blob: dc174795726fcab31fbf43196bafb885e06278b8 [file] [log] [blame]
/* $Id: c4.c,v 1.1.4.1 2001/11/20 14:19:34 kai Exp $
*
* Module for AVM C4 & C2 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 <linux/kernelcapi.h>
#include <linux/init.h>
#include <asm/io.h>
#include <asm/processor.h>
#include <asm/uaccess.h>
#include <linux/netdevice.h>
#include "capicmd.h"
#include "capiutil.h"
#include "capilli.h"
#include "avmcard.h"
static char *revision = "$Revision: 1.1.4.1 $";
#undef CONFIG_C4_DEBUG
#undef CONFIG_C4_POLLDEBUG
/* ------------------------------------------------------------- */
static int suppress_pollack;
static struct pci_device_id c4_pci_tbl[] __initdata = {
{ PCI_VENDOR_ID_DEC,PCI_DEVICE_ID_DEC_21285, PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_C4 },
{ PCI_VENDOR_ID_DEC,PCI_DEVICE_ID_DEC_21285, PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_C2 },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, c4_pci_tbl);
MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM C2/C4 cards");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");
MODULE_PARM(suppress_pollack, "0-1i");
/* ------------------------------------------------------------- */
static struct capi_driver_interface *di;
/* ------------------------------------------------------------- */
static void c4_dispatch_tx(avmcard *card);
/* ------------------------------------------------------------- */
#define DC21285_DRAM_A0MR 0x40000000
#define DC21285_DRAM_A1MR 0x40004000
#define DC21285_DRAM_A2MR 0x40008000
#define DC21285_DRAM_A3MR 0x4000C000
#define CAS_OFFSET 0x88
#define DC21285_ARMCSR_BASE 0x42000000
#define PCI_OUT_INT_STATUS 0x30
#define PCI_OUT_INT_MASK 0x34
#define MAILBOX_0 0x50
#define MAILBOX_1 0x54
#define MAILBOX_2 0x58
#define MAILBOX_3 0x5C
#define DOORBELL 0x60
#define DOORBELL_SETUP 0x64
#define CHAN_1_CONTROL 0x90
#define CHAN_2_CONTROL 0xB0
#define DRAM_TIMING 0x10C
#define DRAM_ADDR_SIZE_0 0x110
#define DRAM_ADDR_SIZE_1 0x114
#define DRAM_ADDR_SIZE_2 0x118
#define DRAM_ADDR_SIZE_3 0x11C
#define SA_CONTROL 0x13C
#define XBUS_CYCLE 0x148
#define XBUS_STROBE 0x14C
#define DBELL_PCI_MASK 0x150
#define DBELL_SA_MASK 0x154
#define SDRAM_SIZE 0x1000000
/* ------------------------------------------------------------- */
#define MBOX_PEEK_POKE MAILBOX_0
#define DBELL_ADDR 0x01
#define DBELL_DATA 0x02
#define DBELL_RNWR 0x40
#define DBELL_INIT 0x80
/* ------------------------------------------------------------- */
#define MBOX_UP_ADDR MAILBOX_0
#define MBOX_UP_LEN MAILBOX_1
#define MBOX_DOWN_ADDR MAILBOX_2
#define MBOX_DOWN_LEN MAILBOX_3
#define DBELL_UP_HOST 0x00000100
#define DBELL_UP_ARM 0x00000200
#define DBELL_DOWN_HOST 0x00000400
#define DBELL_DOWN_ARM 0x00000800
#define DBELL_RESET_HOST 0x40000000
#define DBELL_RESET_ARM 0x80000000
/* ------------------------------------------------------------- */
#define DRAM_TIMING_DEF 0x001A01A5
#define DRAM_AD_SZ_DEF0 0x00000045
#define DRAM_AD_SZ_NULL 0x00000000
#define SA_CTL_ALLRIGHT 0x64AA0271
#define INIT_XBUS_CYCLE 0x100016DB
#define INIT_XBUS_STROBE 0xF1F1F1F1
/* ------------------------------------------------------------- */
#define RESET_TIMEOUT (15*HZ) /* 15 sec */
#define PEEK_POKE_TIMEOUT (HZ/10) /* 0.1 sec */
/* ------------------------------------------------------------- */
#define c4outmeml(addr, value) writel(value, addr)
#define c4inmeml(addr) readl(addr)
#define c4outmemw(addr, value) writew(value, addr)
#define c4inmemw(addr) readw(addr)
#define c4outmemb(addr, value) writeb(value, addr)
#define c4inmemb(addr) readb(addr)
