[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / ieee802154 / fakehard.c

/*
 * Sample driver for HardMAC IEEE 802.15.4 devices
 *
 * Copyright (C) 2009 Siemens AG
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Written by:
 * Dmitry Eremin-Solenikov <dmitry.baryshkov@siemens.com>
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/if_arp.h>

#include <net/af_ieee802154.h>
#include <net/ieee802154_netdev.h>
#include <net/ieee802154.h>
#include <net/nl802154.h>
#include <net/wpan-phy.h>

struct fakehard_priv {
	struct wpan_phy *phy;
};

static struct wpan_phy *fake_to_phy(const struct net_device *dev)
{
	struct fakehard_priv *priv = netdev_priv(dev);
	return priv->phy;
}

/**
 * fake_get_phy - Return a phy corresponding to this device.
 * @dev: The network device for which to return the wan-phy object
 *
 * This function returns a wpan-phy object corresponding to the passed
 * network device. Reference counter for wpan-phy object is incremented,
 * so when the wpan-phy isn't necessary, you should drop the reference
 * via @wpan_phy_put() call.
 */
static struct wpan_phy *fake_get_phy(const struct net_device *dev)
{
	struct wpan_phy *phy = fake_to_phy(dev);
	return to_phy(get_device(&phy->dev));
}

/**
 * fake_get_pan_id - Retrieve the PAN ID of the device.
 * @dev: The network device to retrieve the PAN of.
 *
 * Return the ID of the PAN from the PIB.
 */
static u16 fake_get_pan_id(const struct net_device *dev)
{
	BUG_ON(dev->type != ARPHRD_IEEE802154);

	return 0xeba1;
}

/**
 * fake_get_short_addr - Retrieve the short address of the device.
 * @dev: The network device to retrieve the short address of.
 *
 * Returns the IEEE 802.15.4 short-form address cached for this
 * device. If the device has not yet had a short address assigned
 * then this should return 0xFFFF to indicate a lack of association.
 */
static u16 fake_get_short_addr(const struct net_device *dev)
{
	BUG_ON(dev->type != ARPHRD_IEEE802154);

	return 0x1;
}

/**
 * fake_get_dsn - Retrieve the DSN of the device.
 * @dev: The network device to retrieve the DSN for.
 *
 * Returns the IEEE 802.15.4 DSN for the network device.
 * The DSN is the sequence number which will be added to each
 * packet or MAC command frame by the MAC during transmission.
 *
 * DSN means 'Data Sequence Number'.
 *
 * Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
 *       document.
 */
static u8 fake_get_dsn(const struct net_device *dev)
{
	BUG_ON(dev->type != ARPHRD_IEEE802154);

	return 0x00; /* DSN are implemented in HW, so return just 0 */
}

/**
 * fake_assoc_req - Make an association request to the HW.
 * @dev: The network device which we are associating to a network.
 * @addr: The coordinator with which we wish to associate.
 * @channel: The channel on which to associate.
 * @cap: The capability information field to use in the association.
 *
 * Start an association with a coordinator. The coordinator's address
 * and PAN ID can be found in @addr.
 *
 * Note: This is in section 7.3.1 and 7.5.3.1 of the IEEE
 *       802.15.4-2006 document.
 */
static int fake_assoc_req(struct net_device *dev,
		struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap)
{
	struct wpan_phy *phy = fake_to_phy(dev);

	mutex_lock(&phy->pib_lock);
	phy->current_channel = channel;
	phy->current_page = page;
	mutex_unlock(&phy->pib_lock);

	/* We simply emulate it here */
	return ieee802154_nl_assoc_confirm(dev, fake_get_short_addr(dev),
			IEEE802154_SUCCESS);
}

