Viewing file:  b1pci.c (13.7 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* $Id: b1pci.c,v 1.1.4.1 2001/11/20 14:19:34 kai Exp $
*
* Module for AVM B1 PCI-card.
*
* 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/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/init.h>
#include "capicmd.h"
#include "capiutil.h"
#include "capilli.h"
#include "avmcard.h"
static char *revision = "$Revision: 1.1.4.1 $";
/* ------------------------------------------------------------- */
static struct pci_device_id b1pci_pci_tbl[] __initdata = {
{ PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_B1, PCI_ANY_ID, PCI_ANY_ID },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, b1pci_pci_tbl);
MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM B1 PCI card");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");
/* ------------------------------------------------------------- */
static struct capi_driver_interface *di;
/* ------------------------------------------------------------- */
static void b1pci_interrupt(int interrupt, void *devptr, struct pt_regs *regs)
{
avmcard *card;
card = (avmcard *) devptr;
if (!card) {
printk(KERN_WARNING "b1pci: interrupt: wrong device\n");
return;
}
if (card->interrupt) {
printk(KERN_ERR "%s: reentering interrupt hander.\n", card->name);
return;
}
card->interrupt = 1;
b1_handle_interrupt(card);
card->interrupt = 0;
}
/* ------------------------------------------------------------- */
static void b1pci_remove_ctr(struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
unsigned int port = card->port;
b1_reset(port);
b1_reset(port);
di->detach_ctr(ctrl);
free_irq(card->irq, card);
release_region(card->port, AVMB1_PORTLEN);
ctrl->driverdata = 0;
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
}
/* ------------------------------------------------------------- */
static char *b1pci_procinfo(struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
if (!cinfo)
return "";
sprintf(cinfo->infobuf, "%s %s 0x%x %d r%d",
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->revision : 0
);
return cinfo->infobuf;
}
/* ------------------------------------------------------------- */
static int b1pci_add_card(struct capi_driver *driver, struct capicardparams *p)
{
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));
cinfo = (avmctrl_info *) kmalloc(sizeof(avmctrl_info), GFP_ATOMIC);
if (!cinfo) {
printk(KERN_WARNING "%s: no memory.\n", driver->name);
kfree(card);
MOD_DEC_USE_COUNT;
return -ENOMEM;
}
memset(cinfo, 0, sizeof(avmctrl_info));
card->ctrlinfo = cinfo;
cinfo->card = card;
sprintf(card->name, "b1pci-%x", p->port);
card->port = p->port;
card->irq = p->irq;
card->cardtype = avm_b1pci;
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);
MOD_DEC_USE_COUNT;
return -EBUSY;
}
b1_reset(card->port);
if ((retval = b1_detect(card->port, card->cardtype)) != 0) {
printk(KERN_NOTICE "%s: NO card at 0x%x (%d)\n",
driver->name, card->port, retval);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EIO;
}
b1_reset(card->port);
b1_getrevision(card);
request_region(p->port, AVMB1_PORTLEN, card->name);
retval = request_irq(card->irq, b1pci_interrupt, SA_SHIRQ, card->name, card);
if (retval) {
printk(KERN_ERR "%s: unable to get IRQ %d.\n",
driver->name, card->irq);
release_region(card->port, AVMB1_PORTLEN);
kfree(card->ctrlinfo);
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);
free_irq(card->irq, card);
release_region(card->port, AVMB1_PORTLEN);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EBUSY;
}
if (card->revision >= 4) {
printk(KERN_INFO
"%s: AVM B1 PCI V4 at i/o %#x, irq %d, revision %d (no dma)\n",
driver->name, card->port, card->irq, card->revision);
} else {
printk(KERN_INFO
"%s: AVM B1 PCI at i/o %#x, irq %d, revision %d\n",
driver->name, card->port, card->irq, card->revision);
}
return 0;
}
/* ------------------------------------------------------------- */
static struct capi_driver b1pci_driver = {
name: "b1pci",
revision: "0.0",
load_firmware: b1_load_firmware,
reset_ctr: b1_reset_ctr,
remove_ctr: b1pci_remove_ctr,
register_appl: b1_register_appl,
release_appl: b1_release_appl,
send_message: b1_send_message,
procinfo: b1pci_procinfo,
ctr_read_proc: b1ctl_read_proc,
driver_read_proc: 0, /* use standard driver_read_proc */
add_card: 0, /* no add_card function */
};
#ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
/* ------------------------------------------------------------- */
static struct capi_driver_interface *div4;
/* ------------------------------------------------------------- */
static void b1pciv4_remove_ctr(struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
b1dma_reset(card);
div4->detach_ctr(ctrl);
free_irq(card->irq, card);
iounmap(card->mbase);
release_region(card->port, AVMB1_PORTLEN);
ctrl->driverdata = 0;
kfree(card->ctrlinfo);
kfree(card->dma);
kfree(card);
MOD_DEC_USE_COUNT;
}
static char *b1pciv4_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 r%d",
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,
cinfo->card ? cinfo->card->revision : 0
);
return cinfo->infobuf;
}
