tty: move ipwireless driver from drivers/char/pcmcia/ to drivers/tty/

As planned by Arnd Bergmann, this moves the ipwireless driver to the
drivers/tty/ directory as that's where it really belongs.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: David Sterba <dsterba@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 508 deletions

diff --git a/drivers/char/pcmcia/ipwireless/network.c b/drivers/char/pcmcia/ipwireless/network.c
deleted file mode 100644
index f7daeea598e..00000000000
--- a/drivers/char/pcmcia/ipwireless/network.c
+++ /dev/null
@@ -1,508 +0,0 @@
-/*
- * IPWireless 3G PCMCIA Network Driver
- *
- * Original code
- *   by Stephen Blackheath <stephen@blacksapphire.com>,
- *      Ben Martel <benm@symmetric.co.nz>
- *
- * Copyrighted as follows:
- *   Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
- *
- * Various driver changes and rewrites, port to new kernels
- *   Copyright (C) 2006-2007 Jiri Kosina
- *
- * Misc code cleanups and updates
- *   Copyright (C) 2007 David Sterba
- */
-
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/mutex.h>
-#include <linux/netdevice.h>
-#include <linux/ppp_channel.h>
-#include <linux/ppp_defs.h>
-#include <linux/slab.h>
-#include <linux/if_ppp.h>
-#include <linux/skbuff.h>
-
-#include "network.h"
-#include "hardware.h"
-#include "main.h"
-#include "tty.h"
-
-#define MAX_ASSOCIATED_TTYS 2
-
-#define SC_RCV_BITS     (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP)
-
-struct ipw_network {
-	/* Hardware context, used for calls to hardware layer. */
-	struct ipw_hardware *hardware;
-	/* Context for kernel 'generic_ppp' functionality */
-	struct ppp_channel *ppp_channel;
-	/* tty context connected with IPW console */
-	struct ipw_tty *associated_ttys[NO_OF_IPW_CHANNELS][MAX_ASSOCIATED_TTYS];
-	/* True if ppp needs waking up once we're ready to xmit */
-	int ppp_blocked;
-	/* Number of packets queued up in hardware module. */
-	int outgoing_packets_queued;
-	/* Spinlock to avoid interrupts during shutdown */
-	spinlock_t lock;
-	struct mutex close_lock;
-
-	/* PPP ioctl data, not actually used anywere */
-	unsigned int flags;
-	unsigned int rbits;
-	u32 xaccm[8];
-	u32 raccm;
-	int mru;
-
-	int shutting_down;
-	unsigned int ras_control_lines;
-
-	struct work_struct work_go_online;
-	struct work_struct work_go_offline;
-};
-
-static void notify_packet_sent(void *callback_data, unsigned int packet_length)
-{
-	struct ipw_network *network = callback_data;
-	unsigned long flags;
-
-	spin_lock_irqsave(&network->lock, flags);
-	network->outgoing_packets_queued--;
-	if (network->ppp_channel != NULL) {
-		if (network->ppp_blocked) {
-			network->ppp_blocked = 0;
-			spin_unlock_irqrestore(&network->lock, flags);
-			ppp_output_wakeup(network->ppp_channel);
-			if (ipwireless_debug)
-				printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
-				       ": ppp unblocked\n");
-		} else
-			spin_unlock_irqrestore(&network->lock, flags);
-	} else
-		spin_unlock_irqrestore(&network->lock, flags);
-}
-
-/*
- * Called by the ppp system when it has a packet to send to the hardware.
- */
-static int ipwireless_ppp_start_xmit(struct ppp_channel *ppp_channel,
-				     struct sk_buff *skb)
-{
-	struct ipw_network *network = ppp_channel->private;
-	unsigned long flags;
-
-	spin_lock_irqsave(&network->lock, flags);
-	if (network->outgoing_packets_queued < ipwireless_out_queue) {
-		unsigned char *buf;
-		static unsigned char header[] = {
-			PPP_ALLSTATIONS, /* 0xff */
-			PPP_UI,		 /* 0x03 */
-		};
-		int ret;
-
-		network->outgoing_packets_queued++;
-		spin_unlock_irqrestore(&network->lock, flags);
-
-		/*
-		 * If we have the requested amount of headroom in the skb we
-		 * were handed, then we can add the header efficiently.
