ipw2200.c

来自「linux 内核源代码」· C语言 代码 · 共 2,382 行 · 第 1/5 页

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, struct device_attribute *attr,
			     char *buf)
{
	struct ipw_priv *priv = dev_get_drvdata(d);
	return sprintf(buf, "%d\n", priv->ieee->scan_age);
}

static ssize_t store_scan_age(struct device *d, struct device_attribute *attr,
			      const char *buf, size_t count)
{
	struct ipw_priv *priv = dev_get_drvdata(d);
	struct net_device *dev = priv->net_dev;
	char buffer[] = "00000000";
	unsigned long len =
	    (sizeof(buffer) - 1) > count ? count : sizeof(buffer) - 1;
	unsigned long val;
	char *p = buffer;

	IPW_DEBUG_INFO("enter\n");

	strncpy(buffer, buf, len);
	buffer[len] = 0;

	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 == buffer) {
		IPW_DEBUG_INFO("%s: user supplied invalid value.\n", dev->name);
	} else {
		priv->ieee->scan_age = val;
		IPW_DEBUG_INFO("set scan_age = %u\n", priv->ieee->scan_age);
	}

	IPW_DEBUG_INFO("exit\n");
	return len;
}

static DEVICE_ATTR(scan_age, S_IWUSR | S_IRUGO, show_scan_age, store_scan_age);

static ssize_t show_led(struct device *d, struct device_attribute *attr,
			char *buf)
{
	struct ipw_priv *priv = dev_get_drvdata(d);
	return sprintf(buf, "%d\n", (priv->config & CFG_NO_LED) ? 0 : 1);
}

static ssize_t store_led(struct device *d, struct device_attribute *attr,
			 const char *buf, size_t count)
{
	struct ipw_priv *priv = dev_get_drvdata(d);

	IPW_DEBUG_INFO("enter\n");

	if (count == 0)
		return 0;

	if (*buf == 0) {
		IPW_DEBUG_LED("Disabling LED control.\n");
		priv->config |= CFG_NO_LED;
		ipw_led_shutdown(priv);
	} else {
		IPW_DEBUG_LED("Enabling LED control.\n");
		priv->config &= ~CFG_NO_LED;
		ipw_led_init(priv);
	}

	IPW_DEBUG_INFO("exit\n");
	return count;
}

static DEVICE_ATTR(led, S_IWUSR | S_IRUGO, show_led, store_led);

static ssize_t show_status(struct device *d,
			   struct device_attribute *attr, char *buf)
{
	struct ipw_priv *p = d->driver_data;
	return sprintf(buf, "0x%08x\n", (int)p->status);
}

static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);

static ssize_t show_cfg(struct device *d, struct device_attribute *attr,
			char *buf)
{
	struct ipw_priv *p = d->driver_data;
	return sprintf(buf, "0x%08x\n", (int)p->config);
}

static DEVICE_ATTR(cfg, S_IRUGO, show_cfg, NULL);

static ssize_t show_nic_type(struct device *d,
			     struct device_attribute *attr, char *buf)
{
	struct ipw_priv *priv = d->driver_data;
	return sprintf(buf, "TYPE: %d\n", priv->nic_type);
}

static DEVICE_ATTR(nic_type, S_IRUGO, show_nic_type, NULL);

static ssize_t show_ucode_version(struct device *d,
				  struct device_attribute *attr, char *buf)
{
	u32 len = sizeof(u32), tmp = 0;
	struct ipw_priv *p = d->driver_data;

	if (ipw_get_ordinal(p, IPW_ORD_STAT_UCODE_VERSION, &tmp, &len))
		return 0;

	return sprintf(buf, "0x%08x\n", tmp);
}

static DEVICE_ATTR(ucode_version, S_IWUSR | S_IRUGO, show_ucode_version, NULL);

static ssize_t show_rtc(struct device *d, struct device_attribute *attr,
			char *buf)
{
	u32 len = sizeof(u32), tmp = 0;
	struct ipw_priv *p = d->driver_data;

	if (ipw_get_ordinal(p, IPW_ORD_STAT_RTC, &tmp, &len))
		return 0;

	return sprintf(buf, "0x%08x\n", tmp);
}

static DEVICE_ATTR(rtc, S_IWUSR | S_IRUGO, show_rtc, NULL);

