ipw2200.c

和我之前上载的intel 802.11协议源码是配套的

	if (priv->config & CFG_NO_LED)
		return;

	spin_lock_irqsave(&priv->lock, flags);

	if (priv->status & STATUS_LED_ACT_ON) {
		led = ipw_read_reg32(priv, IPW_EVENT_REG);
		led &= priv->led_activity_off;

		led = ipw_register_toggle(led);

		IPW_DEBUG_LED("Reg: 0x%08X\n", led);
		ipw_write_reg32(priv, IPW_EVENT_REG, led);

		IPW_DEBUG_LED("Activity LED Off\n");

		priv->status &= ~STATUS_LED_ACT_ON;
	}

	spin_unlock_irqrestore(&priv->lock, flags);
}

static void ipw_bg_led_activity_off(void *data)
{
	struct ipw_priv *priv = data;
	mutex_lock(&priv->mutex);
	ipw_led_activity_off(data);
	mutex_unlock(&priv->mutex);
}

static void ipw_led_band_on(struct ipw_priv *priv)
{
	unsigned long flags;
	u32 led;

	/* Only nic type 1 supports mode LEDs */
	if (priv->config & CFG_NO_LED ||
	    priv->nic_type != EEPROM_NIC_TYPE_1 || !priv->assoc_network)
		return;

	spin_lock_irqsave(&priv->lock, flags);

	led = ipw_read_reg32(priv, IPW_EVENT_REG);
	if (priv->assoc_network->mode == IEEE_A) {
		led |= priv->led_ofdm_on;
		led &= priv->led_association_off;
		IPW_DEBUG_LED("Mode LED On: 802.11a\n");
	} else if (priv->assoc_network->mode == IEEE_G) {
		led |= priv->led_ofdm_on;
		led |= priv->led_association_on;
		IPW_DEBUG_LED("Mode LED On: 802.11g\n");
	} else {
		led &= priv->led_ofdm_off;
		led |= priv->led_association_on;
		IPW_DEBUG_LED("Mode LED On: 802.11b\n");
	}

	led = ipw_register_toggle(led);

	IPW_DEBUG_LED("Reg: 0x%08X\n", led);
	ipw_write_reg32(priv, IPW_EVENT_REG, led);

	spin_unlock_irqrestore(&priv->lock, flags);
}

static void ipw_led_band_off(struct ipw_priv *priv)
{
	unsigned long flags;
	u32 led;

	/* Only nic type 1 supports mode LEDs */
	if (priv->config & CFG_NO_LED || priv->nic_type != EEPROM_NIC_TYPE_1)
		return;

	spin_lock_irqsave(&priv->lock, flags);

	led = ipw_read_reg32(priv, IPW_EVENT_REG);
	led &= priv->led_ofdm_off;
	led &= priv->led_association_off;

	led = ipw_register_toggle(led);

	IPW_DEBUG_LED("Reg: 0x%08X\n", led);
	ipw_write_reg32(priv, IPW_EVENT_REG, led);

	spin_unlock_irqrestore(&priv->lock, flags);
}

static void ipw_led_radio_on(struct ipw_priv *priv)
{
	ipw_led_link_on(priv);
}

static void ipw_led_radio_off(struct ipw_priv *priv)
{
	ipw_led_activity_off(priv);
	ipw_led_link_off(priv);
}

static void ipw_led_link_up(struct ipw_priv *priv)
{
	/* Set the Link Led on for all nic types */
	ipw_led_link_on(priv);
}

static void ipw_led_link_down(struct ipw_priv *priv)
{
	ipw_led_activity_off(priv);
	ipw_led_link_off(priv);

	if (priv->status & STATUS_RF_KILL_MASK)
		ipw_led_radio_off(priv);
}

static void ipw_led_init(struct ipw_priv *priv)
{
	priv->nic_type = priv->eeprom[EEPROM_NIC_TYPE];