/**
 * fake_assoc_resp - Send an association response to a device.
 * @dev: The network device on which to send the response.
 * @addr: The address of the device to respond to.
 * @short_addr: The assigned short address for the device (if any).
 * @status: The result of the association request.
 *
 * Queue the association response of the coordinator to another
 * device's attempt to associate with the network which we
 * coordinate. This is then added to the indirect-send queue to be
 * transmitted to the end device when it polls for data.
 *
 * Note: This is in section 7.3.2 and 7.5.3.1 of the IEEE
 *       802.15.4-2006 document.
 */
static int fake_assoc_resp(struct net_device *dev,
		struct ieee802154_addr *addr, u16 short_addr, u8 status)
{
	return 0;
}

/**
 * fake_disassoc_req - Disassociate a device from a network.
 * @dev: The network device on which we're disassociating a device.
 * @addr: The device to disassociate from the network.
 * @reason: The reason to give to the device for being disassociated.
 *
 * This sends a disassociation notification to the device being
 * disassociated from the network.
 *
 * Note: This is in section 7.5.3.2 of the IEEE 802.15.4-2006
 *       document, with the reason described in 7.3.3.2.
 */
static int fake_disassoc_req(struct net_device *dev,
		struct ieee802154_addr *addr, u8 reason)
{
	return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
}

/**
 * fake_start_req - Start an IEEE 802.15.4 PAN.
 * @dev: The network device on which to start the PAN.
 * @addr: The coordinator address to use when starting the PAN.
 * @channel: The channel on which to start the PAN.
 * @bcn_ord: Beacon order.
 * @sf_ord: Superframe order.
 * @pan_coord: Whether or not we are the PAN coordinator or just
 *             requesting a realignment perhaps?
 * @blx: Battery Life Extension feature bitfield.
 * @coord_realign: Something to realign something else.
 *
 * If pan_coord is non-zero then this starts a network with the
 * provided parameters, otherwise it attempts a coordinator
 * realignment of the stated network instead.
 *
 * Note: This is in section 7.5.2.3 of the IEEE 802.15.4-2006
 * document, with 7.3.8 describing coordinator realignment.
 */
static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
				u8 channel, u8 page,
				u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
				u8 coord_realign)
{
	struct wpan_phy *phy = fake_to_phy(dev);

	mutex_lock(&phy->pib_lock);
	phy->current_channel = channel;
	phy->current_page = page;
	mutex_unlock(&phy->pib_lock);

	/* We don't emulate beacons here at all, so START should fail */
	ieee802154_nl_start_confirm(dev, IEEE802154_INVALID_PARAMETER);
	return 0;
}

/**
 * fake_scan_req - Start a channel scan.
 * @dev: The network device on which to perform a channel scan.
 * @type: The type of scan to perform.
 * @channels: The channel bitmask to scan.
 * @duration: How long to spend on each channel.
 *
 * This starts either a passive (energy) scan or an active (PAN) scan
 * on the channels indicated in the @channels bitmask. The duration of
 * the scan is measured in terms of superframe duration. Specifically,
 * the scan will spend aBaseSuperFrameDuration * ((2^n) + 1) on each
 * channel.
 *
 * Note: This is in section 7.5.2.1 of the IEEE 802.15.4-2006 document.
 */
static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
		u8 page, u8 duration)
{
	u8 edl[27] = {};
	return ieee802154_nl_scan_confirm(dev, IEEE802154_SUCCESS, type,
			channels, page,
			type == IEEE802154_MAC_SCAN_ED ? edl : NULL);
}

static struct ieee802154_mlme_ops fake_mlme = {
	.assoc_req = fake_assoc_req,
	.assoc_resp = fake_assoc_resp,
	.disassoc_req = fake_disassoc_req,
	.start_req = fake_start_req,
	.scan_req = fake_scan_req,

