ipw2200.c

来自「LINUX 2.6.17.4的源码」· C语言 代码 · 共 2,379 行 · 第 1/5 页

{
	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);
		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,
					   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 void notify_wx_assoc_event(struct ipw_priv *priv)
{
	union iwreq_data wrqu;
	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
	if (priv->status & STATUS_ASSOCIATED)
		memcpy(wrqu.ap_addr.sa_data, priv->bssid, ETH_ALEN);
	else
		memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
	wireless_send_event(priv->net_dev, SIOCGIWAP, &wrqu, NULL);
}

static void ipw_irq_tasklet(struct ipw_priv *priv)
{
	u32 inta, inta_mask, handled = 0;
	unsigned long flags;
	int rc = 0;

	spin_lock_irqsave(&priv->lock, flags);

	inta = ipw_read32(priv, IPW_INTA_RW);
	inta_mask = ipw_read32(priv, IPW_INTA_MASK_R);
	inta &= (IPW_INTA_MASK_ALL & inta_mask);

	/* Add any cached INTA values that need to be handled */
	inta |= priv->isr_inta;

	/* handle all the justifications for the interrupt */
	if (inta & IPW_INTA_BIT_RX_TRANSFER) {
		ipw_rx(priv);
		handled |= IPW_INTA_BIT_RX_TRANSFER;
	}

	if (inta & IPW_INTA_BIT_TX_CMD_QUEUE) {
		IPW_DEBUG_HC("Command completed.\n");
		rc = ipw_queue_tx_reclaim(priv, &priv->txq_cmd, -1);
		priv->status &= ~STATUS_HCMD_ACTIVE;
		wake_up_interruptible(&priv->wait_command_queue);
		handled |= IPW_INTA_BIT_TX_CMD_QUEUE;
	}

	if (inta & IPW_INTA_BIT_TX_QUEUE_1) {
		IPW_DEBUG_TX("TX_QUEUE_1\n");
		rc = ipw_queue_tx_reclaim(priv, &priv->txq[0], 0);
		handled |= IPW_INTA_BIT_TX_QUEUE_1;
	}

	if (inta & IPW_INTA_BIT_TX_QUEUE_2) {
		IPW_DEBUG_TX("TX_QUEUE_2\n");
		rc = ipw_queue_tx_reclaim(priv, &priv->txq[1], 1);
		handled |= IPW_INTA_BIT_TX_QUEUE_2;
	}

	if (inta & IPW_INTA_BIT_TX_QUEUE_3) {
		IPW_DEBUG_TX("TX_QUEUE_3\n");
		rc = ipw_queue_tx_reclaim(priv, &priv->txq[2], 2);
		handled |= IPW_INTA_BIT_TX_QUEUE_3;
	}

	if (inta & IPW_INTA_BIT_TX_QUEUE_4) {
		IPW_DEBUG_TX("TX_QUEUE_4\n");
		rc = ipw_queue_tx_reclaim(priv, &priv->txq[3], 3);
		handled |= IPW_INTA_BIT_TX_QUEUE_4;
	}

	if (inta & IPW_INTA_BIT_STATUS_CHANGE) {
		IPW_WARNING("STATUS_CHANGE\n");
		handled |= IPW_INTA_BIT_STATUS_CHANGE;
	}

	if (inta & IPW_INTA_BIT_BEACON_PERIOD_EXPIRED) {
		IPW_WARNING("TX_PERIOD_EXPIRED\n");
		handled |= IPW_INTA_BIT_BEACON_PERIOD_EXPIRED;
	}

	if (inta & IPW_INTA_BIT_SLAVE_MODE_HOST_CMD_DONE) {
		IPW_WARNING("HOST_CMD_DONE\n");
		handled |= IPW_INTA_BIT_SLAVE_MODE_HOST_CMD_DONE;
	}

	if (inta & IPW_INTA_BIT_FW_INITIALIZATION_DONE) {
		IPW_WARNING("FW_INITIALIZATION_DONE\n");
		handled |= IPW_INTA_BIT_FW_INITIALIZATION_DONE;
	}

	if (inta & IPW_INTA_BIT_FW_CARD_DISABLE_PHY_OFF_DONE) {
		IPW_WARNING("PHY_OFF_DONE\n");
		handled |= IPW_INTA_BIT_FW_CARD_DISABLE_PHY_OFF_DONE;
	}

	if (inta & IPW_INTA_BIT_RF_KILL_DONE) {
		IPW_DEBUG_RF_KILL("RF_KILL_DONE\n");
		priv->status |= STATUS_RF_KILL_HW;
		wake_up_interruptible(&priv->wait_command_queue);
		priv->status &= ~(STATUS_ASSOCIATED | STATUS_ASSOCIATING);
		cancel_delayed_work(&priv->request_scan);
		schedule_work(&priv->link_down);
		queue_delayed_work(priv->workqueue, &priv->rf_kill, 2 * HZ);
		handled |= IPW_INTA_BIT_RF_KILL_DONE;
	}