-		 */
-		if (skb_headroom(skb) >= 2) {
-			memcpy(skb_push(skb, 2), header, 2);
-			ret = ipwireless_send_packet(network->hardware,
-					       IPW_CHANNEL_RAS, skb->data,
-					       skb->len,
-					       notify_packet_sent,
-					       network);
-			if (ret == -1) {
-				skb_pull(skb, 2);
-				return 0;
-			}
-		} else {
-			/* Otherwise (rarely) we do it inefficiently. */
-			buf = kmalloc(skb->len + 2, GFP_ATOMIC);
-			if (!buf)
-				return 0;
-			memcpy(buf + 2, skb->data, skb->len);
-			memcpy(buf, header, 2);
-			ret = ipwireless_send_packet(network->hardware,
-					       IPW_CHANNEL_RAS, buf,
-					       skb->len + 2,
-					       notify_packet_sent,
-					       network);
-			kfree(buf);
-			if (ret == -1)
-				return 0;
-		}
-		kfree_skb(skb);
-		return 1;
-	} else {
-		/*
-		 * Otherwise reject the packet, and flag that the ppp system
-		 * needs to be unblocked once we are ready to send.
-		 */
-		network->ppp_blocked = 1;
-		spin_unlock_irqrestore(&network->lock, flags);
-		if (ipwireless_debug)
-			printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": ppp blocked\n");
-		return 0;
-	}
-}
-
-/* Handle an ioctl call that has come in via ppp. (copy of ppp_async_ioctl() */
-static int ipwireless_ppp_ioctl(struct ppp_channel *ppp_channel,
-				unsigned int cmd, unsigned long arg)
-{
-	struct ipw_network *network = ppp_channel->private;
-	int err, val;
-	u32 accm[8];
-	int __user *user_arg = (int __user *) arg;
-
-	err = -EFAULT;
-	switch (cmd) {
-	case PPPIOCGFLAGS:
-		val = network->flags | network->rbits;
-		if (put_user(val, user_arg))
-			break;
-		err = 0;
-		break;
-
-	case PPPIOCSFLAGS:
-		if (get_user(val, user_arg))
-			break;
-		network->flags = val & ~SC_RCV_BITS;
-		network->rbits = val & SC_RCV_BITS;
-		err = 0;
-		break;
-
-	case PPPIOCGASYNCMAP:
-		if (put_user(network->xaccm[0], user_arg))
-			break;
-		err = 0;
-		break;
-
-	case PPPIOCSASYNCMAP:
-		if (get_user(network->xaccm[0], user_arg))
-			break;
-		err = 0;
-		break;
-
-	case PPPIOCGRASYNCMAP:
-		if (put_user(network->raccm, user_arg))
-			break;
-		err = 0;
-		break;
-
-	case PPPIOCSRASYNCMAP:
-		if (get_user(network->raccm, user_arg))
-			break;
-		err = 0;
-		break;
-
-	case PPPIOCGXASYNCMAP:
-		if (copy_to_user((void __user *) arg, network->xaccm,
-					sizeof(network->xaccm)))
-			break;
-		err = 0;
-		break;
-
-	case PPPIOCSXASYNCMAP:
-		if (copy_from_user(accm, (void __user *) arg, sizeof(accm)))
-			break;
-		accm[2] &= ~0x40000000U;	/* can't escape 0x5e */
-		accm[3] |= 0x60000000U;	/* must escape 0x7d, 0x7e */
-		memcpy(network->xaccm, accm, sizeof(network->xaccm));
-		err = 0;
-		break;
-
-	case PPPIOCGMRU:
-		if (put_user(network->mru, user_arg))
-			break;
-		err = 0;
-		break;
-
-	case PPPIOCSMRU:
-		if (get_user(val, user_arg))
-			break;
-		if (val < PPP_MRU)
-			val = PPP_MRU;
-		network->mru = val;
-		err = 0;
-		break;
-
-	default:
-		err = -ENOTTY;
-	}
-
-	return err;
-}
-
-static const struct ppp_channel_ops ipwireless_ppp_channel_ops = {
-	.start_xmit = ipwireless_ppp_start_xmit,
-	.ioctl      = ipwireless_ppp_ioctl
-};
-
-static void do_go_online(struct work_struct *work_go_online)
-{
-	struct ipw_network *network =
-		container_of(work_go_online, struct ipw_network,
-				work_go_online);
-	unsigned long flags;
-
-	spin_lock_irqsave(&network->lock, flags);
-	if (!network->ppp_channel) {
