324 lines
9.2 KiB
C
324 lines
9.2 KiB
C
/*
|
|
* PCMCIA client driver for AVM A1 / Fritz!PCMCIA
|
|
*
|
|
* Author Carsten Paeth
|
|
* Copyright 1998-2001 by Carsten Paeth <calle@calle.in-berlin.de>
|
|
*
|
|
* This software may be used and distributed according to the terms
|
|
* of the GNU General Public License, incorporated herein by reference.
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
#include <asm/io.h>
|
|
#include <asm/system.h>
|
|
|
|
#include <pcmcia/cs_types.h>
|
|
#include <pcmcia/cs.h>
|
|
#include <pcmcia/cistpl.h>
|
|
#include <pcmcia/ds.h>
|
|
#include "hisax_cfg.h"
|
|
|
|
MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards");
|
|
MODULE_AUTHOR("Carsten Paeth");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
/*
|
|
All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
|
|
you do not define PCMCIA_DEBUG at all, all the debug code will be
|
|
left out. If you compile with PCMCIA_DEBUG=0, the debug code will
|
|
be present but disabled -- but it can then be enabled for specific
|
|
modules at load time with a 'pc_debug=#' option to insmod.
|
|
*/
|
|
#ifdef PCMCIA_DEBUG
|
|
static int pc_debug = PCMCIA_DEBUG;
|
|
module_param(pc_debug, int, 0);
|
|
#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
|
|
static char *version =
|
|
"avma1_cs.c 1.00 1998/01/23 10:00:00 (Carsten Paeth)";
|
|
#else
|
|
#define DEBUG(n, args...)
|
|
#endif
|
|
|
|
/*====================================================================*/
|
|
|
|
/* Parameters that can be set with 'insmod' */
|
|
|
|
static int isdnprot = 2;
|
|
|
|
module_param(isdnprot, int, 0);
|
|
|
|
/*====================================================================*/
|
|
|
|
/*
|
|
The event() function is this driver's Card Services event handler.
|
|
It will be called by Card Services when an appropriate card status
|
|
event is received. The config() and release() entry points are
|
|
used to configure or release a socket, in response to card insertion
|
|
and ejection events. They are invoked from the skeleton event
|
|
handler.
|
|
*/
|
|
|
|
static int avma1cs_config(struct pcmcia_device *link);
|
|
static void avma1cs_release(struct pcmcia_device *link);
|
|
|
|
/*
|
|
The attach() and detach() entry points are used to create and destroy
|
|
"instances" of the driver, where each instance represents everything
|
|
needed to manage one actual PCMCIA card.
|
|
*/
|
|
|
|
static void avma1cs_detach(struct pcmcia_device *p_dev);
|
|
|
|
|
|
/*
|
|
A linked list of "instances" of the skeleton device. Each actual
|
|
PCMCIA card corresponds to one device instance, and is described
|
|
by one struct pcmcia_device structure (defined in ds.h).
|
|
|
|
You may not want to use a linked list for this -- for example, the
|
|
memory card driver uses an array of struct pcmcia_device pointers, where minor
|
|
device numbers are used to derive the corresponding array index.
|
|
*/
|
|
|
|
/*
|
|
A driver needs to provide a dev_node_t structure for each device
|
|
on a card. In some cases, there is only one device per card (for
|
|
example, ethernet cards, modems). In other cases, there may be
|
|
many actual or logical devices (SCSI adapters, memory cards with
|
|
multiple partitions). The dev_node_t structures need to be kept
|
|
in a linked list starting at the 'dev' field of a struct pcmcia_device
|
|
structure. We allocate them in the card's private data structure,
|
|
because they generally can't be allocated dynamically.
|
|
*/
|
|
|
|
typedef struct local_info_t {
|
|
dev_node_t node;
|
|
} local_info_t;
|
|
|
|
/*======================================================================
|
|
|
|
avma1cs_attach() creates an "instance" of the driver, allocating
|
|
local data structures for one device. The device is registered
|
|
with Card Services.
|
|
|
|
The dev_link structure is initialized, but we don't actually
|
|
configure the card at this point -- we wait until we receive a
|
|
card insertion event.
|
|
|
|
======================================================================*/
|
|
|
|
static int avma1cs_probe(struct pcmcia_device *p_dev)
|
|
{
|
|
local_info_t *local;
|
|
|
|
DEBUG(0, "avma1cs_attach()\n");
|
|
|
|
/* Allocate space for private device-specific data */
|
|
local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
|
|
if (!local)
|
|
return -ENOMEM;
|
|
|
|
p_dev->priv = local;
|
|
|
|
/* The io structure describes IO port mapping */
|
|
p_dev->io.NumPorts1 = 16;
|
|
p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
|
|
p_dev->io.NumPorts2 = 16;
|
|
p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
|
|
p_dev->io.IOAddrLines = 5;
|
|
|
|
/* Interrupt setup */
|
|
p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
|
|
p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
|
|
|
|
p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
|
|
|
|
/* General socket configuration */
|
|
p_dev->conf.Attributes = CONF_ENABLE_IRQ;
|
|
p_dev->conf.IntType = INT_MEMORY_AND_IO;
|
|
p_dev->conf.ConfigIndex = 1;
|
|
p_dev->conf.Present = PRESENT_OPTION;
|
|
|
|
return avma1cs_config(p_dev);
|
|
} /* avma1cs_attach */
|
|
|
|
/*======================================================================
|
|
|
|
This deletes a driver "instance". The device is de-registered
|
|
with Card Services. If it has been released, all local data
|
|
structures are freed. Otherwise, the structures will be freed
|
|
when the device is released.