	if (inta & IPW_INTA_BIT_FATAL_ERROR) {
		IPW_WARNING("Firmware error detected.  Restarting.\n");
		if (priv->error) {
			IPW_DEBUG_FW("Sysfs 'error' log already exists.\n");
#ifdef CONFIG_IPW2200_DEBUG
			if (ipw_debug_level & IPW_DL_FW_ERRORS) {
				struct ipw_fw_error *error =
				    ipw_alloc_error_log(priv);
				ipw_dump_error_log(priv, error);
				if (error)
					ipw_free_error_log(error);
			}
#endif
		} else {
			priv->error = ipw_alloc_error_log(priv);
			if (priv->error)
				IPW_DEBUG_FW("Sysfs 'error' log captured.\n");
			else
				IPW_DEBUG_FW("Error allocating sysfs 'error' "
					     "log.\n");
#ifdef CONFIG_IPW2200_DEBUG
			if (ipw_debug_level & IPW_DL_FW_ERRORS)
				ipw_dump_error_log(priv, priv->error);
#endif
		}

		/* XXX: If hardware encryption is for WPA/WPA2,
		 * we have to notify the supplicant. */
		if (priv->ieee->sec.encrypt) {
			priv->status &= ~STATUS_ASSOCIATED;
			notify_wx_assoc_event(priv);
		}

		/* Keep the restart process from trying to send host
		 * commands by clearing the INIT status bit */
		priv->status &= ~STATUS_INIT;

		/* Cancel currently queued command. */
		priv->status &= ~STATUS_HCMD_ACTIVE;
		wake_up_interruptible(&priv->wait_command_queue);

		queue_work(priv->workqueue, &priv->adapter_restart);
		handled |= IPW_INTA_BIT_FATAL_ERROR;
	}

	if (inta & IPW_INTA_BIT_PARITY_ERROR) {
		IPW_ERROR("Parity error\n");
		handled |= IPW_INTA_BIT_PARITY_ERROR;
	}

	if (handled != inta) {
		IPW_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
	}

	/* enable all interrupts */
	ipw_enable_interrupts(priv);

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

#define IPW_CMD(x) case IPW_CMD_ ## x : return #x
static char *get_cmd_string(u8 cmd)
{
	switch (cmd) {
		IPW_CMD(HOST_COMPLETE);
		IPW_CMD(POWER_DOWN);
		IPW_CMD(SYSTEM_CONFIG);
		IPW_CMD(MULTICAST_ADDRESS);
		IPW_CMD(SSID);
		IPW_CMD(ADAPTER_ADDRESS);
		IPW_CMD(PORT_TYPE);
		IPW_CMD(RTS_THRESHOLD);
		IPW_CMD(FRAG_THRESHOLD);
		IPW_CMD(POWER_MODE);
		IPW_CMD(WEP_KEY);
		IPW_CMD(TGI_TX_KEY);
		IPW_CMD(SCAN_REQUEST);
		IPW_CMD(SCAN_REQUEST_EXT);
		IPW_CMD(ASSOCIATE);
		IPW_CMD(SUPPORTED_RATES);
		IPW_CMD(SCAN_ABORT);
		IPW_CMD(TX_FLUSH);
		IPW_CMD(QOS_PARAMETERS);
		IPW_CMD(DINO_CONFIG);
		IPW_CMD(RSN_CAPABILITIES);
		IPW_CMD(RX_KEY);
		IPW_CMD(CARD_DISABLE);
		IPW_CMD(SEED_NUMBER);
		IPW_CMD(TX_POWER);
		IPW_CMD(COUNTRY_INFO);
		IPW_CMD(AIRONET_INFO);
		IPW_CMD(AP_TX_POWER);
		IPW_CMD(CCKM_INFO);
		IPW_CMD(CCX_VER_INFO);
		IPW_CMD(SET_CALIBRATION);
		IPW_CMD(SENSITIVITY_CALIB);
		IPW_CMD(RETRY_LIMIT);
		IPW_CMD(IPW_PRE_POWER_DOWN);
		IPW_CMD(VAP_BEACON_TEMPLATE);
		IPW_CMD(VAP_DTIM_PERIOD);
		IPW_CMD(EXT_SUPPORTED_RATES);
		IPW_CMD(VAP_LOCAL_TX_PWR_CONSTRAINT);
		IPW_CMD(VAP_QUIET_INTERVALS);
		IPW_CMD(VAP_CHANNEL_SWITCH);
		IPW_CMD(VAP_MANDATORY_CHANNELS);
		IPW_CMD(VAP_CELL_PWR_LIMIT);
		IPW_CMD(VAP_CF_PARAM_SET);