289 строки
6.7 KiB
C
289 строки
6.7 KiB
C
/*
|
|
* PCBIT-D low-layer interface definitions
|
|
*
|
|
* Copyright (C) 1996 Universidade de Lisboa
|
|
*
|
|
* Written by Pedro Roque Marques (roque@di.fc.ul.pt)
|
|
*
|
|
* This software may be used and distributed according to the terms of
|
|
* the GNU General Public License, incorporated herein by reference.
|
|
*/
|
|
|
|
/*
|
|
* 19991203 - Fernando Carvalho - takion@superbofh.org
|
|
* Hacked to compile with egcs and run with current version of isdn modules
|
|
*/
|
|
|
|
#ifndef LAYER2_H
|
|
#define LAYER2_H
|
|
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <asm/byteorder.h>
|
|
|
|
#define BANK1 0x0000U /* PC -> Board */
|
|
#define BANK2 0x01ffU /* Board -> PC */
|
|
#define BANK3 0x03feU /* Att Board */
|
|
#define BANK4 0x03ffU /* Att PC */
|
|
|
|
#define BANKLEN 0x01FFU
|
|
|
|
#define LOAD_ZONE_START 0x03f8U
|
|
#define LOAD_ZONE_END 0x03fdU
|
|
|
|
#define LOAD_RETRY 18000000
|
|
|
|
|
|
|
|
/* TAM - XX - C - S - NUM */
|
|
#define PREHDR_LEN 8
|
|
/* TT - M - I - TH - TD */
|
|
#define FRAME_HDR_LEN 8
|
|
|
|
#define MSG_CONN_REQ 0x08000100
|
|
#define MSG_CONN_CONF 0x00000101
|
|
#define MSG_CONN_IND 0x00000102
|
|
#define MSG_CONN_RESP 0x08000103
|
|
|
|
#define MSG_CONN_ACTV_REQ 0x08000300
|
|
#define MSG_CONN_ACTV_CONF 0x00000301
|
|
#define MSG_CONN_ACTV_IND 0x00000302
|
|
#define MSG_CONN_ACTV_RESP 0x08000303
|
|
|
|
#define MSG_DISC_REQ 0x08000400
|
|
#define MSG_DISC_CONF 0x00000401
|
|
#define MSG_DISC_IND 0x00000402
|
|
#define MSG_DISC_RESP 0x08000403
|
|
|
|
#define MSG_TDATA_REQ 0x0908E200
|
|
#define MSG_TDATA_CONF 0x0000E201
|
|
#define MSG_TDATA_IND 0x0000E202
|
|
#define MSG_TDATA_RESP 0x0908E203
|
|
|
|
#define MSG_SELP_REQ 0x09004000
|
|
#define MSG_SELP_CONF 0x00004001
|
|
|
|
#define MSG_ACT_TRANSP_REQ 0x0908E000
|
|
#define MSG_ACT_TRANSP_CONF 0x0000E001
|
|
|
|
#define MSG_STPROT_REQ 0x09004100
|
|
#define MSG_STPROT_CONF 0x00004101
|
|
|
|
#define MSG_PING188_REQ 0x09030500
|
|
#define MSG_PING188_CONF 0x000005bc
|
|
|
|
#define MSG_WATCH188 0x09030400
|
|
|
|
#define MSG_API_ON 0x08020102
|
|
#define MSG_POOL_PCBIT 0x08020400
|
|
#define MSG_POOL_PCBIT_CONF 0x00000401
|
|
|
|
#define MSG_INFO_IND 0x00002602
|
|
#define MSG_INFO_RESP 0x08002603
|
|
|
|
#define MSG_DEBUG_188 0x0000ff00
|
|
|
|
/*
|
|
|
|
long 4 3 2 1
|
|
Intel 1 2 3 4
|
|
*/
|
|
|
|
#ifdef __LITTLE_ENDIAN
|
|
#define SET_MSG_SCMD(msg, ch) (msg = (msg & 0xffffff00) | (((ch) & 0xff)))
|
|
#define SET_MSG_CMD(msg, ch) (msg = (msg & 0xffff00ff) | (((ch) & 0xff) << 8))
|
|
#define SET_MSG_PROC(msg, ch) (msg = (msg & 0xff00ffff) | (((ch) & 0xff) << 16))
|
|
#define SET_MSG_CPU(msg, ch) (msg = (msg & 0x00ffffff) | (((ch) & 0xff) << 24))
|
|
|
|
#define GET_MSG_SCMD(msg) ((msg) & 0xFF)
|
|
#define GET_MSG_CMD(msg) ((msg) >> 8 & 0xFF)
|
|
#define GET_MSG_PROC(msg) ((msg) >> 16 & 0xFF)
|
|
#define GET_MSG_CPU(msg) ((msg) >> 24)
|
|
|
|
#else
|
|
#error "Non-Intel CPU"
|
|
#endif
|
|
|
|
#define MAX_QUEUED 7
|
|
|
|
#define SCHED_READ 0x01
|
|
#define SCHED_WRITE 0x02
|
|
|
|
#define SET_RUN_TIMEOUT 2*HZ /* 2 seconds */
|
|
|
|
struct frame_buf {
|
|
ulong msg;
|
|
unsigned int refnum;
|
|
unsigned int dt_len;
|
|
unsigned int hdr_len;
|
|
struct sk_buff *skb;
|
|
unsigned int copied;
|
|
struct frame_buf * next;
|
|
};
|
|
|
|
extern int pcbit_l2_write(struct pcbit_dev * dev, ulong msg, ushort refnum,
|
|
struct sk_buff *skb, unsigned short hdr_len);
|
|
|
|
extern irqreturn_t pcbit_irq_handler(int interrupt, void *);
|
|
|
|
extern struct pcbit_dev * dev_pcbit[MAX_PCBIT_CARDS];
|
|
|
|
#ifdef DEBUG
|
|