	.get_phy = fake_get_phy,

	.get_pan_id = fake_get_pan_id,
	.get_short_addr = fake_get_short_addr,
	.get_dsn = fake_get_dsn,
};

static int ieee802154_fake_open(struct net_device *dev)
{
	netif_start_queue(dev);
	return 0;
}

static int ieee802154_fake_close(struct net_device *dev)
{
	netif_stop_queue(dev);
	return 0;
}

static netdev_tx_t ieee802154_fake_xmit(struct sk_buff *skb,
					      struct net_device *dev)
{
	dev->stats.tx_packets++;
	dev->stats.tx_bytes += skb->len;

	/* FIXME: do hardware work here ... */

	dev_kfree_skb(skb);
	return NETDEV_TX_OK;
}


static int ieee802154_fake_ioctl(struct net_device *dev, struct ifreq *ifr,
		int cmd)
{
	struct sockaddr_ieee802154 *sa =
		(struct sockaddr_ieee802154 *)&ifr->ifr_addr;
	u16 pan_id, short_addr;

	switch (cmd) {
	case SIOCGIFADDR:
		/* FIXME: fixed here, get from device IRL */
		pan_id = fake_get_pan_id(dev);
		short_addr = fake_get_short_addr(dev);
		if (pan_id == IEEE802154_PANID_BROADCAST ||
		    short_addr == IEEE802154_ADDR_BROADCAST)
			return -EADDRNOTAVAIL;

		sa->family = AF_IEEE802154;
		sa->addr.addr_type = IEEE802154_ADDR_SHORT;
		sa->addr.pan_id = pan_id;
		sa->addr.short_addr = short_addr;
		return 0;
	}
	return -ENOIOCTLCMD;
}

static int ieee802154_fake_mac_addr(struct net_device *dev, void *p)
{
	return -EBUSY; /* HW address is built into the device */
}

static const struct net_device_ops fake_ops = {
	.ndo_open		= ieee802154_fake_open,
	.ndo_stop		= ieee802154_fake_close,
	.ndo_start_xmit		= ieee802154_fake_xmit,
	.ndo_do_ioctl		= ieee802154_fake_ioctl,
	.ndo_set_mac_address	= ieee802154_fake_mac_addr,
};

static void ieee802154_fake_destruct(struct net_device *dev)
{
	struct wpan_phy *phy = fake_to_phy(dev);

	wpan_phy_unregister(phy);
	free_netdev(dev);
	wpan_phy_free(phy);
}

static void ieee802154_fake_setup(struct net_device *dev)
{
	dev->addr_len		= IEEE802154_ADDR_LEN;
	memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
	dev->features		= NETIF_F_HW_CSUM;
	dev->needed_tailroom	= 2; /* FCS */
	dev->mtu		= 127;
	dev->tx_queue_len	= 10;
	dev->type		= ARPHRD_IEEE802154;
	dev->flags		= IFF_NOARP | IFF_BROADCAST;
	dev->watchdog_timeo	= 0;
	dev->destructor		= ieee802154_fake_destruct;
}


static int ieee802154fake_probe(struct platform_device *pdev)
{
	struct net_device *dev;
	struct fakehard_priv *priv;
	struct wpan_phy *phy = wpan_phy_alloc(0);
	int err;

	if (!phy)
		return -ENOMEM;

	dev = alloc_netdev(sizeof(struct fakehard_priv), "hardwpan%d", ieee802154_fake_setup);
	if (!dev) {
		wpan_phy_free(phy);
		return -ENOMEM;
	}

	memcpy(dev->dev_addr, "\xba\xbe\xca\xfe\xde\xad\xbe\xef",
			dev->addr_len);