-		struct ppp_channel *channel;
-
-		spin_unlock_irqrestore(&network->lock, flags);
-		channel = kzalloc(sizeof(struct ppp_channel), GFP_KERNEL);
-		if (!channel) {
-			printk(KERN_ERR IPWIRELESS_PCCARD_NAME
-					": unable to allocate PPP channel\n");
-			return;
-		}
-		channel->private = network;
-		channel->mtu = 16384;	/* Wild guess */
-		channel->hdrlen = 2;
-		channel->ops = &ipwireless_ppp_channel_ops;
-
-		network->flags = 0;
-		network->rbits = 0;
-		network->mru = PPP_MRU;
-		memset(network->xaccm, 0, sizeof(network->xaccm));
-		network->xaccm[0] = ~0U;
-		network->xaccm[3] = 0x60000000U;
-		network->raccm = ~0U;
-		ppp_register_channel(channel);
-		spin_lock_irqsave(&network->lock, flags);
-		network->ppp_channel = channel;
-	}
-	spin_unlock_irqrestore(&network->lock, flags);
-}
-
-static void do_go_offline(struct work_struct *work_go_offline)
-{
-	struct ipw_network *network =
-		container_of(work_go_offline, struct ipw_network,
-				work_go_offline);
-	unsigned long flags;
-
-	mutex_lock(&network->close_lock);
-	spin_lock_irqsave(&network->lock, flags);
-	if (network->ppp_channel != NULL) {
-		struct ppp_channel *channel = network->ppp_channel;
-
-		network->ppp_channel = NULL;
-		spin_unlock_irqrestore(&network->lock, flags);
-		mutex_unlock(&network->close_lock);
-		ppp_unregister_channel(channel);
-	} else {
-		spin_unlock_irqrestore(&network->lock, flags);
-		mutex_unlock(&network->close_lock);
-	}
-}
-
-void ipwireless_network_notify_control_line_change(struct ipw_network *network,
-						   unsigned int channel_idx,
-						   unsigned int control_lines,
-						   unsigned int changed_mask)
-{
-	int i;
-
-	if (channel_idx == IPW_CHANNEL_RAS)
-		network->ras_control_lines = control_lines;
-
-	for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) {
-		struct ipw_tty *tty =
-			network->associated_ttys[channel_idx][i];
-
-		/*
-		 * If it's associated with a tty (other than the RAS channel
-		 * when we're online), then send the data to that tty.  The RAS
-		 * channel's data is handled above - it always goes through
-		 * ppp_generic.
-		 */
-		if (tty)
-			ipwireless_tty_notify_control_line_change(tty,
-								  channel_idx,
-								  control_lines,
-								  changed_mask);
-	}
-}
-
-/*
- * Some versions of firmware stuff packets with 0xff 0x03 (PPP: ALLSTATIONS, UI)
- * bytes, which are required on sent packet, but not always present on received
- * packets
- */
-static struct sk_buff *ipw_packet_received_skb(unsigned char *data,
-					       unsigned int length)
-{
-	struct sk_buff *skb;
-
-	if (length > 2 && data[0] == PPP_ALLSTATIONS && data[1] == PPP_UI) {
-		length -= 2;
-		data += 2;
-	}
-
-	skb = dev_alloc_skb(length + 4);
-	skb_reserve(skb, 2);
-	memcpy(skb_put(skb, length), data, length);
-
-	return skb;
-}
-
-void ipwireless_network_packet_received(struct ipw_network *network,
-					unsigned int channel_idx,
-					unsigned char *data,
-					unsigned int length)
-{
-	int i;
-	unsigned long flags;
-
-	for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) {
-		struct ipw_tty *tty = network->associated_ttys[channel_idx][i];
-
-		if (!tty)
-			continue;
-
-		/*
-		 * If it's associated with a tty (other than the RAS channel
-		 * when we're online), then send the data to that tty.  The RAS
-		 * channel's data is handled above - it always goes through
-		 * ppp_generic.