static __inline__ void log_state(struct pcbit_dev *dev) {
|
|
printk(KERN_DEBUG "writeptr = %ld\n",
|
|
(ulong) (dev->writeptr - dev->sh_mem));
|
|
printk(KERN_DEBUG "readptr = %ld\n",
|
|
(ulong) (dev->readptr - (dev->sh_mem + BANK2)));
|
|
printk(KERN_DEBUG "{rcv_seq=%01x, send_seq=%01x, unack_seq=%01x}\n",
|
|
dev->rcv_seq, dev->send_seq, dev->unack_seq);
|
|
}
|
|
#endif
|
|
|
|
static __inline__ struct pcbit_dev * chan2dev(struct pcbit_chan * chan)
|
|
{
|
|
struct pcbit_dev * dev;
|
|
int i;
|
|
|
|
|
|
for (i=0; i<MAX_PCBIT_CARDS; i++)
|
|
if ((dev=dev_pcbit[i]))
|
|
if (dev->b1 == chan || dev->b2 == chan)
|
|
return dev;
|
|
return NULL;
|
|
|
|
}
|
|
|
|
static __inline__ struct pcbit_dev * finddev(int id)
|
|
{
|
|
struct pcbit_dev * dev;
|
|
int i;
|
|
|
|
for (i=0; i<MAX_PCBIT_CARDS; i++)
|
|
if ((dev=dev_pcbit[i]))
|
|
if (dev->id == id)
|
|
return dev;
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/*
|
|
* Support routines for reading and writing in the board
|
|
*/
|
|
|
|
static __inline__ void pcbit_writeb(struct pcbit_dev *dev, unsigned char dt)
|
|
{
|
|
writeb(dt, dev->writeptr++);
|
|
if (dev->writeptr == dev->sh_mem + BANKLEN)
|
|
dev->writeptr = dev->sh_mem;
|
|
}
|
|
|
|
static __inline__ void pcbit_writew(struct pcbit_dev *dev, unsigned short dt)
|
|
{
|
|
int dist;
|
|
|
|
dist = BANKLEN - (dev->writeptr - dev->sh_mem);
|
|
switch (dist) {
|
|
case 2:
|
|
writew(dt, dev->writeptr);
|
|
dev->writeptr = dev->sh_mem;
|
|
break;
|
|
case 1:
|
|
writeb((u_char) (dt & 0x00ffU), dev->writeptr);
|
|
dev->writeptr = dev->sh_mem;
|
|
writeb((u_char) (dt >> 8), dev->writeptr++);
|
|
break;
|
|
default:
|
|
writew(dt, dev->writeptr);
|
|
dev->writeptr += 2;
|
|
break;
|
|
};
|
|
}
|
|
|
|
static __inline__ void memcpy_topcbit(struct pcbit_dev * dev, u_char * data,
|
|
int len)
|
|
{
|
|
int diff;
|
|
|
|
diff = len - (BANKLEN - (dev->writeptr - dev->sh_mem) );
|
|
|
|
if (diff > 0)
|
|
{
|
|
memcpy_toio(dev->writeptr, data, len - diff);
|
|
memcpy_toio(dev->sh_mem, data + (len - diff), diff);
|
|
dev->writeptr = dev->sh_mem + diff;
|
|
}
|
|
else
|
|
{
|
|
memcpy_toio(dev->writeptr, data, len);
|
|
|
|
dev->writeptr += len;
|
|
if (diff == 0)
|
|
dev->writeptr = dev->sh_mem;
|
|
}
|
|
}
|
|
|
|
static __inline__ unsigned char pcbit_readb(struct pcbit_dev *dev)
|
|
{
|
|
unsigned char val;
|
|
|
|
val = readb(dev->readptr++);
|
|
if (dev->readptr == dev->sh_mem + BANK2 + BANKLEN)
|
|
dev->readptr = dev->sh_mem + BANK2;
|
|
|
|
return val;
|
|
}
|
|
|
|
static __inline__ unsigned short pcbit_readw(struct pcbit_dev *dev)
|
|
{
|
|
int dist;
|
|
unsigned short val;
|
|
|
|
dist = BANKLEN - ( dev->readptr - (dev->sh_mem + BANK2 ) );
|
|
switch (dist) {
|
|
case 2:
|
|
val = readw(dev->readptr);
|
|
dev->readptr = dev->sh_mem + BANK2;
|
|
break;
|
|
case 1:
|
|
val = readb(dev->readptr);
|
|
dev->readptr = dev->sh_mem + BANK2;
|
|
val = (readb(dev->readptr++) << 8) | val;
|
|
break;
|
|
default:
|
|
val = readw(dev->readptr);
|
|
dev->readptr += 2;
|
|
break;
|
|
};
|
|
return val;
|
|
}
|
|
|
|
static __inline__ void memcpy_frompcbit(struct pcbit_dev * dev, u_char * data, int len)
|
|
{
|
|
int diff;
|
|
|
|
diff = len - (BANKLEN - (dev->readptr - (dev->sh_mem + BANK2) ) );
|
|
if (diff > 0)
|
|
{
|
|
memcpy_fromio(data, dev->readptr, len - diff);
|
|
memcpy_fromio(data + (len - diff), dev->sh_mem + BANK2 , diff);
|
|
dev->readptr = dev->sh_mem + BANK2 + diff;
|
|
}
|
|
else
|
|
{
|
|
memcpy_fromio(data, dev->readptr, len);
|
|
dev->readptr += len;
|
|
if (diff == 0)
|
|
dev->readptr = dev->sh_mem + BANK2;
|
|
}
|
|
}
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|