hostap_cs.c

linux内核源码

		       "(%d)\n", res);
		return;
	}
	mdelay(10);

	reg.Action = CS_WRITE;
	reg.Offset = CISREG_COR;
	reg.Value = old_cor & ~COR_SOFT_RESET;
	res = pcmcia_access_configuration_register(hw_priv->link,
						   &reg);
	if (res != CS_SUCCESS) {
		printk(KERN_DEBUG "prism2_pccard_genesis_sreset failed 4 "
		       "(%d)\n", res);
		return;
	}

	mdelay(10);
}


static struct prism2_helper_functions prism2_pccard_funcs =
{
	.card_present	= prism2_pccard_card_present,
	.cor_sreset	= prism2_pccard_cor_sreset,
	.genesis_reset	= prism2_pccard_genesis_reset,
	.hw_type	= HOSTAP_HW_PCCARD,
};


/* allocate local data and register with CardServices
 * initialize dev_link structure, but do not configure the card yet */
static int hostap_cs_probe(struct pcmcia_device *p_dev)
{
	int ret;

	PDEBUG(DEBUG_HW, "%s: setting Vcc=33 (constant)\n", dev_info);
	p_dev->conf.IntType = INT_MEMORY_AND_IO;

	ret = prism2_config(p_dev);
	if (ret) {
		PDEBUG(DEBUG_EXTRA, "prism2_config() failed\n");
	}

	return ret;
}


static void prism2_detach(struct pcmcia_device *link)
{
	PDEBUG(DEBUG_FLOW, "prism2_detach\n");

	prism2_release((u_long)link);

	/* release net devices */
	if (link->priv) {
		struct hostap_cs_priv *hw_priv;
		struct net_device *dev;
		struct hostap_interface *iface;
		dev = link->priv;
		iface = netdev_priv(dev);
		hw_priv = iface->local->hw_priv;
		prism2_free_local_data(dev);
		kfree(hw_priv);
	}
}


#define CS_CHECK(fn, ret) \
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)

#define CFG_CHECK2(fn, retf) \
do { int ret = (retf); \
if (ret != 0) { \
	PDEBUG(DEBUG_EXTRA, "CardServices(" #fn ") returned %d\n", ret); \
	cs_error(link, fn, ret); \
	goto next_entry; \
} \
} while (0)


/* run after a CARD_INSERTION event is received to configure the PCMCIA
 * socket and make the device available to the system */
static int prism2_config(struct pcmcia_device *link)
{
	struct net_device *dev;
	struct hostap_interface *iface;
	local_info_t *local;
	int ret = 1;
	tuple_t tuple;
	cisparse_t *parse;
	int last_fn, last_ret;
	u_char buf[64];
	config_info_t conf;
	cistpl_cftable_entry_t dflt = { 0 };
	struct hostap_cs_priv *hw_priv;

	PDEBUG(DEBUG_FLOW, "prism2_config()\n");

	parse = kmalloc(sizeof(cisparse_t), GFP_KERNEL);
	hw_priv = kzalloc(sizeof(*hw_priv), GFP_KERNEL);
	if (parse == NULL || hw_priv == NULL) {
		ret = -ENOMEM;
		goto failed;
	}

	tuple.Attributes = 0;
	tuple.TupleData = buf;
	tuple.TupleDataMax = sizeof(buf);
	tuple.TupleOffset = 0;

	CS_CHECK(GetConfigurationInfo,
		 pcmcia_get_configuration_info(link, &conf));

	/* Look for an appropriate configuration table entry in the CIS */
	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
	CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
	for (;;) {
		cistpl_cftable_entry_t *cfg = &(parse->cftable_entry);
		CFG_CHECK2(GetTupleData,
			   pcmcia_get_tuple_data(link, &tuple));
		CFG_CHECK2(ParseTuple,
			   pcmcia_parse_tuple(link, &tuple, parse));

		if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
			dflt = *cfg;
		if (cfg->index == 0)
			goto next_entry;
		link->conf.ConfigIndex = cfg->index;
		PDEBUG(DEBUG_EXTRA, "Checking CFTABLE_ENTRY 0x%02X "
		       "(default 0x%02X)\n", cfg->index, dflt.index);

		/* Does this card need audio output? */
		if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
			link->conf.Attributes |= CONF_ENABLE_SPKR;
			link->conf.Status = CCSR_AUDIO_ENA;
		}