/*
 * Add a device attribute to view/control the delay between eeprom
 * operations.
 */
static ssize_t show_eeprom_delay(struct device *d,
				 struct device_attribute *attr, char *buf)
{
	int n = ((struct ipw_priv *)d->driver_data)->eeprom_delay;
	return sprintf(buf, "%i\n", n);
}
static ssize_t store_eeprom_delay(struct device *d,
				  struct device_attribute *attr,
				  const char *buf, size_t count)
{
	struct ipw_priv *p = d->driver_data;
	sscanf(buf, "%i", &p->eeprom_delay);
	return strnlen(buf, count);
}

static DEVICE_ATTR(eeprom_delay, S_IWUSR | S_IRUGO,
		   show_eeprom_delay, store_eeprom_delay);

static ssize_t show_command_event_reg(struct device *d,
				      struct device_attribute *attr, char *buf)
{
	u32 reg = 0;
	struct ipw_priv *p = d->driver_data;

	reg = ipw_read_reg32(p, IPW_INTERNAL_CMD_EVENT);
	return sprintf(buf, "0x%08x\n", reg);
}
static ssize_t store_command_event_reg(struct device *d,
				       struct device_attribute *attr,
				       const char *buf, size_t count)
{
	u32 reg;
	struct ipw_priv *p = d->driver_data;

	sscanf(buf, "%x", &reg);
	ipw_write_reg32(p, IPW_INTERNAL_CMD_EVENT, reg);
	return strnlen(buf, count);
}

static DEVICE_ATTR(command_event_reg, S_IWUSR | S_IRUGO,
		   show_command_event_reg, store_command_event_reg);

static ssize_t show_mem_gpio_reg(struct device *d,
				 struct device_attribute *attr, char *buf)
{
	u32 reg = 0;
	struct ipw_priv *p = d->driver_data;

	reg = ipw_read_reg32(p, 0x301100);
	return sprintf(buf, "0x%08x\n", reg);
}
static ssize_t store_mem_gpio_reg(struct device *d,
				  struct device_attribute *attr,
				  const char *buf, size_t count)
{
	u32 reg;
	struct ipw_priv *p = d->driver_data;

	sscanf(buf, "%x", &reg);
	ipw_write_reg32(p, 0x301100, reg);
	return strnlen(buf, count);
}

static DEVICE_ATTR(mem_gpio_reg, S_IWUSR | S_IRUGO,
		   show_mem_gpio_reg, store_mem_gpio_reg);

static ssize_t show_indirect_dword(struct device *d,
				   struct device_attribute *attr, char *buf)
{
	u32 reg = 0;
	struct ipw_priv *priv = d->driver_data;

	if (priv->status & STATUS_INDIRECT_DWORD)
		reg = ipw_read_reg32(priv, priv->indirect_dword);
	else
		reg = 0;

	return sprintf(buf, "0x%08x\n", reg);
}
static ssize_t store_indirect_dword(struct device *d,
				    struct device_attribute *attr,
				    const char *buf, size_t count)
{
	struct ipw_priv *priv = d->driver_data;

	sscanf(buf, "%x", &priv->indirect_dword);
	priv->status |= STATUS_INDIRECT_DWORD;
	return strnlen(buf, count);
}

static DEVICE_ATTR(indirect_dword, S_IWUSR | S_IRUGO,
		   show_indirect_dword, store_indirect_dword);

static ssize_t show_indirect_byte(struct device *d,
				  struct device_attribute *attr, char *buf)
{
	u8 reg = 0;
	struct ipw_priv *priv = d->driver_data;

	if (priv->status & STATUS_INDIRECT_BYTE)
		reg = ipw_read_reg8(priv, priv->indirect_byte);
	else
		reg = 0;

	return sprintf(buf, "0x%02x\n", reg);
}
static ssize_t store_indirect_byte(struct device *d,
				   struct device_attribute *attr,
				   const char *buf, size_t count)
{
	struct ipw_priv *priv = d->driver_data;