/* ------------------------------------------------------------- */
static inline int wait_for_doorbell(avmcard *card, unsigned long t)
{
unsigned long stop;
stop = jiffies + t;
while (c4inmeml(card->mbase+DOORBELL) != 0xffffffff) {
if (!time_before(jiffies, stop))
return -1;
cpu_relax();
}
return 0;
}
static int c4_poke(avmcard *card, unsigned long off, unsigned long value)
{
if (wait_for_doorbell(card, HZ/10) < 0)
return -1;
c4outmeml(card->mbase+MBOX_PEEK_POKE, off);
c4outmeml(card->mbase+DOORBELL, DBELL_ADDR);
if (wait_for_doorbell(card, HZ/10) < 0)
return -1;
c4outmeml(card->mbase+MBOX_PEEK_POKE, value);
c4outmeml(card->mbase+DOORBELL, DBELL_DATA | DBELL_ADDR);
return 0;
}
static int c4_peek(avmcard *card, unsigned long off, unsigned long *valuep)
{
if (wait_for_doorbell(card, HZ/10) < 0)
return -1;
c4outmeml(card->mbase+MBOX_PEEK_POKE, off);
c4outmeml(card->mbase+DOORBELL, DBELL_RNWR | DBELL_ADDR);
if (wait_for_doorbell(card, HZ/10) < 0)
return -1;
*valuep = c4inmeml(card->mbase+MBOX_PEEK_POKE);
return 0;
}
/* ------------------------------------------------------------- */
static int c4_load_t4file(avmcard *card, capiloaddatapart * t4file)
{
__u32 val;
unsigned char *dp;
int left, retval;
__u32 loadoff = 0;
dp = t4file->data;
left = t4file->len;
while (left >= sizeof(__u32)) {
if (t4file->user) {
retval = copy_from_user(&val, dp, sizeof(val));
if (retval)
return -EFAULT;
} else {
memcpy(&val, dp, sizeof(val));
}
if (c4_poke(card, loadoff, val)) {
printk(KERN_ERR "%s: corrupted firmware file ?\n",
card->name);
return -EIO;
}
left -= sizeof(__u32);
dp += sizeof(__u32);
loadoff += sizeof(__u32);
}
if (left) {
val = 0;
if (t4file->user) {
retval = copy_from_user(&val, dp, left);
if (retval)
return -EFAULT;
} else {
memcpy(&val, dp, left);
}
if (c4_poke(card, loadoff, val)) {
printk(KERN_ERR "%s: corrupted firmware file ?\n",
card->name);
return -EIO;
}
}
return 0;
}
/* ------------------------------------------------------------- */
static inline void _put_byte(void **pp, __u8 val)
{
__u8 *s = *pp;
*s++ = val;
*pp = s;
}
static inline void _put_word(void **pp, __u32 val)
{
__u8 *s = *pp;
*s++ = val & 0xff;
*s++ = (val >> 8) & 0xff;
*s++ = (val >> 16) & 0xff;
*s++ = (val >> 24) & 0xff;
*pp = s;
}
static inline void _put_slice(void **pp, unsigned char *dp, unsigned int len)
{
unsigned i = len;
_put_word(pp, i);
while (i-- > 0)
_put_byte(pp, *dp++);
}
static inline __u8 _get_byte(void **pp)
{
__u8 *s = *pp;
__u8 val;
val = *s++;
*pp = s;
return val;
}
static inline __u32 _get_word(void **pp)
{
__u8 *s = *pp;
__u32 val;
val = *s++;
val |= (*s++ << 8);
val |= (*s++ << 16);
val |= (*s++ << 24);
*pp = s;
return val;
}
static inline __u32 _get_slice(void **pp, unsigned char *dp)
{
unsigned int len, i;
len = i = _get_word(pp);
while (i-- > 0) *dp++ = _get_byte(pp);
return len;
}
/* ------------------------------------------------------------- */
static void c4_reset(avmcard *card)
{
unsigned long stop;
c4outmeml(card->mbase+DOORBELL, DBELL_RESET_ARM);
stop = jiffies + HZ*10;
while (c4inmeml(card->mbase+DOORBELL) != 0xffffffff) {
if (!time_before(jiffies, stop))
return;
c4outmeml(card->mbase+DOORBELL, DBELL_ADDR);
cpu_relax();
}
c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0);
c4_poke(card, DC21285_ARMCSR_BASE + CHAN_2_CONTROL, 0);
}
/* ------------------------------------------------------------- */
static int c4_detect(avmcard *card)
{
unsigned long stop, dummy;
c4outmeml(card->mbase+PCI_OUT_INT_MASK, 0x0c);
if (c4inmeml(card->mbase+PCI_OUT_INT_MASK) != 0x0c)
return 1;
c4outmeml(card->mbase+DOORBELL, DBELL_RESET_ARM);
stop = jiffies + HZ*10;
