70294b4683
As we do not allow setting Vcc in the pcmcia core, and Vpp1 and Vpp2 can only be set to the same value, a lot of code can be streamlined. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
404 lines
11 KiB
C
404 lines
11 KiB
C
/* $Id: avm_cs.c,v 1.4.6.3 2001/09/23 22:24:33 kai Exp $
|
|
*
|
|
* A PCMCIA client driver for AVM B1/M1/M2
|
|
*
|
|
* Copyright 1999 by Carsten Paeth <calle@calle.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/sched.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/major.h>
|
|
#include <asm/io.h>
|
|
#include <asm/system.h>
|
|
|
|
#include <pcmcia/cs_types.h>
|
|
#include <pcmcia/cs.h>
|
|
#include <pcmcia/cistpl.h>
|
|
#include <pcmcia/ciscode.h>
|
|
#include <pcmcia/ds.h>
|
|
#include <pcmcia/cisreg.h>
|
|
|
|
#include <linux/skbuff.h>
|
|
#include <linux/capi.h>
|
|
#include <linux/b1lli.h>
|
|
#include <linux/b1pcmcia.h>
|
|
|
|
/*====================================================================*/
|
|
|
|
MODULE_DESCRIPTION("CAPI4Linux: PCMCIA client driver for AVM B1/M1/M2");
|
|
MODULE_AUTHOR("Carsten Paeth");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
/*====================================================================*/
|
|
|
|
/*
|
|
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 void avmcs_config(dev_link_t *link);
|
|
static void avmcs_release(dev_link_t *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 avmcs_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 dev_link_t 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 dev_link_t 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 dev_link_t
|
|
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;
|
|
|
|
/*======================================================================
|
|
|
|
avmcs_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 avmcs_attach(struct pcmcia_device *p_dev)
|
|
{
|
|
dev_link_t *link;
|
|
local_info_t *local;
|
|
|
|
/* Initialize the dev_link_t structure */
|
|
link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
|
|
if (!link)
|
|
goto err;
|
|
memset(link, 0, sizeof(struct dev_link_t));
|
|
|
|
/* The io structure describes IO port mapping */
|
|
link->io.NumPorts1 = 16;
|
|
link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
|
|
link->io.NumPorts2 = 0;
|
|
|
|
/* Interrupt setup */
|
|
link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
|
|
link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
|
|
|
|
link->irq.IRQInfo1 = IRQ_LEVEL_ID;
|
|
|
|
/* General socket configuration */
|
|
link->conf.Attributes = CONF_ENABLE_IRQ;
|
|
link->conf.IntType = INT_MEMORY_AND_IO;
|
|
link->conf.ConfigIndex = 1;
|
|
link->conf.Present = PRESENT_OPTION;
|
|
|
|
/* Allocate space for private device-specific data */
|
|
local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
|
|
if (!local)
|
|
goto err_kfree;
|
|
memset(local, 0, sizeof(local_info_t));
|
|
link->priv = local;
|
|
|
|
link->handle = p_dev;
|
|
p_dev->instance = link;
|
|
|
|
link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
|
|
avmcs_config(link);
|
|
|
|
return 0;
|
|
|
|
err_kfree:
|
|
kfree(link);
|
|
err:
|
|
return -EINVAL;
|
|
} /* avmcs_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 avmcs_detach(struct pcmcia_device *p_dev)
|
|
{
|
|
dev_link_t *link = dev_to_instance(p_dev);
|
|
|
|
if (link->state & DEV_CONFIG)
|
|
avmcs_release(link);
|
|
|
|
kfree(link->priv);
|
|
kfree(link);
|
|
} /* avmcs_detach */
|
|
|
|
/*======================================================================
|
|
|
|
avmcs_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 get_tuple(client_handle_t handle, tuple_t *tuple,
|
|
cisparse_t *parse)
|
|
{
|
|
int i = pcmcia_get_tuple_data(handle, tuple);
|
|
if (i != CS_SUCCESS) return i;
|
|
return pcmcia_parse_tuple(handle, tuple, parse);
|
|
}
|
|
|
|
static int first_tuple(client_handle_t handle, tuple_t *tuple,
|
|
cisparse_t *parse)
|
|
{
|
|
int i = pcmcia_get_first_tuple(handle, tuple);
|
|
if (i != CS_SUCCESS) return i;
|
|
return get_tuple(handle, tuple, parse);
|
|
}
|
|
|
|
static int next_tuple(client_handle_t handle, tuple_t *tuple,
|
|
cisparse_t *parse)
|
|
{
|
|
int i = pcmcia_get_next_tuple(handle, tuple);
|
|
if (i != CS_SUCCESS) return i;
|
|
return get_tuple(handle, tuple, parse);
|
|
}
|
|
|
|
static void avmcs_config(dev_link_t *link)
|
|
{
|
|
client_handle_t handle;
|
|
tuple_t tuple;
|
|
cisparse_t parse;
|
|
cistpl_cftable_entry_t *cf = &parse.cftable_entry;
|
|
local_info_t *dev;
|
|
int i;
|
|
u_char buf[64];
|
|
char devname[128];
|
|
int cardtype;
|
|
int (*addcard)(unsigned int port, unsigned irq);
|
|
|
|
handle = link->handle;
|
|
dev = link->priv;
|
|
|
|
/*
|
|
This reads the card's CONFIG tuple to find its configuration
|
|
registers.