	sscanf(buf, "%x", &priv->indirect_byte);
	priv->status |= STATUS_INDIRECT_BYTE;
	return strnlen(buf, count);
}

static DEVICE_ATTR(indirect_byte, S_IWUSR | S_IRUGO,
		   show_indirect_byte, store_indirect_byte);

static ssize_t show_direct_dword(struct device *d,
				 struct device_attribute *attr, char *buf)
{
	u32 reg = 0;
	struct ipw_priv *priv = d->driver_data;

	if (priv->status & STATUS_DIRECT_DWORD)
		reg = ipw_read32(priv, priv->direct_dword);
	else
		reg = 0;

	return sprintf(buf, "0x%08x\n", reg);
}
static ssize_t store_direct_dword(struct device *d,
				  struct device_attribute *attr,
				  const char *buf, size_t count)
{
	struct ipw_priv *priv = d->driver_data;

	sscanf(buf, "%x", &priv->direct_dword);
	priv->status |= STATUS_DIRECT_DWORD;
	return strnlen(buf, count);
}

static DEVICE_ATTR(direct_dword, S_IWUSR | S_IRUGO,
		   show_direct_dword, store_direct_dword);

static int rf_kill_active(struct ipw_priv *priv)
{
	if (0 == (ipw_read32(priv, 0x30) & 0x10000))
		priv->status |= STATUS_RF_KILL_HW;
	else
		priv->status &= ~STATUS_RF_KILL_HW;

	return (priv->status & STATUS_RF_KILL_HW) ? 1 : 0;
}

static ssize_t show_rf_kill(struct device *d, struct device_attribute *attr,
			    char *buf)
{
	/* 0 - RF kill not enabled
	   1 - SW based RF kill active (sysfs)
	   2 - HW based RF kill active
	   3 - Both HW and SW baed RF kill active */
	struct ipw_priv *priv = d->driver_data;
	int val = ((priv->status & STATUS_RF_KILL_SW) ? 0x1 : 0x0) |
	    (rf_kill_active(priv) ? 0x2 : 0x0);
	return sprintf(buf, "%i\n", val);
}

static int ipw_radio_kill_sw(struct ipw_priv *priv, int disable_radio)
{
	if ((disable_radio ? 1 : 0) ==
	    ((priv->status & STATUS_RF_KILL_SW) ? 1 : 0))
		return 0;

	IPW_DEBUG_RF_KILL("Manual SW RF Kill set to: RADIO  %s\n",
			  disable_radio ? "OFF" : "ON");

	if (disable_radio) {
		priv->status |= STATUS_RF_KILL_SW;

		if (priv->workqueue) {
			cancel_delayed_work(&priv->request_scan);
			cancel_delayed_work(&priv->scan_event);
		}
		queue_work(priv->workqueue, &priv->down);
	} else {
		priv->status &= ~STATUS_RF_KILL_SW;
		if (rf_kill_active(priv)) {
			IPW_DEBUG_RF_KILL("Can not turn radio back on - "
					  "disabled by HW switch\n");
			/* Make sure the RF_KILL check timer is running */
			cancel_delayed_work(&priv->rf_kill);
			queue_delayed_work(priv->workqueue, &priv->rf_kill,
					   round_jiffies_relative(2 * HZ));
		} else
			queue_work(priv->workqueue, &priv->up);
	}

	return 1;
}

static ssize_t store_rf_kill(struct device *d, struct device_attribute *attr,
			     const char *buf, size_t count)
{
	struct ipw_priv *priv = d->driver_data;

	ipw_radio_kill_sw(priv, buf[0] == '1');

	return count;
}

static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);

static ssize_t show_speed_scan(struct device *d, struct device_attribute *attr,
			       char *buf)
{
	struct ipw_priv *priv = (struct ipw_priv *)d->driver_data;
	int pos = 0, len = 0;
	if (priv->config & CFG_SPEED_SCAN) {
		while (priv->speed_scan[pos] != 0)
			len += sprintf(&buf[len], "%d ",
				       priv->speed_scan[pos++]);
		return len + sprintf(&buf[len], "\n");
	}

	return sprintf(buf, "0\n");
}

static ssize_t store_speed_scan(struct device *d, struct device_attribute *attr,
				const char *buf, size_t count)
{
	struct ipw_priv *priv = (struct ipw_priv *)d->driver_data;
	int channel, pos = 0;
	const char *p = buf;

