sizeof(*hdr);
1444

1445
	skb = dev_alloc_skb(TOTAL_TX_DUMMY_PACKET_SIZE);
1446
	if (!skb) {
1447 1448
		wl1271_warning("Failed to allocate a dummy packet skb");
		return NULL;
1449 1450 1451 1452 1453 1454 1455
	}

	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 |
1456 1457
					 IEEE80211_STYPE_NULLFUNC |
					 IEEE80211_FCTL_TODS);
1458

1459
	memset(skb_put(skb, dummy_packet_size), 0, dummy_packet_size);
1460

1461 1462
	/* Dummy packets require the TID to be management */
	skb->priority = WL1271_TID_MGMT;
1463

1464
	/* Initialize all fields that might be used */
1465
	skb_set_queue_mapping(skb, 0);
1466
	memset(IEEE80211_SKB_CB(skb), 0, sizeof(struct ieee80211_tx_info));
1467

1468
	return skb;
1469 1470
}

1471

1472 1473 1474 1475
static struct notifier_block wl1271_dev_notifier = {
	.notifier_call = wl1271_dev_notify,
};

1476
#ifdef CONFIG_PM
1477
static int wl1271_configure_suspend_sta(struct wl1271 *wl)
1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524
{
	int ret;

	mutex_lock(&wl->mutex);

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

	/* enter psm if needed*/
	if (!test_bit(WL1271_FLAG_PSM, &wl->flags)) {
		DECLARE_COMPLETION_ONSTACK(compl);

		wl->ps_compl = &compl;
		ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
				   wl->basic_rate, true);
		if (ret < 0)
			goto out_sleep;

		/* we must unlock here so we will be able to get events */
		wl1271_ps_elp_sleep(wl);
		mutex_unlock(&wl->mutex);

		ret = wait_for_completion_timeout(
			&compl, msecs_to_jiffies(WL1271_PS_COMPLETE_TIMEOUT));
		if (ret <= 0) {
			wl1271_warning("couldn't enter ps mode!");
			ret = -EBUSY;
			goto out;
		}

		/* take mutex again, and wakeup */
		mutex_lock(&wl->mutex);

		ret = wl1271_ps_elp_wakeup(wl);
		if (ret < 0)
			goto out_unlock;
	}
out_sleep:
	wl1271_ps_elp_sleep(wl);
out_unlock:
	mutex_unlock(&wl->mutex);
out:
	return ret;

}

1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552
static int wl1271_configure_suspend_ap(struct wl1271 *wl)
{
	int ret;

	mutex_lock(&wl->mutex);

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

	ret = wl1271_acx_set_ap_beacon_filter(wl, true);

	wl1271_ps_elp_sleep(wl);
out_unlock:
	mutex_unlock(&wl->mutex);
	return ret;

}

static int wl1271_configure_suspend(struct wl1271 *wl)
{
	if (wl->bss_type == BSS_TYPE_STA_BSS)
		return wl1271_configure_suspend_sta(wl);
	if (wl->bss_type == BSS_TYPE_AP_BSS)
		return wl1271_configure_suspend_ap(wl);
	return 0;
}

1553 1554 1555
static void wl1271_configure_resume(struct wl1271 *wl)
{
	int ret;
1556 1557
	bool is_sta = wl->bss_type == BSS_TYPE_STA_BSS;
	bool is_ap = wl->bss_type == BSS_TYPE_AP_BSS;
1558

1559
	if (!is_sta && !is_ap)
1560 1561 1562 1563 1564 1565 1566
		return;

	mutex_lock(&wl->mutex);
	ret = wl1271_ps_elp_wakeup(wl);
	if (ret < 0)
		goto out;

1567 1568 1569 1570 1571 1572 1573 1574
	if (is_sta) {
		/* exit psm if it wasn't configured */
		if (!test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags))
			wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
					   wl->basic_rate, true);
	} else if (is_ap) {
		wl1271_acx_set_ap_beacon_filter(wl, false);
	}
1575 1576 1577 1578 1579 1580

	wl1271_ps_elp_sleep(wl);
out:
	mutex_unlock(&wl->mutex);
}

1581 1582 1583 1584
static int wl1271_op_suspend(struct ieee80211_hw *hw,
			    struct cfg80211_wowlan *wow)
{
	struct wl1271 *wl = hw->priv;
1585 1586
	int ret;

1587
	wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow);
1588
	WARN_ON(!wow || !wow->any);
1589

1590 1591 1592 1593 1594 1595 1596 1597 1598
	wl->wow_enabled = true;
	ret = wl1271_configure_suspend(wl);
	if (ret < 0) {
		wl1271_warning("couldn't prepare device to suspend");
		return ret;
	}
	/* flush any remaining work */
	wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
	flush_delayed_work(&wl->scan_complete_work);
1599

1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615
	/*
	 * disable and re-enable interrupts in order to flush
	 * the threaded_irq
	 */
	wl1271_disable_interrupts(wl);

	/*
	 * set suspended flag to avoid triggering a new threaded_irq
	 * work. no need for spinlock as interrupts are disabled.
	 */
	set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);

	wl1271_enable_interrupts(wl);
	flush_work(&wl->tx_work);
	flush_delayed_work(&wl->pspoll_work);
	flush_delayed_work(&wl->elp_work);
1616

1617 1618 1619 1620 1621 1622
	return 0;
}

static int wl1271_op_resume(struct ieee80211_hw *hw)
{
	struct wl1271 *wl = hw->priv;
1623 1624 1625
	unsigned long flags;
	bool run_irq_work = false;

1626 1627
	wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d",
		     wl->wow_enabled);
1628
	WARN_ON(!wl->wow_enabled);
1629 1630 1631 1632 1633

	/*
	 * re-enable irq_work enqueuing, and call irq_work directly if
	 * there is a pending work.
	 */
1634 1635 1636 1637 1638
	spin_lock_irqsave(&wl->wl_lock, flags);
	clear_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
	if (test_and_clear_bit(WL1271_FLAG_PENDING_WORK, &wl->flags))
		run_irq_work = true;
	spin_unlock_irqrestore(&wl->wl_lock, flags);
1639

1640 1641 1642 1643 1644
	if (run_irq_work) {
		wl1271_debug(DEBUG_MAC80211,
			     "run postponed irq_work directly");
		wl1271_irq(0, wl);
		wl1271_enable_interrupts(wl);
1645
	}
1646
	wl1271_configure_resume(wl);
1647
	wl->wow_enabled = false;
1648

1649 1650
	return 0;
}
1651
#endif
1652

L
Luciano Coelho 已提交
1653
static int wl1271_op_start(struct ieee80211_hw *hw)
1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665
{
	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.
1666 1667 1668
	 *
	 * In addition, we currently have different firmwares for AP and managed
	 * operation. We will know which to boot according to interface type.
1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680
	 */

	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
1681 1682
{
	struct wl1271 *wl = hw->priv;
1683
	struct wiphy *wiphy = hw->wiphy;
1684
	int retries = WL1271_BOOT_RETRIES;
L
Luciano Coelho 已提交
1685
	int ret = 0;
1686
	bool booted = false;
L
Luciano Coelho 已提交
1687

1688 1689
	wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
		     vif->type, vif->addr);
L
Luciano Coelho 已提交
1690 1691

	mutex_lock(&wl->mutex);
1692
	if (wl->vif) {
1693 1694
		wl1271_debug(DEBUG_MAC80211,
			     "multiple vifs are not supported yet");
1695 1696 1697 1698
		ret = -EBUSY;
		goto out;
	}

1699 1700 1701 1702 1703 1704 1705 1706 1707 1708
	/*
	 * 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;
	}

1709 1710 1711
	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
		wl->bss_type = BSS_TYPE_STA_BSS;
1712
		wl->set_bss_type = BSS_TYPE_STA_BSS;
1713 1714 1715
		break;
	case NL80211_IFTYPE_ADHOC:
		wl->bss_type = BSS_TYPE_IBSS;
1716
		wl->set_bss_type = BSS_TYPE_STA_BSS;
1717
		break;
A
Arik Nemtsov 已提交
1718 1719 1720
	case NL80211_IFTYPE_AP:
		wl->bss_type = BSS_TYPE_AP_BSS;
		break;
1721 1722 1723 1724 1725 1726
	default:
		ret = -EOPNOTSUPP;
		goto out;
	}

	memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
L
Luciano Coelho 已提交
1727 1728 1729 1730 1731 1732 1733 1734