/* ------------------------------------------------------------- */
static int b1pciv4_add_card(struct capi_driver *driver, struct capicardparams *p)
{
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, "b1pciv4-%x", p->port);
card->port = p->port;
card->irq = p->irq;
card->membase = p->membase;
card->cardtype = avm_b1pci;
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;
}
card->mbase = ioremap_nocache(card->membase, 64);
if (!card->mbase) {
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 = b1pciv4_detect(card)) != 0) {
printk(KERN_NOTICE "%s: NO card at 0x%x (%d)\n",
driver->name, card->port, retval);
iounmap(card->mbase);
kfree(card->ctrlinfo);
kfree(card->dma);
kfree(card);
MOD_DEC_USE_COUNT;
return -EIO;
}
b1dma_reset(card);
b1_getrevision(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(card->mbase);
release_region(card->port, AVMB1_PORTLEN);
kfree(card->ctrlinfo);
kfree(card->dma);
kfree(card);
MOD_DEC_USE_COUNT;
return -EBUSY;
}
cinfo->capi_ctrl = div4->attach_ctr(driver, card->name, cinfo);
if (!cinfo->capi_ctrl) {
printk(KERN_ERR "%s: attach controller failed.\n", driver->name);
iounmap(card->mbase);
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 B1 PCI V4 at i/o %#x, irq %d, mem %#lx, revision %d (dma)\n",
driver->name, card->port, card->irq,
card->membase, card->revision);
return 0;
}
/* ------------------------------------------------------------- */
static struct capi_driver b1pciv4_driver = {
name: "b1pciv4",
revision: "0.0",
load_firmware: b1dma_load_firmware,
reset_ctr: b1dma_reset_ctr,
remove_ctr: b1pciv4_remove_ctr,
register_appl: b1dma_register_appl,
release_appl: b1dma_release_appl,
send_message: b1dma_send_message,
procinfo: b1pciv4_procinfo,
ctr_read_proc: b1dmactl_read_proc,
driver_read_proc: 0, /* use standard driver_read_proc */
add_card: 0, /* no add_card function */
};
#endif /* CONFIG_ISDN_DRV_AVMB1_B1PCIV4 */
static int ncards = 0;
static int add_card(struct pci_dev *dev)
{
struct capi_driver *driver = &b1pci_driver;
struct capicardparams param;
int retval;
if (pci_enable_device(dev) < 0) {
printk(KERN_ERR "%s: failed to enable AVM-B1\n",
driver->name);
return -ENODEV;
}
param.irq = dev->irq;
if (pci_resource_start(dev, 2)) { /* B1 PCI V4 */
#ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
driver = &b1pciv4_driver;
pci_set_master(dev);
#endif
param.membase = pci_resource_start(dev, 0);
param.port = pci_resource_start(dev, 2);
printk(KERN_INFO
"%s: PCI BIOS reports AVM-B1 V4 at i/o %#x, irq %d, mem %#x\n",
driver->name, param.port, param.irq, param.membase);
#ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
retval = b1pciv4_add_card(driver, ¶m);
#else
retval = b1pci_add_card(driver, ¶m);
#endif
if (retval != 0) {
printk(KERN_ERR
"%s: no AVM-B1 V4 at i/o %#x, irq %d, mem %#x detected\n",
driver->name, param.port, param.irq, param.membase);
}
} else {
param.membase = 0;
param.port = pci_resource_start(dev, 1);
printk(KERN_INFO
"%s: PCI BIOS reports AVM-B1 at i/o %#x, irq %d\n",
driver->name, param.port, param.irq);
retval = b1pci_add_card(driver, ¶m);
if (retval != 0) {
printk(KERN_ERR
"%s: no AVM-B1 at i/o %#x, irq %d detected\n",
driver->name, param.port, param.irq);
}
}
return retval;
}
static int __init b1pci_init(void)
{
struct capi_driver *driver = &b1pci_driver;
#ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
struct capi_driver *driverv4 = &b1pciv4_driver;
#endif
struct pci_dev *dev = NULL;
char *p;
MOD_INC_USE_COUNT;
if ((p = strchr(revision, ':')) != 0 && p[1]) {
strncpy(driver->revision, p + 2, sizeof(driver->revision));
driver->revision[sizeof(driver->revision)-1] = 0;
if ((p = strchr(driver->revision, '$')) != 0 && p > driver->revision)
*(p-1) = 0;
}
#ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
if ((p = strchr(revision, ':')) != 0 && p[1]) {
strncpy(driverv4->revision, p + 2, sizeof(driverv4->revision));
driverv4->revision[sizeof(driverv4->revision)-1] = 0;
if ((p = strchr(driverv4->revision, '$')) != 0 && p > driverv4->revision)
*(p-1) = 0;
}
#endif
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 -ENODEV;
}
#ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
printk(KERN_INFO "%s: revision %s\n", driverv4->name, driverv4->revision);
div4 = attach_capi_driver(driverv4);
if (!div4) {
detach_capi_driver(driver);
printk(KERN_ERR "%s: failed to attach capi_driver\n",
driverv4->name);
MOD_DEC_USE_COUNT;
return -ENODEV;
}
#endif
while ((dev = pci_find_device(PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_B1, dev))) {
if (add_card(dev) == 0)
ncards++;
}
if (ncards) {
printk(KERN_INFO "%s: %d B1-PCI card(s) detected\n",
driver->name, ncards);
MOD_DEC_USE_COUNT;
return 0;
}
printk(KERN_ERR "%s: NO B1-PCI card detected\n", driver->name);
detach_capi_driver(driver);
#ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
detach_capi_driver(driverv4);
#endif
MOD_DEC_USE_COUNT;
return -ENODEV;
}
static void __exit b1pci_exit(void)
{
detach_capi_driver(&b1pci_driver);
#ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
detach_capi_driver(&b1pciv4_driver);
#endif
}
module_init(b1pci_init);
module_exit(b1pci_exit);
|