	/*
	 * For now we'd like to emulate 2.4 GHz-only device,
	 * both O-QPSK and CSS
	 */
	/* 2.4 GHz O-QPSK 802.15.4-2003 */
	phy->channels_supported[0] |= 0x7FFF800;
	/* 2.4 GHz CSS 802.15.4a-2007 */
	phy->channels_supported[3] |= 0x3fff;

	phy->transmit_power = 0xbf;

	dev->netdev_ops = &fake_ops;
	dev->ml_priv = &fake_mlme;

	priv = netdev_priv(dev);
	priv->phy = phy;

	wpan_phy_set_dev(phy, &pdev->dev);
	SET_NETDEV_DEV(dev, &phy->dev);

	platform_set_drvdata(pdev, dev);

	err = wpan_phy_register(phy);
	if (err)
		goto err_phy_reg;

	err = register_netdev(dev);
	if (err)
		goto err_netdev_reg;

	dev_info(&pdev->dev, "Added ieee802154 HardMAC hardware\n");
	return 0;

err_netdev_reg:
	wpan_phy_unregister(phy);
err_phy_reg:
	free_netdev(dev);
	wpan_phy_free(phy);
	return err;
}

static int ieee802154fake_remove(struct platform_device *pdev)
{
	struct net_device *dev = platform_get_drvdata(pdev);
	unregister_netdev(dev);
	return 0;
}

static struct platform_device *ieee802154fake_dev;

static struct platform_driver ieee802154fake_driver = {
	.probe = ieee802154fake_probe,
	.remove = ieee802154fake_remove,
	.driver = {
			.name = "ieee802154hardmac",
			.owner = THIS_MODULE,
	},
};

static __init int fake_init(void)
{
	ieee802154fake_dev = platform_device_register_simple(
			"ieee802154hardmac", -1, NULL, 0);
	return platform_driver_register(&ieee802154fake_driver);
}

static __exit void fake_exit(void)
{
	platform_driver_unregister(&ieee802154fake_driver);
	platform_device_unregister(ieee802154fake_dev);
}

