4c89e88bfd
Instead of using own error or success codes, the PCMCIA code should rely on the generic return values. Therefore, replace all occurrences of CS_SUCCESS with 0. CC: netdev@vger.kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
363 lines
11 KiB
C
363 lines
11 KiB
C
/* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */
|
|
/*======================================================================
|
|
|
|
A teles S0 PCMCIA client driver
|
|
|
|
Based on skeleton by David Hinds, dhinds@allegro.stanford.edu
|
|
Written by Christof Petig, christof.petig@wtal.de
|
|
|
|
Also inspired by ELSA PCMCIA driver
|
|
by Klaus Lichtenwalder <Lichtenwalder@ACM.org>
|
|
|
|
Extentions to new hisax_pcmcia by Karsten Keil
|
|
|
|
minor changes to be compatible with kernel 2.4.x
|
|
by Jan.Schubert@GMX.li
|
|
|
|
======================================================================*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/ioport.h>
|
|
#include <asm/io.h>
|
|
#include <asm/system.h>
|
|
|
|
#include <pcmcia/cs_types.h>
|
|
#include <pcmcia/cs.h>
|
|
#include <pcmcia/cistpl.h>
|
|
#include <pcmcia/cisreg.h>
|
|
#include <pcmcia/ds.h>
|
|
#include "hisax_cfg.h"
|
|
|
|
MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
|
|
MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
|
|
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 =
|
|
"teles_cs.c 2.10 2002/07/30 22:23:34 kkeil";
|
|
#else
|
|
#define DEBUG(n, args...)
|
|
#endif
|
|
|
|
/*====================================================================*/
|
|
|
|
/* Parameters that can be set with 'insmod' */
|
|
|
|
static int protocol = 2; /* EURO-ISDN Default */
|
|
module_param(protocol, 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 teles_cs event
|
|
handler.
|
|
*/
|
|
|
|
static int teles_cs_config(struct pcmcia_device *link);
|
|
static void teles_cs_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 teles_detach(struct pcmcia_device *p_dev);
|
|
|
|
/*
|
|
A linked list of "instances" of the teles_cs 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 shouldn't be allocated dynamically.
|
|
In this case, we also provide a flag to indicate if a device is
|
|
"stopped" due to a power management event, or card ejection. The
|
|
device IO routines can use a flag like this to throttle IO to a
|
|
card that is not ready to accept it.
|
|
*/
|
|
|
|
typedef struct local_info_t {
|
|
struct pcmcia_device *p_dev;
|
|
dev_node_t node;
|
|
int busy;
|
|
int cardnr;
|
|
} local_info_t;
|
|
|
|
/*======================================================================
|
|
|
|
teles_attach() creates an "instance" of the driver, allocatingx
|
|
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 teles_probe(struct pcmcia_device *link)
|
|
{
|
|
local_info_t *local;
|
|
|
|
DEBUG(0, "teles_attach()\n");
|
|
|
|
/* Allocate space for private device-specific data */
|
|
local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
|
|
if (!local) return -ENOMEM;
|
|
local->cardnr = -1;
|
|
|
|
local->p_dev = link;
|
|
link->priv = local;
|
|
|
|
/* Interrupt setup */
|
|
link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
|
|
link->irq.IRQInfo1 = IRQ_LEVEL_ID|IRQ_SHARE_ID;
|
|
link->irq.Handler = NULL;
|
|
|
|
/*
|
|
General socket configuration defaults can go here. In this
|
|
client, we assume very little, and rely on the CIS for almost
|
|
everything. In most clients, many details (i.e., number, sizes,
|
|
and attributes of IO windows) are fixed by the nature of the
|
|
device, and can be hard-wired here.
|
|
*/
|
|
link->io.NumPorts1 = 96;
|
|
link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
|
|
link->io.IOAddrLines = 5;
|
|
|
|
link->conf.Attributes = CONF_ENABLE_IRQ;
|
|
link->conf.IntType = INT_MEMORY_AND_IO;
|
|
|
|
return teles_cs_config(link);
|
|
} /* teles_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 teles_detach(struct pcmcia_device *link)
|
|
{
|
|
local_info_t *info = link->priv;
|
|
|
|
DEBUG(0, "teles_detach(0x%p)\n", link);
|
|
|
|
info->busy = 1;
|
|
teles_cs_release(link);
|
|
|
|
kfree(info);
|
|
} /* teles_detach */
|
|
|
|
/*======================================================================
|
|
|
|
teles_cs_config() is scheduled to run after a CARD_INSERTION event
|
|
is received, to configure the PCMCIA socket, and to make the
|
|
device available to the system.
