atmel_cs.c

linux-2.6.15.6

	link->state |= DEV_CONFIG;
	
	/*
	  In this loop, we scan the CIS for configuration table entries,
	  each of which describes a valid card configuration, including
	  voltage, IO window, memory window, and interrupt settings.
	  
	  We make no assumptions about the card to be configured: we use
	  just the information available in the CIS.  In an ideal world,
	  this would work for any PCMCIA card, but it requires a complete
	  and accurate CIS.  In practice, a driver usually "knows" most of
	  these things without consulting the CIS, and most client drivers
	  will only use the CIS to fill in implementation-defined details.
	*/
	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
	CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
	while (1) {
		cistpl_cftable_entry_t dflt = { 0 };
		cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
		if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
				pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
			goto next_entry;
		
		if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
		if (cfg->index == 0) goto next_entry;
		link->conf.ConfigIndex = cfg->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))
			link->conf.Vcc = cfg->vcc.param[CISTPL_POWER_VNOM]/10000;
		else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM))
			link->conf.Vcc = dflt.vcc.param[CISTPL_POWER_VNOM]/10000;
		
		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;
		
		/* IO window settings */
		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;
			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.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 */
		if (pcmcia_request_io(link->handle, &link->io) != 0)
			goto next_entry;

		/* If we got this far, we're cool! */
		break;
		
	next_entry:
		CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(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)
		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));
	
	if (link->irq.AssignedIRQ == 0) {
		printk(KERN_ALERT 
		       "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
		goto cs_failed;
	}
       
	((local_info_t*)link->priv)->eth_dev = 
		init_atmel_card(link->irq.AssignedIRQ,
				link->io.BasePort1,
				did ? did->driver_info : ATMEL_FW_TYPE_NONE,
				&handle_to_dev(handle),
				card_present, 
				link);
	if (!((local_info_t*)link->priv)->eth_dev) 
			goto cs_failed;
	
	
	/*
	  At this point, the dev_node_t structure(s) need to be
	  initialized and arranged in a linked list at link->dev.
	*/
	strcpy(dev->node.dev_name, ((local_info_t*)link->priv)->eth_dev->name );
	dev->node.major = dev->node.minor = 0;
	link->dev = &dev->node;
			
	link->state &= ~DEV_CONFIG_PENDING;
	return;
	
 cs_failed:
	cs_error(link->handle, last_fn, last_ret);
	atmel_release(link);
}

/*======================================================================
  
  After a card is removed, atmel_release() will unregister the
  device, and release the PCMCIA configuration.  If the device is
  still open, this will be postponed until it is closed.
  
  ======================================================================*/

static void atmel_release(dev_link_t *link)
{
	struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
		
	DEBUG(0, "atmel_release(0x%p)\n", link);
	
	/* Unlink the device chain */
	link->dev = NULL;
	
	if (dev) 
		stop_atmel_card(dev);
	((local_info_t*)link->priv)->eth_dev = NULL; 
	
	/* Don't bother checking to see if these succeed or not */
	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;
}

/*======================================================================
  
  The card status event handler.  Mostly, this schedules other
  stuff to run after an event is received.

  When a CARD_REMOVAL event is received, we immediately set a
  private flag to block future accesses to this device.  All the
  functions that actually access the device should check this flag
  to make sure the card is still present.
  
  ======================================================================*/

static int atmel_event(event_t event, int priority,
		      event_callback_args_t *args)
{
	dev_link_t *link = args->client_data;
	local_info_t *local = link->priv;
	
	DEBUG(1, "atmel_event(0x%06x)\n", event);
	
	switch (event) {
	case CS_EVENT_CARD_REMOVAL:
		link->state &= ~DEV_PRESENT;
		if (link->state & DEV_CONFIG) {
			netif_device_detach(local->eth_dev);
			atmel_release(link);
		}
		break;
	case CS_EVENT_CARD_INSERTION:
		link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
		atmel_config(link);
		break;
	case CS_EVENT_PM_SUSPEND:
		link->state |= DEV_SUSPEND;
		/* Fall through... */
	case CS_EVENT_RESET_PHYSICAL:
		if (link->state & DEV_CONFIG) {
			netif_device_detach(local->eth_dev);
			pcmcia_release_configuration(link->handle);
		}
		break;
	case CS_EVENT_PM_RESUME:
		link->state &= ~DEV_SUSPEND;
		/* Fall through... */
	case CS_EVENT_CARD_RESET:
		if (link->state & DEV_CONFIG) {
			pcmcia_request_configuration(link->handle, &link->conf);
			atmel_open(local->eth_dev);
			netif_device_attach(local->eth_dev);
		}
		break;
	}
	return 0;
} /* atmel_event */

/*====================================================================*/
/* We use the driver_info field to store the correct firmware type for a card. */

#define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
	.match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
			PCMCIA_DEV_ID_MATCH_CARD_ID, \
	.manf_id = (manf), \
	.card_id = (card), \
        .driver_info = (kernel_ulong_t)(info), }

#define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
	.match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
			PCMCIA_DEV_ID_MATCH_PROD_ID2, \
	.prod_id = { (v1), (v2), NULL, NULL }, \
	.prod_id_hash = { (vh1), (vh2), 0, 0 }, \
        .driver_info = (kernel_ulong_t)(info), }

static struct pcmcia_device_id atmel_ids[] = {
	PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
	PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
	PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
	PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
	PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
	PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
	PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
	PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
	PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
	PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
	PCMCIA_DEVICE_NULL
};

MODULE_DEVICE_TABLE(pcmcia, atmel_ids);

static struct pcmcia_driver atmel_driver = {
	.owner		= THIS_MODULE,
	.drv		= {
		.name	= "atmel_cs",
        },
	.attach         = atmel_attach,
	.event		= atmel_event,
	.detach		= atmel_detach,
	.id_table	= atmel_ids,
};

static int atmel_cs_init(void)
{
        return pcmcia_register_driver(&atmel_driver);
}

static void atmel_cs_cleanup(void)
{
        pcmcia_unregister_driver(&atmel_driver);
	BUG_ON(dev_list != NULL);
}

/*
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    of the License, or (at your option) any later version.

    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.

    In addition:

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:

    1. Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.
    3. The name of the author may not be used to endorse or promote
       products derived from this software without specific prior written
       permission.

    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.    
*/

module_init(atmel_cs_init);
module_exit(atmel_cs_cleanup);