	/* Set the default PINs for the link and activity leds */
	priv->led_activity_on = IPW_ACTIVITY_LED;
	priv->led_activity_off = ~(IPW_ACTIVITY_LED);

	priv->led_association_on = IPW_ASSOCIATED_LED;
	priv->led_association_off = ~(IPW_ASSOCIATED_LED);

	/* Set the default PINs for the OFDM leds */
	priv->led_ofdm_on = IPW_OFDM_LED;
	priv->led_ofdm_off = ~(IPW_OFDM_LED);

	switch (priv->nic_type) {
	case EEPROM_NIC_TYPE_1:
		/* In this NIC type, the LEDs are reversed.... */
		priv->led_activity_on = IPW_ASSOCIATED_LED;
		priv->led_activity_off = ~(IPW_ASSOCIATED_LED);
		priv->led_association_on = IPW_ACTIVITY_LED;
		priv->led_association_off = ~(IPW_ACTIVITY_LED);

		if (!(priv->config & CFG_NO_LED))
			ipw_led_band_on(priv);

		/* And we don't blink link LEDs for this nic, so
		 * just return here */
		return;

	case EEPROM_NIC_TYPE_3:
	case EEPROM_NIC_TYPE_2:
	case EEPROM_NIC_TYPE_4:
	case EEPROM_NIC_TYPE_0:
		break;

	default:
		IPW_DEBUG_INFO("Unknown NIC type from EEPROM: %d\n",
			       priv->nic_type);
		priv->nic_type = EEPROM_NIC_TYPE_0;
		break;
	}

	if (!(priv->config & CFG_NO_LED)) {
		if (priv->status & STATUS_ASSOCIATED)
			ipw_led_link_on(priv);
		else
			ipw_led_link_off(priv);
	}
}

static void ipw_led_shutdown(struct ipw_priv *priv)
{
	ipw_led_activity_off(priv);
	ipw_led_link_off(priv);
	ipw_led_band_off(priv);
	cancel_delayed_work(&priv->led_link_on);
	cancel_delayed_work(&priv->led_link_off);
	cancel_delayed_work(&priv->led_act_off);
}

/*
 * The following adds a new attribute to the sysfs representation
 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/ipw/)
 * used for controling the debug level.
 *
 * See the level definitions in ipw for details.
 */
static ssize_t show_debug_level(struct device_driver *d, char *buf)
{
	return sprintf(buf, "0x%08X\n", ipw_debug_level);
}

static ssize_t store_debug_level(struct device_driver *d, const char *buf,
				 size_t count)
{
	char *p = (char *)buf;
	u32 val;

	if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
		p++;
		if (p[0] == 'x' || p[0] == 'X')
			p++;
		val = simple_strtoul(p, &p, 16);
	} else
		val = simple_strtoul(p, &p, 10);
	if (p == buf)
		printk(KERN_INFO DRV_NAME
		       ": %s is not in hex or decimal form.\n", buf);
	else
		ipw_debug_level = val;

	return strnlen(buf, count);
}

static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
		   show_debug_level, store_debug_level);

static inline u32 ipw_get_event_log_len(struct ipw_priv *priv)
{
	/* length = 1st dword in log */
	return ipw_read_reg32(priv, ipw_read32(priv, IPW_EVENT_LOG));
}

static void ipw_capture_event_log(struct ipw_priv *priv,
				  u32 log_len, struct ipw_event *log)
{
	u32 base;

	if (log_len) {
		base = ipw_read32(priv, IPW_EVENT_LOG);
		ipw_read_indirect(priv, base + sizeof(base) + sizeof(u32),
				  (u8 *) log, sizeof(*log) * log_len);
	}
}

static struct ipw_fw_error *ipw_alloc_error_log(struct ipw_priv *priv)
{
	struct ipw_fw_error *error;
	u32 log_len = ipw_get_event_log_len(priv);
	u32 base = ipw_read32(priv, IPW_ERROR_LOG);
	u32 elem_len = ipw_read_reg32(priv, base);

