Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

drivers/isdn/Kconfig

@@ -0,0 +1,67 @@
+#
+# ISDN device configuration
+#
+
+menu "ISDN subsystem"
+
+config ISDN
+	tristate "ISDN support"
+	depends on NET
+	---help---
+	  ISDN ("Integrated Services Digital Networks", called RNIS in France)
+	  is a special type of fully digital telephone service; it's mostly
+	  used to connect to your Internet service provider (with SLIP or
+	  PPP).  The main advantage is that the speed is higher than ordinary
+	  modem/telephone connections, and that you can have voice
+	  conversations while downloading stuff.  It only works if your
+	  computer is equipped with an ISDN card and both you and your service
+	  provider purchased an ISDN line from the phone company.  For
+	  details, read <http://www.alumni.caltech.edu/~dank/isdn/> on the WWW.
+
+	  Select this option if you want your kernel to support ISDN.
+
+
+menu "Old ISDN4Linux"
+	depends on NET && ISDN
+
+config ISDN_I4L
+	tristate "Old ISDN4Linux (obsolete)"
+	---help---
+	  This driver allows you to use an ISDN-card for networking
+	  connections and as dialin/out device.  The isdn-tty's have a built
+	  in AT-compatible modem emulator.  Network devices support autodial,
+	  channel-bundling, callback and caller-authentication without having
+	  a daemon running.  A reduced T.70 protocol is supported with tty's
+	  suitable for German BTX.  On D-Channel, the protocols EDSS1
+	  (Euro-ISDN) and 1TR6 (German style) are supported.  See
+	  <file:Documentation/isdn/README> for more information.
+
+	  ISDN support in the linux kernel is moving towards a new API,
+	  called CAPI (Common ISDN Application Programming Interface).
+	  Therefore the old ISDN4Linux layer is becoming obsolete. It is 
+	  still usable, though, if you select this option.
+
+if ISDN_I4L
+source "drivers/isdn/i4l/Kconfig"
+endif
+
+endmenu
+
+comment "CAPI subsystem"
+	depends on NET && ISDN
+
+config ISDN_CAPI
+	tristate "CAPI2.0 support"
+	depends on ISDN
+	help
+	  This provides the CAPI (Common ISDN Application Programming
+	  Interface, a standard making it easy for programs to access ISDN
+	  hardware, see <http://www.capi.org/>.  This is needed for AVM's set
+	  of active ISDN controllers like B1, T1, M1.
+
+source "drivers/isdn/capi/Kconfig"
+
+source "drivers/isdn/hardware/Kconfig"
+
+endmenu
+

drivers/isdn/Makefile

@@ -0,0 +1,15 @@
+# Makefile for the kernel ISDN subsystem and device drivers.
+
+# Object files in subdirectories
+
+obj-$(CONFIG_ISDN_I4L)			+= i4l/
+obj-$(CONFIG_ISDN_CAPI)			+= capi/
+obj-$(CONFIG_ISDN_CAPI)			+= hardware/
+obj-$(CONFIG_ISDN_DIVERSION)		+= divert/
+obj-$(CONFIG_ISDN_DRV_HISAX)		+= hisax/
+obj-$(CONFIG_ISDN_DRV_ICN)		+= icn/
+obj-$(CONFIG_ISDN_DRV_PCBIT)		+= pcbit/
+obj-$(CONFIG_ISDN_DRV_SC)		+= sc/
+obj-$(CONFIG_ISDN_DRV_LOOP)		+= isdnloop/
+obj-$(CONFIG_ISDN_DRV_ACT2000)		+= act2000/
+obj-$(CONFIG_HYSDN)			+= hysdn/

drivers/isdn/act2000/Kconfig

@@ -0,0 +1,13 @@
+#
+# Config.in for IBM Active 2000 ISDN driver
+#
+config ISDN_DRV_ACT2000
+	tristate "IBM Active 2000 support"
+	depends on ISDN_I4L && ISA
+	help
+	  Say Y here if you have an IBM Active 2000 ISDN card. In order to use
+	  this card, additional firmware is necessary, which has to be loaded
+	  into the card using a utility which is part of the latest
+	  isdn4k-utils package. Please read the file
+	  <file:Documentation/isdn/README.act2000> for more information.
+

drivers/isdn/act2000/Makefile

@@ -0,0 +1,9 @@
+# Makefile for the act2000 ISDN device driver
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_ISDN_DRV_ACT2000)	+= act2000.o
+
+# Multipart objects.
+
+act2000-y			:= module.o capi.o act2000_isa.o