-		 */
-		if (channel_idx == IPW_CHANNEL_RAS
-				&& (network->ras_control_lines &
-					IPW_CONTROL_LINE_DCD) != 0
-				&& ipwireless_tty_is_modem(tty)) {
-			/*
-			 * If data came in on the RAS channel and this tty is
-			 * the modem tty, and we are online, then we send it to
-			 * the PPP layer.
-			 */
-			mutex_lock(&network->close_lock);
-			spin_lock_irqsave(&network->lock, flags);
-			if (network->ppp_channel != NULL) {
-				struct sk_buff *skb;
-
-				spin_unlock_irqrestore(&network->lock,
-						flags);
-
-				/* Send the data to the ppp_generic module. */
-				skb = ipw_packet_received_skb(data, length);
-				ppp_input(network->ppp_channel, skb);
-			} else
-				spin_unlock_irqrestore(&network->lock,
-						flags);
-			mutex_unlock(&network->close_lock);
-		}
-		/* Otherwise we send it out the tty. */
-		else
-			ipwireless_tty_received(tty, data, length);
-	}
-}
-
-struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw)
-{
-	struct ipw_network *network =
-		kzalloc(sizeof(struct ipw_network), GFP_ATOMIC);
-
-	if (!network)
-		return NULL;
-
-	spin_lock_init(&network->lock);
-	mutex_init(&network->close_lock);
-
-	network->hardware = hw;
-
-	INIT_WORK(&network->work_go_online, do_go_online);
-	INIT_WORK(&network->work_go_offline, do_go_offline);
-
-	ipwireless_associate_network(hw, network);
-
-	return network;
-}
-
-void ipwireless_network_free(struct ipw_network *network)
-{
-	network->shutting_down = 1;
-
-	ipwireless_ppp_close(network);
-	flush_work_sync(&network->work_go_online);
-	flush_work_sync(&network->work_go_offline);
-
-	ipwireless_stop_interrupts(network->hardware);
-	ipwireless_associate_network(network->hardware, NULL);
-
-	kfree(network);
-}
-
-void ipwireless_associate_network_tty(struct ipw_network *network,
-				      unsigned int channel_idx,
-				      struct ipw_tty *tty)
-{
-	int i;
-
-	for (i = 0; i < MAX_ASSOCIATED_TTYS; i++)
-		if (network->associated_ttys[channel_idx][i] == NULL) {
-			network->associated_ttys[channel_idx][i] = tty;
-			break;
-		}
-}
-
-void ipwireless_disassociate_network_ttys(struct ipw_network *network,
-					  unsigned int channel_idx)
-{
-	int i;
-
-	for (i = 0; i < MAX_ASSOCIATED_TTYS; i++)
-		network->associated_ttys[channel_idx][i] = NULL;
-}
-
-void ipwireless_ppp_open(struct ipw_network *network)
-{
-	if (ipwireless_debug)
-		printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": online\n");
-	schedule_work(&network->work_go_online);
-}
-
-void ipwireless_ppp_close(struct ipw_network *network)
-{
-	/* Disconnect from the wireless network. */
-	if (ipwireless_debug)
-		printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": offline\n");
-	schedule_work(&network->work_go_offline);
-}
-
-int ipwireless_ppp_channel_index(struct ipw_network *network)
-{
-	int ret = -1;
-	unsigned long flags;
-
-	spin_lock_irqsave(&network->lock, flags);
-	if (network->ppp_channel != NULL)
-		ret = ppp_channel_index(network->ppp_channel);
-	spin_unlock_irqrestore(&network->lock, flags);
-
-	return ret;
-}
-
-int ipwireless_ppp_unit_number(struct ipw_network *network)
-{
-	int ret = -1;
-	unsigned long flags;
-
-	spin_lock_irqsave(&network->lock, flags);
-	if (network->ppp_channel != NULL)
-		ret = ppp_unit_number(network->ppp_channel);
-	spin_unlock_irqrestore(&network->lock, flags);
-
-	return ret;
-}
-
-int ipwireless_ppp_mru(const struct ipw_network *network)
-{
-	return network->mru;
-}