while (c4inmeml(card->mbase+DOORBELL) != 0xffffffff) {
if (!time_before(jiffies, stop))
return 2;
c4outmeml(card->mbase+DOORBELL, DBELL_ADDR);
cpu_relax();
}
c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0);
c4_poke(card, DC21285_ARMCSR_BASE + CHAN_2_CONTROL, 0);
c4outmeml(card->mbase+MAILBOX_0, 0x55aa55aa);
if (c4inmeml(card->mbase+MAILBOX_0) != 0x55aa55aa) return 3;
c4outmeml(card->mbase+MAILBOX_0, 0xaa55aa55);
if (c4inmeml(card->mbase+MAILBOX_0) != 0xaa55aa55) return 4;
if (c4_poke(card, DC21285_ARMCSR_BASE+DBELL_SA_MASK, 0)) return 5;
if (c4_poke(card, DC21285_ARMCSR_BASE+DBELL_PCI_MASK, 0)) return 6;
if (c4_poke(card, DC21285_ARMCSR_BASE+SA_CONTROL, SA_CTL_ALLRIGHT))
return 7;
if (c4_poke(card, DC21285_ARMCSR_BASE+XBUS_CYCLE, INIT_XBUS_CYCLE))
return 8;
if (c4_poke(card, DC21285_ARMCSR_BASE+XBUS_STROBE, INIT_XBUS_STROBE))
return 8;
if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_TIMING, 0)) return 9;
mdelay(1);
if (c4_peek(card, DC21285_DRAM_A0MR, &dummy)) return 10;
if (c4_peek(card, DC21285_DRAM_A1MR, &dummy)) return 11;
if (c4_peek(card, DC21285_DRAM_A2MR, &dummy)) return 12;
if (c4_peek(card, DC21285_DRAM_A3MR, &dummy)) return 13;
if (c4_poke(card, DC21285_DRAM_A0MR+CAS_OFFSET, 0)) return 14;
if (c4_poke(card, DC21285_DRAM_A1MR+CAS_OFFSET, 0)) return 15;
if (c4_poke(card, DC21285_DRAM_A2MR+CAS_OFFSET, 0)) return 16;
if (c4_poke(card, DC21285_DRAM_A3MR+CAS_OFFSET, 0)) return 17;
mdelay(1);
if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_TIMING, DRAM_TIMING_DEF))
return 18;
if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_0,DRAM_AD_SZ_DEF0))
return 19;
if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_1,DRAM_AD_SZ_NULL))
return 20;
if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_2,DRAM_AD_SZ_NULL))
return 21;
if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_3,DRAM_AD_SZ_NULL))
return 22;
/* Transputer test */
if ( c4_poke(card, 0x000000, 0x11111111)
|| c4_poke(card, 0x400000, 0x22222222)
|| c4_poke(card, 0x800000, 0x33333333)
|| c4_poke(card, 0xC00000, 0x44444444))
return 23;
if ( c4_peek(card, 0x000000, &dummy) || dummy != 0x11111111
|| c4_peek(card, 0x400000, &dummy) || dummy != 0x22222222
|| c4_peek(card, 0x800000, &dummy) || dummy != 0x33333333
|| c4_peek(card, 0xC00000, &dummy) || dummy != 0x44444444)
return 24;
if ( c4_poke(card, 0x000000, 0x55555555)
|| c4_poke(card, 0x400000, 0x66666666)
|| c4_poke(card, 0x800000, 0x77777777)
|| c4_poke(card, 0xC00000, 0x88888888))
return 25;
if ( c4_peek(card, 0x000000, &dummy) || dummy != 0x55555555
|| c4_peek(card, 0x400000, &dummy) || dummy != 0x66666666
|| c4_peek(card, 0x800000, &dummy) || dummy != 0x77777777
|| c4_peek(card, 0xC00000, &dummy) || dummy != 0x88888888)
return 26;
return 0;
}
/* ------------------------------------------------------------- */
static void c4_dispatch_tx(avmcard *card)
{
avmcard_dmainfo *dma = card->dma;
unsigned long flags;
struct sk_buff *skb;
__u8 cmd, subcmd;
__u16 len;
__u32 txlen;
void *p;
save_flags(flags);
cli();
if (card->csr & DBELL_DOWN_ARM) { /* tx busy */
restore_flags(flags);
return;
}
skb = skb_dequeue(&dma->send_queue);
if (!skb) {
#ifdef CONFIG_C4_DEBUG
printk(KERN_DEBUG "%s: tx underrun\n", card->name);
#endif
restore_flags(flags);
return;
}
len = CAPIMSG_LEN(skb->data);
if (len) {
cmd = CAPIMSG_COMMAND(skb->data);
subcmd = CAPIMSG_SUBCOMMAND(skb->data);
p = dma->sendbuf;
if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
__u16 dlen = CAPIMSG_DATALEN(skb->data);
_put_byte(&p, SEND_DATA_B3_REQ);
_put_slice(&p, skb->data, len);
_put_slice(&p, skb->data + len, dlen);