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

1735 1736 1737 1738 1739
	while (retries) {
		retries--;
		ret = wl1271_chip_wakeup(wl);
		if (ret < 0)
			goto power_off;
L
Luciano Coelho 已提交
1740

1741 1742 1743
		ret = wl1271_boot(wl);
		if (ret < 0)
			goto power_off;
L
Luciano Coelho 已提交
1744

1745 1746 1747
		ret = wl1271_hw_init(wl);
		if (ret < 0)
			goto irq_disable;
L
Luciano Coelho 已提交
1748

1749 1750
		booted = true;
		break;
1751

1752 1753 1754 1755 1756 1757 1758 1759 1760
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. */
1761 1762 1763
		wl1271_disable_interrupts(wl);
		wl1271_flush_deferred_work(wl);
		cancel_work_sync(&wl->netstack_work);
1764 1765 1766 1767
		mutex_lock(&wl->mutex);
power_off:
		wl1271_power_off(wl);
	}
1768

1769 1770 1771 1772 1773 1774 1775 1776
	if (!booted) {
		wl1271_error("firmware boot failed despite %d retries",
			     WL1271_BOOT_RETRIES);
		goto out;
	}

	wl->vif = vif;
	wl->state = WL1271_STATE_ON;
1777
	set_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags);
L
Levi, Shahar 已提交
1778
	wl1271_info("firmware booted (%s)", wl->chip.fw_ver_str);
1779 1780 1781

	/* update hw/fw version info in wiphy struct */
	wiphy->hw_version = wl->chip.id;
L
Levi, Shahar 已提交
1782
	strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
1783 1784
		sizeof(wiphy->fw_version));

1785 1786 1787
	/* Check if any quirks are needed with older fw versions */
	wl->quirks |= wl1271_get_fw_ver_quirks(wl);

1788 1789 1790 1791 1792 1793 1794 1795 1796 1797
	/*
	 * 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 ");

1798
out:
L
Luciano Coelho 已提交
1799 1800
	mutex_unlock(&wl->mutex);

1801
	mutex_lock(&wl_list_mutex);
1802
	if (!ret)
1803
		list_add(&wl->list, &wl_list);
1804
	mutex_unlock(&wl_list_mutex);
1805

L
Luciano Coelho 已提交
1806 1807 1808
	return ret;
}

1809 1810
static void __wl1271_op_remove_interface(struct wl1271 *wl,
					 bool reset_tx_queues)
L
Luciano Coelho 已提交
1811 1812 1813
{
	int i;

1814
	wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
L
Luciano Coelho 已提交
1815

1816 1817 1818 1819
	/* because of hardware recovery, we may get here twice */
	if (wl->state != WL1271_STATE_ON)
		return;

1820
	wl1271_info("down");
L
Luciano Coelho 已提交
1821

1822
	mutex_lock(&wl_list_mutex);
1823
	list_del(&wl->list);
1824
	mutex_unlock(&wl_list_mutex);
1825

1826
	/* enable dyn ps just in case (if left on due to fw crash etc) */
1827
	if (wl->bss_type == BSS_TYPE_STA_BSS)
1828
		ieee80211_enable_dyn_ps(wl->vif);
1829

L
Luciano Coelho 已提交
1830 1831
	if (wl->scan.state != WL1271_SCAN_STATE_IDLE) {
		wl->scan.state = WL1271_SCAN_STATE_IDLE;
1832
		memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
1833
		wl->scan.req = NULL;
1834
		ieee80211_scan_completed(wl->hw, true);
L
Luciano Coelho 已提交
1835 1836
	}

1837 1838 1839 1840
	/*
	 * 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
1841 1842 1843 1844
	wl->state = WL1271_STATE_OFF;

	mutex_unlock(&wl->mutex);

1845 1846
	wl1271_disable_interrupts(wl);
	wl1271_flush_deferred_work(wl);
1847
	cancel_delayed_work_sync(&wl->scan_complete_work);
1848
	cancel_work_sync(&wl->netstack_work);
L
Luciano Coelho 已提交
1849
	cancel_work_sync(&wl->tx_work);
1850 1851 1852
	del_timer_sync(&wl->rx_streaming_timer);
	cancel_work_sync(&wl->rx_streaming_enable_work);
	cancel_work_sync(&wl->rx_streaming_disable_work);
1853
	cancel_delayed_work_sync(&wl->pspoll_work);
1854
	cancel_delayed_work_sync(&wl->elp_work);
L
Luciano Coelho 已提交
1855 1856 1857 1858

	mutex_lock(&wl->mutex);

	/* let's notify MAC80211 about the remaining pending TX frames */
1859
	wl1271_tx_reset(wl, reset_tx_queues);
L
Luciano Coelho 已提交
1860 1861 1862 1863 1864 1865
	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;
1866
	wl->set_bss_type = MAX_BSS_TYPE;
1867
	wl->band = IEEE80211_BAND_2GHZ;
L
Luciano Coelho 已提交
1868 1869

	wl->rx_counter = 0;
1870
	wl->psm_entry_retry = 0;
L
Luciano Coelho 已提交
1871 1872
	wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
	wl->tx_blocks_available = 0;
1873
	wl->tx_allocated_blocks = 0;
L
Luciano Coelho 已提交
1874 1875
	wl->tx_results_count = 0;
	wl->tx_packets_count = 0;
1876
	wl->tx_security_last_seq = 0;
1877
	wl->tx_security_seq = 0;
L
Luciano Coelho 已提交
1878 1879
	wl->time_offset = 0;
	wl->session_counter = 0;
1880
	wl->rate_set = CONF_TX_RATE_MASK_BASIC;
1881
	wl->vif = NULL;
1882
	wl->filters = 0;
1883
	wl1271_free_ap_keys(wl);
1884
	memset(wl->ap_hlid_map, 0, sizeof(wl->ap_hlid_map));
1885 1886
	wl->ap_fw_ps_map = 0;
	wl->ap_ps_map = 0;
1887
	wl->sched_scanning = false;
1888

1889 1890 1891 1892 1893 1894 1895
	/*
	 * 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
1896 1897 1898 1899
	for (i = 0; i < NUM_TX_QUEUES; i++)
		wl->tx_blocks_freed[i] = 0;

	wl1271_debugfs_reset(wl);
1900 1901 1902 1903 1904 1905 1906

	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;
1907
}
1908

1909 1910 1911 1912 1913 1914
static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif)
{
	struct wl1271 *wl = hw->priv;

	mutex_lock(&wl->mutex);
1915 1916 1917 1918 1919 1920
	/*
	 * 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);
1921
		__wl1271_op_remove_interface(wl, true);
1922
	}
1923

1924
	mutex_unlock(&wl->mutex);
1925
	cancel_work_sync(&wl->recovery_work);
L
Luciano Coelho 已提交
1926 1927
}

O
Ohad Ben-Cohen 已提交
1928
void wl1271_configure_filters(struct wl1271 *wl, unsigned int filters)
1929
{
1930
	wl1271_set_default_filters(wl);
1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960

	/* 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;
	}
}

1961
static int wl1271_dummy_join(struct wl1271 *wl)
1962
{
1963
	int ret = 0;
1964 1965 1966 1967 1968 1969
	/* 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);

1970 1971 1972
	/* pass through frames from all BSS */
	wl1271_configure_filters(wl, FIF_OTHER_BSS);

1973
	ret = wl1271_cmd_join(wl, wl->set_bss_type);
1974 1975 1976
	if (ret < 0)
		goto out;

1977
	set_bit(WL1271_FLAG_JOINED, &wl->flags);
1978 1979 1980 1981 1982

out:
	return ret;
}

1983
static int wl1271_join(struct wl1271 *wl, bool set_assoc)
1984 1985 1986
{
	int ret;