|
|
*/
|
|
do {
|
|
tuple.DesiredTuple = CISTPL_CONFIG;
|
|
i = pcmcia_get_first_tuple(handle, &tuple);
|
|
if (i != CS_SUCCESS) break;
|
|
tuple.TupleData = buf;
|
|
tuple.TupleDataMax = 64;
|
|
tuple.TupleOffset = 0;
|
|
i = pcmcia_get_tuple_data(handle, &tuple);
|
|
if (i != CS_SUCCESS) break;
|
|
i = pcmcia_parse_tuple(handle, &tuple, &parse);
|
|
if (i != CS_SUCCESS) break;
|
|
link->conf.ConfigBase = parse.config.base;
|
|
} while (0);
|
|
if (i != CS_SUCCESS) {
|
|
cs_error(link->handle, ParseTuple, i);
|
|
link->state &= ~DEV_CONFIG_PENDING;
|
|
return;
|
|
}
|
|
|
|
/* Configure card */
|
|
link->state |= DEV_CONFIG;
|
|
|
|
do {
|
|
|
|
tuple.Attributes = 0;
|
|
tuple.TupleData = buf;
|
|
tuple.TupleDataMax = 254;
|
|
tuple.TupleOffset = 0;
|
|
tuple.DesiredTuple = CISTPL_VERS_1;
|
|
|
|
devname[0] = 0;
|
|
if( !first_tuple(handle, &tuple, &parse) && parse.version_1.ns > 1 ) {
|
|
strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1],
|
|
sizeof(devname));
|
|
}
|
|
/*
|
|
* find IO port
|
|
*/
|
|
tuple.TupleData = (cisdata_t *)buf;
|
|
tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
|
|
tuple.Attributes = 0;
|
|
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
|
|
i = first_tuple(handle, &tuple, &parse);
|
|
while (i == CS_SUCCESS) {
|
|
if (cf->io.nwin > 0) {
|
|
link->conf.ConfigIndex = cf->index;
|
|
link->io.BasePort1 = cf->io.win[0].base;
|
|
link->io.NumPorts1 = cf->io.win[0].len;
|
|
link->io.NumPorts2 = 0;
|
|
printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
|
|
link->io.BasePort1,
|
|
link->io.BasePort1+link->io.NumPorts1-1);
|
|
i = pcmcia_request_io(link->handle, &link->io);
|
|
if (i == CS_SUCCESS) goto found_port;
|
|
}
|
|
i = next_tuple(handle, &tuple, &parse);
|
|
}
|
|
|
|
found_port:
|
|
if (i != CS_SUCCESS) {
|
|
cs_error(link->handle, RequestIO, i);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* allocate an interrupt line
|
|
*/
|
|
i = pcmcia_request_irq(link->handle, &link->irq);
|
|
if (i != CS_SUCCESS) {
|
|
cs_error(link->handle, RequestIRQ, i);
|
|
/* undo */
|
|
pcmcia_disable_device(link->handle);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* configure the PCMCIA socket
|
|
*/
|
|
i = pcmcia_request_configuration(link->handle, &link->conf);
|
|
if (i != CS_SUCCESS) {
|
|
cs_error(link->handle, RequestConfiguration, i);
|
|
pcmcia_disable_device(link->handle);
|
|
break;
|
|
}
|
|
|
|
} while (0);
|
|
|
|
/* At this point, the dev_node_t structure(s) should be
|
|
initialized and arranged in a linked list at link->dev. */
|
|
|
|
if (devname[0]) {
|
|
char *s = strrchr(devname, ' ');
|
|
if (!s)
|
|
s = devname;
|
|
else s++;
|
|
strcpy(dev->node.dev_name, s);
|
|
if (strcmp("M1", s) == 0) {
|
|
cardtype = AVM_CARDTYPE_M1;
|
|
} else if (strcmp("M2", s) == 0) {
|
|
cardtype = AVM_CARDTYPE_M2;
|
|
} else {
|
|
cardtype = AVM_CARDTYPE_B1;
|
|
}
|
|
} else {
|
|
strcpy(dev->node.dev_name, "b1");
|
|
cardtype = AVM_CARDTYPE_B1;
|
|
}
|
|
|
|
dev->node.major = 64;
|
|
dev->node.minor = 0;
|
|
link->dev = &dev->node;
|
|
|
|
link->state &= ~DEV_CONFIG_PENDING;
|
|
/* If any step failed, release any partially configured state */
|
|
if (i != 0) {
|
|
avmcs_release(link);
|
|
return;
|
|
}
|
|
|
|
|
|
switch (cardtype) {
|
|
case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
|
|
case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
|
|
default:
|
|
case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
|
|
}
|
|
if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
|
|
printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
|
|
dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
|
|
avmcs_release(link);
|
|
return;
|
|
}
|
|
dev->node.minor = i;
|
|
|
|
} /* avmcs_config */
|
|
|
|
/*======================================================================
|
|
|
|
After a card is removed, avmcs_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 avmcs_release(dev_link_t *link)
|
|
{
|
|
b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
|
|
pcmcia_disable_device(link->handle);
|
|
} /* avmcs_release */
|
|
|
|
|
|
static struct pcmcia_device_id avmcs_ids[] = {
|
|
PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
|
|
PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
|
|
PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
|
|
PCMCIA_DEVICE_NULL
|
|
};
|
|
MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
|
|
|
|
static struct pcmcia_driver avmcs_driver = {
|
|
.owner = THIS_MODULE,
|
|
.drv = {
|
|
.name = "avm_cs",
|
|
},
|
|
.probe = avmcs_attach,
|
|
.remove = avmcs_detach,
|
|
.id_table = avmcs_ids,
|
|
};
|
|
|
|
static int __init avmcs_init(void)
|
|
{
|
|
return pcmcia_register_driver(&avmcs_driver);
|
|
}
|
|
|
|
static void __exit avmcs_exit(void)
|
|
{
|
|
pcmcia_unregister_driver(&avmcs_driver);
|
|
}
|
|
|
|
module_init(avmcs_init);
|
|
module_exit(avmcs_exit);
|