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|
/*
* $Id: t1pci.c,v 1.9 2000/05/19 15:43:22 calle Exp $
*
* Module for AVM T1 PCI-card.
*
* (c) Copyright 1999 by Carsten Paeth (calle@calle.in-berlin.de)
*
* $Log: t1pci.c,v $
* Revision 1.9 2000/05/19 15:43:22 calle
* added calls to pci_device_start().
*
* Revision 1.8 2000/05/06 00:52:36 kai
* merged changes from kernel tree
* fixed timer and net_device->name breakage
*
* Revision 1.7 2000/04/07 15:26:55 calle
* better error message if cabel not connected or T1 has no power.
*
* Revision 1.6 2000/04/03 13:29:25 calle
* make Tim Waugh happy (module unload races in 2.3.99-pre3).
* no real problem there, but now it is much cleaner ...
*
* Revision 1.5 2000/02/02 18:36:04 calle
* - Modules are now locked while init_module is running
* - fixed problem with memory mapping if address is not aligned
*
* Revision 1.4 2000/01/25 14:33:38 calle
* - Added Support AVM B1 PCI V4.0 (tested with prototype)
* - splitted up t1pci.c into b1dma.c for common function with b1pciv4
* - support for revision register
*
* Revision 1.3 1999/11/13 21:27:16 keil
* remove KERNELVERSION
*
* Revision 1.2 1999/11/05 16:38:02 calle
* Cleanups before kernel 2.4:
* - Changed all messages to use card->name or driver->name instead of
* constant string.
* - Moved some data from struct avmcard into new struct avmctrl_info.
* Changed all lowlevel capi driver to match the new structur.
*
* Revision 1.1 1999/10/26 15:31:42 calle
* Added driver for T1-PCI card.
*
*
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/capi.h>
#include <asm/io.h>
#include <linux/isdn.h>
#include "capicmd.h"
#include "capiutil.h"
#include "capilli.h"
#include "avmcard.h"
static char *revision = "$Revision: 1.9 $";
#undef CONFIG_T1PCI_DEBUG
#undef CONFIG_T1PCI_POLLDEBUG
/* ------------------------------------------------------------- */
#ifndef PCI_VENDOR_ID_AVM
#define PCI_VENDOR_ID_AVM 0x1244
#endif
#ifndef PCI_DEVICE_ID_AVM_T1
#define PCI_DEVICE_ID_AVM_T1 0x1200
#endif
/* ------------------------------------------------------------- */
MODULE_AUTHOR("Carsten Paeth <calle@calle.in-berlin.de>");
/* ------------------------------------------------------------- */
static struct capi_driver_interface *di;
/* ------------------------------------------------------------- */
static void t1pci_remove_ctr(struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
b1dma_reset(card);
di->detach_ctr(ctrl);
free_irq(card->irq, card);
iounmap((void *) (((unsigned long) card->mbase) & PAGE_MASK));
release_region(card->port, AVMB1_PORTLEN);
ctrl->driverdata = 0;
kfree(card->ctrlinfo);
kfree(card->dma);
kfree(card);
MOD_DEC_USE_COUNT;
}
/* ------------------------------------------------------------- */
static int t1pci_add_card(struct capi_driver *driver, struct capicardparams *p)
{
unsigned long base, page_offset;
avmcard *card;
avmctrl_info *cinfo;
int retval;
MOD_INC_USE_COUNT;
card = (avmcard *) kmalloc(sizeof(avmcard), GFP_ATOMIC);
if (!card) {
printk(KERN_WARNING "%s: no memory.\n", driver->name);
MOD_DEC_USE_COUNT;
return -ENOMEM;
}
memset(card, 0, sizeof(avmcard));
card->dma = (avmcard_dmainfo *) kmalloc(sizeof(avmcard_dmainfo), GFP_ATOMIC);
if (!card->dma) {
printk(KERN_WARNING "%s: no memory.\n", driver->name);
kfree(card);
MOD_DEC_USE_COUNT;
return -ENOMEM;
}
memset(card->dma, 0, sizeof(avmcard_dmainfo));
cinfo = (avmctrl_info *) kmalloc(sizeof(avmctrl_info), GFP_ATOMIC);
if (!cinfo) {
printk(KERN_WARNING "%s: no memory.\n", driver->name);
kfree(card->dma);
kfree(card);
MOD_DEC_USE_COUNT;
return -ENOMEM;
}
memset(cinfo, 0, sizeof(avmctrl_info));
card->ctrlinfo = cinfo;
cinfo->card = card;
sprintf(card->name, "t1pci-%x", p->port);
card->port = p->port;
card->irq = p->irq;
card->membase = p->membase;
card->cardtype = avm_t1pci;
if (check_region(card->port, AVMB1_PORTLEN)) {
printk(KERN_WARNING
"%s: ports 0x%03x-0x%03x in use.\n",
driver->name, card->port, card->port + AVMB1_PORTLEN);
kfree(card->ctrlinfo);
kfree(card->dma);
kfree(card);
MOD_DEC_USE_COUNT;
return -EBUSY;
}
base = card->membase & PAGE_MASK;
page_offset = card->membase - base;
card->mbase = ioremap_nocache(base, page_offset + 64);
if (card->mbase) {
card->mbase += page_offset;
} else {
printk(KERN_NOTICE "%s: can't remap memory at 0x%lx\n",
driver->name, card->membase);
kfree(card->ctrlinfo);
kfree(card->dma);
kfree(card);
MOD_DEC_USE_COUNT;
return -EIO;