1987 1988 1989 1990
	/*
	 * 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.
1991 1992 1993 1994
	 * 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 :)
1995 1996 1997 1998 1999 2000 2001
	 */
	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);

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
	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)
2039 2040 2041 2042 2043 2044 2045 2046
{
	int ret;

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

2047
	clear_bit(WL1271_FLAG_JOINED, &wl->flags);
2048
	memset(wl->bssid, 0, ETH_ALEN);
2049

O
Ohad Ben-Cohen 已提交
2050
	/* stop filtering packets based on bssid */
2051
	wl1271_configure_filters(wl, FIF_OTHER_BSS);
2052 2053 2054 2055 2056

out:
	return ret;
}

2057 2058 2059 2060 2061 2062 2063 2064
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;
}

2065
static int wl1271_sta_handle_idle(struct wl1271 *wl, bool idle)
2066 2067 2068 2069 2070 2071 2072 2073 2074
{
	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
2075
		wl->rate_set = wl1271_tx_min_rate_get(wl);
2076
		ret = wl1271_acx_sta_rate_policies(wl);
2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089
		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;
2090 2091 2092 2093 2094 2095 2096

		/* The current firmware only supports sched_scan in idle */
		if (wl->sched_scanning) {
			wl1271_scan_sched_scan_stop(wl);
			ieee80211_sched_scan_stopped(wl->hw);
		}

2097 2098 2099 2100 2101 2102 2103 2104 2105 2106
		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
2107 2108 2109 2110 2111
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;
2112
	bool is_ap;
L
Luciano Coelho 已提交
2113 2114 2115

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

2116 2117
	wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s"
		     " changed 0x%x",
L
Luciano Coelho 已提交
2118 2119
		     channel,
		     conf->flags & IEEE80211_CONF_PS ? "on" : "off",
2120
		     conf->power_level,
2121 2122
		     conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use",
			 changed);
L
Luciano Coelho 已提交
2123

2124 2125 2126 2127 2128 2129 2130 2131 2132
	/*
	 * 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
2133 2134
	mutex_lock(&wl->mutex);

2135
	if (unlikely(wl->state == WL1271_STATE_OFF)) {
2136 2137 2138 2139 2140 2141
		/* we support configuring the channel and band while off */
		if ((changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
			wl->band = conf->channel->band;
			wl->channel = channel;
		}

2142
		goto out;
2143
	}
2144

2145 2146
	is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);

2147
	ret = wl1271_ps_elp_wakeup(wl);
L
Luciano Coelho 已提交
2148 2149 2150
	if (ret < 0)
		goto out;

2151
	/* if the channel changes while joined, join again */
2152 2153 2154
	if (changed & IEEE80211_CONF_CHANGE_CHANNEL &&
	    ((wl->band != conf->channel->band) ||
	     (wl->channel != channel))) {
2155 2156 2157
		wl->band = conf->channel->band;
		wl->channel = channel;

2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169
		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);
2170
			if (ret < 0)
2171
				wl1271_warning("rate policy for channel "
2172
					       "failed %d", ret);
2173 2174 2175 2176 2177 2178 2179

			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);
			}
2180 2181 2182
		}
	}

2183 2184 2185
	if (changed & IEEE80211_CONF_CHANGE_IDLE && !is_ap) {
		ret = wl1271_sta_handle_idle(wl,
					conf->flags & IEEE80211_CONF_IDLE);
2186 2187
		if (ret < 0)
			wl1271_warning("idle mode change failed %d", ret);
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2188 2189
	}

2190 2191 2192 2193 2194 2195 2196
	/*
	 * 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);

2197 2198 2199
	if (conf->flags & IEEE80211_CONF_PS &&
	    !test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
		set_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
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2200 2201 2202 2203 2204 2205

		/*
		 * 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.
		 */
2206
		if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
2207
			wl1271_debug(DEBUG_PSM, "psm enabled");
J
Juuso Oikarinen 已提交
2208
			ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
2209
						 wl->basic_rate, true);
2210
		}
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2211
	} else if (!(conf->flags & IEEE80211_CONF_PS) &&
2212
		   test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
2213
		wl1271_debug(DEBUG_PSM, "psm disabled");
L
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2214

2215
		clear_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
L
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2216

2217
		if (test_bit(WL1271_FLAG_PSM, &wl->flags))
J
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2218
			ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
2219
						 wl->basic_rate, true);
L
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2220 2221 2222 2223 2224
	}

	if (conf->power_level != wl->power_level) {
		ret = wl1271_acx_tx_power(wl, conf->power_level);
		if (ret < 0)
2225
			goto out_sleep;
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2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238

		wl->power_level = conf->power_level;
	}

out_sleep:
	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);

	return ret;
}

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2239 2240 2241 2242 2243 2244
struct wl1271_filter_params {
	bool enabled;
	int mc_list_length;
	u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
};

2245 2246
static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
				       struct netdev_hw_addr_list *mc_list)
2247 2248
{
	struct wl1271_filter_params *fp;
2249
	struct netdev_hw_addr *ha;
2250
	struct wl1271 *wl = hw->priv;
2251

2252 2253
	if (unlikely(wl->state == WL1271_STATE_OFF))
		return 0;
2254

2255
	fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
2256 2257 2258 2259 2260 2261 2262
	if (!fp) {
		wl1271_error("Out of memory setting filters.");
		return 0;
	}

	/* update multicast filtering parameters */
	fp->mc_list_length = 0;
2263 2264 2265 2266 2267
	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) {
2268
			memcpy(fp->mc_list[fp->mc_list_length],
2269
					ha->addr, ETH_ALEN);
2270
			fp->mc_list_length++;
2271
		}
2272 2273
	}

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2274
	return (u64)(unsigned long)fp;
2275
}
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2276

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2277 2278 2279 2280 2281 2282 2283
#define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
				  FIF_ALLMULTI | \
				  FIF_FCSFAIL | \
				  FIF_BCN_PRBRESP_PROMISC | \
				  FIF_CONTROL | \
				  FIF_OTHER_BSS)

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static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
				       unsigned int changed,
2286
				       unsigned int *total, u64 multicast)
L
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2287
{
J
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2288
	struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
L
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2289
	struct wl1271 *wl = hw->priv;
J
Juuso Oikarinen 已提交
2290
	int ret;
L
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2291

2292 2293
	wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter changed %x"
		     " total %x", changed, *total);
L
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2294

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2295 2296
	mutex_lock(&wl->mutex);

2297 2298 2299 2300
	*total &= WL1271_SUPPORTED_FILTERS;
	changed &= WL1271_SUPPORTED_FILTERS;

	if (unlikely(wl->state == WL1271_STATE_OFF))
J
Juuso Oikarinen 已提交
2301 2302
		goto out;

2303
	ret = wl1271_ps_elp_wakeup(wl);
J
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2304 2305 2306
	if (ret < 0)
		goto out;

2307 2308 2309 2310 2311 2312 2313 2314 2315 2316
	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;
	}
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2317

J
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2318 2319 2320
	/* determine, whether supported filter values have changed */
	if (changed == 0)
		goto out_sleep;
2321

2322 2323 2324 2325
	/* configure filters */
	wl->filters = *total;
	wl1271_configure_filters(wl, 0);

J
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2326 2327 2328 2329 2330 2331 2332 2333 2334 2335
	/* 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);
2336
	kfree(fp);
L
Luciano Coelho 已提交
2337 2338
}

2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 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 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505
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
2506 2507 2508 2509 2510 2511 2512
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;
2513 2514
	u32 tx_seq_32 = 0;
	u16 tx_seq_16 = 0;
L
Luciano Coelho 已提交
2515 2516 2517 2518
	u8 key_type;

	wl1271_debug(DEBUG_MAC80211, "mac80211 set key");

2519
	wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x sta: %p", cmd, sta);
L
Luciano Coelho 已提交
2520
	wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
2521
		     key_conf->cipher, key_conf->keyidx,
L
Luciano Coelho 已提交
2522 2523 2524 2525 2526
		     key_conf->keylen, key_conf->flags);
	wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);

	mutex_lock(&wl->mutex);