} else {
_put_byte(&p, SEND_MESSAGE);
_put_slice(&p, skb->data, len);
}
txlen = (__u8 *)p - (__u8 *)dma->sendbuf;
#ifdef CONFIG_C4_DEBUG
printk(KERN_DEBUG "%s: tx put msg len=%d\n", card->name, txlen);
#endif
} else {
txlen = skb->len-2;
#ifdef CONFIG_C4_POLLDEBUG
if (skb->data[2] == SEND_POLLACK)
printk(KERN_INFO "%s: ack to c4\n", card->name);
#endif
#ifdef CONFIG_C4_DEBUG
printk(KERN_DEBUG "%s: tx put 0x%x len=%d\n",
card->name, skb->data[2], txlen);
#endif
memcpy(dma->sendbuf, skb->data+2, skb->len-2);
}
txlen = (txlen + 3) & ~3;
c4outmeml(card->mbase+MBOX_DOWN_ADDR, virt_to_phys(dma->sendbuf));
c4outmeml(card->mbase+MBOX_DOWN_LEN, txlen);
card->csr |= DBELL_DOWN_ARM;
c4outmeml(card->mbase+DOORBELL, DBELL_DOWN_ARM);
restore_flags(flags);
dev_kfree_skb_any(skb);
}
/* ------------------------------------------------------------- */
static void queue_pollack(avmcard *card)
{
struct sk_buff *skb;
void *p;
skb = alloc_skb(3, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, lost poll ack\n",
card->name);
return;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_POLLACK);
skb_put(skb, (__u8 *)p - (__u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
c4_dispatch_tx(card);
}
/* ------------------------------------------------------------- */
static void c4_handle_rx(avmcard *card)
{
avmcard_dmainfo *dma = card->dma;
struct capi_ctr *ctrl;
avmctrl_info *cinfo;
struct sk_buff *skb;
void *p = dma->recvbuf;
__u32 ApplId, MsgLen, DataB3Len, NCCI, WindowSize;
__u8 b1cmd = _get_byte(&p);
__u32 cidx;
#ifdef CONFIG_C4_DEBUG
printk(KERN_DEBUG "%s: rx 0x%x len=%lu\n", card->name,
b1cmd, (unsigned long)dma->recvlen);
#endif
switch (b1cmd) {
case RECEIVE_DATA_B3_IND:
ApplId = (unsigned) _get_word(&p);
MsgLen = _get_slice(&p, card->msgbuf);
DataB3Len = _get_slice(&p, card->databuf);
cidx = CAPIMSG_CONTROLLER(card->msgbuf)-card->cardnr;
if (cidx >= card->nlogcontr) cidx = 0;
ctrl = card->ctrlinfo[cidx].capi_ctrl;
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) _get_word(&p);
MsgLen = _get_slice(&p, card->msgbuf);
cidx = CAPIMSG_CONTROLLER(card->msgbuf)-card->cardnr;
if (cidx >= card->nlogcontr) cidx = 0;
ctrl = card->ctrlinfo[cidx].capi_ctrl;
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 = _get_word(&p);
NCCI = _get_word(&p);
WindowSize = _get_word(&p);
cidx = (NCCI&0x7f) - card->cardnr;
if (cidx >= card->nlogcontr) cidx = 0;
ctrl = card->ctrlinfo[cidx].capi_ctrl;
ctrl->new_ncci(ctrl, ApplId, NCCI, WindowSize);
break;
case RECEIVE_FREE_NCCI:
ApplId = _get_word(&p);
NCCI = _get_word(&p);
if (NCCI != 0xffffffff) {
cidx = (NCCI&0x7f) - card->cardnr;
if (cidx >= card->nlogcontr) cidx = 0;
ctrl = card->ctrlinfo[cidx].capi_ctrl;
if (ctrl)
ctrl->free_ncci(ctrl, ApplId, NCCI);
} else {
for (cidx=0; cidx < 4; cidx++) {
ctrl = card->ctrlinfo[cidx].capi_ctrl;
if (ctrl)
ctrl->appl_released(ctrl, ApplId);
}
}
break;
case RECEIVE_START:
#ifdef CONFIG_C4_POLLDEBUG
printk(KERN_INFO "%s: poll from c4\n", card->name);
#endif
if (!suppress_pollack)
queue_pollack(card);
for (cidx=0; cidx < 4; cidx++) {
ctrl = card->ctrlinfo[cidx].capi_ctrl;
if (ctrl)
ctrl->resume_output(ctrl);
}
break;
case RECEIVE_STOP:
for (cidx=0; cidx < 4; cidx++) {
ctrl = card->ctrlinfo[cidx].capi_ctrl;
if (ctrl)
ctrl->suspend_output(ctrl);
}
break;
case RECEIVE_INIT:
cidx = card->nlogcontr;
if (cidx >= 4 || !card->ctrlinfo[cidx].capi_ctrl) {
printk(KERN_ERR "%s: card with %d controllers ??\n",
card->name, cidx+1);
break;
}
card->nlogcontr++;
cinfo = &card->ctrlinfo[cidx];
ctrl = cinfo->capi_ctrl;