drivers/isdn/act2000/act2000.h

@@ -0,0 +1,202 @@
+/* $Id: act2000.h,v 1.8.6.3 2001/09/23 22:24:32 kai Exp $
+ *
+ * ISDN lowlevel-module for the IBM ISDN-S0 Active 2000.
+ *
+ * Author       Fritz Elfert
+ * Copyright    by Fritz Elfert      <fritz@isdn4linux.de>
+ * 
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * Thanks to Friedemann Baitinger and IBM Germany
+ *
+ */
+
+#ifndef act2000_h
+#define act2000_h
+
+#include <linux/compiler.h>
+
+#define ACT2000_IOCTL_SETPORT    1
+#define ACT2000_IOCTL_GETPORT    2
+#define ACT2000_IOCTL_SETIRQ     3
+#define ACT2000_IOCTL_GETIRQ     4
+#define ACT2000_IOCTL_SETBUS     5
+#define ACT2000_IOCTL_GETBUS     6
+#define ACT2000_IOCTL_SETPROTO   7
+#define ACT2000_IOCTL_GETPROTO   8
+#define ACT2000_IOCTL_SETMSN     9
+#define ACT2000_IOCTL_GETMSN    10
+#define ACT2000_IOCTL_LOADBOOT  11
+#define ACT2000_IOCTL_ADDCARD   12
+
+#define ACT2000_IOCTL_TEST      98
+#define ACT2000_IOCTL_DEBUGVAR  99
+
+#define ACT2000_BUS_ISA          1
+#define ACT2000_BUS_MCA          2
+#define ACT2000_BUS_PCMCIA       3
+
+/* Struct for adding new cards */
+typedef struct act2000_cdef {
+	int bus;
+        int port;
+        int irq;
+        char id[10];
+} act2000_cdef;
+
+/* Struct for downloading firmware */
+typedef struct act2000_ddef {
+        int length;             /* Length of code */
+        char __user *buffer;    /* Ptr. to code   */
+} act2000_ddef;
+
+typedef struct act2000_fwid {
+        char isdn[4];
+        char revlen[2];
+        char revision[504];
+} act2000_fwid;
+
+#if defined(__KERNEL__) || defined(__DEBUGVAR__)
+
+#ifdef __KERNEL__
+/* Kernel includes */
+
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/workqueue.h>
+#include <linux/interrupt.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/major.h>
+#include <asm/io.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <linux/ioport.h>
+#include <linux/timer.h>
+#include <linux/wait.h>
+#include <linux/delay.h>
+#include <linux/ctype.h>
+#include <linux/isdnif.h>
+
+#endif                           /* __KERNEL__ */
+
+#define ACT2000_PORTLEN        8
+
+#define ACT2000_FLAGS_RUNNING  1 /* Cards driver activated */
+#define ACT2000_FLAGS_PVALID   2 /* Cards port is valid    */
+#define ACT2000_FLAGS_IVALID   4 /* Cards irq is valid     */
+#define ACT2000_FLAGS_LOADED   8 /* Firmware loaded        */
+
+#define ACT2000_BCH            2 /* # of channels per card */
+
+/* D-Channel states */
+#define ACT2000_STATE_NULL     0
+#define ACT2000_STATE_ICALL    1
+#define ACT2000_STATE_OCALL    2
+#define ACT2000_STATE_IWAIT    3
+#define ACT2000_STATE_OWAIT    4
+#define ACT2000_STATE_IBWAIT   5
+#define ACT2000_STATE_OBWAIT   6
+#define ACT2000_STATE_BWAIT    7
+#define ACT2000_STATE_BHWAIT   8
+#define ACT2000_STATE_BHWAIT2  9
+#define ACT2000_STATE_DHWAIT  10
+#define ACT2000_STATE_DHWAIT2 11
+#define ACT2000_STATE_BSETUP  12
+#define ACT2000_STATE_ACTIVE  13
+
+#define ACT2000_MAX_QUEUED  8000 /* 2 * maxbuff */
+
+#define ACT2000_LOCK_TX 0
+#define ACT2000_LOCK_RX 1
+
+typedef struct act2000_chan {
+	unsigned short callref;          /* Call Reference              */
+	unsigned short fsm_state;        /* Current D-Channel state     */
+	unsigned short eazmask;          /* EAZ-Mask for this Channel   */
+	short queued;                    /* User-Data Bytes in TX queue */
+	unsigned short plci;
+	unsigned short ncci;
+	unsigned char  l2prot;           /* Layer 2 protocol            */
+	unsigned char  l3prot;           /* Layer 3 protocol            */
+} act2000_chan;
+
+typedef struct msn_entry {
+	char eaz;
+        char msn[16];
+        struct msn_entry * next;
+} msn_entry;
+
+typedef struct irq_data_isa {
+	__u8           *rcvptr;
+	__u16           rcvidx;
+	__u16           rcvlen;
+	struct sk_buff *rcvskb;
+	__u8            rcvignore;
+	__u8            rcvhdr[8];
+} irq_data_isa;
+
+typedef union irq_data {
+	irq_data_isa isa;
+} irq_data;
+
+/*
+ * Per card driver data
+ */
+typedef struct act2000_card {
+	unsigned short port;		/* Base-port-address                */
+	unsigned short irq;		/* Interrupt                        */
+	u_char ptype;			/* Protocol type (1TR6 or Euro)     */
+	u_char bus;			/* Cardtype (ISA, MCA, PCMCIA)      */
+	struct act2000_card *next;	/* Pointer to next device struct    */
+	spinlock_t lock;		/* protect critical operations      */
+	int myid;			/* Driver-Nr. assigned by linklevel */
+	unsigned long flags;		/* Statusflags                      */
+	unsigned long ilock;		/* Semaphores for IRQ-Routines      */
+	struct sk_buff_head rcvq;	/* Receive-Message queue            */
+	struct sk_buff_head sndq;	/* Send-Message queue               */
+	struct sk_buff_head ackq;	/* Data-Ack-Message queue           */
+	u_char *ack_msg;		/* Ptr to User Data in User skb     */
+	__u16 need_b3ack;		/* Flag: Need ACK for current skb   */
+	struct sk_buff *sbuf;		/* skb which is currently sent      */
+	struct timer_list ptimer;	/* Poll timer                       */
+	struct work_struct snd_tq;	/* Task struct for xmit bh          */
+	struct work_struct rcv_tq;	/* Task struct for rcv bh           */
+	struct work_struct poll_tq;	/* Task struct for polled rcv bh    */
+	msn_entry *msn_list;
+	unsigned short msgnum;		/* Message number for sending       */
+	spinlock_t mnlock;		/* lock for msgnum                  */
+	act2000_chan bch[ACT2000_BCH];	/* B-Channel status/control         */
+	char   status_buf[256];		/* Buffer for status messages       */
+	char   *status_buf_read;
+	char   *status_buf_write;
+	char   *status_buf_end;
+	irq_data idat;			/* Data used for IRQ handler        */
+	isdn_if interface;		/* Interface to upper layer         */
+	char regname[35];		/* Name used for request_region     */
+} act2000_card;
+
+extern __inline__ void act2000_schedule_tx(act2000_card *card)
+{
+        schedule_work(&card->snd_tq);
+}
+
+extern __inline__ void act2000_schedule_rx(act2000_card *card)
+{
+        schedule_work(&card->rcv_tq);
+}
+
+extern __inline__ void act2000_schedule_poll(act2000_card *card)
+{
+        schedule_work(&card->poll_tq);
+}
+
+extern char *act2000_find_eaz(act2000_card *, char);
+
+#endif                          /* defined(__KERNEL__) || defined(__DEBUGVAR__) */
+#endif                          /* act2000_h */