2527 2528 2529 2530 2531
	if (unlikely(wl->state == WL1271_STATE_OFF)) {
		ret = -EAGAIN;
		goto out_unlock;
	}

2532
	ret = wl1271_ps_elp_wakeup(wl);
L
Luciano Coelho 已提交
2533 2534 2535
	if (ret < 0)
		goto out_unlock;

2536 2537 2538
	switch (key_conf->cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
L
Luciano Coelho 已提交
2539 2540 2541 2542
		key_type = KEY_WEP;

		key_conf->hw_key_idx = key_conf->keyidx;
		break;
2543
	case WLAN_CIPHER_SUITE_TKIP:
L
Luciano Coelho 已提交
2544 2545 2546
		key_type = KEY_TKIP;

		key_conf->hw_key_idx = key_conf->keyidx;
2547 2548
		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
2549
		break;
2550
	case WLAN_CIPHER_SUITE_CCMP:
L
Luciano Coelho 已提交
2551 2552 2553
		key_type = KEY_AES;

		key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2554 2555
		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
2556
		break;
2557 2558 2559 2560 2561
	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
2562
	default:
2563
		wl1271_error("Unknown key algo 0x%x", key_conf->cipher);
L
Luciano Coelho 已提交
2564 2565 2566 2567 2568 2569 2570

		ret = -EOPNOTSUPP;
		goto out_sleep;
	}

	switch (cmd) {
	case SET_KEY:
2571 2572 2573 2574
		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
2575 2576 2577 2578 2579 2580 2581
		if (ret < 0) {
			wl1271_error("Could not add or replace key");
			goto out_sleep;
		}
		break;

	case DISABLE_KEY:
2582 2583 2584 2585
		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
2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607
		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,
2608
			     struct ieee80211_vif *vif,
L
Luciano Coelho 已提交
2609 2610 2611 2612 2613
			     struct cfg80211_scan_request *req)
{
	struct wl1271 *wl = hw->priv;
	int ret;
	u8 *ssid = NULL;
2614
	size_t len = 0;
L
Luciano Coelho 已提交
2615 2616 2617 2618 2619

	wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");

	if (req->n_ssids) {
		ssid = req->ssids[0].ssid;
2620
		len = req->ssids[0].ssid_len;
L
Luciano Coelho 已提交
2621 2622 2623 2624
	}

	mutex_lock(&wl->mutex);

2625 2626 2627 2628 2629 2630 2631 2632 2633 2634
	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;
	}

2635
	ret = wl1271_ps_elp_wakeup(wl);
L
Luciano Coelho 已提交
2636 2637 2638
	if (ret < 0)
		goto out;

2639
	ret = wl1271_scan(hw->priv, ssid, len, req);
L
Luciano Coelho 已提交
2640 2641 2642 2643 2644 2645 2646 2647 2648

	wl1271_ps_elp_sleep(wl);

out:
	mutex_unlock(&wl->mutex);

	return ret;
}

2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702
static int wl1271_op_sched_scan_start(struct ieee80211_hw *hw,
				      struct ieee80211_vif *vif,
				      struct cfg80211_sched_scan_request *req,
				      struct ieee80211_sched_scan_ies *ies)
{
	struct wl1271 *wl = hw->priv;
	int ret;

	wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_start");

	mutex_lock(&wl->mutex);

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

	ret = wl1271_scan_sched_scan_config(wl, req, ies);
	if (ret < 0)
		goto out_sleep;

	ret = wl1271_scan_sched_scan_start(wl);
	if (ret < 0)
		goto out_sleep;

	wl->sched_scanning = true;

out_sleep:
	wl1271_ps_elp_sleep(wl);
out:
	mutex_unlock(&wl->mutex);
	return ret;
}

static void wl1271_op_sched_scan_stop(struct ieee80211_hw *hw,
				      struct ieee80211_vif *vif)
{
	struct wl1271 *wl = hw->priv;
	int ret;

	wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_stop");

	mutex_lock(&wl->mutex);

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

	wl1271_scan_sched_scan_stop(wl);

	wl1271_ps_elp_sleep(wl);
out:
	mutex_unlock(&wl->mutex);
}

2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714
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;
	}

2715
	ret = wl1271_ps_elp_wakeup(wl);
2716 2717 2718
	if (ret < 0)
		goto out;

2719
	ret = wl1271_acx_frag_threshold(wl, value);
2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730
	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
2731 2732 2733
static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
	struct wl1271 *wl = hw->priv;
2734
	int ret = 0;
L
Luciano Coelho 已提交
2735 2736 2737

	mutex_lock(&wl->mutex);

2738 2739
	if (unlikely(wl->state == WL1271_STATE_OFF)) {
		ret = -EAGAIN;
2740
		goto out;
2741
	}
2742

2743
	ret = wl1271_ps_elp_wakeup(wl);
L
Luciano Coelho 已提交
2744 2745 2746
	if (ret < 0)
		goto out;

2747
	ret = wl1271_acx_rts_threshold(wl, value);
L
Luciano Coelho 已提交
2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758
	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;
}

2759
static int wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *skb,
2760
			    int offset)
2761
{
2762 2763 2764
	u8 ssid_len;
	const u8 *ptr = cfg80211_find_ie(WLAN_EID_SSID, skb->data + offset,
					 skb->len - offset);
2765

2766 2767 2768 2769 2770 2771 2772 2773 2774
	if (!ptr) {
		wl1271_error("No SSID in IEs!");
		return -ENOENT;
	}

	ssid_len = ptr[1];
	if (ssid_len > IEEE80211_MAX_SSID_LEN) {
		wl1271_error("SSID is too long!");
		return -EINVAL;
2775
	}
2776

2777 2778 2779
	wl->ssid_len = ssid_len;
	memcpy(wl->ssid, ptr+2, ssid_len);
	return 0;
2780 2781
}

2782
static int wl1271_bss_erp_info_changed(struct wl1271 *wl,
L
Luciano Coelho 已提交
2783 2784 2785
				       struct ieee80211_bss_conf *bss_conf,
				       u32 changed)
{
2786
	int ret = 0;
L
Luciano Coelho 已提交
2787

2788 2789 2790 2791 2792 2793 2794 2795 2796 2797
	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
2798

2799 2800 2801 2802 2803 2804
	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
2805

2806 2807 2808 2809 2810 2811 2812 2813 2814 2815
	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;
		}
	}
2816

2817 2818 2819
out:
	return ret;
}
L
Luciano Coelho 已提交
2820

2821 2822 2823 2824 2825 2826 2827 2828 2829 2830
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",
2831 2832 2833 2834 2835
			bss_conf->beacon_int);

		wl->beacon_int = bss_conf->beacon_int;
	}

2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890
	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;
2891

2892 2893
	if ((changed & BSS_CHANGED_BASIC_RATES)) {
		u32 rates = bss_conf->basic_rates;
2894

2895 2896
		wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl, rates);
		wl->basic_rate = wl1271_tx_min_rate_get(wl);
2897 2898

		ret = wl1271_init_ap_rates(wl);
2899
		if (ret < 0) {
2900
			wl1271_error("AP rate policy change failed %d", ret);
2901 2902
			goto out;
		}
2903 2904 2905 2906

		ret = wl1271_ap_init_templates(wl);
		if (ret < 0)
			goto out;
2907
	}
2908

2909 2910 2911
	ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf, changed);
	if (ret < 0)
		goto out;
2912

2913 2914 2915 2916 2917 2918
	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;
2919

2920 2921
				set_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
				wl1271_debug(DEBUG_AP, "started AP");
2922 2923 2924 2925

				ret = wl1271_ap_init_hwenc(wl);
				if (ret < 0)
					goto out;
2926
			}
2927 2928 2929 2930 2931
		} else {
			if (test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
				ret = wl1271_cmd_stop_bss(wl);
				if (ret < 0)
					goto out;
2932

2933 2934 2935 2936 2937
				clear_bit(WL1271_FLAG_AP_STARTED, &wl->flags);
				wl1271_debug(DEBUG_AP, "stopped AP");
			}
		}
	}
2938