module_init(fake_init);
module_exit(fake_exit);
MODULE_LICENSE("GPL");
Commit	Line	Data
8459464f SL	1	/*
	2	* Sample driver for HardMAC IEEE 802.15.4 devices
	3	*
	4	* Copyright (C) 2009 Siemens AG
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2
	8	* as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License along
	16	* with this program; if not, write to the Free Software Foundation, Inc.,
	17	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	18	*
	19	* Written by:
	20	* Dmitry Eremin-Solenikov <dmitry.baryshkov@siemens.com>
	21	*/
	22	#include <linux/kernel.h>
	23	#include <linux/module.h>
	24	#include <linux/platform_device.h>
	25	#include <linux/netdevice.h>
	26	#include <linux/skbuff.h>
	27	#include <linux/if_arp.h>
	28
f0166e5e DES	29	#include <net/af_ieee802154.h>
	30	#include <net/ieee802154_netdev.h>
	31	#include <net/ieee802154.h>
	32	#include <net/nl802154.h>
81f95103 DES	33	#include <net/wpan-phy.h>
81f95103 DES	34
405cd39f DES	35	struct fakehard_priv {
	36	struct wpan_phy *phy;
	37	};
	38
	39	static struct wpan_phy fake_to_phy(const struct net_device dev)
	40	{
	41	struct fakehard_priv *priv = netdev_priv(dev);
	42	return priv->phy;
	43	}
	44
	45	/**
	46	* fake_get_phy - Return a phy corresponding to this device.
	47	* @dev: The network device for which to return the wan-phy object
	48	*
	49	* This function returns a wpan-phy object corresponding to the passed
	50	* network device. Reference counter for wpan-phy object is incremented,
	51	* so when the wpan-phy isn't necessary, you should drop the reference
	52	* via @wpan_phy_put() call.
	53	*/
	54	static struct wpan_phy fake_get_phy(const struct net_device dev)
81f95103	55	{
405cd39f DES	56	struct wpan_phy *phy = fake_to_phy(dev);
405cd39f DES	57	return to_phy(get_device(&phy->dev));
81f95103	58	}
8459464f	59
878fa89f DS	60	/**
	61	* fake_get_pan_id - Retrieve the PAN ID of the device.
	62	* @dev: The network device to retrieve the PAN of.
	63	*
	64	* Return the ID of the PAN from the PIB.
	65	*/
a9966b58	66	static u16 fake_get_pan_id(const struct net_device *dev)
8459464f SL	67	{
	68	BUG_ON(dev->type != ARPHRD_IEEE802154);
	69
	70	return 0xeba1;
	71	}
	72
878fa89f DS	73	/**
	74	* fake_get_short_addr - Retrieve the short address of the device.
	75	* @dev: The network device to retrieve the short address of.
	76	*
	77	* Returns the IEEE 802.15.4 short-form address cached for this
	78	* device. If the device has not yet had a short address assigned
	79	* then this should return 0xFFFF to indicate a lack of association.
	80	*/
a9966b58	81	static u16 fake_get_short_addr(const struct net_device *dev)
8459464f SL	82	{
	83	BUG_ON(dev->type != ARPHRD_IEEE802154);
	84
	85	return 0x1;
	86	}
	87
878fa89f DS	88	/**
	89	* fake_get_dsn - Retrieve the DSN of the device.
	90	* @dev: The network device to retrieve the DSN for.
	91	*
	92	* Returns the IEEE 802.15.4 DSN for the network device.
	93	* The DSN is the sequence number which will be added to each
	94	* packet or MAC command frame by the MAC during transmission.
	95	*
	96	* DSN means 'Data Sequence Number'.
	97	*
	98	* Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
	99	* document.
	100	*/
a9966b58	101	static u8 fake_get_dsn(const struct net_device *dev)
8459464f SL	102	{
	103	BUG_ON(dev->type != ARPHRD_IEEE802154);
	104
	105	return 0x00; /* DSN are implemented in HW, so return just 0 */
	106	}
	107
878fa89f DS	108	/**
	109	* fake_assoc_req - Make an association request to the HW.
	110	* @dev: The network device which we are associating to a network.
	111	* @addr: The coordinator with which we wish to associate.
	112	* @channel: The channel on which to associate.
