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Commit 810dabd4 authored by Zhu Yi's avatar Zhu Yi Committed by John W. Linville
Browse files

[PATCH] ipw2200: Bluetooth coexistence support 



I've added a new module param "bt_coexist" which defaults to OFF.

This does not seem to fix the firmware restarts, but it does do "the
right thing" and disables something that we were enabling by default:
signaling the Bluetooth h/w which channel we're on (whether or not the
BT h/w was out there).

Signed-off-by: default avatarBen M Cahill <ben.m.cahill@intel.com>
Signed-off-by: default avatarZhu Yi <yi.zhu@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 3e234b4e

drivers/net/wireless/ipw2200.c

+19 −1
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ static int associate = 1; 
static int auto_create = 1;

static int led = 0;

static int disable = 0;

static int bt_coexist = 0;

static int hwcrypto = 1;

static const char ipw_modes[] = {

	'a', 'b', 'g', '?'
@@ -9656,7 +9657,7 @@ static struct iw_statistics *ipw_get_wireless_stats(struct net_device *dev) 
static  void init_sys_config(struct ipw_sys_config *sys_config)

{

	memset(sys_config, 0, sizeof(struct ipw_sys_config));

	sys_config->bt_coexistence = 1;	/* We may need to look into prvStaBtConfig */

	sys_config->bt_coexistence = 0;

	sys_config->answer_broadcast_ssid_probe = 0;

	sys_config->accept_all_data_frames = 0;

	sys_config->accept_non_directed_frames = 1;
@@ -10362,6 +10363,20 @@ static int ipw_config(struct ipw_priv *priv) 


	/* set basic system config settings */

	init_sys_config(&priv->sys_config);



	/* Support Bluetooth if we have BT h/w on board, and user wants to.

	 * Does not support BT priority yet (don't abort or defer our Tx) */

	if (bt_coexist) {

		unsigned char bt_caps = priv->eeprom[EEPROM_SKU_CAPABILITY];	



		if (bt_caps & EEPROM_SKU_CAP_BT_CHANNEL_SIG)

			priv->sys_config.bt_coexistence

				|= CFG_BT_COEXISTENCE_SIGNAL_CHNL;

		if (bt_caps & EEPROM_SKU_CAP_BT_OOB)

			priv->sys_config.bt_coexistence

				|= CFG_BT_COEXISTENCE_OOB;

	}



	if (priv->ieee->iw_mode == IW_MODE_ADHOC)

		priv->sys_config.answer_broadcast_ssid_probe = 1;

	else
@@ -11351,6 +11366,9 @@ module_param(mode, int, 0444); 
MODULE_PARM_DESC(mode, "network mode (0=BSS,1=IBSS)");

#endif



module_param(bt_coexist, int, 0444);

MODULE_PARM_DESC(bt_coexist, "enable bluetooth coexistence (default off)");



module_param(hwcrypto, int, 0444);

MODULE_PARM_DESC(hwcrypto, "enable hardware crypto (default on)");

drivers/net/wireless/ipw2200.h

+21 −14
Original line number Diff line number Diff line
@@ -1573,6 +1573,11 @@ do { if (ipw_debug_level & (level)) \ 
#define EEPROM_NIC_TYPE_3 3

#define EEPROM_NIC_TYPE_4 4



/* Bluetooth Coexistence capabilities as found in EEPROM_SKU_CAPABILITY */

#define EEPROM_SKU_CAP_BT_CHANNEL_SIG  0x01 /* we can tell BT our channel # */

#define EEPROM_SKU_CAP_BT_PRIORITY     0x02 /* BT can take priority over us */

#define EEPROM_SKU_CAP_BT_OOB          0x04 /* we can signal BT out-of-band */



#define FW_MEM_REG_LOWER_BOUND          0x00300000

#define FW_MEM_REG_EEPROM_ACCESS        (FW_MEM_REG_LOWER_BOUND + 0x40)

#define IPW_EVENT_REG                   (FW_MEM_REG_LOWER_BOUND + 0x04)
@@ -1869,21 +1874,23 @@ struct ipw_cmd_log { 
	struct host_cmd cmd;

};



#define CFG_BT_COEXISTENCE_MIN                  0x00

#define CFG_BT_COEXISTENCE_DEFER                0x02

#define CFG_BT_COEXISTENCE_KILL                 0x04

#define CFG_BT_COEXISTENCE_WME_OVER_BT          0x08

#define CFG_BT_COEXISTENCE_OOB                  0x10

#define CFG_BT_COEXISTENCE_MAX                  0xFF

#define CFG_BT_COEXISTENCE_DEF                  0x80	/* read Bt from EEPROM */



#define CFG_CTS_TO_ITSELF_ENABLED_MIN	0x0

#define CFG_CTS_TO_ITSELF_ENABLED_MAX	0x1

/* SysConfig command parameters ... */

/* bt_coexistence param */

#define CFG_BT_COEXISTENCE_SIGNAL_CHNL  0x01 /* tell BT our chnl # */

#define CFG_BT_COEXISTENCE_DEFER        0x02 /* defer our Tx if BT traffic */

#define CFG_BT_COEXISTENCE_KILL         0x04 /* kill our Tx if BT traffic */

#define CFG_BT_COEXISTENCE_WME_OVER_BT  0x08 /* multimedia extensions */

#define CFG_BT_COEXISTENCE_OOB          0x10 /* signal BT via out-of-band */



/* clear-to-send to self param */

#define CFG_CTS_TO_ITSELF_ENABLED_MIN	0x00

#define CFG_CTS_TO_ITSELF_ENABLED_MAX	0x01

#define CFG_CTS_TO_ITSELF_ENABLED_DEF	CFG_CTS_TO_ITSELF_ENABLED_MIN



#define CFG_SYS_ANTENNA_BOTH                      0x000

#define CFG_SYS_ANTENNA_A                         0x001

#define CFG_SYS_ANTENNA_B                         0x003

/* Antenna diversity param (h/w can select best antenna, based on signal) */

#define CFG_SYS_ANTENNA_BOTH            0x00 /* NIC selects best antenna */

#define CFG_SYS_ANTENNA_A               0x01 /* force antenna A */

#define CFG_SYS_ANTENNA_B               0x03 /* force antenna B */



/*

 * The definitions below were lifted off the ipw2100 driver, which only