	/* list of space separated channels to scan, optionally ending with 0 */
	while ((channel = simple_strtol(p, NULL, 0))) {
		if (pos == MAX_SPEED_SCAN - 1) {
			priv->speed_scan[pos] = 0;
			break;
		}

		if (ieee80211_is_valid_channel(priv->ieee, channel))
			priv->speed_scan[pos++] = channel;
		else
			IPW_WARNING("Skipping invalid channel request: %d\n",
				    channel);
		p = strchr(p, ' ');
		if (!p)
			break;
		while (*p == ' ' || *p == '\t')
			p++;
	}

	if (pos == 0)
		priv->config &= ~CFG_SPEED_SCAN;
	else {
		priv->speed_scan_pos = 0;
		priv->config |= CFG_SPEED_SCAN;
	}

	return count;
}

static DEVICE_ATTR(speed_scan, S_IWUSR | S_IRUGO, show_speed_scan,
		   store_speed_scan);

static ssize_t show_net_stats(struct device *d, struct device_attribute *attr,
			      char *buf)
{
	struct ipw_priv *priv = (struct ipw_priv *)d->driver_data;
	return sprintf(buf, "%c\n", (priv->config & CFG_NET_STATS) ? '1' : '0');
}

static ssize_t store_net_stats(struct device *d, struct device_attribute *attr,
			       const char *buf, size_t count)
{
	struct ipw_priv *priv = (struct ipw_priv *)d->driver_data;
	if (buf[0] == '1')
		priv->config |= CFG_NET_STATS;
	else
		priv->config &= ~CFG_NET_STATS;

	return count;
}

static DEVICE_ATTR(net_stats, S_IWUSR | S_IRUGO,
		   show_net_stats, store_net_stats);

static ssize_t show_channels(struct device *d,
			     struct device_attribute *attr,
			     char *buf)
{
	struct ipw_priv *priv = dev_get_drvdata(d);
	const struct ieee80211_geo *geo = ieee80211_get_geo(priv->ieee);
	int len = 0, i;

	len = sprintf(&buf[len],
		      "Displaying %d channels in 2.4Ghz band "
		      "(802.11bg):\n", geo->bg_channels);

	for (i = 0; i < geo->bg_channels; i++) {
		len += sprintf(&buf[len], "%d: BSS%s%s, %s, Band %s.\n",
			       geo->bg[i].channel,
			       geo->bg[i].flags & IEEE80211_CH_RADAR_DETECT ?
			       " (radar spectrum)" : "",
			       ((geo->bg[i].flags & IEEE80211_CH_NO_IBSS) ||
				(geo->bg[i].flags & IEEE80211_CH_RADAR_DETECT))
			       ? "" : ", IBSS",
			       geo->bg[i].flags & IEEE80211_CH_PASSIVE_ONLY ?
			       "passive only" : "active/passive",
			       geo->bg[i].flags & IEEE80211_CH_B_ONLY ?
			       "B" : "B/G");
	}

	len += sprintf(&buf[len],
		       "Displaying %d channels in 5.2Ghz band "
		       "(802.11a):\n", geo->a_channels);
	for (i = 0; i < geo->a_channels; i++) {
		len += sprintf(&buf[len], "%d: BSS%s%s, %s.\n",
			       geo->a[i].channel,
			       geo->a[i].flags & IEEE80211_CH_RADAR_DETECT ?
			       " (radar spectrum)" : "",
			       ((geo->a[i].flags & IEEE80211_CH_NO_IBSS) ||
				(geo->a[i].flags & IEEE80211_CH_RADAR_DETECT))
			       ? "" : ", IBSS",
			       geo->a[i].flags & IEEE80211_CH_PASSIVE_ONLY ?
			       "passive only" : "active/passive");
	}

	return len;
}

static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);