|
|
|
|
======================================================================*/
|
|
|
|
static void avma1cs_detach(struct pcmcia_device *link)
|
|
{
|
|
DEBUG(0, "avma1cs_detach(0x%p)\n", link);
|
|
avma1cs_release(link);
|
|
kfree(link->priv);
|
|
} /* avma1cs_detach */
|
|
|
|
/*======================================================================
|
|
|
|
avma1cs_config() is scheduled to run after a CARD_INSERTION event
|
|
is received, to configure the PCMCIA socket, and to make the
|
|
ethernet device available to the system.
|
|
|
|
======================================================================*/
|
|
|
|
static int avma1cs_configcheck(struct pcmcia_device *p_dev,
|
|
cistpl_cftable_entry_t *cf,
|
|
cistpl_cftable_entry_t *dflt,
|
|
unsigned int vcc,
|
|
void *priv_data)
|
|
{
|
|
if (cf->io.nwin <= 0)
|
|
return -ENODEV;
|
|
|
|
p_dev->io.BasePort1 = cf->io.win[0].base;
|
|
p_dev->io.NumPorts1 = cf->io.win[0].len;
|
|
p_dev->io.NumPorts2 = 0;
|
|
printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
|
|
p_dev->io.BasePort1,
|
|
p_dev->io.BasePort1+p_dev->io.NumPorts1-1);
|
|
return pcmcia_request_io(p_dev, &p_dev->io);
|
|
}
|
|
|
|
|
|
static int avma1cs_config(struct pcmcia_device *link)
|
|
{
|
|
local_info_t *dev;
|
|
int i;
|
|
char devname[128];
|
|
IsdnCard_t icard;
|
|
int busy = 0;
|
|
|
|
dev = link->priv;
|
|
|
|
DEBUG(0, "avma1cs_config(0x%p)\n", link);
|
|
|
|
devname[0] = 0;
|
|
if (link->prod_id[1])
|
|
strlcpy(devname, link->prod_id[1], sizeof(devname));
|
|
|
|
if (pcmcia_loop_config(link, avma1cs_configcheck, NULL))
|
|
return -ENODEV;
|
|
|
|
do {
|
|
/*
|
|
* allocate an interrupt line
|
|
*/
|
|
i = pcmcia_request_irq(link, &link->irq);
|
|
if (i != 0) {
|
|
cs_error(link, RequestIRQ, i);
|
|
/* undo */
|
|
pcmcia_disable_device(link);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* configure the PCMCIA socket
|
|
*/
|
|
i = pcmcia_request_configuration(link, &link->conf);
|
|
if (i != 0) {
|
|
cs_error(link, RequestConfiguration, i);
|
|
pcmcia_disable_device(link);
|
|
break;
|
|
}
|
|
|
|
} while (0);
|
|
|
|
/* At this point, the dev_node_t structure(s) should be
|
|
initialized and arranged in a linked list at link->dev. */
|
|
|
|
strcpy(dev->node.dev_name, "A1");
|
|
dev->node.major = 45;
|
|
dev->node.minor = 0;
|
|
link->dev_node = &dev->node;
|
|
|
|
/* If any step failed, release any partially configured state */
|
|
if (i != 0) {
|
|
avma1cs_release(link);
|
|
return -ENODEV;
|
|
}
|
|
|
|
printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
|
|
link->io.BasePort1, link->irq.AssignedIRQ);
|
|
|
|
icard.para[0] = link->irq.AssignedIRQ;
|
|
icard.para[1] = link->io.BasePort1;
|
|
icard.protocol = isdnprot;
|
|
icard.typ = ISDN_CTYPE_A1_PCMCIA;
|
|
|
|
i = hisax_init_pcmcia(link, &busy, &icard);
|
|
if (i < 0) {
|
|
printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
|
|
avma1cs_release(link);
|
|
return -ENODEV;
|
|
}
|
|
dev->node.minor = i;
|
|
|
|
return 0;
|
|
} /* avma1cs_config */
|
|
|
|
/*======================================================================
|
|
|
|
After a card is removed, avma1cs_release() will unregister the net
|
|
device, and release the PCMCIA configuration. If the device is
|
|
still open, this will be postponed until it is closed.
|
|
|
|
======================================================================*/
|
|
|
|
static void avma1cs_release(struct pcmcia_device *link)
|
|
{
|
|
local_info_t *local = link->priv;
|
|
|
|
DEBUG(0, "avma1cs_release(0x%p)\n", link);
|
|
|
|
/* now unregister function with hisax */
|
|
HiSax_closecard(local->node.minor);
|
|
|
|
pcmcia_disable_device(link);
|
|
} /* avma1cs_release */
|
|
|
|
|
|
static struct pcmcia_device_id avma1cs_ids[] = {
|
|
PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
|
|
PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
|
|
PCMCIA_DEVICE_NULL
|
|
};
|
|
MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
|
|
|
|
static struct pcmcia_driver avma1cs_driver = {
|
|
.owner = THIS_MODULE,
|
|
.drv = {
|
|
.name = "avma1_cs",
|
|
},
|
|
.probe = avma1cs_probe,
|
|
.remove = avma1cs_detach,
|
|
.id_table = avma1cs_ids,
|
|
};
|
|
|
|
/*====================================================================*/
|
|
|
|
static int __init init_avma1_cs(void)
|
|
{
|
|
return(pcmcia_register_driver(&avma1cs_driver));
|
|
}
|
|
|
|
static void __exit exit_avma1_cs(void)
|
|
{
|
|
pcmcia_unregister_driver(&avma1cs_driver);
|
|
}
|
|
|
|
module_init(init_avma1_cs);
|
|
module_exit(exit_avma1_cs);
|