drivers/isdn/act2000/act2000_isa.c

@@ -0,0 +1,449 @@
+/* $Id: act2000_isa.c,v 1.11.6.3 2001/09/23 22:24:32 kai Exp $
+ *
+ * ISDN lowlevel-module for the IBM ISDN-S0 Active 2000 (ISA-Version).
+ *
+ * Author       Fritz Elfert
+ * Copyright    by Fritz Elfert      <fritz@isdn4linux.de>
+ * 
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * Thanks to Friedemann Baitinger and IBM Germany
+ *
+ */
+
+#include "act2000.h"
+#include "act2000_isa.h"
+#include "capi.h"
+
+static act2000_card *irq2card_map[16];
+
+/*
+ * Reset Controller, then try to read the Card's signature.
+ + Return:
+ *   1 = Signature found.
+ *   0 = Signature not found.
+ */
+static int
+act2000_isa_reset(unsigned short portbase)
+{
+        unsigned char reg;
+        int i;
+        int found;
+        int serial = 0;
+
+        found = 0;
+        if ((reg = inb(portbase + ISA_COR)) != 0xff) {
+                outb(reg | ISA_COR_RESET, portbase + ISA_COR);
+                mdelay(10);
+                outb(reg, portbase + ISA_COR);
+                mdelay(10);
+
+                for (i = 0; i < 16; i++) {
+                        if (inb(portbase + ISA_ISR) & ISA_ISR_SERIAL)
+                                serial |= 0x10000;
+                        serial >>= 1;
+                }
+                if (serial == ISA_SER_ID)
+                        found++;
+        }
+        return found;
+}
+
+int
+act2000_isa_detect(unsigned short portbase)
+{
+        int ret = 0;
+
+	if (request_region(portbase, ACT2000_PORTLEN, "act2000isa")) {
+                ret = act2000_isa_reset(portbase);
+		release_region(portbase, ISA_REGION);
+	}
+        return ret;
+}
+
+static irqreturn_t
+act2000_isa_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+        act2000_card *card = irq2card_map[irq];
+        u_char istatus;
+
+        if (!card) {
+                printk(KERN_WARNING
+                       "act2000: Spurious interrupt!\n");
+                return IRQ_NONE;
+        }
+        istatus = (inb(ISA_PORT_ISR) & 0x07);
+        if (istatus & ISA_ISR_OUT) {
+                /* RX fifo has data */
+		istatus &= ISA_ISR_OUT_MASK;
+		outb(0, ISA_PORT_SIS);
+		act2000_isa_receive(card);
+		outb(ISA_SIS_INT, ISA_PORT_SIS);
+        }
+        if (istatus & ISA_ISR_ERR) {
+                /* Error Interrupt */
+		istatus &= ISA_ISR_ERR_MASK;
+                printk(KERN_WARNING "act2000: errIRQ\n");
+        }
+	if (istatus)
+		printk(KERN_DEBUG "act2000: ?IRQ %d %02x\n", irq, istatus);
+	return IRQ_HANDLED;
+}
+
+static void
+act2000_isa_select_irq(act2000_card * card)
+{
+	unsigned char reg;
+
+	reg = (inb(ISA_PORT_COR) & ~ISA_COR_IRQOFF) | ISA_COR_PERR;
+	switch (card->irq) {
+		case 3:
+			reg = ISA_COR_IRQ03;
+			break;
+		case 5:
+			reg = ISA_COR_IRQ05;
+			break;
+		case 7:
+			reg = ISA_COR_IRQ07;
+			break;
+		case 10:
+			reg = ISA_COR_IRQ10;
+			break;
+		case 11:
+			reg = ISA_COR_IRQ11;
+			break;
+		case 12:
+			reg = ISA_COR_IRQ12;
+			break;
+		case 15:
+			reg = ISA_COR_IRQ15;
+			break;
+	}
+	outb(reg, ISA_PORT_COR);
+}
+
+static void
+act2000_isa_enable_irq(act2000_card * card)
+{
+	act2000_isa_select_irq(card);
+	/* Enable READ irq */
+	outb(ISA_SIS_INT, ISA_PORT_SIS);
+}
+
+/*
+ * Install interrupt handler, enable irq on card.
+ * If irq is -1, choose next free irq, else irq is given explicitely.
+ */
+int
+act2000_isa_config_irq(act2000_card * card, short irq)
+{
+        if (card->flags & ACT2000_FLAGS_IVALID) {
+                free_irq(card->irq, NULL);
+                irq2card_map[card->irq] = NULL;
+        }
+        card->flags &= ~ACT2000_FLAGS_IVALID;
+        outb(ISA_COR_IRQOFF, ISA_PORT_COR);
+        if (!irq)
+                return 0;
+
+	if (!request_irq(irq, &act2000_isa_interrupt, 0, card->regname, NULL)) {
+		card->irq = irq;
+		irq2card_map[card->irq] = card;
+		card->flags |= ACT2000_FLAGS_IVALID;
+                printk(KERN_WARNING
+                       "act2000: Could not request irq %d\n",irq);
+                return -EBUSY;
+        } else {
+		act2000_isa_select_irq(card);
+                /* Disable READ and WRITE irq */
+                outb(0, ISA_PORT_SIS);
+                outb(0, ISA_PORT_SOS);
+        }
+        return 0;
+}
+
+int
+act2000_isa_config_port(act2000_card * card, unsigned short portbase)
+{
+        if (card->flags & ACT2000_FLAGS_PVALID) {
+                release_region(card->port, ISA_REGION);
+                card->flags &= ~ACT2000_FLAGS_PVALID;
+        }
+	if (request_region(portbase, ACT2000_PORTLEN, card->regname) == NULL)
+		return -EBUSY;
+	else {
+                card->port = portbase;
+                card->flags |= ACT2000_FLAGS_PVALID;
+                return 0;
+        }
+}
+
+/*
+ * Release ressources, used by an adaptor.
+ */
+void
+act2000_isa_release(act2000_card * card)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&card->lock, flags);
+        if (card->flags & ACT2000_FLAGS_IVALID) {
+                free_irq(card->irq, NULL);
+                irq2card_map[card->irq] = NULL;
+        }
+        card->flags &= ~ACT2000_FLAGS_IVALID;
+        if (card->flags & ACT2000_FLAGS_PVALID)
+                release_region(card->port, ISA_REGION);
+        card->flags &= ~ACT2000_FLAGS_PVALID;
+        spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static int
+act2000_isa_writeb(act2000_card * card, u_char data)
+{
+        u_char timeout = 40;
+
+        while (timeout) {
+                if (inb(ISA_PORT_SOS) & ISA_SOS_READY) {
+                        outb(data, ISA_PORT_SDO);
+                        return 0;
+                } else {
+                        timeout--;
+                        udelay(10);
+                }
+        }
+        return 1;
+}
+
+static int
+act2000_isa_readb(act2000_card * card, u_char * data)
+{
+        u_char timeout = 40;
+
+        while (timeout) {
+                if (inb(ISA_PORT_SIS) & ISA_SIS_READY) {
+                        *data = inb(ISA_PORT_SDI);
+                        return 0;
+                } else {
+                        timeout--;
+                        udelay(10);
+                }
+        }
+        return 1;
+}
+
+void
+act2000_isa_receive(act2000_card *card)
+{
+	u_char c;
+
+        if (test_and_set_bit(ACT2000_LOCK_RX, (void *) &card->ilock) != 0)
+		return;
+	while (!act2000_isa_readb(card, &c)) {