	113	* @cap: The capability information field to use in the association.
	114	*
	115	* Start an association with a coordinator. The coordinator's address
	116	* and PAN ID can be found in @addr.
	117	*
	118	* Note: This is in section 7.3.1 and 7.5.3.1 of the IEEE
	119	* 802.15.4-2006 document.
	120	*/
8459464f	121	static int fake_assoc_req(struct net_device *dev,
16eea493	122	struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap)
8459464f	123	{
405cd39f	124	struct wpan_phy *phy = fake_to_phy(dev);
81f95103 DES	125
	126	mutex_lock(&phy->pib_lock);
	127	phy->current_channel = channel;
16eea493	128	phy->current_page = page;
81f95103 DES	129	mutex_unlock(&phy->pib_lock);
81f95103 DES	130
8459464f SL	131	/* We simply emulate it here */
	132	return ieee802154_nl_assoc_confirm(dev, fake_get_short_addr(dev),
	133	IEEE802154_SUCCESS);
	134	}
	135
878fa89f DS	136	/**
	137	* fake_assoc_resp - Send an association response to a device.
	138	* @dev: The network device on which to send the response.
	139	* @addr: The address of the device to respond to.
	140	* @short_addr: The assigned short address for the device (if any).
	141	* @status: The result of the association request.
	142	*
	143	* Queue the association response of the coordinator to another
	144	* device's attempt to associate with the network which we
	145	* coordinate. This is then added to the indirect-send queue to be
	146	* transmitted to the end device when it polls for data.
	147	*
	148	* Note: This is in section 7.3.2 and 7.5.3.1 of the IEEE
	149	* 802.15.4-2006 document.
	150	*/
8459464f SL	151	static int fake_assoc_resp(struct net_device *dev,
	152	struct ieee802154_addr *addr, u16 short_addr, u8 status)
	153	{
	154	return 0;
	155	}
	156
878fa89f DS	157	/**
	158	* fake_disassoc_req - Disassociate a device from a network.
	159	* @dev: The network device on which we're disassociating a device.
	160	* @addr: The device to disassociate from the network.
	161	* @reason: The reason to give to the device for being disassociated.
	162	*
	163	* This sends a disassociation notification to the device being
	164	* disassociated from the network.
	165	*
	166	* Note: This is in section 7.5.3.2 of the IEEE 802.15.4-2006
	167	* document, with the reason described in 7.3.3.2.
	168	*/
8459464f SL	169	static int fake_disassoc_req(struct net_device *dev,
	170	struct ieee802154_addr *addr, u8 reason)
	171	{
	172	return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
	173	}
	174
878fa89f DS	175	/**
	176	* fake_start_req - Start an IEEE 802.15.4 PAN.
	177	* @dev: The network device on which to start the PAN.
	178	* @addr: The coordinator address to use when starting the PAN.
	179	* @channel: The channel on which to start the PAN.
	180	* @bcn_ord: Beacon order.
	181	* @sf_ord: Superframe order.
	182	* @pan_coord: Whether or not we are the PAN coordinator or just
	183	* requesting a realignment perhaps?
	184	* @blx: Battery Life Extension feature bitfield.
	185	* @coord_realign: Something to realign something else.
	186	*
	187	* If pan_coord is non-zero then this starts a network with the
	188	* provided parameters, otherwise it attempts a coordinator
	189	* realignment of the stated network instead.
	190	*
	191	* Note: This is in section 7.5.2.3 of the IEEE 802.15.4-2006
	192	* document, with 7.3.8 describing coordinator realignment.
878fa89f	193	*/
8459464f	194	static int fake_start_req(struct net_device dev, struct ieee802154_addr addr,
16eea493	195	u8 channel, u8 page,
8459464f SL	196	u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
	197	u8 coord_realign)
	198	{
405cd39f	199	struct wpan_phy *phy = fake_to_phy(dev);