2939 2940 2941 2942 2943 2944
	ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
	if (ret < 0)
		goto out;
out:
	return;
}
J
Juuso Oikarinen 已提交
2945

2946 2947 2948 2949 2950 2951 2952 2953
/* 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);
2954
	u32 sta_rate_set = 0;
2955
	int ret;
2956
	struct ieee80211_sta *sta;
2957 2958
	bool sta_exists = false;
	struct ieee80211_sta_ht_cap sta_ht_cap;
2959 2960 2961 2962 2963 2964

	if (is_ibss) {
		ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf,
						     changed);
		if (ret < 0)
			goto out;
2965 2966
	}

2967 2968 2969 2970 2971 2972 2973 2974
	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) {
2975 2976 2977 2978 2979 2980 2981 2982 2983 2984
		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;
	}

2985
	if ((changed & BSS_CHANGED_CQM)) {
2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996
		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;
	}

2997 2998 2999 3000 3001 3002
	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)) {
3003
		memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
3004

3005 3006 3007 3008
		if (!is_zero_ether_addr(wl->bssid)) {
			ret = wl1271_cmd_build_null_data(wl);
			if (ret < 0)
				goto out;
3009

3010 3011 3012
			ret = wl1271_build_qos_null_data(wl);
			if (ret < 0)
				goto out;
3013

3014 3015
			/* filter out all packets not from this BSSID */
			wl1271_configure_filters(wl, 0);
3016

3017 3018 3019
			/* Need to update the BSSID (for filtering etc) */
			do_join = true;
		}
3020 3021
	}

3022 3023 3024 3025 3026 3027 3028 3029
	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);
3030 3031 3032 3033
		sta_ht_cap = sta->ht_cap;
		sta_exists = true;
	}
	rcu_read_unlock();
3034

3035
	if (sta_exists) {
3036 3037 3038
		/* handle new association with HT and HT information change */
		if ((changed & BSS_CHANGED_HT) &&
		    (bss_conf->channel_type != NL80211_CHAN_NO_HT)) {
3039
			ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055
							     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) {
3056
			ret = wl1271_acx_set_ht_capabilities(wl, &sta_ht_cap,
3057 3058 3059 3060 3061 3062 3063 3064 3065
							     false);
			if (ret < 0) {
				wl1271_warning("Set ht cap false failed %d",
					       ret);
				goto out;
			}
		}
	}

3066
	if ((changed & BSS_CHANGED_ASSOC)) {
L
Luciano Coelho 已提交
3067
		if (bss_conf->assoc) {
3068
			u32 rates;
3069
			int ieoffset;
L
Luciano Coelho 已提交
3070
			wl->aid = bss_conf->aid;
3071
			set_assoc = true;
L
Luciano Coelho 已提交
3072

3073 3074
			wl->ps_poll_failures = 0;

3075 3076 3077 3078 3079 3080 3081
			/*
			 * 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
3082
			wl->basic_rate = wl1271_tx_min_rate_get(wl);
3083 3084 3085
			if (sta_rate_set)
				wl->rate_set = wl1271_tx_enabled_rates_get(wl,
								sta_rate_set);
3086
			ret = wl1271_acx_sta_rate_policies(wl);
3087
			if (ret < 0)
3088
				goto out;
3089

3090 3091 3092 3093 3094 3095
			/*
			 * 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
3096 3097
			ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
			if (ret < 0)
3098
				goto out;
L
Luciano Coelho 已提交
3099

3100
			/*
3101
			 * Get a template for hardware connection maintenance
3102
			 */
3103 3104 3105 3106 3107
			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);
3108

3109 3110
			/* enable the connection monitoring feature */
			ret = wl1271_acx_conn_monit_params(wl, true);
L
Luciano Coelho 已提交
3111
			if (ret < 0)
3112
				goto out;
L
Luciano Coelho 已提交
3113 3114

			/* If we want to go in PSM but we're not there yet */
3115 3116
			if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
			    !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
3117 3118
				enum wl1271_cmd_ps_mode mode;

L
Luciano Coelho 已提交
3119
				mode = STATION_POWER_SAVE_MODE;
3120
				ret = wl1271_ps_set_mode(wl, mode,
3121
							 wl->basic_rate,
3122
							 true);
L
Luciano Coelho 已提交
3123
				if (ret < 0)
3124
					goto out;
L
Luciano Coelho 已提交
3125
			}
J
Juuso Oikarinen 已提交
3126 3127
		} else {
			/* use defaults when not associated */
3128 3129 3130
			bool was_assoc =
			    !!test_and_clear_bit(WL1271_FLAG_STA_ASSOCIATED,
						 &wl->flags);
3131
			clear_bit(WL1271_FLAG_STA_STATE_SENT, &wl->flags);
J
Juuso Oikarinen 已提交
3132
			wl->aid = 0;
3133

3134 3135 3136 3137
			/* free probe-request template */
			dev_kfree_skb(wl->probereq);
			wl->probereq = NULL;

3138
			/* re-enable dynamic ps - just in case */
3139
			ieee80211_enable_dyn_ps(wl->vif);
3140

3141 3142
			/* revert back to minimum rates for the current band */
			wl1271_set_band_rate(wl);
A
Arik Nemtsov 已提交
3143
			wl->basic_rate = wl1271_tx_min_rate_get(wl);
3144
			ret = wl1271_acx_sta_rate_policies(wl);
3145
			if (ret < 0)
3146
				goto out;
3147

3148 3149
			/* disable connection monitor features */
			ret = wl1271_acx_conn_monit_params(wl, false);
3150 3151 3152

			/* Disable the keep-alive feature */
			ret = wl1271_acx_keep_alive_mode(wl, false);
3153
			if (ret < 0)
3154
				goto out;
3155 3156

			/* restore the bssid filter and go to dummy bssid */
3157 3158 3159 3160
			if (was_assoc) {
				wl1271_unjoin(wl);
				wl1271_dummy_join(wl);
			}
L
Luciano Coelho 已提交
3161 3162 3163
		}
	}

3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181
	if (changed & BSS_CHANGED_IBSS) {
		wl1271_debug(DEBUG_ADHOC, "ibss_joined: %d",
			     bss_conf->ibss_joined);

		if (bss_conf->ibss_joined) {
			u32 rates = bss_conf->basic_rates;
			wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
									 rates);
			wl->basic_rate = wl1271_tx_min_rate_get(wl);

			/* by default, use 11b rates */
			wl->rate_set = CONF_TX_IBSS_DEFAULT_RATES;
			ret = wl1271_acx_sta_rate_policies(wl);
			if (ret < 0)
				goto out;
		}
	}

3182 3183 3184
	ret = wl1271_bss_erp_info_changed(wl, bss_conf, changed);
	if (ret < 0)
		goto out;
L
Luciano Coelho 已提交
3185

3186 3187 3188 3189
	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
3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200
		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);
3201
				goto out;
E
Eliad Peller 已提交
3202 3203 3204
			}

			ret = wl1271_acx_arp_ip_filter(wl,
E
Eliad Peller 已提交
3205
				ACX_ARP_FILTER_ARP_FILTERING,
E
Eliad Peller 已提交
3206 3207 3208
				addr);
		} else
			ret = wl1271_acx_arp_ip_filter(wl, 0, addr);
3209 3210

		if (ret < 0)
3211
			goto out;
3212 3213
	}

J
Juuso Oikarinen 已提交
3214
	if (do_join) {
3215
		ret = wl1271_join(wl, set_assoc);
J
Juuso Oikarinen 已提交
3216 3217
		if (ret < 0) {
			wl1271_warning("cmd join failed %d", ret);
3218
			goto out;
J
Juuso Oikarinen 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
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;

3243
	ret = wl1271_ps_elp_wakeup(wl);
3244 3245 3246 3247 3248 3249 3250 3251
	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
3252 3253 3254 3255 3256 3257
	wl1271_ps_elp_sleep(wl);

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

K
Kalle Valo 已提交
3258 3259 3260 3261
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
3262
	u8 ps_scheme;
3263
	int ret = 0;
K
Kalle Valo 已提交
3264 3265 3266 3267 3268

	mutex_lock(&wl->mutex);