+		if (card->idat.isa.rcvidx < 8) {
+                        card->idat.isa.rcvhdr[card->idat.isa.rcvidx++] = c;
+			if (card->idat.isa.rcvidx == 8) {
+				int valid = actcapi_chkhdr(card, (actcapi_msghdr *)&card->idat.isa.rcvhdr);
+
+				if (valid) {
+					card->idat.isa.rcvlen = ((actcapi_msghdr *)&card->idat.isa.rcvhdr)->len;
+					card->idat.isa.rcvskb = dev_alloc_skb(card->idat.isa.rcvlen);
+					if (card->idat.isa.rcvskb == NULL) {
+						card->idat.isa.rcvignore = 1;
+						printk(KERN_WARNING
+						       "act2000_isa_receive: no memory\n");
+						test_and_clear_bit(ACT2000_LOCK_RX, (void *) &card->ilock);
+						return;
+					}
+					memcpy(skb_put(card->idat.isa.rcvskb, 8), card->idat.isa.rcvhdr, 8);
+					card->idat.isa.rcvptr = skb_put(card->idat.isa.rcvskb, card->idat.isa.rcvlen - 8);
+				} else {
+					card->idat.isa.rcvidx = 0;
+					printk(KERN_WARNING
+					       "act2000_isa_receive: Invalid CAPI msg\n");
+					{
+						int i; __u8 *p; __u8 *c; __u8 tmp[30];
+						for (i = 0, p = (__u8 *)&card->idat.isa.rcvhdr, c = tmp; i < 8; i++)
+							c += sprintf(c, "%02x ", *(p++));
+						printk(KERN_WARNING "act2000_isa_receive: %s\n", tmp);
+					}
+				}
+			}
+		} else {
+			if (!card->idat.isa.rcvignore)
+				*card->idat.isa.rcvptr++ = c;
+			if (++card->idat.isa.rcvidx >= card->idat.isa.rcvlen) {
+				if (!card->idat.isa.rcvignore) {
+					skb_queue_tail(&card->rcvq, card->idat.isa.rcvskb);
+					act2000_schedule_rx(card);
+				}
+				card->idat.isa.rcvidx = 0;
+				card->idat.isa.rcvlen = 8;
+				card->idat.isa.rcvignore = 0;
+				card->idat.isa.rcvskb = NULL;
+				card->idat.isa.rcvptr = card->idat.isa.rcvhdr;
+			}
+		}
+	}
+	if (!(card->flags & ACT2000_FLAGS_IVALID)) {
+		/* In polling mode, schedule myself */
+		if ((card->idat.isa.rcvidx) &&
+		    (card->idat.isa.rcvignore ||
+		     (card->idat.isa.rcvidx < card->idat.isa.rcvlen)))
+			act2000_schedule_poll(card);
+	}
+	test_and_clear_bit(ACT2000_LOCK_RX, (void *) &card->ilock);
+}
+
+void
+act2000_isa_send(act2000_card * card)
+{
+	unsigned long flags;
+	struct sk_buff *skb;
+	actcapi_msg *msg;
+	int l;
+
+        if (test_and_set_bit(ACT2000_LOCK_TX, (void *) &card->ilock) != 0)
+		return;
+	while (1) {
+		spin_lock_irqsave(&card->lock, flags);
+		if (!(card->sbuf)) {
+			if ((card->sbuf = skb_dequeue(&card->sndq))) {
+				card->ack_msg = card->sbuf->data;
+				msg = (actcapi_msg *)card->sbuf->data;
+				if ((msg->hdr.cmd.cmd == 0x86) &&
+				    (msg->hdr.cmd.subcmd == 0)   ) {
+					/* Save flags in message */
+					card->need_b3ack = msg->msg.data_b3_req.flags;
+					msg->msg.data_b3_req.flags = 0;
+				}
+			}
+		}
+		spin_unlock_irqrestore(&card->lock, flags);
+		if (!(card->sbuf)) {
+			/* No more data to send */
+			test_and_clear_bit(ACT2000_LOCK_TX, (void *) &card->ilock);
+			return;
+		}
+		skb = card->sbuf;
+		l = 0;
+		while (skb->len) {
+			if (act2000_isa_writeb(card, *(skb->data))) {
+				/* Fifo is full, but more data to send */
+				test_and_clear_bit(ACT2000_LOCK_TX, (void *) &card->ilock);
+				/* Schedule myself */
+				act2000_schedule_tx(card);
+				return;
+			}
+			skb_pull(skb, 1);
+			l++;
+		}
+		msg = (actcapi_msg *)card->ack_msg;
+		if ((msg->hdr.cmd.cmd == 0x86) &&
+		    (msg->hdr.cmd.subcmd == 0)   ) {
+			/*
+			 * If it's user data, reset data-ptr
+			 * and put skb into ackq.
+			 */
+			skb->data = card->ack_msg;
+			/* Restore flags in message */
+			msg->msg.data_b3_req.flags = card->need_b3ack;
+			skb_queue_tail(&card->ackq, skb);
+		} else
+			dev_kfree_skb(skb);
+		card->sbuf = NULL;
+	}
+}
+
+/*
+ * Get firmware ID, check for 'ISDN' signature.
+ */
+static int
+act2000_isa_getid(act2000_card * card)
+{
+
+        act2000_fwid fid;
+        u_char *p = (u_char *) & fid;
+        int count = 0;
+
+        while (1) {
+                if (count > 510)
+                        return -EPROTO;
+                if (act2000_isa_readb(card, p++))
+                        break;
+                count++;
+        }
+        if (count <= 20) {
+                printk(KERN_WARNING "act2000: No Firmware-ID!\n");
+                return -ETIME;
+        }
+        *p = '\0';
+        fid.revlen[0] = '\0';
+        if (strcmp(fid.isdn, "ISDN")) {
+                printk(KERN_WARNING "act2000: Wrong Firmware-ID!\n");
+                return -EPROTO;
+        }
+	if ((p = strchr(fid.revision, '\n')))
+		*p = '\0';
+        printk(KERN_INFO "act2000: Firmware-ID: %s\n", fid.revision);
+	if (card->flags & ACT2000_FLAGS_IVALID) {
+		printk(KERN_DEBUG "Enabling Interrupts ...\n");
+		act2000_isa_enable_irq(card);
+	}
+        return 0;
+}
+
+/*
+ * Download microcode into card, check Firmware signature.
+ */
+int
+act2000_isa_download(act2000_card * card, act2000_ddef __user * cb)
+{
+        unsigned int length;
+        int l;
+        int c;
+        long timeout;
+        u_char *b;
+        u_char __user *p;
+        u_char *buf;
+        act2000_ddef cblock;
+
+        if (!act2000_isa_reset(card->port))
+                return -ENXIO;
+        msleep_interruptible(500);
+        if (copy_from_user(&cblock, cb, sizeof(cblock)))
+        	return -EFAULT;
+        length = cblock.length;
+        p = cblock.buffer;
+        if (!access_ok(VERIFY_READ, p, length))
+                return -EFAULT;
+        buf = (u_char *) kmalloc(1024, GFP_KERNEL);
+        if (!buf)
+                return -ENOMEM;
+        timeout = 0;
+        while (length) {
+                l = (length > 1024) ? 1024 : length;
+                c = 0;
+                b = buf;
+                if (copy_from_user(buf, p, l)) {
+                        kfree(buf);
+                        return -EFAULT;
+                }
+                while (c < l) {
+                        if (act2000_isa_writeb(card, *b++)) {
+                                printk(KERN_WARNING
+                                       "act2000: loader timed out"
+                                       " len=%d c=%d\n", length, c);
+                                kfree(buf);
+                                return -ETIME;
+                        }
+                        c++;
+                }
+                length -= l;
+                p += l;
+        }
+        kfree(buf);
+        msleep_interruptible(500);
+        return (act2000_isa_getid(card));
+}