cinfo->versionlen = _get_slice(&p, 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(cinfo->capi_ctrl);
break;
case RECEIVE_TASK_READY:
ApplId = (unsigned) _get_word(&p);
MsgLen = _get_slice(&p, 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 = _get_slice(&p, 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;
default:
printk(KERN_ERR "%s: c4_interrupt: 0x%x ???\n",
card->name, b1cmd);
return;
}
}
/* ------------------------------------------------------------- */
static void c4_handle_interrupt(avmcard *card)
{
__u32 status = c4inmeml(card->mbase+DOORBELL);
if (status & DBELL_RESET_HOST) {
int i;
c4outmeml(card->mbase+PCI_OUT_INT_MASK, 0x0c);
if (card->nlogcontr == 0)
return;
printk(KERN_ERR "%s: unexpected reset\n", card->name);
for (i=0; i < 4; i++) {
avmctrl_info *cinfo = &card->ctrlinfo[i];
memset(cinfo->version, 0, sizeof(cinfo->version));
if (cinfo->capi_ctrl)
cinfo->capi_ctrl->reseted(cinfo->capi_ctrl);
}
card->nlogcontr = 0;
return;
}
status &= (DBELL_UP_HOST | DBELL_DOWN_HOST);
if (!status)
return;
c4outmeml(card->mbase+DOORBELL, status);
if ((status & DBELL_UP_HOST) != 0) {
card->dma->recvlen = c4inmeml(card->mbase+MBOX_UP_LEN);
c4outmeml(card->mbase+MBOX_UP_LEN, 0);
c4_handle_rx(card);
card->dma->recvlen = 0;
c4outmeml(card->mbase+MBOX_UP_LEN, sizeof(card->dma->recvbuf));
c4outmeml(card->mbase+DOORBELL, DBELL_UP_ARM);
}
if ((status & DBELL_DOWN_HOST) != 0) {
card->csr &= ~DBELL_DOWN_ARM;
c4_dispatch_tx(card);
} else if (card->csr & DBELL_DOWN_HOST) {
if (c4inmeml(card->mbase+MBOX_DOWN_LEN) == 0) {
card->csr &= ~DBELL_DOWN_ARM;
c4_dispatch_tx(card);
}
}
}
static void c4_interrupt(int interrupt, void *devptr, struct pt_regs *regs)
{
avmcard *card;
card = (avmcard *) devptr;
if (!card) {
printk(KERN_WARNING "%s: interrupt: wrong device\n", card->name);
return;
}
if (card->interrupt) {
printk(KERN_ERR "%s: reentering interrupt hander\n",
card->name);
return;
}
card->interrupt = 1;
c4_handle_interrupt(card);
card->interrupt = 0;
}
/* ------------------------------------------------------------- */
static void c4_send_init(avmcard *card)
{
struct sk_buff *skb;
void *p;
skb = alloc_skb(15, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, lost register appl.\n",
card->name);
return;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_INIT);
_put_word(&p, CAPI_MAXAPPL);
_put_word(&p, AVM_NCCI_PER_CHANNEL*30);
_put_word(&p, card->cardnr - 1);
skb_put(skb, (__u8 *)p - (__u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
c4_dispatch_tx(card);
}
static int queue_sendconfigword(avmcard *card, __u32 val)
{
struct sk_buff *skb;
void *p;
skb = alloc_skb(3+4, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, send config\n",
card->name);
return -ENOMEM;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_CONFIG);
_put_word(&p, val);
skb_put(skb, (__u8 *)p - (__u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
c4_dispatch_tx(card);
return 0;
}
static int queue_sendconfig(avmcard *card, char cval[4])
{
struct sk_buff *skb;
void *p;
skb = alloc_skb(3+4, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, send config\n",
card->name);
return -ENOMEM;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_CONFIG);
_put_byte(&p, cval[0]);
_put_byte(&p, cval[1]);
_put_byte(&p, cval[2]);
_put_byte(&p, cval[3]);
skb_put(skb, (__u8 *)p - (__u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
c4_dispatch_tx(card);
return 0;
}
static int c4_send_config(avmcard *card, capiloaddatapart * config)
{
__u8 val[4];
unsigned char *dp;
int left, retval;
if ((retval = queue_sendconfigword(card, 1)) != 0)
return retval;
if ((retval = queue_sendconfigword(card, config->len)) != 0)