	error = kmalloc(sizeof(*error) +
			sizeof(*error->elem) * elem_len +
			sizeof(*error->log) * log_len, GFP_ATOMIC);
	if (!error) {
		IPW_ERROR("Memory allocation for firmware error log "
			  "failed.\n");
		return NULL;
	}
	error->jiffies = jiffies;
	error->status = priv->status;
	error->config = priv->config;
	error->elem_len = elem_len;
	error->log_len = log_len;
	error->elem = (struct ipw_error_elem *)error->payload;
	error->log = (struct ipw_event *)(error->elem + elem_len);

	ipw_capture_event_log(priv, log_len, error->log);

	if (elem_len)
		ipw_read_indirect(priv, base + sizeof(base), (u8 *) error->elem,
				  sizeof(*error->elem) * elem_len);

	return error;
}

static ssize_t show_event_log(struct device *d,
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,12)
			      struct device_attribute *attr,
#endif
			      char *buf)
{
	struct ipw_priv *priv = dev_get_drvdata(d);
	u32 log_len = ipw_get_event_log_len(priv);
	struct ipw_event log[log_len];
	u32 len = 0, i;

	ipw_capture_event_log(priv, log_len, log);

	len += snprintf(buf + len, PAGE_SIZE - len, "%08X", log_len);
	for (i = 0; i < log_len; i++)
		len += snprintf(buf + len, PAGE_SIZE - len,
				"\n%08X%08X%08X",
				log[i].time, log[i].event, log[i].data);
	len += snprintf(buf + len, PAGE_SIZE - len, "\n");
	return len;
}

static DEVICE_ATTR(event_log, S_IRUGO, show_event_log, NULL);

static ssize_t show_error(struct device *d,
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,12)
			  struct device_attribute *attr,
#endif
			  char *buf)
{
	struct ipw_priv *priv = dev_get_drvdata(d);
	u32 len = 0, i;
	if (!priv->error)
		return 0;
	len += snprintf(buf + len, PAGE_SIZE - len,
			"%08lX%08X%08X%08X",
			priv->error->jiffies,
			priv->error->status,
			priv->error->config, priv->error->elem_len);
	for (i = 0; i < priv->error->elem_len; i++)
		len += snprintf(buf + len, PAGE_SIZE - len,
				"\n%08X%08X%08X%08X%08X%08X%08X",
				priv->error->elem[i].time,
				priv->error->elem[i].desc,
				priv->error->elem[i].blink1,
				priv->error->elem[i].blink2,
				priv->error->elem[i].link1,
				priv->error->elem[i].link2,
				priv->error->elem[i].data);

	len += snprintf(buf + len, PAGE_SIZE - len,
			"\n%08X", priv->error->log_len);
	for (i = 0; i < priv->error->log_len; i++)
		len += snprintf(buf + len, PAGE_SIZE - len,
				"\n%08X%08X%08X",
				priv->error->log[i].time,
				priv->error->log[i].event,
				priv->error->log[i].data);
	len += snprintf(buf + len, PAGE_SIZE - len, "\n");
	return len;
}

static ssize_t clear_error(struct device *d,
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,12)
			   struct device_attribute *attr,
#endif
			   const char *buf, size_t count)
{
	struct ipw_priv *priv = dev_get_drvdata(d);

	kfree(priv->error);
	priv->error = NULL;
	return count;
}

static DEVICE_ATTR(error, S_IRUGO | S_IWUSR, show_error, clear_error);

