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/* $Id: t1isa.c,v 1.1.4.1 2001/11/20 14:19:34 kai Exp $
*
* Module for AVM T1 HEMA-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/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/capi.h>
#include <linux/kernelcapi.h>
#include <linux/init.h>
#include <asm/io.h>
#include "capicmd.h"
#include "capiutil.h"
#include "capilli.h"
#include "avmcard.h"
static char *revision = "$Revision: 1.1.4.1 $";
/* ------------------------------------------------------------- */
MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM T1 HEMA ISA card");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");
/* ------------------------------------------------------------- */
static struct capi_driver_interface *di;
/* ------------------------------------------------------------- */
static int hema_irq_table[16] =
{0,
0,
0,
0x80, /* irq 3 */
0,
0x90, /* irq 5 */
0,
0xA0, /* irq 7 */
0,
0xB0, /* irq 9 */
0xC0, /* irq 10 */
0xD0, /* irq 11 */
0xE0, /* irq 12 */
0,
0,
0xF0, /* irq 15 */
};
static int t1_detectandinit(unsigned int base, unsigned irq, int cardnr)
{
unsigned char cregs[8];
unsigned char reverse_cardnr;
unsigned long flags;
unsigned char dummy;
int i;
reverse_cardnr = ((cardnr & 0x01) << 3) | ((cardnr & 0x02) << 1)
| ((cardnr & 0x04) >> 1) | ((cardnr & 0x08) >> 3);
cregs[0] = (HEMA_VERSION_ID << 4) | (reverse_cardnr & 0xf);
cregs[1] = 0x00; /* fast & slow link connected to CON1 */
cregs[2] = 0x05; /* fast link 20MBit, slow link 20 MBit */
cregs[3] = 0;
cregs[4] = 0x11; /* zero wait state */
cregs[5] = hema_irq_table[irq & 0xf];
cregs[6] = 0;
cregs[7] = 0;
save_flags(flags);
cli();
/* board reset */
t1outp(base, T1_RESETBOARD, 0xf);
mdelay(100);
dummy = t1inp(base, T1_FASTLINK+T1_OUTSTAT); /* first read */
/* write config */
dummy = (base >> 4) & 0xff;
for (i=1;i<=0xf;i++) t1outp(base, i, dummy);
t1outp(base, HEMA_PAL_ID & 0xf, dummy);
t1outp(base, HEMA_PAL_ID >> 4, cregs[0]);
for(i=1;i<7;i++) t1outp(base, 0, cregs[i]);
t1outp(base, ((base >> 4)) & 0x3, cregs[7]);
restore_flags(flags);
mdelay(100);
t1outp(base, T1_FASTLINK+T1_RESETLINK, 0);
t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0);
mdelay(10);
t1outp(base, T1_FASTLINK+T1_RESETLINK, 1);
t1outp(base, T1_SLOWLINK+T1_RESETLINK, 1);
mdelay(100);
t1outp(base, T1_FASTLINK+T1_RESETLINK, 0);
t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0);
mdelay(10);
t1outp(base, T1_FASTLINK+T1_ANALYSE, 0);
mdelay(5);
t1outp(base, T1_SLOWLINK+T1_ANALYSE, 0);
if (t1inp(base, T1_FASTLINK+T1_OUTSTAT) != 0x1) /* tx empty */
return 1;
if (t1inp(base, T1_FASTLINK+T1_INSTAT) != 0x0) /* rx empty */
return 2;
if (t1inp(base, T1_FASTLINK+T1_IRQENABLE) != 0x0)
return 3;
if ((t1inp(base, T1_FASTLINK+T1_FIFOSTAT) & 0xf0) != 0x70)
return 4;
if ((t1inp(base, T1_FASTLINK+T1_IRQMASTER) & 0x0e) != 0)
return 5;
if ((t1inp(base, T1_FASTLINK+T1_IDENT) & 0x7d) != 1)
return 6;
if (t1inp(base, T1_SLOWLINK+T1_OUTSTAT) != 0x1) /* tx empty */
return 7;
if ((t1inp(base, T1_SLOWLINK+T1_IRQMASTER) & 0x0e) != 0)
return 8;
if ((t1inp(base, T1_SLOWLINK+T1_IDENT) & 0x7d) != 0)
return 9;
return 0;
}
static void t1_handle_interrupt(avmcard * card)
{
avmctrl_info *cinfo = &card->ctrlinfo[0];
struct capi_ctr *ctrl = cinfo->capi_ctrl;
unsigned char b1cmd;
struct sk_buff *skb;
unsigned ApplId;
unsigned MsgLen;
unsigned DataB3Len;
unsigned NCCI;
unsigned WindowSize;
while (b1_rx_full(card->port)) {
b1cmd = b1_get_byte(card->port);
switch (b1cmd) {
case RECEIVE_DATA_B3_IND:
ApplId = (unsigned) b1_get_word(card->port);
MsgLen = t1_get_slice(card->port, card->msgbuf);
DataB3Len = t1_get_slice(card->port, card->databuf);
if (MsgLen < 30) { /* not CAPI 64Bit */
memset(card->msgbuf+MsgLen, 0, 30-MsgLen);
MsgLen = 30;
CAPIMSG_SETLEN(card->msgbuf, 30);
}
