hostap_cs.c

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#define PRISM2_PCCARD

#include <linux/config.h>
#ifdef  __IN_PCMCIA_PACKAGE__
#include <pcmcia/k_compat.h>
#endif /* __IN_PCMCIA_PACKAGE__ */
#include <linux/version.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/if.h>
#include <linux/wait.h>
#include <linux/timer.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,44))
#include <linux/tqueue.h>
#else
#include <linux/workqueue.h>
#endif
#include "hostap_wext.h"

#include <pcmcia/version.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>

#include <asm/io.h>

#include "hostap_wlan.h"


#ifdef __IN_PCMCIA_PACKAGE__
#include <pcmcia/config.h>
#endif /* __IN_PCMCIA_PACKAGE__ */

#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
/* This behavior changed in some Linux 2.5.x version. I don't remember when and
 * don't really care if this does not work with some early 2.5.x versions..
 */
#define HOSTAP_USE_RELEASE_TIMER
#endif


static char *version = PRISM2_VERSION " (Jouni Malinen <jkmaline@cc.hut.fi>)";
static dev_info_t dev_info = "hostap_cs";
static dev_link_t *dev_list = NULL;

MODULE_AUTHOR("SSH Communications Security Corp, Jouni Malinen");
MODULE_DESCRIPTION("Support for Intersil Prism2-based 802.11 wireless LAN "
                   "cards (PC Card).");
MODULE_SUPPORTED_DEVICE("Intersil Prism2-based WLAN cards (PC Card)");
MODULE_LICENSE("GPL");


static unsigned int irq_mask = 0xdeb8;
MODULE_PARM(irq_mask, "i");

static int irq_list[4] = { -1 };
MODULE_PARM(irq_list, "1-4i");

static int ignore_cis_vcc = 0;
MODULE_PARM(ignore_cis_vcc, "i");
MODULE_PARM_DESC(ignore_cis_vcc, "Ignore broken CIS VCC entry");


#ifdef PRISM2_IO_DEBUG

static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
{
        struct hostap_interface *iface = dev->priv;
        local_info_t *local = iface->local;
        unsigned long flags;

        spin_lock_irqsave(&local->lock, flags);
        prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
        outb(v, dev->base_addr + a);
        spin_unlock_irqrestore(&local->lock, flags);
}

static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
{
        struct hostap_interface *iface = dev->priv;
        local_info_t *local = iface->local;
        unsigned long flags;
        u8 v;

        spin_lock_irqsave(&local->lock, flags);
        v = inb(dev->base_addr + a);
        prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v);
        spin_unlock_irqrestore(&local->lock, flags);
        return v;
}

static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
{
        struct hostap_interface *iface = dev->priv;
        local_info_t *local = iface->local;
        unsigned long flags;

        spin_lock_irqsave(&local->lock, flags);
        prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
        outw(v, dev->base_addr + a);
        spin_unlock_irqrestore(&local->lock, flags);
}

static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
{
        struct hostap_interface *iface = dev->priv;
        local_info_t *local = iface->local;
        unsigned long flags;
        u16 v;

        spin_lock_irqsave(&local->lock, flags);
        v = inw(dev->base_addr + a);
        prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
        spin_unlock_irqrestore(&local->lock, flags);
        return v;
}

static inline void hfa384x_outsw_debug(struct net_device *dev, int a,
                                       u8 *buf, int wc)
{
        struct hostap_interface *iface = dev->priv;
        local_info_t *local = iface->local;
        unsigned long flags;

        spin_lock_irqsave(&local->lock, flags);
        prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTSW, a, wc);
        outsw(dev->base_addr + a, buf, wc);
        spin_unlock_irqrestore(&local->lock, flags);
}

static inline void hfa384x_insw_debug(struct net_device *dev, int a,
                                      u8 *buf, int wc)
{
        struct hostap_interface *iface = dev->priv;
        local_info_t *local = iface->local;
        unsigned long flags;

        spin_lock_irqsave(&local->lock, flags);
        prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INSW, a, wc);
        insw(dev->base_addr + a, buf, wc);
        spin_unlock_irqrestore(&local->lock, flags);
}

#define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v))
#define HFA384X_INB(a) hfa384x_inb_debug(dev, (a))
#define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v))
#define HFA384X_INW(a) hfa384x_inw_debug(dev, (a))
#define HFA384X_OUTSW(a, buf, wc) hfa384x_outsw_debug(dev, (a), (buf), (wc))
#define HFA384X_INSW(a, buf, wc) hfa384x_insw_debug(dev, (a), (buf), (wc))