		/* Use power settings for Vcc and Vpp if present */
		/*  Note that the CIS values need to be rescaled */
		if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
			if (conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM] /
			    10000 && !ignore_cis_vcc) {
				PDEBUG(DEBUG_EXTRA, "  Vcc mismatch - skipping"
				       " this entry\n");
				goto next_entry;
			}
		} else if (dflt.vcc.present & (1 << CISTPL_POWER_VNOM)) {
			if (conf.Vcc != dflt.vcc.param[CISTPL_POWER_VNOM] /
			    10000 && !ignore_cis_vcc) {
				PDEBUG(DEBUG_EXTRA, "  Vcc (default) mismatch "
				       "- skipping this entry\n");
				goto next_entry;
			}
		}

		if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
			link->conf.Vpp =
				cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
		else if (dflt.vpp1.present & (1 << CISTPL_POWER_VNOM))
			link->conf.Vpp =
				dflt.vpp1.param[CISTPL_POWER_VNOM] / 10000;

		/* Do we need to allocate an interrupt? */
		if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
			link->conf.Attributes |= CONF_ENABLE_IRQ;
		else if (!(link->conf.Attributes & CONF_ENABLE_IRQ)) {
			/* At least Compaq WL200 does not have IRQInfo1 set,
			 * but it does not work without interrupts.. */
			printk("Config has no IRQ info, but trying to enable "
			       "IRQ anyway..\n");
			link->conf.Attributes |= CONF_ENABLE_IRQ;
		}

		/* IO window settings */
		PDEBUG(DEBUG_EXTRA, "IO window settings: cfg->io.nwin=%d "
		       "dflt.io.nwin=%d\n",
		       cfg->io.nwin, dflt.io.nwin);
		link->io.NumPorts1 = link->io.NumPorts2 = 0;
		if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
			cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
			link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
			PDEBUG(DEBUG_EXTRA, "io->flags = 0x%04X, "
			       "io.base=0x%04x, len=%d\n", io->flags,
			       io->win[0].base, io->win[0].len);
			if (!(io->flags & CISTPL_IO_8BIT))
				link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
			if (!(io->flags & CISTPL_IO_16BIT))
				link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
			link->io.IOAddrLines = io->flags &
				CISTPL_IO_LINES_MASK;
			link->io.BasePort1 = io->win[0].base;
			link->io.NumPorts1 = io->win[0].len;
			if (io->nwin > 1) {
				link->io.Attributes2 = link->io.Attributes1;
				link->io.BasePort2 = io->win[1].base;
				link->io.NumPorts2 = io->win[1].len;
			}
		}

		/* This reserves IO space but doesn't actually enable it */
		CFG_CHECK2(RequestIO,
			   pcmcia_request_io(link, &link->io));

		/* This configuration table entry is OK */
		break;

	next_entry:
		CS_CHECK(GetNextTuple,
			 pcmcia_get_next_tuple(link, &tuple));
	}

	/* Need to allocate net_device before requesting IRQ handler */
	dev = prism2_init_local_data(&prism2_pccard_funcs, 0,
				     &handle_to_dev(link));
	if (dev == NULL)
		goto failed;
	link->priv = dev;

	iface = netdev_priv(dev);
	local = iface->local;
	local->hw_priv = hw_priv;
	hw_priv->link = link;
	strcpy(hw_priv->node.dev_name, dev->name);
	link->dev_node = &hw_priv->node;

	/*
	 * Allocate an interrupt line.  Note that this does not assign a
	 * handler to the interrupt, unless the 'Handler' member of the
	 * irq structure is initialized.
	 */
	if (link->conf.Attributes & CONF_ENABLE_IRQ) {
		link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
		link->irq.IRQInfo1 = IRQ_LEVEL_ID;
		link->irq.Handler = prism2_interrupt;
		link->irq.Instance = dev;
		CS_CHECK(RequestIRQ,
			 pcmcia_request_irq(link, &link->irq));
	}

	/*
	 * This actually configures the PCMCIA socket -- setting up
	 * the I/O windows and the interrupt mapping, and putting the
	 * card and host interface into "Memory and IO" mode.
	 */
	CS_CHECK(RequestConfiguration,
		 pcmcia_request_configuration(link, &link->conf));

	dev->irq = link->irq.AssignedIRQ;
	dev->base_addr = link->io.BasePort1;