drivers/isdn/act2000/act2000_isa.h

@@ -0,0 +1,136 @@
+/* $Id: act2000_isa.h,v 1.4.6.1 2001/09/23 22:24:32 kai Exp $
+ *
+ * ISDN lowlevel-module for the IBM ISDN-S0 Active 2000 (ISA-Version).
+ *
+ * Author       Fritz Elfert
+ * Copyright    by Fritz Elfert      <fritz@isdn4linux.de>
+ * 
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * Thanks to Friedemann Baitinger and IBM Germany
+ *
+ */
+
+#ifndef act2000_isa_h
+#define act2000_isa_h
+
+#define ISA_POLL_LOOP 40        /* Try to read-write before give up */
+
+typedef enum {
+        INT_NO_CHANGE = 0,      /* Do not change the Mask */
+        INT_ON = 1,             /* Set to Enable */
+        INT_OFF = 2,            /* Set to Disable */
+} ISA_INT_T;
+
+/**************************************************************************/
+/*      Configuration Register COR (RW)                                   */
+/**************************************************************************/
+/*    7    |   6    |    5   |   4    |    3   |    2   |    1   |    0   */
+/* Soft Res|  IRQM  |        IRQ Select        |   N/A  |  WAIT  |Proc err */
+/**************************************************************************/
+#define        ISA_COR             0	/* Offset for ISA config register */
+#define        ISA_COR_PERR     0x01	/* Processor Error Enabled        */
+#define        ISA_COR_WS       0x02	/* Insert Wait State if 1         */
+#define        ISA_COR_IRQOFF   0x38	/* No Interrupt                   */
+#define        ISA_COR_IRQ07    0x30	/* IRQ 7 Enable                   */
+#define        ISA_COR_IRQ05    0x28	/* IRQ 5 Enable                   */
+#define        ISA_COR_IRQ03    0x20	/* IRQ 3 Enable                   */
+#define        ISA_COR_IRQ10    0x18	/* IRQ 10 Enable                  */
+#define        ISA_COR_IRQ11    0x10	/* IRQ 11 Enable                  */
+#define        ISA_COR_IRQ12    0x08	/* IRQ 12 Enable                  */
+#define        ISA_COR_IRQ15    0x00	/* IRQ 15 Enable                  */
+#define        ISA_COR_IRQPULSE 0x40	/* 0 = Level 1 = Pulse Interrupt  */
+#define        ISA_COR_RESET    0x80	/* Soft Reset for Transputer      */
+
+/**************************************************************************/
+/*      Interrupt Source Register ISR (RO)                                */
+/**************************************************************************/
+/*    7    |   6    |    5   |   4    |    3   |    2   |    1   |    0   */
+/*   N/A   |  N/A   |   N/A  |Err sig |Ser ID  |IN Intr |Out Intr| Error  */
+/**************************************************************************/
+#define        ISA_ISR             1	/* Offset for Interrupt Register  */
+#define        ISA_ISR_ERR      0x01	/* Error Interrupt                */
+#define        ISA_ISR_OUT      0x02	/* Output Interrupt               */
+#define        ISA_ISR_INP      0x04	/* Input Interrupt                */
+#define        ISA_ISR_SERIAL   0x08	/* Read out Serial ID after Reset */
+#define        ISA_ISR_ERRSIG   0x10	/* Error Signal Input             */
+#define        ISA_ISR_ERR_MASK 0xfe    /* Mask Error Interrupt           */
+#define        ISA_ISR_OUT_MASK 0xfd    /* Mask Output Interrupt          */
+#define        ISA_ISR_INP_MASK 0xfb    /* Mask Input Interrupt           */
+
+/* Signature delivered after Reset at ISA_ISR_SERIAL (LSB first)          */
+#define        ISA_SER_ID     0x0201	/* ID for ISA Card                */
+
+/**************************************************************************/
+/*      EEPROM Register EPR (RW)                                          */
+/**************************************************************************/
+/*    7    |   6    |    5   |   4    |    3   |    2   |    1   |    0   */
+/*   N/A   |  N/A   |   N/A  |ROM Hold| ROM CS |ROM CLK | ROM IN |ROM Out */
+/**************************************************************************/
+#define        ISA_EPR             2	/* Offset for this Register       */
+#define        ISA_EPR_OUT      0x01	/* Rome Register Out (RO)         */
+#define        ISA_EPR_IN       0x02	/* Rom Register In (WR)           */
+#define        ISA_EPR_CLK      0x04	/* Rom Clock (WR)                 */
+#define        ISA_EPR_CS       0x08	/* Rom Cip Select (WR)            */
+#define        ISA_EPR_HOLD     0x10	/* Rom Hold Signal (WR)           */
+
+/**************************************************************************/
+/*      EEPROM enable Register EER (unused)                               */
+/**************************************************************************/
+#define        ISA_EER             3	/* Offset for this Register       */
+
+/**************************************************************************/
+/*      SLC Data Input SDI (RO)                                           */
+/**************************************************************************/
+#define        ISA_SDI             4	/* Offset for this Register       */
+
+/**************************************************************************/
+/*      SLC Data Output SDO (WO)                                          */
+/**************************************************************************/
+#define        ISA_SDO             5	/* Offset for this Register       */
+
+/**************************************************************************/
+/*      IMS C011 Mode 2 Input Status Register for INMOS CPU SIS (RW)      */
+/**************************************************************************/
+/*    7    |   6    |    5   |   4    |    3   |    2   |    1   |    0   */
+/*   N/A   |  N/A   |   N/A  |  N/A   |   N/A  |   N/A  |Int Ena |Data Pre */
+/**************************************************************************/
+#define        ISA_SIS             6	/* Offset for this Register       */
+#define        ISA_SIS_READY    0x01	/* If 1 : data is available       */
+#define        ISA_SIS_INT      0x02	/* Enable Interrupt for READ      */
+
+/**************************************************************************/
+/*      IMS C011 Mode 2 Output Status Register from INMOS CPU SOS (RW)    */
+/**************************************************************************/
+/*    7    |   6    |    5   |   4    |    3   |    2   |    1   |    0   */
+/*   N/A   |  N/A   |   N/A  |  N/A   |   N/A  |   N/A  |Int Ena |Out Rdy */
+/**************************************************************************/
+#define        ISA_SOS             7	/* Offset for this Register       */
+#define        ISA_SOS_READY    0x01	/* If 1 : we can write Data       */
+#define        ISA_SOS_INT      0x02	/* Enable Interrupt for WRITE     */
+
+#define        ISA_REGION          8	/* Number of Registers            */
+
+
+/* Macros for accessing ports */
+#define ISA_PORT_COR (card->port+ISA_COR)
+#define ISA_PORT_ISR (card->port+ISA_ISR)
+#define ISA_PORT_EPR (card->port+ISA_EPR)
+#define ISA_PORT_EER (card->port+ISA_EER)
+#define ISA_PORT_SDI (card->port+ISA_SDI)
+#define ISA_PORT_SDO (card->port+ISA_SDO)
+#define ISA_PORT_SIS (card->port+ISA_SIS)
+#define ISA_PORT_SOS (card->port+ISA_SOS)
+
+/* Prototypes */
+
+extern int act2000_isa_detect(unsigned short portbase);
+extern int act2000_isa_config_irq(act2000_card * card, short irq);
+extern int act2000_isa_config_port(act2000_card * card, unsigned short portbase);
+extern int act2000_isa_download(act2000_card * card, act2000_ddef __user * cb);
+extern void act2000_isa_release(act2000_card * card);
+extern void act2000_isa_receive(act2000_card *card);
+extern void act2000_isa_send(act2000_card *card);
+
+#endif                          /* act2000_isa_h */