if (!(skb = alloc_skb(DataB3Len+MsgLen, GFP_ATOMIC))) {
printk(KERN_ERR "%s: incoming packet dropped\n",
card->name);
} else {
memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len);
ctrl->handle_capimsg(ctrl, ApplId, skb);
}
break;
case RECEIVE_MESSAGE:
ApplId = (unsigned) b1_get_word(card->port);
MsgLen = t1_get_slice(card->port, card->msgbuf);
if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
printk(KERN_ERR "%s: incoming packet dropped\n",
card->name);
} else {
memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
ctrl->handle_capimsg(ctrl, ApplId, skb);
}
break;
case RECEIVE_NEW_NCCI:
ApplId = b1_get_word(card->port);
NCCI = b1_get_word(card->port);
WindowSize = b1_get_word(card->port);
ctrl->new_ncci(ctrl, ApplId, NCCI, WindowSize);
break;
case RECEIVE_FREE_NCCI:
ApplId = b1_get_word(card->port);
NCCI = b1_get_word(card->port);
if (NCCI != 0xffffffff)
ctrl->free_ncci(ctrl, ApplId, NCCI);
else ctrl->appl_released(ctrl, ApplId);
break;
case RECEIVE_START:
b1_put_byte(card->port, SEND_POLLACK);
ctrl->resume_output(ctrl);
break;
case RECEIVE_STOP:
ctrl->suspend_output(ctrl);
break;
case RECEIVE_INIT:
cinfo->versionlen = t1_get_slice(card->port, cinfo->versionbuf);
b1_parse_version(cinfo);
printk(KERN_INFO "%s: %s-card (%s) now active\n",
card->name,
cinfo->version[VER_CARDTYPE],
cinfo->version[VER_DRIVER]);
ctrl->ready(ctrl);
break;
case RECEIVE_TASK_READY:
ApplId = (unsigned) b1_get_word(card->port);
MsgLen = t1_get_slice(card->port, card->msgbuf);
card->msgbuf[MsgLen] = 0;
while ( MsgLen > 0
&& ( card->msgbuf[MsgLen-1] == '\n'
|| card->msgbuf[MsgLen-1] == '\r')) {
card->msgbuf[MsgLen-1] = 0;
MsgLen--;
}
printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
card->name, ApplId, card->msgbuf);
break;
case RECEIVE_DEBUGMSG:
MsgLen = t1_get_slice(card->port, card->msgbuf);
card->msgbuf[MsgLen] = 0;
while ( MsgLen > 0
&& ( card->msgbuf[MsgLen-1] == '\n'
|| card->msgbuf[MsgLen-1] == '\r')) {
card->msgbuf[MsgLen-1] = 0;
MsgLen--;
}
printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
break;
case 0xff:
printk(KERN_ERR "%s: card reseted ?\n", card->name);
return;
default:
printk(KERN_ERR "%s: b1_interrupt: 0x%x ???\n",
card->name, b1cmd);
return;
}
}
}
/* ------------------------------------------------------------- */
static void t1isa_interrupt(int interrupt, void *devptr, struct pt_regs *regs)
{
avmcard *card;
card = (avmcard *) devptr;
if (!card) {
printk(KERN_WARNING "t1isa: interrupt: wrong device\n");
return;
}
if (card->interrupt) {
printk(KERN_ERR "%s: reentering interrupt hander.\n",
card->name);
return;
}
card->interrupt = 1;
t1_handle_interrupt(card);
card->interrupt = 0;
}
/* ------------------------------------------------------------- */
static int t1isa_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
unsigned int port = card->port;
unsigned long flags;
int retval;
t1_disable_irq(port);
b1_reset(port);
if ((retval = b1_load_t4file(card, &data->firmware))) {
b1_reset(port);
printk(KERN_ERR "%s: failed to load t4file!!\n",
card->name);
return retval;
}
if (data->configuration.len > 0 && data->configuration.data) {
if ((retval = b1_load_config(card, &data->configuration))) {
b1_reset(port);
printk(KERN_ERR "%s: failed to load config!!\n",
card->name);
return retval;
}
}
if (!b1_loaded(card)) {
printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
return -EIO;
}
save_flags(flags);
cli();
b1_setinterrupt(port, card->irq, card->cardtype);
b1_put_byte(port, SEND_INIT);
b1_put_word(port, CAPI_MAXAPPL);
b1_put_word(port, AVM_NCCI_PER_CHANNEL*30);
b1_put_word(port, ctrl->cnr - 1);
restore_flags(flags);
return 0;
}
void t1isa_reset_ctr(struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
unsigned int port = card->port;
t1_disable_irq(port);
b1_reset(port);
b1_reset(port);
memset(cinfo->version, 0, sizeof(cinfo->version));