81f95103 DES	200
	201	mutex_lock(&phy->pib_lock);
	202	phy->current_channel = channel;
16eea493	203	phy->current_page = page;
81f95103 DES	204	mutex_unlock(&phy->pib_lock);
81f95103 DES	205
798c752b DES	206	/* We don't emulate beacons here at all, so START should fail */
798c752b DES	207	ieee802154_nl_start_confirm(dev, IEEE802154_INVALID_PARAMETER);
8459464f SL	208	return 0;
	209	}
	210
878fa89f DS	211	/**
	212	* fake_scan_req - Start a channel scan.
	213	* @dev: The network device on which to perform a channel scan.
	214	* @type: The type of scan to perform.
	215	* @channels: The channel bitmask to scan.
	216	* @duration: How long to spend on each channel.
	217	*
	218	* This starts either a passive (energy) scan or an active (PAN) scan
	219	* on the channels indicated in the @channels bitmask. The duration of
	220	* the scan is measured in terms of superframe duration. Specifically,
	221	* the scan will spend aBaseSuperFrameDuration * ((2^n) + 1) on each
	222	* channel.
	223	*
	224	* Note: This is in section 7.5.2.1 of the IEEE 802.15.4-2006 document.
	225	*/
8459464f	226	static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
16eea493	227	u8 page, u8 duration)
8459464f SL	228	{
	229	u8 edl[27] = {};
	230	return ieee802154_nl_scan_confirm(dev, IEEE802154_SUCCESS, type,
16eea493	231	channels, page,
8459464f SL	232	type == IEEE802154_MAC_SCAN_ED ? edl : NULL);
	233	}
	234
	235	static struct ieee802154_mlme_ops fake_mlme = {
	236	.assoc_req = fake_assoc_req,
	237	.assoc_resp = fake_assoc_resp,
	238	.disassoc_req = fake_disassoc_req,
	239	.start_req = fake_start_req,
	240	.scan_req = fake_scan_req,
	241
405cd39f DES	242	.get_phy = fake_get_phy,
405cd39f DES	243
8459464f SL	244	.get_pan_id = fake_get_pan_id,
	245	.get_short_addr = fake_get_short_addr,
	246	.get_dsn = fake_get_dsn,
8459464f SL	247	};
	248
	249	static int ieee802154_fake_open(struct net_device *dev)
	250	{
	251	netif_start_queue(dev);
	252	return 0;
	253	}
	254
	255	static int ieee802154_fake_close(struct net_device *dev)
	256	{
	257	netif_stop_queue(dev);
	258	return 0;
	259	}
	260
61357325 SH	261	static netdev_tx_t ieee802154_fake_xmit(struct sk_buff *skb,
61357325 SH	262	struct net_device *dev)
8459464f	263	{
8459464f SL	264	dev->stats.tx_packets++;
	265	dev->stats.tx_bytes += skb->len;
	266
8459464f SL	267	/* FIXME: do hardware work here ... */
8459464f SL	268
56cf5483	269	dev_kfree_skb(skb);
6ed10654	270	return NETDEV_TX_OK;
8459464f SL	271	}
	272
	273
	274	static int ieee802154_fake_ioctl(struct net_device dev, struct ifreq ifr,
	275	int cmd)
	276	{
	277	struct sockaddr_ieee802154 *sa =
	278	(struct sockaddr_ieee802154 *)&ifr->ifr_addr;
	279	u16 pan_id, short_addr;
	280
	281	switch (cmd) {
	282	case SIOCGIFADDR:
	283	/* FIXME: fixed here, get from device IRL */
	284	pan_id = fake_get_pan_id(dev);
	285	short_addr = fake_get_short_addr(dev);
	286	if (pan_id == IEEE802154_PANID_BROADCAST \|\|
	287	short_addr == IEEE802154_ADDR_BROADCAST)
	288	return -EADDRNOTAVAIL;
	289
	290	sa->family = AF_IEEE802154;
	291	sa->addr.addr_type = IEEE802154_ADDR_SHORT;
	292	sa->addr.pan_id = pan_id;
	293	sa->addr.short_addr = short_addr;
	294	return 0;
	295	}
	296	return -ENOIOCTLCMD;
	297	}
	298
	299	static int ieee802154_fake_mac_addr(struct net_device dev, void p)
	300	{
	301	return -EBUSY; /* HW address is built into the device */
	302	}
	303
	304	static const struct net_device_ops fake_ops = {
	305	.ndo_open = ieee802154_fake_open,
	306	.ndo_stop = ieee802154_fake_close,
	307	.ndo_start_xmit = ieee802154_fake_xmit,
	308	.ndo_do_ioctl = ieee802154_fake_ioctl,
	309	.ndo_set_mac_address = ieee802154_fake_mac_addr,