#else /* PRISM2_IO_DEBUG */

#define HFA384X_OUTB(v,a) outb((v), dev->base_addr + (a))
#define HFA384X_INB(a) inb(dev->base_addr + (a))
#define HFA384X_OUTW(v,a) outw((v), dev->base_addr + (a))
#define HFA384X_INW(a) inw(dev->base_addr + (a))
#define HFA384X_INSW(a, buf, wc) insw(dev->base_addr + (a), buf, wc)
#define HFA384X_OUTSW(a, buf, wc) outsw(dev->base_addr + (a), buf, wc)

#endif /* PRISM2_IO_DEBUG */


static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
                            int len)
{
        u16 d_off;
        u16 *pos;

        d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
        pos = (u16 *) buf;

        if (len / 2)
                HFA384X_INSW(d_off, buf, len / 2);
        pos += len / 2;

        if (len & 1)
                *((char *) pos) = HFA384X_INB(d_off);

        return 0;
}


static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
{
        u16 d_off;
        u16 *pos;

        d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
        pos = (u16 *) buf;

        if (len / 2)
                HFA384X_OUTSW(d_off, buf, len / 2);
        pos += len / 2;

        if (len & 1)
                HFA384X_OUTB(*((char *) pos), d_off);

        return 0;
}


/* FIX: This might change at some point.. */
#include "hostap_hw.c"



static void prism2_detach(dev_link_t *link);
static void prism2_release(u_long arg);
static int prism2_event(event_t event, int priority,
                        event_callback_args_t *args);


static int prism2_pccard_card_present(local_info_t *local)
{
        if (local->link != NULL &&
            ((local->link->state & (DEV_PRESENT | DEV_CONFIG)) ==
             (DEV_PRESENT | DEV_CONFIG)))
                return 1;
        return 0;
}

static void prism2_pccard_cor_sreset(local_info_t *local)
{
        int res;
        conf_reg_t reg;

        if (!prism2_pccard_card_present(local))
               return;

        reg.Function = 0;
        reg.Action = CS_READ;
        reg.Offset = CISREG_COR;
        reg.Value = 0;
        res = pcmcia_access_configuration_register(local->link->handle, &reg);
        if (res != CS_SUCCESS) {
                printk(KERN_DEBUG "prism2_pccard_cor_sreset failed 1 (%d)\n",
                       res);
                return;
        }
        printk(KERN_DEBUG "prism2_pccard_cor_sreset: original COR %02x\n",
               reg.Value);

        reg.Action = CS_WRITE;
        reg.Value |= COR_SOFT_RESET;
        res = pcmcia_access_configuration_register(local->link->handle, &reg);
        if (res != CS_SUCCESS) {
                printk(KERN_DEBUG "prism2_pccard_cor_sreset failed 2 (%d)\n",
                       res);
                return;
        }

        mdelay(1);

        reg.Value &= ~COR_SOFT_RESET;
        res = pcmcia_access_configuration_register(local->link->handle, &reg);
        if (res != CS_SUCCESS) {
                printk(KERN_DEBUG "prism2_pccard_cor_sreset failed 3 (%d)\n",
                       res);
                return;
        }

        mdelay(1);
}


static void prism2_pccard_genesis_reset(local_info_t *local, int hcr)
{
        int res;
        conf_reg_t reg;
        int old_cor;

        if (!prism2_pccard_card_present(local))
               return;

        reg.Function = 0;
        reg.Action = CS_READ;
        reg.Offset = CISREG_COR;
        reg.Value = 0;
        res = pcmcia_access_configuration_register(local->link->handle, &reg);
        if (res != CS_SUCCESS) {
                printk(KERN_DEBUG "prism2_pccard_genesis_sreset failed 1 "
                       "(%d)\n", res);
                return;
        }
        printk(KERN_DEBUG "prism2_pccard_genesis_sreset: original COR %02x\n",
               reg.Value);
        old_cor = reg.Value;

        reg.Action = CS_WRITE;
        reg.Value |= COR_SOFT_RESET;
        res = pcmcia_access_configuration_register(local->link->handle, &reg);
        if (res != CS_SUCCESS) {
                printk(KERN_DEBUG "prism2_pccard_genesis_sreset failed 2 "
                       "(%d)\n", res);
                return;
        }

        mdelay(10);