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

K
Kalle Valo 已提交
3269 3270 3271 3272 3273
	if (params->uapsd)
		ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
	else
		ps_scheme = CONF_PS_SCHEME_LEGACY;

3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296
	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;
3297 3298
		goto out;
	}
3299

3300 3301 3302
	ret = wl1271_ps_elp_wakeup(wl);
	if (ret < 0)
		goto out;
3303

3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318
	/*
	 * 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
3319 3320

out_sleep:
3321
	wl1271_ps_elp_sleep(wl);
K
Kalle Valo 已提交
3322 3323 3324 3325 3326 3327 3328

out:
	mutex_unlock(&wl->mutex);

	return ret;
}

J
Juuso Oikarinen 已提交
3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339
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);

3340 3341 3342
	if (unlikely(wl->state == WL1271_STATE_OFF))
		goto out;

3343
	ret = wl1271_ps_elp_wakeup(wl);
J
Juuso Oikarinen 已提交
3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357
	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
3358

3359 3360 3361 3362 3363
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;
3364

3365 3366
	if (idx != 0)
		return -ENOENT;
3367

3368 3369 3370
	survey->channel = conf->channel;
	survey->filled = SURVEY_INFO_NOISE_DBM;
	survey->noise = wl->noise;
3371

3372 3373 3374
	return 0;
}

3375
static int wl1271_allocate_sta(struct wl1271 *wl,
3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391
			     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;
3392
	memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
3393 3394 3395
	return 0;
}

3396
static void wl1271_free_sta(struct wl1271 *wl, u8 hlid)
3397 3398 3399
{
	int id = hlid - WL1271_AP_STA_HLID_START;

3400 3401 3402
	if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
		return;

3403
	__clear_bit(id, wl->ap_hlid_map);
3404
	memset(wl->links[hlid].addr, 0, ETH_ALEN);
3405
	wl1271_tx_reset_link_queues(wl, hlid);
3406 3407
	__clear_bit(hlid, &wl->ap_ps_map);
	__clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427
}

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);

3428
	ret = wl1271_allocate_sta(wl, sta, &hlid);
3429 3430 3431
	if (ret < 0)
		goto out;

3432
	ret = wl1271_ps_elp_wakeup(wl);
3433
	if (ret < 0)
3434
		goto out_free_sta;
3435 3436 3437 3438 3439 3440 3441 3442

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

out_sleep:
	wl1271_ps_elp_sleep(wl);

3443 3444 3445 3446
out_free_sta:
	if (ret < 0)
		wl1271_free_sta(wl, hlid);

3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474
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;

3475
	ret = wl1271_ps_elp_wakeup(wl);
3476 3477 3478 3479 3480 3481 3482
	if (ret < 0)
		goto out;

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

3483
	wl1271_free_sta(wl, wl_sta->hlid);
3484 3485 3486 3487 3488 3489 3490 3491 3492

out_sleep:
	wl1271_ps_elp_sleep(wl);

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

3493 3494 3495 3496 3497
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
3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508
{
	struct wl1271 *wl = hw->priv;
	int ret;

	mutex_lock(&wl->mutex);

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

3509
	ret = wl1271_ps_elp_wakeup(wl);
L
Levi, Shahar 已提交
3510 3511 3512
	if (ret < 0)
		goto out;

3513 3514 3515
	wl1271_debug(DEBUG_MAC80211, "mac80211 ampdu: Rx tid %d action %d",
		     tid, action);

L
Levi, Shahar 已提交
3516 3517
	switch (action) {
	case IEEE80211_AMPDU_RX_START:
3518
		if ((wl->ba_support) && (wl->ba_allowed)) {
L
Levi, Shahar 已提交
3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556
			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;
}

3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578
static bool wl1271_tx_frames_pending(struct ieee80211_hw *hw)
{
	struct wl1271 *wl = hw->priv;
	bool ret = false;

	mutex_lock(&wl->mutex);

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

	/* packets are considered pending if in the TX queue or the FW */
	ret = (wl->tx_queue_count > 0) || (wl->tx_frames_cnt > 0);

	/* the above is appropriate for STA mode for PS purposes */
	WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);

out:
	mutex_unlock(&wl->mutex);

	return ret;
}

L
Luciano Coelho 已提交
3579 3580 3581
/* can't be const, mac80211 writes to this */
static struct ieee80211_rate wl1271_rates[] = {
	{ .bitrate = 10,
3582 3583
	  .hw_value = CONF_HW_BIT_RATE_1MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
L
Luciano Coelho 已提交
3584
	{ .bitrate = 20,
3585 3586
	  .hw_value = CONF_HW_BIT_RATE_2MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
L
Luciano Coelho 已提交
3587 3588
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 55,
3589 3590
	  .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
L
Luciano Coelho 已提交
3591 3592
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 110,
3593 3594
	  .hw_value = CONF_HW_BIT_RATE_11MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
L
Luciano Coelho 已提交
3595 3596
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 60,
3597 3598
	  .hw_value = CONF_HW_BIT_RATE_6MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
L
Luciano Coelho 已提交
3599
	{ .bitrate = 90,
3600 3601
	  .hw_value = CONF_HW_BIT_RATE_9MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
L
Luciano Coelho 已提交
3602
	{ .bitrate = 120,
3603 3604
	  .hw_value = CONF_HW_BIT_RATE_12MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
L
Luciano Coelho 已提交
3605
	{ .bitrate = 180,
3606 3607
	  .hw_value = CONF_HW_BIT_RATE_18MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
L
Luciano Coelho 已提交
3608
	{ .bitrate = 240,
3609 3610
	  .hw_value = CONF_HW_BIT_RATE_24MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
L
Luciano Coelho 已提交
3611
	{ .bitrate = 360,
3612 3613
	 .hw_value = CONF_HW_BIT_RATE_36MBPS,
	 .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
L
Luciano Coelho 已提交
3614
	{ .bitrate = 480,
3615 3616
	  .hw_value = CONF_HW_BIT_RATE_48MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
L
Luciano Coelho 已提交
3617
	{ .bitrate = 540,
3618 3619
	  .hw_value = CONF_HW_BIT_RATE_54MBPS,
	  .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
L
Luciano Coelho 已提交
3620 3621
};

3622
/* can't be const, mac80211 writes to this */
L
Luciano Coelho 已提交
3623
static struct ieee80211_channel wl1271_channels[] = {
3624
	{ .hw_value = 1, .center_freq = 2412, .max_power = 25 },
3625
	{ .hw_value = 2, .center_freq = 2417, .max_power = 25 },
3626 3627 3628
	{ .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 },
3629
	{ .hw_value = 6, .center_freq = 2437, .max_power = 25 },
3630 3631 3632
	{ .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 },
3633
	{ .hw_value = 10, .center_freq = 2457, .max_power = 25 },
3634 3635 3636
	{ .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 },
3637
	{ .hw_value = 14, .center_freq = 2484, .max_power = 25 },
L
Luciano Coelho 已提交
3638 3639
};

3640
/* mapping to indexes for wl1271_rates */
3641
static const u8 wl1271_rate_to_idx_2ghz[] = {
3642
	/* MCS rates are used only with 11n */
3643 3644 3645 3646 3647 3648 3649 3650
	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 */
3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669

	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
3670 3671 3672
/* 11n STA capabilities */
#define HW_RX_HIGHEST_RATE	72

S
Shahar Levi 已提交
3673 3674
#ifdef CONFIG_WL12XX_HT
#define WL12XX_HT_CAP { \
3675 3676
	.cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | \
	       (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT), \
S
Shahar Levi 已提交
3677 3678 3679 3680 3681 3682 3683 3684 3685
	.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, \
		}, \
}
3686
#else
S
Shahar Levi 已提交
3687
#define WL12XX_HT_CAP { \
3688 3689 3690
	.ht_supported = false, \
}
#endif
S
Shahar Levi 已提交
3691