return retval;
dp = config->data;
left = config->len;
while (left >= sizeof(__u32)) {
if (config->user) {
retval = copy_from_user(val, dp, sizeof(val));
if (retval)
return -EFAULT;
} else {
memcpy(val, dp, sizeof(val));
}
if ((retval = queue_sendconfig(card, val)) != 0)
return retval;
left -= sizeof(val);
dp += sizeof(val);
}
if (left) {
memset(val, 0, sizeof(val));
if (config->user) {
retval = copy_from_user(&val, dp, left);
if (retval)
return -EFAULT;
} else {
memcpy(&val, dp, left);
}
if ((retval = queue_sendconfig(card, val)) != 0)
return retval;
}
return 0;
}
static int c4_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
unsigned long flags;
int retval;
if ((retval = c4_load_t4file(card, &data->firmware))) {
printk(KERN_ERR "%s: failed to load t4file!!\n",
card->name);
c4_reset(card);
return retval;
}
save_flags(flags);
cli();
card->csr = 0;
c4outmeml(card->mbase+MBOX_UP_LEN, 0);
c4outmeml(card->mbase+MBOX_DOWN_LEN, 0);
c4outmeml(card->mbase+DOORBELL, DBELL_INIT);
mdelay(1);
c4outmeml(card->mbase+DOORBELL,
DBELL_UP_HOST | DBELL_DOWN_HOST | DBELL_RESET_HOST);
c4outmeml(card->mbase+PCI_OUT_INT_MASK, 0x08);
card->dma->recvlen = 0;
c4outmeml(card->mbase+MBOX_UP_ADDR, virt_to_phys(card->dma->recvbuf));
c4outmeml(card->mbase+MBOX_UP_LEN, sizeof(card->dma->recvbuf));
c4outmeml(card->mbase+DOORBELL, DBELL_UP_ARM);
restore_flags(flags);
if (data->configuration.len > 0 && data->configuration.data) {
retval = c4_send_config(card, &data->configuration);
if (retval) {
printk(KERN_ERR "%s: failed to set config!!\n",
card->name);
c4_reset(card);
return retval;
}
}
c4_send_init(card);
return 0;
}
void c4_reset_ctr(struct capi_ctr *ctrl)
{
avmcard *card = ((avmctrl_info *)(ctrl->driverdata))->card;
avmctrl_info *cinfo;
int i;
c4_reset(card);
for (i=0; i < 4; i++) {
cinfo = &card->ctrlinfo[i];
memset(cinfo->version, 0, sizeof(cinfo->version));
if (cinfo->capi_ctrl)
cinfo->capi_ctrl->reseted(cinfo->capi_ctrl);
}
card->nlogcontr = 0;
}
static void c4_remove_ctr(struct capi_ctr *ctrl)
{
avmcard *card = ((avmctrl_info *)(ctrl->driverdata))->card;
avmctrl_info *cinfo;
int i;
c4_reset(card);
for (i=0; i < 4; i++) {
cinfo = &card->ctrlinfo[i];
if (cinfo->capi_ctrl) {
di->detach_ctr(cinfo->capi_ctrl);
cinfo->capi_ctrl = NULL;
}
}
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;
}
/* ------------------------------------------------------------- */
void c4_register_appl(struct capi_ctr *ctrl,
__u16 appl,
capi_register_params *rp)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
struct sk_buff *skb;
int want = rp->level3cnt;
int nconn;
void *p;
if (ctrl->cnr == card->cardnr) {
if (want > 0) nconn = want;
else nconn = ctrl->profile.nbchannel * 4 * -want;
if (nconn == 0) nconn = ctrl->profile.nbchannel * 4;
skb = alloc_skb(23, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, lost register appl.\n",
card->name);
return;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_REGISTER);
_put_word(&p, appl);
_put_word(&p, 1024 * (nconn+1));
_put_word(&p, nconn);
_put_word(&p, rp->datablkcnt);
_put_word(&p, rp->datablklen);
skb_put(skb, (__u8 *)p - (__u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
c4_dispatch_tx(card);
}
ctrl->appl_registered(ctrl, appl);
}
/* ------------------------------------------------------------- */
void c4_release_appl(struct capi_ctr *ctrl, __u16 appl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
struct sk_buff *skb;
void *p;
if (ctrl->cnr == card->cardnr) {
skb = alloc_skb(7, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, lost release appl.\n",
card->name);