	/* Finally, report what we've done */
	printk(KERN_INFO "%s: index 0x%02x: ",
	       dev_info, link->conf.ConfigIndex);
	if (link->conf.Vpp)
		printk(", Vpp %d.%d", link->conf.Vpp / 10,
		       link->conf.Vpp % 10);
	if (link->conf.Attributes & CONF_ENABLE_IRQ)
		printk(", irq %d", link->irq.AssignedIRQ);
	if (link->io.NumPorts1)
		printk(", io 0x%04x-0x%04x", link->io.BasePort1,
		       link->io.BasePort1+link->io.NumPorts1-1);
	if (link->io.NumPorts2)
		printk(" & 0x%04x-0x%04x", link->io.BasePort2,
		       link->io.BasePort2+link->io.NumPorts2-1);
	printk("\n");

	local->shutdown = 0;

	sandisk_enable_wireless(dev);

	ret = prism2_hw_config(dev, 1);
	if (!ret) {
		ret = hostap_hw_ready(dev);
		if (ret == 0 && local->ddev)
			strcpy(hw_priv->node.dev_name, local->ddev->name);
	}
	kfree(parse);
	return ret;

 cs_failed:
	cs_error(link, last_fn, last_ret);

 failed:
	kfree(parse);
	kfree(hw_priv);
	prism2_release((u_long)link);
	return ret;
}


static void prism2_release(u_long arg)
{
	struct pcmcia_device *link = (struct pcmcia_device *)arg;

	PDEBUG(DEBUG_FLOW, "prism2_release\n");

	if (link->priv) {
		struct net_device *dev = link->priv;
		struct hostap_interface *iface;

		iface = netdev_priv(dev);
		prism2_hw_shutdown(dev, 0);
		iface->local->shutdown = 1;
	}

	pcmcia_disable_device(link);
	PDEBUG(DEBUG_FLOW, "release - done\n");
}

static int hostap_cs_suspend(struct pcmcia_device *link)
{
	struct net_device *dev = (struct net_device *) link->priv;
	int dev_open = 0;
	struct hostap_interface *iface = NULL;

	if (dev)
		iface = netdev_priv(dev);

	PDEBUG(DEBUG_EXTRA, "%s: CS_EVENT_PM_SUSPEND\n", dev_info);
	if (iface && iface->local)
		dev_open = iface->local->num_dev_open > 0;
	if (dev_open) {
		netif_stop_queue(dev);
		netif_device_detach(dev);
	}
	prism2_suspend(dev);

	return 0;
}

static int hostap_cs_resume(struct pcmcia_device *link)
{
	struct net_device *dev = (struct net_device *) link->priv;
	int dev_open = 0;
	struct hostap_interface *iface = NULL;

	if (dev)
		iface = netdev_priv(dev);

	PDEBUG(DEBUG_EXTRA, "%s: CS_EVENT_PM_RESUME\n", dev_info);

	if (iface && iface->local)
		dev_open = iface->local->num_dev_open > 0;

	prism2_hw_shutdown(dev, 1);
	prism2_hw_config(dev, dev_open ? 0 : 1);
	if (dev_open) {
		netif_device_attach(dev);
		netif_start_queue(dev);
	}