drivers/isdn/act2000/capi.h

@@ -0,0 +1,366 @@
+/* $Id: capi.h,v 1.6.6.2 2001/09/23 22:24:32 kai Exp $
+ *
+ * ISDN lowlevel-module for the IBM ISDN-S0 Active 2000.
+ *
+ * Author       Fritz Elfert
+ * Copyright    by Fritz Elfert      <fritz@isdn4linux.de>
+ * 
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * Thanks to Friedemann Baitinger and IBM Germany
+ *
+ */
+
+#ifndef CAPI_H
+#define CAPI_H
+
+/* Command-part of a CAPI message */
+typedef struct actcapi_msgcmd {
+	__u8 cmd;
+	__u8 subcmd;
+} actcapi_msgcmd;
+
+/* CAPI message header */
+typedef struct actcapi_msghdr {
+	__u16 len;
+	__u16 applicationID;
+	actcapi_msgcmd cmd;
+	__u16 msgnum;
+} actcapi_msghdr;
+
+/* CAPI message description (for debugging) */
+typedef struct actcapi_msgdsc {
+	actcapi_msgcmd cmd;
+	char *description;
+} actcapi_msgdsc;
+
+/* CAPI Address */
+typedef struct actcapi_addr {
+	__u8 len;                            /* Length of element            */
+	__u8 tnp;                            /* Type/Numbering Plan          */
+	__u8 num[20];                        /* Caller ID                    */
+} actcapi_addr;
+
+/* CAPI INFO element mask */
+typedef  union actcapi_infonr {              /* info number                  */
+	__u16 mask;                          /* info-mask field              */
+	struct bmask {                       /* bit definitions              */
+		unsigned  codes : 3;         /* code set                     */
+		unsigned  rsvd  : 5;         /* reserved                     */
+		unsigned  svind : 1;         /* single, variable length ind. */
+		unsigned  wtype : 7;         /* W-element type               */
+	} bmask;
+} actcapi_infonr;
+
+/* CAPI INFO element */
+typedef union  actcapi_infoel {              /* info element                 */
+	__u8 len;                            /* length of info element       */
+	__u8 display[40];                    /* display contents             */
+	__u8 uuinfo[40];                     /* User-user info field         */
+	struct cause {                       /* Cause information            */
+		unsigned ext2  : 1;          /* extension                    */
+		unsigned cod   : 2;          /* coding standard              */
+		unsigned spare : 1;          /* spare                        */
+		unsigned loc   : 4;          /* location                     */
+		unsigned ext1  : 1;          /* extension                    */
+		unsigned cval  : 7;          /* Cause value                  */
+	} cause;                     
+	struct charge {                      /* Charging information         */
+		__u8 toc;                    /* type of charging info        */
+		__u8 unit[10];               /* charging units               */
+	} charge;
+	__u8 date[20];                       /* date fields                  */
+	__u8 stat;                           /* state of remote party        */
+} actcapi_infoel;
+
+/* Message for EAZ<->MSN Mapping */
+typedef struct actcapi_msn {
+	__u8 eaz;
+	__u8 len;                            /* Length of MSN                */
+	__u8 msn[15] __attribute__ ((packed));
+} actcapi_msn;
+
+typedef struct actcapi_dlpd {
+	__u8 len;                            /* Length of structure          */
+	__u16 dlen __attribute__ ((packed)); /* Data Length                  */
+	__u8 laa __attribute__ ((packed));   /* Link Address A               */
+	__u8 lab;                            /* Link Address B               */
+	__u8 modulo;                         /* Modulo Mode                  */
+	__u8 win;                            /* Window size                  */
+	__u8 xid[100];                       /* XID Information              */
+} actcapi_dlpd;
+
+typedef struct actcapi_ncpd {
+	__u8   len;                          /* Length of structure          */
+	__u16  lic __attribute__ ((packed));
+	__u16  hic __attribute__ ((packed));
+	__u16  ltc __attribute__ ((packed));
+	__u16  htc __attribute__ ((packed));
+	__u16  loc __attribute__ ((packed));
+	__u16  hoc __attribute__ ((packed));
+	__u8   modulo __attribute__ ((packed));
+} actcapi_ncpd;
+#define actcapi_ncpi actcapi_ncpd
+
+/*
+ * Layout of NCCI field in a B3 DATA CAPI message is different from
+ * standard at act2000:
+ *
+ * Bit 0-4  = PLCI
+ * Bit 5-7  = Controller
+ * Bit 8-15 = NCCI
+ */
+#define MAKE_NCCI(plci,contr,ncci) \
+        ((plci & 0x1f) | ((contr & 0x7) << 5) | ((ncci & 0xff) << 8))
+
+#define EVAL_NCCI(fakencci,plci,contr,ncci) { \
+	plci  = fakencci & 0x1f; \
+	contr = (fakencci >> 5) & 0x7; \
+	ncci  = (fakencci >> 8) & 0xff; \
+}
+
+/*
+ * Layout of PLCI field in a B3 DATA CAPI message is different from
+ * standard at act2000:
+ *
+ * Bit 0-4  = PLCI
+ * Bit 5-7  = Controller
+ * Bit 8-15 = reserved (must be 0)
+ */
+#define MAKE_PLCI(plci,contr) \
+        ((plci & 0x1f) | ((contr & 0x7) << 5))
+
+#define EVAL_PLCI(fakeplci,plci,contr) { \
+	plci  = fakeplci & 0x1f; \
+	contr = (fakeplci >> 5) & 0x7; \
+}
+
+typedef struct actcapi_msg {
+	actcapi_msghdr hdr;
+	union {
+		__u16 manuf_msg;
+		struct manufacturer_req_net {
+			__u16 manuf_msg;
+			__u16 controller;
+			__u8  nettype;
+		} manufacturer_req_net;
+		struct manufacturer_req_v42 {
+			__u16 manuf_msg;
+			__u16 controller;
+			__u32 v42control;
+		} manufacturer_req_v42;
+		struct manufacturer_conf_v42 {
+			__u16 manuf_msg;
+			__u16 controller;
+		} manufacturer_conf_v42;
+		struct manufacturer_req_err {
+			__u16 manuf_msg;
+			__u16 controller;
+		} manufacturer_req_err;
+		struct manufacturer_ind_err {
+			__u16 manuf_msg;
+			__u16 controller;
+			__u32 errcode;
+			__u8  errstring; /* actually up to 160 */
+		} manufacturer_ind_err;
+		struct manufacturer_req_msn {
+			__u16 manuf_msg;
+			__u16 controller;
+			actcapi_msn msnmap;
+		} manufacturer_req_msn;
+		/* TODO: TraceInit-req/conf/ind/resp and
+		 *       TraceDump-req/conf/ind/resp
+		 */
+		struct connect_req {
+			__u8  controller;
+			__u8  bchan;
+			__u32 infomask __attribute__ ((packed));
+			__u8  si1;
+			__u8  si2;
+			__u8  eaz;
+			actcapi_addr addr;
+		} connect_req;
+		struct connect_conf {
+			__u16 plci;
+			__u16 info;
+		} connect_conf;
+		struct connect_ind {
+			__u16 plci;
+			__u8  controller;
+			__u8  si1;
+			__u8  si2;
+			__u8  eaz;
+			actcapi_addr addr;
+		} connect_ind;
+		struct connect_resp {
+			__u16 plci;
+			__u8  rejectcause;
+		} connect_resp;
+		struct connect_active_ind {
+			__u16 plci;
+			actcapi_addr addr;
+		} connect_active_ind;
+		struct connect_active_resp {
+			__u16 plci;
+		} connect_active_resp;
+		struct connect_b3_req {
+			__u16 plci;
+			actcapi_ncpi ncpi;
+		} connect_b3_req;
+		struct connect_b3_conf {
+			__u16 plci;
+			__u16 ncci;
+			__u16 info;
+		} connect_b3_conf;
+		struct connect_b3_ind {
+			__u16 ncci;
+			__u16 plci;
+			actcapi_ncpi ncpi;
+		} connect_b3_ind;
+		struct connect_b3_resp {
+			__u16 ncci;
+			__u8  rejectcause;
+			actcapi_ncpi ncpi __attribute__ ((packed));
+		} connect_b3_resp;
+		struct disconnect_req {
+			__u16 plci;
+			__u8  cause;
+		} disconnect_req;
+		struct disconnect_conf {
+			__u16 plci;
+			__u16 info;
+		} disconnect_conf;
+		struct disconnect_ind {
+			__u16 plci;
+			__u16 info;
+		} disconnect_ind;
+		struct disconnect_resp {
+			__u16 plci;
+		} disconnect_resp;
+		struct connect_b3_active_ind {
+			__u16 ncci;
+			actcapi_ncpi ncpi;
+		} connect_b3_active_ind;
+		struct connect_b3_active_resp {
+			__u16 ncci;
+		} connect_b3_active_resp;
+		struct disconnect_b3_req {
+			__u16 ncci;
+			actcapi_ncpi ncpi;
+		} disconnect_b3_req;
+		struct disconnect_b3_conf {
+			__u16 ncci;
+			__u16 info;
+		} disconnect_b3_conf;
+		struct disconnect_b3_ind {
+			__u16 ncci;
+			__u16 info;
+			actcapi_ncpi ncpi;
+		} disconnect_b3_ind;
+		struct disconnect_b3_resp {
+			__u16 ncci;
+		} disconnect_b3_resp;
+		struct info_ind {
+			__u16 plci;
+			actcapi_infonr nr;
+			actcapi_infoel el;
+		} info_ind;
+		struct info_resp {
+			__u16 plci;
+		} info_resp;
+		struct listen_b3_req {
+			__u16 plci;
+		} listen_b3_req;
+		struct listen_b3_conf {
+			__u16 plci;
+			__u16 info;
+		} listen_b3_conf;
+		struct select_b2_protocol_req {
+			__u16 plci;
+			__u8  protocol;
+			actcapi_dlpd dlpd __attribute__ ((packed));
+		} select_b2_protocol_req;
+		struct select_b2_protocol_conf {
+			__u16 plci;
+			__u16 info;
+		} select_b2_protocol_conf;
+		struct select_b3_protocol_req {
+			__u16 plci;
+			__u8  protocol;
+			actcapi_ncpd ncpd __attribute__ ((packed));
+		} select_b3_protocol_req;
+		struct select_b3_protocol_conf {
+			__u16 plci;
+			__u16 info;
+		} select_b3_protocol_conf;
+		struct listen_req {
+			__u8  controller;
+			__u32 infomask __attribute__ ((packed));  
+			__u16 eazmask __attribute__ ((packed));
+			__u16 simask __attribute__ ((packed));
+		} listen_req;
+		struct listen_conf {
+			__u8  controller;
+			__u16 info __attribute__ ((packed));
+		} listen_conf;
+		struct data_b3_req {
+			__u16 fakencci;
+			__u16 datalen;
+			__u32 unused;
+			__u8  blocknr;
+			__u16 flags __attribute__ ((packed));
+		} data_b3_req;
+		struct data_b3_ind {
+			__u16 fakencci;
+			__u16 datalen;
+			__u32 unused;
+			__u8  blocknr;
+			__u16 flags __attribute__ ((packed));
+		} data_b3_ind;
+		struct data_b3_resp {
+			__u16 ncci;
+			__u8  blocknr;
+		} data_b3_resp;
+		struct data_b3_conf {
+			__u16 ncci;
+			__u8  blocknr;
+			__u16 info __attribute__ ((packed));
+		} data_b3_conf;
+	} msg;
+} actcapi_msg;
+
+extern __inline__ unsigned short
+actcapi_nextsmsg(act2000_card *card)
+{
+	unsigned long flags;
+	unsigned short n;
+
+	spin_lock_irqsave(&card->mnlock, flags);
+	n = card->msgnum;
+	card->msgnum++;
+	card->msgnum &= 0x7fff;
+	spin_unlock_irqrestore(&card->mnlock, flags);
+	return n;
+}
+#define DEBUG_MSG
+#undef DEBUG_DATA_MSG
+#undef DEBUG_DUMP_SKB
+
+extern int actcapi_chkhdr(act2000_card *, actcapi_msghdr *);
+extern int actcapi_listen_req(act2000_card *);
+extern int actcapi_manufacturer_req_net(act2000_card *);
+extern int actcapi_manufacturer_req_v42(act2000_card *, ulong);
+extern int actcapi_manufacturer_req_errh(act2000_card *);
+extern int actcapi_manufacturer_req_msn(act2000_card *);
+extern int actcapi_connect_req(act2000_card *, act2000_chan *, char *, char, int, int);
+extern void actcapi_select_b2_protocol_req(act2000_card *, act2000_chan *);
+extern void actcapi_disconnect_b3_req(act2000_card *, act2000_chan *);
+extern void actcapi_connect_resp(act2000_card *, act2000_chan *, __u8);
+extern void actcapi_dispatch(act2000_card *);
+#ifdef DEBUG_MSG
+extern void actcapi_debug_msg(struct sk_buff *skb, int);
+#else
+#define actcapi_debug_msg(skb, len)
+#endif
+#endif