        /* Setup Genesis mode */
        reg.Action = CS_WRITE;
        reg.Value = hcr;
        reg.Offset = CISREG_CCSR;
        res = pcmcia_access_configuration_register(local->link->handle, &reg);
        if (res != CS_SUCCESS) {
                printk(KERN_DEBUG "prism2_pccard_genesis_sreset failed 3 "
                       "(%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(local->link->handle, &reg);
        if (res != CS_SUCCESS) {
                printk(KERN_DEBUG "prism2_pccard_genesis_sreset failed 4 "
                       "(%d)\n", res);
                return;
        }

        mdelay(10);
}


static int prism2_pccard_dev_open(local_info_t *local)
{
        local->link->open++;
        return 0;
}


static int prism2_pccard_dev_close(local_info_t *local)
{
        if (local == NULL || local->link == NULL)
                return 1;

        if (!local->link->open) {
                printk(KERN_WARNING "%s: prism2_pccard_dev_close(): "
                       "link not open?!\n", local->dev->name);
                return 1;
        }

        local->link->open--;

        if (local->link->state & DEV_STALE_CONFIG) {
#ifdef HOSTAP_USE_RELEASE_TIMER
                mod_timer(&local->link->release, jiffies + HZ / 20);
#else /* HOSTAP_USE_RELEASE_TIMER */
                prism2_release((u_long) local->link);
#endif /* HOSTAP_USE_RELEASE_TIMER */
        }

        return 0;
}


static struct prism2_helper_functions prism2_pccard_funcs =
{
        .card_present   = prism2_pccard_card_present,
        .cor_sreset     = prism2_pccard_cor_sreset,
        .dev_open       = prism2_pccard_dev_open,
        .dev_close      = prism2_pccard_dev_close,
        .genesis_reset  = prism2_pccard_genesis_reset,
};


#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,68)
static void cs_error(client_handle_t handle, int func, int ret)
{
        error_info_t err = { func, ret };
        pcmcia_report_error(handle, &err);
}
#endif


/* allocate local data and register with CardServices
 * initialize dev_link structure, but do not configure the card yet */
static dev_link_t *prism2_attach(void)
{
        dev_link_t *link;
        local_info_t *local;
        client_reg_t client_reg;
        int ret;
        struct net_device *dev;
        struct hostap_interface *iface;

        for (link = dev_list; link; link = link->next) {
                if (link->state & DEV_STALE_LINK) {
                        printk("%s: flushing stale link\n", dev_info);
                        prism2_detach(link);
                }
        }

        link = kmalloc(sizeof(dev_link_t), GFP_KERNEL);
        if (link == NULL)
                return NULL;

        memset(link, 0, sizeof(dev_link_t));

        dev = prism2_init_local_data(&prism2_pccard_funcs, 0);
        if (dev == NULL) {
                kfree(link);
                return NULL;
        }
        iface = dev->priv;
        local = iface->local;

        link->priv = dev;
        local->link = link;

#ifdef HOSTAP_USE_RELEASE_TIMER
        init_timer(&link->release);
        link->release.function = &prism2_release;
        link->release.data = (u_long)link;
#endif /* HOSTAP_USE_RELEASE_TIMER */

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

        /* register with CardServices */
        link->next = dev_list;
        dev_list = link;
        client_reg.dev_info = &dev_info;
        client_reg.Attributes = INFO_IO_CLIENT;
        client_reg.EventMask = CS_EVENT_CARD_INSERTION |
                CS_EVENT_CARD_REMOVAL |
                CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
                CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
        client_reg.event_handler = &prism2_event;
        client_reg.Version = 0x0210;
        client_reg.event_callback_args.client_data = link;
        ret = pcmcia_register_client(&link->handle, &client_reg);
        if (ret != CS_SUCCESS) {
                cs_error(link->handle, RegisterClient, ret);
                prism2_detach(link);
                return NULL;
        }
        return link;
}


static void prism2_detach(dev_link_t *link)
{
        dev_link_t **linkp;

        PDEBUG(DEBUG_FLOW, "prism2_detach\n");

        for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
                if (*linkp == link)
                        break;
        if (*linkp == NULL) {
                printk(KERN_WARNING "%s: Attempt to detach non-existing "
                       "PCMCIA client\n", dev_info);
                return;
        }

#ifdef HOSTAP_USE_RELEASE_TIMER
        del_timer(&link->release);
#endif /* HOSTAP_USE_RELEASE_TIMER */
        if (link->state & DEV_CONFIG) {
                printk("%s: detach postponed, '%s' still locked\n",
                       dev_info, link->dev->dev_name);
                prism2_release((u_long)link);
                if (link->state & DEV_STALE_CONFIG) {
                        link->state |= DEV_STALE_LINK;
                        return;
                }
        }

        if (link->handle) {
                int res = pcmcia_deregister_client(link->handle);
                if (res) {
                        printk("CardService(DeregisterClient) => %d\n", res);
                        cs_error(link->handle, DeregisterClient, res);
                }
        }