return;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_RELEASE);
_put_word(&p, appl);
skb_put(skb, (__u8 *)p - (__u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
c4_dispatch_tx(card);
}
}
/* ------------------------------------------------------------- */
static void c4_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
skb_queue_tail(&card->dma->send_queue, skb);
c4_dispatch_tx(card);
}
/* ------------------------------------------------------------- */
static char *c4_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 int c4_read_proc(char *page, char **start, off_t off,
int count, int *eof, struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
__u8 flag;
int len = 0;
char *s;
len += sprintf(page+len, "%-16s %s\n", "name", card->name);
len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase);
switch (card->cardtype) {
case avm_b1isa: s = "B1 ISA"; break;
case avm_b1pci: s = "B1 PCI"; break;
case avm_b1pcmcia: s = "B1 PCMCIA"; break;
case avm_m1: s = "M1"; break;
case avm_m2: s = "M2"; break;
case avm_t1isa: s = "T1 ISA (HEMA)"; break;
case avm_t1pci: s = "T1 PCI"; break;
case avm_c4: s = "C4"; break;
case avm_c2: s = "C2"; break;
default: s = "???"; break;
}
len += sprintf(page+len, "%-16s %s\n", "type", s);
if ((s = cinfo->version[VER_DRIVER]) != 0)
len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
if ((s = cinfo->version[VER_CARDTYPE]) != 0)
len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
if ((s = cinfo->version[VER_SERIAL]) != 0)
len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
if (card->cardtype != avm_m1) {
flag = ((__u8 *)(ctrl->profile.manu))[3];
if (flag)
len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
"protocol",
(flag & 0x01) ? " DSS1" : "",
(flag & 0x02) ? " CT1" : "",
(flag & 0x04) ? " VN3" : "",
(flag & 0x08) ? " NI1" : "",
(flag & 0x10) ? " AUSTEL" : "",
(flag & 0x20) ? " ESS" : "",
(flag & 0x40) ? " 1TR6" : ""
);
}
if (card->cardtype != avm_m1) {
flag = ((__u8 *)(ctrl->profile.manu))[5];
if (flag)
len += sprintf(page+len, "%-16s%s%s%s%s\n",
"linetype",
(flag & 0x01) ? " point to point" : "",
(flag & 0x02) ? " point to multipoint" : "",
(flag & 0x08) ? " leased line without D-channel" : "",
(flag & 0x04) ? " leased line with D-channel" : ""
);
}
len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
if (off+count >= len)
*eof = 1;
if (len < off)
return 0;
*start = page + off;
return ((count < len-off) ? count : len-off);
}
/* ------------------------------------------------------------- */
static int c4_add_card(struct capi_driver *driver,
struct capicardparams *p,
int nr)
{
avmctrl_info *cinfo;
avmcard *card;
int retval;
int i;
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)*4, 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)*4);
card->ctrlinfo = cinfo;
for (i=0; i < 4; i++) {
cinfo = &card->ctrlinfo[i];
cinfo->card = card;
}
sprintf(card->name, "%s-%x", driver->name, p->port);
card->port = p->port;
card->irq = p->irq;
card->membase = p->membase;
card->cardtype = nr == 4 ? avm_c4 : avm_c2;
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, 128);
if (card->mbase == 0) {
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;
}
if ((retval = c4_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;
}
c4_reset(card);
request_region(p->port, AVMB1_PORTLEN, card->name);
retval = request_irq(card->irq, c4_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;
}
for (i=0; i < nr ; i++) {
cinfo = &card->ctrlinfo[i];
cinfo->card = card;
cinfo->capi_ctrl = di->attach_ctr(driver, card->name, cinfo);
if (!cinfo->capi_ctrl) {