	310	};
	311
81f95103 DES	312	static void ieee802154_fake_destruct(struct net_device *dev)
81f95103 DES	313	{
405cd39f	314	struct wpan_phy *phy = fake_to_phy(dev);
81f95103 DES	315
	316	wpan_phy_unregister(phy);
	317	free_netdev(dev);
	318	wpan_phy_free(phy);
	319	}
8459464f SL	320
	321	static void ieee802154_fake_setup(struct net_device *dev)
	322	{
	323	dev->addr_len = IEEE802154_ADDR_LEN;
	324	memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
34324dc2	325	dev->features = NETIF_F_HW_CSUM;
8459464f SL	326	dev->needed_tailroom = 2; /* FCS */
	327	dev->mtu = 127;
	328	dev->tx_queue_len = 10;
	329	dev->type = ARPHRD_IEEE802154;
	330	dev->flags = IFF_NOARP \| IFF_BROADCAST;
	331	dev->watchdog_timeo = 0;
81f95103	332	dev->destructor = ieee802154_fake_destruct;
8459464f SL	333	}
	334
	335
bb1f4606	336	static int ieee802154fake_probe(struct platform_device *pdev)
8459464f	337	{
81f95103	338	struct net_device *dev;
405cd39f	339	struct fakehard_priv *priv;
81f95103	340	struct wpan_phy *phy = wpan_phy_alloc(0);
8459464f SL	341	int err;
8459464f SL	342
81f95103 DES	343	if (!phy)
	344	return -ENOMEM;
	345
405cd39f	346	dev = alloc_netdev(sizeof(struct fakehard_priv), "hardwpan%d", ieee802154_fake_setup);
81f95103 DES	347	if (!dev) {
81f95103 DES	348	wpan_phy_free(phy);
8459464f	349	return -ENOMEM;
81f95103 DES	350	}
81f95103 DES	351
8459464f SL	352	memcpy(dev->dev_addr, "\xba\xbe\xca\xfe\xde\xad\xbe\xef",
8459464f SL	353	dev->addr_len);
8459464f	354
478e87c2 DES	355	/*
	356	* For now we'd like to emulate 2.4 GHz-only device,
	357	* both O-QPSK and CSS
	358	*/
	359	/* 2.4 GHz O-QPSK 802.15.4-2003 */
	360	phy->channels_supported[0] \|= 0x7FFF800;
	361	/* 2.4 GHz CSS 802.15.4a-2007 */
	362	phy->channels_supported[3] \|= 0x3fff;
	363
81f95103 DES	364	phy->transmit_power = 0xbf;
81f95103 DES	365
8459464f SL	366	dev->netdev_ops = &fake_ops;
	367	dev->ml_priv = &fake_mlme;
	368
405cd39f DES	369	priv = netdev_priv(dev);
	370	priv->phy = phy;
	371
e9cf356c	372	wpan_phy_set_dev(phy, &pdev->dev);
81f95103	373	SET_NETDEV_DEV(dev, &phy->dev);
8459464f SL	374
	375	platform_set_drvdata(pdev, dev);
	376
e9cf356c	377	err = wpan_phy_register(phy);
81f95103	378	if (err)
6b0bf252	379	goto err_phy_reg;
81f95103	380
8459464f	381	err = register_netdev(dev);
6b0bf252 AK	382	if (err)
6b0bf252 AK	383	goto err_netdev_reg;
8459464f	384
8459464f SL	385	dev_info(&pdev->dev, "Added ieee802154 HardMAC hardware\n");
	386	return 0;
	387
6b0bf252 AK	388	err_netdev_reg:
	389	wpan_phy_unregister(phy);
	390	err_phy_reg:
	391	free_netdev(dev);
	392	wpan_phy_free(phy);
8459464f SL	393	return err;
	394	}
	395
bb1f4606	396	static int ieee802154fake_remove(struct platform_device *pdev)
8459464f SL	397	{
	398	struct net_device *dev = platform_get_drvdata(pdev);
	399	unregister_netdev(dev);
8459464f SL	400	return 0;
	401	}
	402
	403	static struct platform_device *ieee802154fake_dev;
	404
	405	static struct platform_driver ieee802154fake_driver = {
	406	.probe = ieee802154fake_probe,
bb1f4606	407	.remove = ieee802154fake_remove,
8459464f SL	408	.driver = {
	409	.name = "ieee802154hardmac",
	410	.owner = THIS_MODULE,
	411	},
	412	};
	413
	414	static __init int fake_init(void)
	415	{
	416	ieee802154fake_dev = platform_device_register_simple(
	417	"ieee802154hardmac", -1, NULL, 0);
	418	return platform_driver_register(&ieee802154fake_driver);
	419	}
	420
	421	static __exit void fake_exit(void)
	422	{
	423	platform_driver_unregister(&ieee802154fake_driver);
	424	platform_device_unregister(ieee802154fake_dev);
	425	}
	426
	427	module_init(fake_init);
	428	module_exit(fake_exit);
	429	MODULE_LICENSE("GPL");