        *linkp = link->next;
        /* release net devices */
        if (link->priv) {
                prism2_free_local_data((struct net_device *) link->priv);

        }
        kfree(link);
}


#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->handle, fn, ret); \
        goto next_entry; \
} \
} while (0)


/* run after a CARD_INSERTATION event is received to configure the PCMCIA
 * socket and make the device available to the system */
static int prism2_config(dev_link_t *link)
{
        struct net_device *dev = (struct net_device *) link->priv;
        struct hostap_interface *iface = dev->priv;
        local_info_t *local = iface->local;
        int ret;
        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 };

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

        tuple.DesiredTuple = CISTPL_CONFIG;
        tuple.Attributes = 0;
        tuple.TupleData = buf;
        tuple.TupleDataMax = sizeof(buf);
        tuple.TupleOffset = 0;
        CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link->handle, &tuple));
        CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link->handle, &tuple));
        CS_CHECK(ParseTuple, pcmcia_parse_tuple(link->handle, &tuple, &parse));
        link->conf.ConfigBase = parse.config.base;
        link->conf.Present = parse.config.rmask[0];

        CS_CHECK(GetConfigurationInfo,
                 pcmcia_get_configuration_info(link->handle, &conf));
        PDEBUG(DEBUG_HW, "%s: %s Vcc=%d (from config)\n", dev_info,
               ignore_cis_vcc ? "ignoring" : "setting", conf.Vcc);
        link->conf.Vcc = conf.Vcc;

        /* Look for an appropriate configuration table entry in the CIS */
        tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
        CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link->handle, &tuple));
        for (;;) {
                cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
                CFG_CHECK2(GetTupleData,
                           pcmcia_get_tuple_data(link->handle, &tuple));
                CFG_CHECK2(ParseTuple,
                           pcmcia_parse_tuple(link->handle, &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.Vpp1 = link->conf.Vpp2 =
                                cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
                else if (dflt.vpp1.present & (1 << CISTPL_POWER_VNOM))
                        link->conf.Vpp1 = link->conf.Vpp2 =
                                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->handle, &link->io));

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

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

        /*
         * 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) {
                int i;
                link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
                link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
                if (irq_list[0] == -1)
                        link->irq.IRQInfo2 = irq_mask;
                else
                        for (i = 0; i < 4; i++)
                                link->irq.IRQInfo2 |= 1 << irq_list[i];
                link->irq.Handler = (void *) prism2_interrupt;
                link->irq.Instance = dev;
                CS_CHECK(RequestIRQ,
                         pcmcia_request_irq(link->handle, &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->handle, &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: Vcc %d.%d",
               dev_info, link->conf.ConfigIndex,
               link->conf.Vcc / 10, link->conf.Vcc % 10);
        if (link->conf.Vpp1)
                printk(", Vpp %d.%d", link->conf.Vpp1 / 10,
                       link->conf.Vpp1 % 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");

        link->state |= DEV_CONFIG;
        link->state &= ~DEV_CONFIG_PENDING;

        if (prism2_init_dev(local)) {
                prism2_release((u_long) link);
                return 1;
        }

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

        local->shutdown = 0;

        ret = prism2_hw_config(dev, 1);
        return ret;

 cs_failed:
        cs_error(link->handle, last_fn, last_ret);
        prism2_release((u_long)link);
        return 1;
}


static void prism2_release(u_long arg)
{
        dev_link_t *link = (dev_link_t *)arg;
        struct net_device *dev = (struct net_device *) link->priv;
        struct hostap_interface *iface = dev->priv;
        local_info_t *local = iface->local;

        PDEBUG(DEBUG_FLOW, "prism2_release\n");

        if (link->open) {
                printk("%s: release postponed, '%s' still open\n",
                      dev_info, link->dev->dev_name);
                link->state |= DEV_STALE_CONFIG;
                return;
        }

        if (dev != NULL)
                prism2_hw_shutdown(dev, 0);

        local->shutdown = 1;

        if (link->win)
                pcmcia_release_window(link->win);
        pcmcia_release_configuration(link->handle);
        if (link->io.NumPorts1)
                pcmcia_release_io(link->handle, &link->io);
        if (link->irq.AssignedIRQ)
                pcmcia_release_irq(link->handle, &link->irq);

        link->state &= ~DEV_CONFIG;