static ssize_t show_cmd_log(struct device *d,
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,12)
			    struct device_attribute *attr,
#endif
			    char *buf)
{
	struct ipw_priv *priv = dev_get_drvdata(d);
	u32 len = 0, i;
	if (!priv->cmdlog)
		return 0;
	for (i = (priv->cmdlog_pos + 1) % priv->cmdlog_len;
	     (i != priv->cmdlog_pos) && (PAGE_SIZE - len);
	     i = (i + 1) % priv->cmdlog_len) {
		len +=
		    snprintf(buf + len, PAGE_SIZE - len,
			     "\n%08lX%08X%08X%08X\n", priv->cmdlog[i].jiffies,
			     priv->cmdlog[i].retcode, priv->cmdlog[i].cmd.cmd,
			     priv->cmdlog[i].cmd.len);
		len +=
		    snprintk_buf(buf + len, PAGE_SIZE - len,
				 (u8 *) priv->cmdlog[i].cmd.param,
				 priv->cmdlog[i].cmd.len);
		len += snprintf(buf + len, PAGE_SIZE - len, "\n");
	}
	len += snprintf(buf + len, PAGE_SIZE - len, "\n");
	return len;
}

static DEVICE_ATTR(cmd_log, S_IRUGO, show_cmd_log, NULL);

#ifdef CONFIG_IPW2200_PROMISCUOUS
static void ipw_prom_free(struct ipw_priv *priv);
static int ipw_prom_alloc(struct ipw_priv *priv);
static ssize_t store_rtap_iface(struct device *d,
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,12)
				struct device_attribute *attr,
#endif
				const char *buf, size_t count)
{
	struct ipw_priv *priv = dev_get_drvdata(d);
	int rc = 0;

	if (count < 1)
		return -EINVAL;

	switch (buf[0]) {
	case '0':
		if (!rtap_iface)
			return count;

		if (netif_running(priv->prom_net_dev)) {
			IPW_WARNING("Interface is up.  Cannot unregister.\n");
			return count;
		}

		ipw_prom_free(priv);
		rtap_iface = 0;
		break;

	case '1':
		if (rtap_iface)
			return count;

		rc = ipw_prom_alloc(priv);
		if (!rc)
			rtap_iface = 1;
		break;

	default:
		return -EINVAL;
	}

	if (rc) {
		IPW_ERROR("Failed to register promiscuous network "
			  "device (error %d).\n", rc);
	}

	return count;
}

static ssize_t show_rtap_iface(struct device *d,
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,12)
			       struct device_attribute *attr,
#endif
			       char *buf)
{
	struct ipw_priv *priv = dev_get_drvdata(d);
	if (rtap_iface)
		return sprintf(buf, "%s", priv->prom_net_dev->name);
	else {
		buf[0] = '-';
		buf[1] = '1';
		buf[2] = '\0';
		return 3;
	}
}

static DEVICE_ATTR(rtap_iface, S_IWUSR | S_IRUSR, show_rtap_iface,
		   store_rtap_iface);

static ssize_t store_rtap_filter(struct device *d,
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,12)
				 struct device_attribute *attr,
#endif
				 const char *buf, size_t count)
{
	struct ipw_priv *priv = dev_get_drvdata(d);

	if (!priv->prom_priv) {
		IPW_ERROR("Attempting to set filter without "
			  "rtap_iface enabled.\n");
		return -EPERM;
	}

	priv->prom_priv->filter = simple_strtol(buf, NULL, 0);

	IPW_DEBUG_INFO("Setting rtap filter to " BIT_FMT16 "\n",
		       BIT_ARG16(priv->prom_priv->filter));

	return count;
}

static ssize_t show_rtap_filter(struct device *d,
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,12)
				struct device_attribute *attr,
#endif
				char *buf)
{
	struct ipw_priv *priv = dev_get_drvdata(d);
	return sprintf(buf, "0x%04X",
		       priv->prom_priv ? priv->prom_priv->filter : 0);
}

static DEVICE_ATTR(rtap_filter, S_IWUSR | S_IRUSR, show_rtap_filter,
		   store_rtap_filter);
#endif

static ssize_t show_scan_age(struct device *d,
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,12)
			     struct device_attribute *attr,
#endif
			     char *buf)
{
	struct ipw_priv *priv = dev_get_drvdata(d);
	return sprintf(buf, "%d\n", priv->ieee->scan_age);
}