}
b1dma_reset(card);
if ((retval = t1pci_detect(card)) != 0) {
if (retval < 6)
printk(KERN_NOTICE "%s: NO card at 0x%x (%d)\n",
driver->name, card->port, retval);
else
printk(KERN_NOTICE "%s: card at 0x%x, but cabel not connected or T1 has no power (%d)\n",
driver->name, card->port, retval);
iounmap((void *) (((unsigned long) card->mbase) & PAGE_MASK));
kfree(card->ctrlinfo);
kfree(card->dma);
kfree(card);
MOD_DEC_USE_COUNT;
return -EIO;
}
b1dma_reset(card);
request_region(p->port, AVMB1_PORTLEN, card->name);
retval = request_irq(card->irq, b1dma_interrupt, SA_SHIRQ, card->name, card);
if (retval) {
printk(KERN_ERR "%s: unable to get IRQ %d.\n",
driver->name, card->irq);
iounmap((void *) (((unsigned long) card->mbase) & PAGE_MASK));
release_region(card->port, AVMB1_PORTLEN);
kfree(card->ctrlinfo);
kfree(card->dma);
kfree(card);
MOD_DEC_USE_COUNT;
return -EBUSY;
}
cinfo->capi_ctrl = di->attach_ctr(driver, card->name, cinfo);
if (!cinfo->capi_ctrl) {
printk(KERN_ERR "%s: attach controller failed.\n", driver->name);
iounmap((void *) (((unsigned long) card->mbase) & PAGE_MASK));
free_irq(card->irq, card);
release_region(card->port, AVMB1_PORTLEN);
kfree(card->ctrlinfo);
kfree(card->dma);
kfree(card);
MOD_DEC_USE_COUNT;
return -EBUSY;
}
card->cardnr = cinfo->capi_ctrl->cnr;
skb_queue_head_init(&card->dma->send_queue);
printk(KERN_INFO
"%s: AVM T1 PCI at i/o %#x, irq %d, mem %#lx\n",
driver->name, card->port, card->irq, card->membase);
return 0;
}
/* ------------------------------------------------------------- */
static char *t1pci_procinfo(struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
if (!cinfo)
return "";
sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx",
cinfo->cardname[0] ? cinfo->cardname : "-",
cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
cinfo->card ? cinfo->card->port : 0x0,
cinfo->card ? cinfo->card->irq : 0,
cinfo->card ? cinfo->card->membase : 0
);
return cinfo->infobuf;
}
/* ------------------------------------------------------------- */
static struct capi_driver t1pci_driver = {
"t1pci",
"0.0",
b1dma_load_firmware,
b1dma_reset_ctr,
t1pci_remove_ctr,
b1dma_register_appl,
b1dma_release_appl,
b1dma_send_message,
t1pci_procinfo,
b1dmactl_read_proc,
0, /* use standard driver_read_proc */
0, /* no add_card function */
};
#ifdef MODULE
#define t1pci_init init_module
void cleanup_module(void);
#endif
static int ncards = 0;
int t1pci_init(void)
{
struct capi_driver *driver = &t1pci_driver;
struct pci_dev *dev = NULL;
char *p;
int retval;
MOD_INC_USE_COUNT;
if ((p = strchr(revision, ':'))) {
strncpy(driver->revision, p + 1, sizeof(driver->revision));
p = strchr(driver->revision, '$');
*p = 0;
}
printk(KERN_INFO "%s: revision %s\n", driver->name, driver->revision);
di = attach_capi_driver(driver);
if (!di) {
printk(KERN_ERR "%s: failed to attach capi_driver\n",
driver->name);
MOD_DEC_USE_COUNT;
return -EIO;
}
#ifdef CONFIG_PCI
if (!pci_present()) {
printk(KERN_ERR "%s: no PCI bus present\n", driver->name);
detach_capi_driver(driver);
MOD_DEC_USE_COUNT;
return -EIO;
}
while ((dev = pci_find_device(PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_T1, dev))) {
struct capicardparams param;
param.port = pci_resource_start(dev, 1);
param.irq = dev->irq;
param.membase = pci_resource_start(dev, 0);
retval = pci_enable_device (dev);
if (retval != 0) {
printk(KERN_ERR
"%s: failed to enable AVM-T1-PCI at i/o %#x, irq %d, mem %#x err=%d\n",
driver->name, param.port, param.irq, param.membase, retval);
#ifdef MODULE
cleanup_module();
#endif
MOD_DEC_USE_COUNT;
return -EIO;
}
printk(KERN_INFO
"%s: PCI BIOS reports AVM-T1-PCI at i/o %#x, irq %d, mem %#x\n",
driver->name, param.port, param.irq, param.membase);
retval = t1pci_add_card(driver, ¶m);
if (retval != 0) {
printk(KERN_ERR
"%s: no AVM-T1-PCI at i/o %#x, irq %d detected, mem %#x\n",
driver->name, param.port, param.irq, param.membase);
#ifdef MODULE
cleanup_module();
#endif
MOD_DEC_USE_COUNT;
return retval;
}
ncards++;
}
if (ncards) {
printk(KERN_INFO "%s: %d T1-PCI card(s) detected\n",
driver->name, ncards);
MOD_DEC_USE_COUNT;
return 0;
}
printk(KERN_ERR "%s: NO T1-PCI card detected\n", driver->name);
MOD_DEC_USE_COUNT;
return -ESRCH;
#else
printk(KERN_ERR "%s: kernel not compiled with PCI.\n", driver->name);
MOD_DEC_USE_COUNT;
return -EIO;
#endif
}
#ifdef MODULE
void cleanup_module(void)
{
detach_capi_driver(&t1pci_driver);
}
#endif
|