drivers/isdn/capi/Kconfig

@@ -0,0 +1,53 @@
+#
+# Config.in for the CAPI subsystem
+#
+config ISDN_DRV_AVMB1_VERBOSE_REASON
+	bool "Verbose reason code reporting (kernel size +=7K)"
+	depends on ISDN_CAPI
+	help
+	  If you say Y here, the AVM B1 driver will give verbose reasons for
+	  disconnecting. This will increase the size of the kernel by 7 KB. If
+	  unsure, say Y.
+
+config ISDN_CAPI_MIDDLEWARE
+	bool "CAPI2.0 Middleware support (EXPERIMENTAL)"
+	depends on ISDN_CAPI && EXPERIMENTAL
+	help
+	  This option will enhance the capabilities of the /dev/capi20
+	  interface.  It will provide a means of moving a data connection,
+	  established via the usual /dev/capi20 interface to a special tty
+	  device.  If you want to use pppd with pppdcapiplugin to dial up to
+	  your ISP, say Y here.
+
+config ISDN_CAPI_CAPI20
+	tristate "CAPI2.0 /dev/capi support"
+	depends on ISDN_CAPI
+	help
+	  This option will provide the CAPI 2.0 interface to userspace
+	  applications via /dev/capi20. Applications should use the
+	  standardized libcapi20 to access this functionality.  You should say
+	  Y/M here.
+
+config ISDN_CAPI_CAPIFS_BOOL
+	bool "CAPI2.0 filesystem support"
+	depends on ISDN_CAPI_MIDDLEWARE && ISDN_CAPI_CAPI20
+
+config ISDN_CAPI_CAPIFS
+	tristate
+	depends on ISDN_CAPI_CAPIFS_BOOL
+	default ISDN_CAPI_CAPI20
+	help
+	  This option provides a special file system, similar to /dev/pts with
+	  device nodes for the special ttys established by using the
+	  middleware extension above. If you want to use pppd with
+	  pppdcapiplugin to dial up to your ISP, say Y here.
+
+config ISDN_CAPI_CAPIDRV
+	tristate "CAPI2.0 capidrv interface support"
+	depends on ISDN_CAPI && ISDN_I4L
+	help
+	  This option provides the glue code to hook up CAPI driven cards to
+	  the legacy isdn4linux link layer.  If you have a card which is
+	  supported by a CAPI driver, but still want to use old features like
+	  ippp interfaces or ttyI emulation, say Y/M here.
+

