[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: Ben M Cahill <[EMAIL PROTECTED]>
Signed-off-by: Zhu Yi <[EMAIL PROTECTED]>
---
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -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', '?'
@@ -9653,7 +9659,7 @@ static struct iw_statistics *ipw_get_wir
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;
@@ -10355,6 +10362,20 @@ static int ipw_config(struct ipw_priv *p
/* 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
@@ -11344,6 +11365,9 @@ 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)");
--- a/drivers/net/wireless/ipw2200.h
+++ b/drivers/net/wireless/ipw2200.h
@@ -1566,13 +1566,18 @@ do { if (ipw_debug_level & (level)) \
#define EEPROM_BSS_CHANNELS_BG (GET_EEPROM_ADDR(0x2c,LSB)) /* 2 bytes */
#define EEPROM_HW_VERSION (GET_EEPROM_ADDR(0x72,LSB)) /* 2 bytes */
-/* NIC type as found in the one byte EEPROM_NIC_TYPE offset*/
+/* NIC type as found in the one byte EEPROM_NIC_TYPE offset */
#define EEPROM_NIC_TYPE_0 0
#define EEPROM_NIC_TYPE_1 1
#define EEPROM_NIC_TYPE_2 2
#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
-
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