|
|
|
|
======================================================================*/
|
|
|
|
static int teles_cs_configcheck(struct pcmcia_device *p_dev,
|
|
cistpl_cftable_entry_t *cf,
|
|
cistpl_cftable_entry_t *dflt,
|
|
unsigned int vcc,
|
|
void *priv_data)
|
|
{
|
|
int j;
|
|
|
|
if ((cf->io.nwin > 0) && cf->io.win[0].base) {
|
|
printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
|
|
p_dev->io.BasePort1 = cf->io.win[0].base;
|
|
if (!pcmcia_request_io(p_dev, &p_dev->io))
|
|
return 0;
|
|
} else {
|
|
printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
|
|
for (j = 0x2f0; j > 0x100; j -= 0x10) {
|
|
p_dev->io.BasePort1 = j;
|
|
if (!pcmcia_request_io(p_dev, &p_dev->io))
|
|
return 0;
|
|
}
|
|
}
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int teles_cs_config(struct pcmcia_device *link)
|
|
{
|
|
local_info_t *dev;
|
|
int i, last_fn;
|
|
IsdnCard_t icard;
|
|
|
|
DEBUG(0, "teles_config(0x%p)\n", link);
|
|
dev = link->priv;
|
|
|
|
i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
|
|
if (i != 0) {
|
|
last_fn = RequestIO;
|
|
goto cs_failed;
|
|
}
|
|
|
|
i = pcmcia_request_irq(link, &link->irq);
|
|
if (i != 0) {
|
|
link->irq.AssignedIRQ = 0;
|
|
last_fn = RequestIRQ;
|
|
goto cs_failed;
|
|
}
|
|
|
|
i = pcmcia_request_configuration(link, &link->conf);
|
|
if (i != 0) {
|
|
last_fn = RequestConfiguration;
|
|
goto cs_failed;
|
|
}
|
|
|
|
/* At this point, the dev_node_t structure(s) should be
|
|
initialized and arranged in a linked list at link->dev. *//* */
|
|
sprintf(dev->node.dev_name, "teles");
|
|
dev->node.major = dev->node.minor = 0x0;
|
|
|
|
link->dev_node = &dev->node;
|
|
|
|
/* Finally, report what we've done */
|
|
printk(KERN_INFO "%s: index 0x%02x:",
|
|
dev->node.dev_name, link->conf.ConfigIndex);
|
|
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");
|
|
|
|
icard.para[0] = link->irq.AssignedIRQ;
|
|
icard.para[1] = link->io.BasePort1;
|
|
icard.protocol = protocol;
|
|
icard.typ = ISDN_CTYPE_TELESPCMCIA;
|
|
|
|
i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
|
|
if (i < 0) {
|
|
printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
|
|
i, link->io.BasePort1);
|
|
teles_cs_release(link);
|
|
return -ENODEV;
|
|
}
|
|
|
|
((local_info_t*)link->priv)->cardnr = i;
|
|
return 0;
|
|
|
|
cs_failed:
|
|
cs_error(link, last_fn, i);
|
|
teles_cs_release(link);
|
|
return -ENODEV;
|
|
} /* teles_cs_config */
|
|
|
|
/*======================================================================
|
|
|
|
After a card is removed, teles_cs_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 teles_cs_release(struct pcmcia_device *link)
|
|
{
|
|
local_info_t *local = link->priv;
|
|
|
|
DEBUG(0, "teles_cs_release(0x%p)\n", link);
|
|
|
|
if (local) {
|
|
if (local->cardnr >= 0) {
|
|
/* no unregister function with hisax */
|
|
HiSax_closecard(local->cardnr);
|
|
}
|
|
}
|
|
|
|
pcmcia_disable_device(link);
|
|
} /* teles_cs_release */
|
|
|
|
static int teles_suspend(struct pcmcia_device *link)
|
|
{
|
|
local_info_t *dev = link->priv;
|
|
|
|
dev->busy = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int teles_resume(struct pcmcia_device *link)
|
|
{
|
|
local_info_t *dev = link->priv;
|
|
|
|
dev->busy = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct pcmcia_device_id teles_ids[] = {
|
|
PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
|
|
PCMCIA_DEVICE_NULL,
|
|
};
|
|
MODULE_DEVICE_TABLE(pcmcia, teles_ids);
|
|
|
|
static struct pcmcia_driver teles_cs_driver = {
|
|
.owner = THIS_MODULE,
|
|
.drv = {
|
|
.name = "teles_cs",
|
|
},
|
|
.probe = teles_probe,
|
|
.remove = teles_detach,
|
|
.id_table = teles_ids,
|
|
.suspend = teles_suspend,
|
|
.resume = teles_resume,
|
|
};
|
|
|
|
static int __init init_teles_cs(void)
|
|
{
|
|
return pcmcia_register_driver(&teles_cs_driver);
|
|
}
|
|
|
|
static void __exit exit_teles_cs(void)
|
|
{
|
|
pcmcia_unregister_driver(&teles_cs_driver);
|
|
}
|
|
|
|
module_init(init_teles_cs);
|
|
module_exit(exit_teles_cs);
|