	return 0;
}

static struct pcmcia_device_id hostap_cs_ids[] = {
	PCMCIA_DEVICE_MANF_CARD(0x000b, 0x7100),
	PCMCIA_DEVICE_MANF_CARD(0x000b, 0x7300),
	PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0777),
	PCMCIA_DEVICE_MANF_CARD(0x0126, 0x8000),
	PCMCIA_DEVICE_MANF_CARD(0x0138, 0x0002),
	PCMCIA_DEVICE_MANF_CARD(0x01bf, 0x3301),
	PCMCIA_DEVICE_MANF_CARD(0x0250, 0x0002),
	PCMCIA_DEVICE_MANF_CARD(0x026f, 0x030b),
	PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1612),
	PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1613),
	PCMCIA_DEVICE_MANF_CARD(0x028a, 0x0002),
	PCMCIA_DEVICE_MANF_CARD(0x02aa, 0x0002),
	PCMCIA_DEVICE_MANF_CARD(0x02d2, 0x0001),
	PCMCIA_DEVICE_MANF_CARD(0x50c2, 0x0001),
	PCMCIA_DEVICE_MANF_CARD(0x50c2, 0x7300),
/*	PCMCIA_DEVICE_MANF_CARD(0xc00f, 0x0000),    conflict with pcnet_cs */
	PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0002),
	PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0005),
	PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0010),
	PCMCIA_DEVICE_MANF_CARD(0x0126, 0x0002),
	PCMCIA_DEVICE_MANF_CARD_PROD_ID1(0xd601, 0x0005, "ADLINK 345 CF",
					 0x2d858104),
	PCMCIA_DEVICE_MANF_CARD_PROD_ID1(0x0156, 0x0002, "INTERSIL",
					 0x74c5e40d),
	PCMCIA_DEVICE_MANF_CARD_PROD_ID1(0x0156, 0x0002, "Intersil",
					 0x4b801a17),
	PCMCIA_MFC_DEVICE_PROD_ID12(0, "SanDisk", "ConnectPlus",
				    0x7a954bd9, 0x74be00c6),
	PCMCIA_DEVICE_PROD_ID1234(
		"Intersil", "PRISM 2_5 PCMCIA ADAPTER",	"ISL37300P",
		"Eval-RevA",
		0x4b801a17, 0x6345a0bf, 0xc9049a39, 0xc23adc0e),
	/* D-Link DWL-650 Rev. P1; manfid 0x000b, 0x7110 */
	PCMCIA_DEVICE_PROD_ID1234(
		"D-Link", "DWL-650 Wireless PC Card RevP", "ISL37101P-10",
		"A3",
		0x1a424a1c, 0x6ea57632, 0xdd97a26b, 0x56b21f52),
	PCMCIA_DEVICE_PROD_ID123(
		"Addtron", "AWP-100 Wireless PCMCIA", "Version 01.02",
		0xe6ec52ce, 0x08649af2, 0x4b74baa0),
	PCMCIA_DEVICE_PROD_ID123(
		"D", "Link DWL-650 11Mbps WLAN Card", "Version 01.02",
		0x71b18589, 0xb6f1b0ab, 0x4b74baa0),
	PCMCIA_DEVICE_PROD_ID123(
		"Instant Wireless ", " Network PC CARD", "Version 01.02",
		0x11d901af, 0x6e9bd926, 0x4b74baa0),
	PCMCIA_DEVICE_PROD_ID123(
		"SMC", "SMC2632W", "Version 01.02",
		0xc4f8b18b, 0x474a1f2a, 0x4b74baa0),
	PCMCIA_DEVICE_PROD_ID12("BUFFALO", "WLI-CF-S11G", 
				0x2decece3, 0x82067c18),
	PCMCIA_DEVICE_PROD_ID12("Compaq", "WL200_11Mbps_Wireless_PCI_Card",
				0x54f7c49c, 0x15a75e5b),
	PCMCIA_DEVICE_PROD_ID12("INTERSIL", "HFA384x/IEEE",
				0x74c5e40d, 0xdb472a18),
	PCMCIA_DEVICE_PROD_ID12("Linksys", "Wireless CompactFlash Card",
				0x0733cc81, 0x0c52f395),
	PCMCIA_DEVICE_PROD_ID12(
		"ZoomAir 11Mbps High", "Rate wireless Networking",
		0x273fe3db, 0x32a1eaee),
	PCMCIA_DEVICE_PROD_ID123(
		"Pretec", "CompactWLAN Card 802.11b", "2.5",
		0x1cadd3e5, 0xe697636c, 0x7a5bfcf1),
	PCMCIA_DEVICE_PROD_ID123(
		"U.S. Robotics", "IEEE 802.11b PC-CARD", "Version 01.02",
		0xc7b8df9d, 0x1700d087, 0x4b74baa0),
	PCMCIA_DEVICE_PROD_ID123(
		"Allied Telesyn", "AT-WCL452 Wireless PCMCIA Radio",
		"Ver. 1.00",
		0x5cd01705, 0x4271660f, 0x9d08ee12),
	PCMCIA_DEVICE_PROD_ID123(
		"corega", "WL PCCL-11", "ISL37300P",
		0xa21501a, 0x59868926, 0xc9049a39),
	PCMCIA_DEVICE_PROD_ID1234(
		"The Linksys Group, Inc.", "Wireless Network CF Card", "ISL37300P",
		"RevA",
		0xa5f472c2, 0x9c05598d, 0xc9049a39, 0x57a66194),
	PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, hostap_cs_ids);


static struct pcmcia_driver hostap_driver = {
	.drv		= {
		.name	= "hostap_cs",
	},
	.probe		= hostap_cs_probe,
	.remove		= prism2_detach,
	.owner		= THIS_MODULE,
	.id_table	= hostap_cs_ids,
	.suspend	= hostap_cs_suspend,
	.resume		= hostap_cs_resume,
};

static int __init init_prism2_pccard(void)
{
	return pcmcia_register_driver(&hostap_driver);
}

static void __exit exit_prism2_pccard(void)
{
	pcmcia_unregister_driver(&hostap_driver);
}


module_init(init_prism2_pccard);
module_exit(exit_prism2_pccard);