L
Luciano Coelho 已提交
3692 3693 3694 3695 3696 3697
/* 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
3698
	.ht_cap	= WL12XX_HT_CAP,
L
Luciano Coelho 已提交
3699 3700
};

3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728
/* 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, },
};

3729
/* 5 GHz band channels for WL1273 */
3730
static struct ieee80211_channel wl1271_channels_5ghz[] = {
3731
	{ .hw_value = 7, .center_freq = 5035},
3732 3733 3734 3735
	{ .hw_value = 8, .center_freq = 5040},
	{ .hw_value = 9, .center_freq = 5045},
	{ .hw_value = 11, .center_freq = 5055},
	{ .hw_value = 12, .center_freq = 5060},
3736
	{ .hw_value = 16, .center_freq = 5080},
3737 3738 3739 3740
	{ .hw_value = 34, .center_freq = 5170},
	{ .hw_value = 36, .center_freq = 5180},
	{ .hw_value = 38, .center_freq = 5190},
	{ .hw_value = 40, .center_freq = 5200},
3741
	{ .hw_value = 42, .center_freq = 5210},
3742 3743 3744 3745
	{ .hw_value = 44, .center_freq = 5220},
	{ .hw_value = 46, .center_freq = 5230},
	{ .hw_value = 48, .center_freq = 5240},
	{ .hw_value = 52, .center_freq = 5260},
3746
	{ .hw_value = 56, .center_freq = 5280},
3747 3748 3749 3750
	{ .hw_value = 60, .center_freq = 5300},
	{ .hw_value = 64, .center_freq = 5320},
	{ .hw_value = 100, .center_freq = 5500},
	{ .hw_value = 104, .center_freq = 5520},
3751
	{ .hw_value = 108, .center_freq = 5540},
3752 3753 3754 3755
	{ .hw_value = 112, .center_freq = 5560},
	{ .hw_value = 116, .center_freq = 5580},
	{ .hw_value = 120, .center_freq = 5600},
	{ .hw_value = 124, .center_freq = 5620},
3756
	{ .hw_value = 128, .center_freq = 5640},
3757 3758 3759 3760
	{ .hw_value = 132, .center_freq = 5660},
	{ .hw_value = 136, .center_freq = 5680},
	{ .hw_value = 140, .center_freq = 5700},
	{ .hw_value = 149, .center_freq = 5745},
3761
	{ .hw_value = 153, .center_freq = 5765},
3762 3763
	{ .hw_value = 157, .center_freq = 5785},
	{ .hw_value = 161, .center_freq = 5805},
3764 3765 3766
	{ .hw_value = 165, .center_freq = 5825},
};

3767
/* mapping to indexes for wl1271_rates_5ghz */
3768
static const u8 wl1271_rate_to_idx_5ghz[] = {
3769
	/* MCS rates are used only with 11n */
3770 3771 3772 3773 3774 3775 3776 3777
	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 */
3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795

	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    */
};
3796 3797 3798 3799 3800 3801

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
3802
	.ht_cap	= WL12XX_HT_CAP,
3803 3804
};

3805
static const u8 *wl1271_band_rate_to_idx[] = {
3806 3807 3808 3809
	[IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
	[IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
};

L
Luciano Coelho 已提交
3810 3811 3812 3813 3814
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,
3815
#ifdef CONFIG_PM
3816 3817
	.suspend = wl1271_op_suspend,
	.resume = wl1271_op_resume,
3818
#endif
L
Luciano Coelho 已提交
3819
	.config = wl1271_op_config,
3820
	.prepare_multicast = wl1271_op_prepare_multicast,
L
Luciano Coelho 已提交
3821 3822 3823 3824
	.configure_filter = wl1271_op_configure_filter,
	.tx = wl1271_op_tx,
	.set_key = wl1271_op_set_key,
	.hw_scan = wl1271_op_hw_scan,
3825 3826
	.sched_scan_start = wl1271_op_sched_scan_start,
	.sched_scan_stop = wl1271_op_sched_scan_stop,
L
Luciano Coelho 已提交
3827
	.bss_info_changed = wl1271_op_bss_info_changed,
3828
	.set_frag_threshold = wl1271_op_set_frag_threshold,
L
Luciano Coelho 已提交
3829
	.set_rts_threshold = wl1271_op_set_rts_threshold,
K
Kalle Valo 已提交
3830
	.conf_tx = wl1271_op_conf_tx,
J
Juuso Oikarinen 已提交
3831
	.get_tsf = wl1271_op_get_tsf,
3832
	.get_survey = wl1271_op_get_survey,
3833 3834
	.sta_add = wl1271_op_sta_add,
	.sta_remove = wl1271_op_sta_remove,
L
Levi, Shahar 已提交
3835
	.ampdu_action = wl1271_op_ampdu_action,
3836
	.tx_frames_pending = wl1271_tx_frames_pending,
K
Kalle Valo 已提交
3837
	CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
L
Luciano Coelho 已提交
3838 3839
};

3840

3841
u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band)
3842 3843 3844
{
	u8 idx;

3845
	BUG_ON(band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
3846 3847 3848 3849 3850 3851

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

3852
	idx = wl1271_band_rate_to_idx[band][rate];
3853 3854 3855 3856 3857 3858 3859 3860
	if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
		wl1271_error("Unsupported RX rate from HW: %d", rate);
		return 0;
	}

	return idx;
}

3861 3862 3863 3864 3865 3866 3867
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;

3868
	len = PAGE_SIZE;
3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886

	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
3887
	ret = kstrtoul(buf, 10, &res);
3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904
	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;

3905
	ret = wl1271_ps_elp_wakeup(wl);
3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920
	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);

3921 3922 3923 3924 3925 3926 3927
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;

3928
	len = PAGE_SIZE;
3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942

	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);

3943
int wl1271_register_hw(struct wl1271 *wl)
L
Luciano Coelho 已提交
3944 3945 3946 3947 3948 3949
{
	int ret;

	if (wl->mac80211_registered)
		return 0;

3950 3951
	ret = wl1271_fetch_nvs(wl);
	if (ret == 0) {
3952 3953 3954 3955 3956
		/* 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;
3957 3958 3959 3960 3961 3962 3963 3964 3965

		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
3966 3967 3968 3969 3970 3971 3972 3973 3974 3975
	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;

3976 3977
	wl1271_debugfs_init(wl);

3978 3979
	register_netdevice_notifier(&wl1271_dev_notifier);

L
Luciano Coelho 已提交
3980 3981 3982 3983
	wl1271_notice("loaded");

	return 0;
}
3984
EXPORT_SYMBOL_GPL(wl1271_register_hw);
L
Luciano Coelho 已提交
3985

3986 3987
void wl1271_unregister_hw(struct wl1271 *wl)
{
3988 3989 3990
	if (wl->state == WL1271_STATE_PLT)
		__wl1271_plt_stop(wl);

3991
	unregister_netdevice_notifier(&wl1271_dev_notifier);
3992 3993 3994 3995 3996 3997
	ieee80211_unregister_hw(wl->hw);
	wl->mac80211_registered = false;

}
EXPORT_SYMBOL_GPL(wl1271_unregister_hw);

3998
int wl1271_init_ieee80211(struct wl1271 *wl)
L
Luciano Coelho 已提交
3999
{
4000 4001 4002 4003 4004 4005 4006 4007
	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,
	};

4008 4009 4010
	/* 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
4011 4012 4013 4014

	/* unit us */
	/* FIXME: find a proper value */
	wl->hw->channel_change_time = 10000;
4015
	wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
L
Luciano Coelho 已提交
4016 4017

	wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
4018
		IEEE80211_HW_BEACON_FILTER |
4019
		IEEE80211_HW_SUPPORTS_PS |
K
Kalle Valo 已提交
4020
		IEEE80211_HW_SUPPORTS_UAPSD |
4021
		IEEE80211_HW_HAS_RATE_CONTROL |
4022
		IEEE80211_HW_CONNECTION_MONITOR |
4023
		IEEE80211_HW_SUPPORTS_CQM_RSSI |
4024
		IEEE80211_HW_REPORTS_TX_ACK_STATUS |
4025
		IEEE80211_HW_SPECTRUM_MGMT |
4026
		IEEE80211_HW_AP_LINK_PS;
L
Luciano Coelho 已提交
4027

