patch-1.3.93 linux/drivers/isdn/pcbit/layer2.h

• Lines: 288
• Date: Sun Apr 21 11:56:14 1996
• Orig file: v1.3.92/linux/drivers/isdn/pcbit/layer2.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.92/linux/drivers/isdn/pcbit/layer2.h linux/drivers/isdn/pcbit/layer2.h
@@ -0,0 +1,287 @@
+/*
+ * Copyright (C) 1996 Universidade de Lisboa
+ * 
+ * Writen by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of 
+ * the GNU Public License, incorporated herein by reference.
+ */
+
+/*        
+ *        PCBIT-D low-layer interface definitions
+ */
+
+#ifndef LAYER2_H
+#define LAYER2_H
+
+#include <bytesex.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
+*/
+
+struct msg_fmt {
+#if __BYTE_ORDER == 1234              /* Little Endian */
+  u_char scmd;
+  u_char cmd;
+  u_char proc;
+  u_char cpu;
+#else
+#error "Non-Intel CPU"
+  u_char cpu;
+  u_char proc;
+  u_char cmd;
+  u_char scmd;
+#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 short refnum;
+        unsigned short dt_len;
+        unsigned short hdr_len;
+        struct sk_buff *skb;
+	unsigned short copied;
+        struct frame_buf * next;
+};
+
+#define MIN(a,b) ((a<b)?a:b)
+
+extern int pcbit_l2_write(struct pcbit_dev * dev, ulong msg, ushort refnum, 
+                          struct sk_buff *skb, unsigned short hdr_len);
+
+extern void pcbit_irq_handler(int interrupt, void *, struct pt_regs *regs);
+
+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
+
+
+
+
+
+
+