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


static int prism2_event(event_t event, int priority,
                        event_callback_args_t *args)
{
        dev_link_t *link = args->client_data;
        struct net_device *dev = (struct net_device *) link->priv;

        switch (event) {
        case CS_EVENT_CARD_INSERTION:
                PDEBUG(DEBUG_EXTRA, "%s: CS_EVENT_CARD_INSERTION\n", dev_info);
                link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
                if (prism2_config(link))
                        dev->irq = 0;
                break;

        case CS_EVENT_CARD_REMOVAL:
                PDEBUG(DEBUG_EXTRA, "%s: CS_EVENT_CARD_REMOVAL\n", dev_info);
                link->state &= ~DEV_PRESENT;
                if (link->state & DEV_CONFIG) {
                        hostap_netif_stop_queues(dev);
                        netif_device_detach(dev);
#ifdef HOSTAP_USE_RELEASE_TIMER
                        mod_timer(&link->release, jiffies + HZ / 20);
#else /* HOSTAP_USE_RELEASE_TIMER */
                        prism2_release((u_long) link);
#endif /* HOSTAP_USE_RELEASE_TIMER */
                }
                break;

        case CS_EVENT_PM_SUSPEND:
                PDEBUG(DEBUG_EXTRA, "%s: CS_EVENT_PM_SUSPEND\n", dev_info);
                link->state |= DEV_SUSPEND;
                /* fall through */

        case CS_EVENT_RESET_PHYSICAL:
                PDEBUG(DEBUG_EXTRA, "%s: CS_EVENT_RESET_PHYSICAL\n", dev_info);
                if (link->state & DEV_CONFIG) {
                        if (link->open) {
                                hostap_netif_stop_queues(dev);
                                netif_device_detach(dev);
                        }
                        pcmcia_release_configuration(link->handle);
                }
                break;

        case CS_EVENT_PM_RESUME:
                PDEBUG(DEBUG_EXTRA, "%s: CS_EVENT_PM_RESUME\n", dev_info);
                link->state &= ~DEV_SUSPEND;
                /* fall through */

        case CS_EVENT_CARD_RESET:
                PDEBUG(DEBUG_EXTRA, "%s: CS_EVENT_CARD_RESET\n", dev_info);
                if (link->state & DEV_CONFIG) {
                        pcmcia_request_configuration(link->handle,
                                                     &link->conf);
                        prism2_hw_shutdown(dev, 1);
                        prism2_hw_config(dev, link->open ? 0 : 1);
                        if (link->open) {
                                netif_device_attach(dev);
                                netif_start_queue(dev);
                        }
                }
                break;

        default:
                PDEBUG(DEBUG_EXTRA, "%s: prism2_event() - unknown event %d\n",
                       dev_info, event);
                break;
        }
        return 0;
}


#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,67)
static struct pcmcia_driver hostap_driver = {
        .drv            = {
                .name   = "hostap_cs",
        },
        .attach         = prism2_attach,
        .detach         = prism2_detach,
        .owner          = THIS_MODULE,
};

static int __init init_prism2_pccard(void)
{
        printk(KERN_INFO "%s: %s\n", dev_info, version);
        return pcmcia_register_driver(&hostap_driver);
}

static void __exit exit_prism2_pccard(void)
{
        pcmcia_unregister_driver(&hostap_driver);
        printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
}

#else

static int __init init_prism2_pccard(void)
{
        servinfo_t serv;

        printk(KERN_INFO "%s: %s\n", dev_info, version);
        pcmcia_get_card_services_info(&serv);
        if (serv.Revision != CS_RELEASE_CODE) {
                printk(KERN_NOTICE
                       "%s: CardServices release does not match!\n", dev_info);
                return -1;
        }
        register_pccard_driver(&dev_info, &prism2_attach, &prism2_detach);

        return 0;
}


static void __exit exit_prism2_pccard(void)
{
        unregister_pccard_driver(&dev_info);
        while (dev_list) {
                PDEBUG(DEBUG_FLOW, "exit_prism2 - detaching device\n");
#ifdef HOSTAP_USE_RELEASE_TIMER
                del_timer(&dev_list->release);
#endif /* HOSTAP_USE_RELEASE_TIMER */
                if (dev_list->state & DEV_CONFIG)
                        prism2_release((u_long)dev_list);
                prism2_detach(dev_list);
        }

        printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
}
#endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2,5,67) */


module_init(init_prism2_pccard);
module_exit(exit_prism2_pccard);

---