ctrl->reseted(ctrl);
}
static void t1isa_remove_ctr(struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
unsigned int port = card->port;
t1_disable_irq(port);
b1_reset(port);
b1_reset(port);
t1_reset(port);
di->detach_ctr(ctrl);
free_irq(card->irq, card);
release_region(card->port, AVMB1_PORTLEN);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
}
/* ------------------------------------------------------------- */
static int t1isa_add_card(struct capi_driver *driver, struct capicardparams *p)
{
struct capi_ctr *ctrl;
avmctrl_info *cinfo;
avmcard *card;
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, "t1isa-%x", p->port);
card->port = p->port;
card->irq = p->irq;
card->cardtype = avm_t1isa;
card->cardnr = p->cardnr;
if (!(((card->port & 0x7) == 0) && ((card->port & 0x30) != 0x30))) {
printk(KERN_WARNING "%s: illegal port 0x%x.\n",
driver->name, card->port);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EINVAL;
}
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;
}
if (hema_irq_table[card->irq & 0xf] == 0) {
printk(KERN_WARNING "%s: irq %d not valid.\n",
driver->name, card->irq);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EINVAL;
}
for (ctrl = driver->controller; ctrl; ctrl = ctrl->next) {
avmcard *cardp = ((avmctrl_info *)(ctrl->driverdata))->card;
if (cardp->cardnr == card->cardnr) {
printk(KERN_WARNING "%s: card with number %d already installed at 0x%x.\n",
driver->name, card->cardnr, cardp->port);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EBUSY;
}
}
if ((retval = t1_detectandinit(card->port, card->irq, card->cardnr)) != 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;
}
t1_disable_irq(card->port);
b1_reset(card->port);
request_region(p->port, AVMB1_PORTLEN, card->name);
retval = request_irq(card->irq, t1isa_interrupt, 0, 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;
}
printk(KERN_INFO
"%s: AVM T1 ISA at i/o %#x, irq %d, card %d\n",
driver->name, card->port, card->irq, card->cardnr);
return 0;
}
static void t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
unsigned int port = card->port;
unsigned long flags;
__u16 len = CAPIMSG_LEN(skb->data);
__u8 cmd = CAPIMSG_COMMAND(skb->data);
__u8 subcmd = CAPIMSG_SUBCOMMAND(skb->data);
save_flags(flags);
cli();
if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
__u16 dlen = CAPIMSG_DATALEN(skb->data);
b1_put_byte(port, SEND_DATA_B3_REQ);
t1_put_slice(port, skb->data, len);
t1_put_slice(port, skb->data + len, dlen);
} else {
b1_put_byte(port, SEND_MESSAGE);
t1_put_slice(port, skb->data, len);
}
restore_flags(flags);
dev_kfree_skb(skb);
}
/* ------------------------------------------------------------- */
static char *t1isa_procinfo(struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
if (!cinfo)
return "";
sprintf(cinfo->infobuf, "%s %s 0x%x %d %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->cardnr : 0
);
return cinfo->infobuf;
}
/* ------------------------------------------------------------- */
static struct capi_driver t1isa_driver = {
name: "t1isa",
revision: "0.0",
load_firmware: t1isa_load_firmware,
reset_ctr: t1isa_reset_ctr,
remove_ctr: t1isa_remove_ctr,
register_appl: b1_register_appl,
release_appl: b1_release_appl,
send_message: t1isa_send_message,
procinfo: t1isa_procinfo,
ctr_read_proc: b1ctl_read_proc,
driver_read_proc: 0, /* use standard driver_read_proc */
add_card: t1isa_add_card,
};
static int __init t1isa_init(void)
{
struct capi_driver *driver = &t1isa_driver;
char *p;
int retval = 0;
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;
}
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);
retval = -EIO;
}
MOD_DEC_USE_COUNT;
return retval;
}
static void __exit t1isa_exit(void)
{
detach_capi_driver(&t1isa_driver);
}
module_init(t1isa_init);
module_exit(t1isa_exit);