printk(KERN_ERR "%s: attach controller failed (%d).\n",
driver->name, i);
for (i--; i >= 0; i--) {
cinfo = &card->ctrlinfo[i];
di->detach_ctr(cinfo->capi_ctrl);
}
iounmap(card->mbase);
free_irq(card->irq, card);
release_region(card->port, AVMB1_PORTLEN);
kfree(card->dma);
kfree(card->ctrlinfo);
kfree(card);
MOD_DEC_USE_COUNT;
return -EBUSY;
}
if (i == 0)
card->cardnr = cinfo->capi_ctrl->cnr;
}
skb_queue_head_init(&card->dma->send_queue);
printk(KERN_INFO
"%s: AVM C%d at i/o %#x, irq %d, mem %#lx\n",
driver->name, nr, card->port, card->irq, card->membase);
return 0;
}
/* ------------------------------------------------------------- */
static struct capi_driver c2_driver = {
name: "c2",
revision: "0.0",
load_firmware: c4_load_firmware,
reset_ctr: c4_reset_ctr,
remove_ctr: c4_remove_ctr,
register_appl: c4_register_appl,
release_appl: c4_release_appl,
send_message: c4_send_message,
procinfo: c4_procinfo,
ctr_read_proc: c4_read_proc,
driver_read_proc: 0, /* use standard driver_read_proc */
add_card: 0, /* no add_card function */
};
static struct capi_driver c4_driver = {
name: "c4",
revision: "0.0",
load_firmware: c4_load_firmware,
reset_ctr: c4_reset_ctr,
remove_ctr: c4_remove_ctr,
register_appl: c4_register_appl,
release_appl: c4_release_appl,
send_message: c4_send_message,
procinfo: c4_procinfo,
ctr_read_proc: c4_read_proc,
driver_read_proc: 0, /* use standard driver_read_proc */
add_card: 0, /* no add_card function */
};
static int ncards = 0;
static int c4_attach_driver (struct capi_driver * driver)
{
char *p;
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);
MOD_DEC_USE_COUNT;
return -ENODEV;
}
return 0;
}
static int __init search_cards(struct capi_driver * driver,
int pci_id, int nr)
{
struct pci_dev * dev = NULL;
int retval = 0;
while ((dev = pci_find_subsys(
PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285,
PCI_VENDOR_ID_AVM, pci_id, dev))) {
struct capicardparams param;
if (pci_enable_device(dev) < 0) {
printk(KERN_ERR "%s: failed to enable AVM-C%d\n",
driver->name, nr);
continue;
}
pci_set_master(dev);
param.port = pci_resource_start(dev, 1);
param.irq = dev->irq;
param.membase = pci_resource_start(dev, 0);
printk(KERN_INFO
"%s: PCI BIOS reports AVM-C%d at i/o %#x, irq %d, mem %#x\n",
driver->name, nr, param.port, param.irq, param.membase);
retval = c4_add_card(driver, &param, nr);
if (retval != 0) {
printk(KERN_ERR
"%s: no AVM-C%d at i/o %#x, irq %d detected, mem %#x\n",
driver->name, nr, param.port, param.irq, param.membase);
continue;
}
ncards++;
}
return retval;
}
static int __init c4_init(void)
{
int retval;
MOD_INC_USE_COUNT;
retval = c4_attach_driver (&c4_driver);
if (retval) {
MOD_DEC_USE_COUNT;
return retval;
}
retval = c4_attach_driver (&c2_driver);
if (retval) {
MOD_DEC_USE_COUNT;
return retval;
}
retval = search_cards(&c4_driver, PCI_DEVICE_ID_AVM_C4, 4);
if (retval && ncards == 0) {
detach_capi_driver(&c2_driver);
detach_capi_driver(&c4_driver);
MOD_DEC_USE_COUNT;
return retval;
}
retval = search_cards(&c2_driver, PCI_DEVICE_ID_AVM_C2, 2);
if (retval && ncards == 0) {
detach_capi_driver(&c2_driver);
detach_capi_driver(&c4_driver);
MOD_DEC_USE_COUNT;
return retval;
}
if (ncards) {
printk(KERN_INFO "%s: %d C4/C2 card(s) detected\n",
c4_driver.name, ncards);
MOD_DEC_USE_COUNT;
return 0;
}
printk(KERN_ERR "%s: NO C4/C2 card detected\n", c4_driver.name);
detach_capi_driver(&c4_driver);
detach_capi_driver(&c2_driver);
MOD_DEC_USE_COUNT;
return -ENODEV;
}
static void __exit c4_exit(void)
{
detach_capi_driver(&c2_driver);
detach_capi_driver(&c4_driver);
}
module_init(c4_init);
module_exit(c4_exit);