4028 4029 4030
	wl->hw->wiphy->cipher_suites = cipher_suites;
	wl->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);

4031
	wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
A
Arik Nemtsov 已提交
4032
		BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
L
Luciano Coelho 已提交
4033
	wl->hw->wiphy->max_scan_ssids = 1;
4034 4035 4036 4037 4038 4039 4040
	/*
	 * 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);
4041

4042 4043 4044 4045
	/* 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);
4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058
	/*
	 * 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];
4059

K
Kalle Valo 已提交
4060
	wl->hw->queues = 4;
J
Juuso Oikarinen 已提交
4061
	wl->hw->max_rates = 1;
K
Kalle Valo 已提交
4062

4063 4064
	wl->hw->wiphy->reg_notifier = wl1271_reg_notify;

4065
	SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
L
Luciano Coelho 已提交
4066

4067 4068
	wl->hw->sta_data_size = sizeof(struct wl1271_station);

4069 4070
	wl->hw->max_rx_aggregation_subframes = 8;

L
Luciano Coelho 已提交
4071 4072
	return 0;
}
4073
EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
L
Luciano Coelho 已提交
4074 4075

#define WL1271_DEFAULT_CHANNEL 0
4076

4077
struct ieee80211_hw *wl1271_alloc_hw(void)
L
Luciano Coelho 已提交
4078 4079
{
	struct ieee80211_hw *hw;
4080
	struct platform_device *plat_dev = NULL;
L
Luciano Coelho 已提交
4081
	struct wl1271 *wl;
4082
	int i, j, ret;
4083
	unsigned int order;
L
Luciano Coelho 已提交
4084 4085 4086 4087

	hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
	if (!hw) {
		wl1271_error("could not alloc ieee80211_hw");
4088
		ret = -ENOMEM;
4089 4090 4091
		goto err_hw_alloc;
	}

4092
	plat_dev = kmemdup(&wl1271_device, sizeof(wl1271_device), GFP_KERNEL);
4093 4094 4095 4096
	if (!plat_dev) {
		wl1271_error("could not allocate platform_device");
		ret = -ENOMEM;
		goto err_plat_alloc;
L
Luciano Coelho 已提交
4097 4098 4099 4100 4101
	}

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

4102 4103
	INIT_LIST_HEAD(&wl->list);

L
Luciano Coelho 已提交
4104
	wl->hw = hw;
4105
	wl->plat_dev = plat_dev;
L
Luciano Coelho 已提交
4106

4107 4108
	for (i = 0; i < NUM_TX_QUEUES; i++)
		skb_queue_head_init(&wl->tx_queue[i]);
L
Luciano Coelho 已提交
4109

4110 4111 4112 4113
	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]);

4114 4115 4116
	skb_queue_head_init(&wl->deferred_rx_queue);
	skb_queue_head_init(&wl->deferred_tx_queue);

4117
	INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
4118
	INIT_DELAYED_WORK(&wl->pspoll_work, wl1271_pspoll_work);
4119
	INIT_WORK(&wl->netstack_work, wl1271_netstack_work);
4120 4121 4122
	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);
4123 4124 4125 4126 4127
	INIT_WORK(&wl->rx_streaming_enable_work,
		  wl1271_rx_streaming_enable_work);
	INIT_WORK(&wl->rx_streaming_disable_work,
		  wl1271_rx_streaming_disable_work);

L
Luciano Coelho 已提交
4128
	wl->channel = WL1271_DEFAULT_CHANNEL;
4129
	wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
L
Luciano Coelho 已提交
4130 4131
	wl->default_key = 0;
	wl->rx_counter = 0;
4132 4133
	wl->rx_config = WL1271_DEFAULT_STA_RX_CONFIG;
	wl->rx_filter = WL1271_DEFAULT_STA_RX_FILTER;
4134
	wl->psm_entry_retry = 0;
L
Luciano Coelho 已提交
4135
	wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
4136
	wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
4137
	wl->basic_rate = CONF_TX_RATE_MASK_BASIC;
4138
	wl->rate_set = CONF_TX_RATE_MASK_BASIC;
4139
	wl->band = IEEE80211_BAND_2GHZ;
4140
	wl->vif = NULL;
4141
	wl->flags = 0;
4142
	wl->sg_enabled = true;
4143
	wl->hw_pg_ver = -1;
4144 4145 4146
	wl->bss_type = MAX_BSS_TYPE;
	wl->set_bss_type = MAX_BSS_TYPE;
	wl->fw_bss_type = MAX_BSS_TYPE;
4147
	wl->last_tx_hlid = 0;
4148 4149
	wl->ap_ps_map = 0;
	wl->ap_fw_ps_map = 0;
4150
	wl->quirks = 0;
4151
	wl->platform_quirks = 0;
4152
	wl->sched_scanning = false;
4153 4154
	setup_timer(&wl->rx_streaming_timer, wl1271_rx_streaming_timer,
		    (unsigned long) wl);
L
Luciano Coelho 已提交
4155

4156
	memset(wl->tx_frames_map, 0, sizeof(wl->tx_frames_map));
J
Juuso Oikarinen 已提交
4157
	for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
L
Luciano Coelho 已提交
4158 4159 4160 4161 4162 4163 4164
		wl->tx_frames[i] = NULL;

	spin_lock_init(&wl->wl_lock);

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

4165 4166 4167
	/* Apply default driver configuration. */
	wl1271_conf_init(wl);

4168 4169 4170 4171 4172 4173 4174
	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;
	}

4175 4176 4177 4178 4179 4180
	wl->dummy_packet = wl12xx_alloc_dummy_packet(wl);
	if (!wl->dummy_packet) {
		ret = -ENOMEM;
		goto err_aggr;
	}

4181
	/* Register platform device */
4182
	ret = platform_device_register(wl->plat_dev);
4183 4184
	if (ret) {
		wl1271_error("couldn't register platform device");
4185
		goto err_dummy_packet;
4186
	}
4187
	dev_set_drvdata(&wl->plat_dev->dev, wl);
4188

4189
	/* Create sysfs file to control bt coex state */
4190
	ret = device_create_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
4191 4192 4193 4194
	if (ret < 0) {
		wl1271_error("failed to create sysfs file bt_coex_state");
		goto err_platform;
	}
4195

4196 4197 4198 4199 4200 4201 4202
	/* 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;
	}

4203
	return hw;
4204

4205 4206 4207
err_bt_coex_state:
	device_remove_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);

4208
err_platform:
4209
	platform_device_unregister(wl->plat_dev);
4210

4211 4212 4213
err_dummy_packet:
	dev_kfree_skb(wl->dummy_packet);

4214 4215 4216
err_aggr:
	free_pages((unsigned long)wl->aggr_buf, order);

4217
err_hw:
4218 4219 4220 4221 4222 4223 4224
	wl1271_debugfs_exit(wl);
	kfree(plat_dev);

err_plat_alloc:
	ieee80211_free_hw(hw);

err_hw_alloc:
4225 4226

	return ERR_PTR(ret);
4227
}
4228
EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
4229 4230 4231

int wl1271_free_hw(struct wl1271 *wl)
{
4232
	platform_device_unregister(wl->plat_dev);
4233
	dev_kfree_skb(wl->dummy_packet);
4234 4235
	free_pages((unsigned long)wl->aggr_buf,
			get_order(WL1271_AGGR_BUFFER_SIZE));
4236
	kfree(wl->plat_dev);
4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251

	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;
}
4252 4253
EXPORT_SYMBOL_GPL(wl1271_free_hw);

4254
u32 wl12xx_debug_level = DEBUG_NONE;
4255
EXPORT_SYMBOL_GPL(wl12xx_debug_level);
4256
module_param_named(debug_level, wl12xx_debug_level, uint, S_IRUSR | S_IWUSR);
4257 4258
MODULE_PARM_DESC(debug_level, "wl12xx debugging level");

4259
MODULE_LICENSE("GPL");
4260
MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
4261
MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");