drivers/isdn/capi/Makefile

@@ -0,0 +1,15 @@
+# Makefile for the CAPI subsystem.
+
+# Ordering constraints: kernelcapi.o first
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_ISDN_CAPI)			+= kernelcapi.o
+obj-$(CONFIG_ISDN_CAPI_CAPI20)		+= capi.o 
+obj-$(CONFIG_ISDN_CAPI_CAPIDRV)		+= capidrv.o
+obj-$(CONFIG_ISDN_CAPI_CAPIFS)		+= capifs.o
+
+# Multipart objects.
+
+kernelcapi-y				:= kcapi.o capiutil.o capilib.o
+kernelcapi-$(CONFIG_PROC_FS)		+= kcapi_proc.o

drivers/isdn/capi/capidrv.h

@@ -0,0 +1,140 @@
+/* $Id: capidrv.h,v 1.2.8.2 2001/09/23 22:24:33 kai Exp $
+ *
+ * ISDN4Linux Driver, using capi20 interface (kernelcapi)
+ *
+ * Copyright 1997 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.
+ *
+ */
+
+#ifndef __CAPIDRV_H__
+#define __CAPIDRV_H__
+
+/*
+ * LISTEN state machine
+ */
+#define ST_LISTEN_NONE			0	/* L-0 */
+#define ST_LISTEN_WAIT_CONF		1	/* L-0.1 */
+#define ST_LISTEN_ACTIVE		2	/* L-1 */
+#define ST_LISTEN_ACTIVE_WAIT_CONF	3	/* L-1.1 */
+
+
+#define EV_LISTEN_REQ			1	/* L-0 -> L-0.1
+						   L-1 -> L-1.1 */
+#define EV_LISTEN_CONF_ERROR		2	/* L-0.1 -> L-0
+						   L-1.1 -> L-1 */
+#define EV_LISTEN_CONF_EMPTY		3	/* L-0.1 -> L-0
+						   L-1.1 -> L-0 */
+#define EV_LISTEN_CONF_OK		4	/* L-0.1 -> L-1
+						   L-1.1 -> L.1 */
+
+/*
+ * per plci state machine
+ */
+#define ST_PLCI_NONE			0	/* P-0 */
+#define ST_PLCI_OUTGOING 		1	/* P-0.1 */
+#define ST_PLCI_ALLOCATED		2	/* P-1 */
+#define ST_PLCI_ACTIVE			3	/* P-ACT */
+#define ST_PLCI_INCOMING		4	/* P-2 */
+#define ST_PLCI_FACILITY_IND		5	/* P-3 */
+#define ST_PLCI_ACCEPTING		6	/* P-4 */
+#define ST_PLCI_DISCONNECTING		7	/* P-5 */
+#define ST_PLCI_DISCONNECTED		8	/* P-6 */
+#define ST_PLCI_RESUMEING		9	/* P-0.Res */
+#define ST_PLCI_RESUME			10	/* P-Res */
+#define ST_PLCI_HELD			11	/* P-HELD */
+
+#define EV_PLCI_CONNECT_REQ		1	/* P-0 -> P-0.1
+                                                 */
+#define EV_PLCI_CONNECT_CONF_ERROR	2	/* P-0.1 -> P-0
+                                                 */
+#define EV_PLCI_CONNECT_CONF_OK		3	/* P-0.1 -> P-1
+                                                 */
+#define EV_PLCI_FACILITY_IND_UP		4	/* P-0 -> P-1
+                                                 */
+#define EV_PLCI_CONNECT_IND		5	/* P-0 -> P-2
+                                                 */
+#define EV_PLCI_CONNECT_ACTIVE_IND	6	/* P-1 -> P-ACT
+                                                 */
+#define EV_PLCI_CONNECT_REJECT		7	/* P-2 -> P-5
+						   P-3 -> P-5
+						 */
+#define EV_PLCI_DISCONNECT_REQ		8	/* P-1 -> P-5
+						   P-2 -> P-5
+						   P-3 -> P-5
+						   P-4 -> P-5
+						   P-ACT -> P-5
+						   P-Res -> P-5 (*)
+						   P-HELD -> P-5 (*)
+						   */
+#define EV_PLCI_DISCONNECT_IND		9	/* P-1 -> P-6
+						   P-2 -> P-6
+						   P-3 -> P-6
+						   P-4 -> P-6
+						   P-5 -> P-6
+						   P-ACT -> P-6
+						   P-Res -> P-6 (*)
+						   P-HELD -> P-6 (*)
+						   */
+#define EV_PLCI_FACILITY_IND_DOWN	10	/* P-0.1 -> P-5
+						   P-1 -> P-5
+						   P-ACT -> P-5
+						   P-2 -> P-5
+						   P-3 -> P-5
+						   P-4 -> P-5
+						   */
+#define EV_PLCI_DISCONNECT_RESP		11	/* P-6 -> P-0
+                                                   */
+#define EV_PLCI_CONNECT_RESP		12	/* P-6 -> P-0
+                                                   */
+
+#define EV_PLCI_RESUME_REQ		13	/* P-0 -> P-0.Res
+                                                 */
+#define EV_PLCI_RESUME_CONF_OK		14	/* P-0.Res -> P-Res
+                                                 */
+#define EV_PLCI_RESUME_CONF_ERROR	15	/* P-0.Res -> P-0
+                                                 */
+#define EV_PLCI_RESUME_IND		16	/* P-Res -> P-ACT
+                                                 */
+#define EV_PLCI_HOLD_IND		17	/* P-ACT -> P-HELD
+                                                 */
+#define EV_PLCI_RETRIEVE_IND		18	/* P-HELD -> P-ACT
+                                                 */
+#define EV_PLCI_SUSPEND_IND		19	/* P-ACT -> P-5
+                                                 */
+#define EV_PLCI_CD_IND			20	/* P-2 -> P-5
+                                                 */
+
+/*
+ * per ncci state machine
+ */
+#define ST_NCCI_PREVIOUS			-1
+#define ST_NCCI_NONE				0	/* N-0 */
+#define ST_NCCI_OUTGOING			1	/* N-0.1 */
+#define ST_NCCI_INCOMING			2	/* N-1 */
+#define ST_NCCI_ALLOCATED			3	/* N-2 */
+#define ST_NCCI_ACTIVE				4	/* N-ACT */
+#define ST_NCCI_RESETING			5	/* N-3 */
+#define ST_NCCI_DISCONNECTING			6	/* N-4 */
+#define ST_NCCI_DISCONNECTED			7	/* N-5 */
+
+#define EV_NCCI_CONNECT_B3_REQ			1	/* N-0 -> N-0.1 */
+#define EV_NCCI_CONNECT_B3_IND			2	/* N-0 -> N.1 */
+#define EV_NCCI_CONNECT_B3_CONF_OK		3	/* N-0.1 -> N.2 */
+#define EV_NCCI_CONNECT_B3_CONF_ERROR		4	/* N-0.1 -> N.0 */
+#define EV_NCCI_CONNECT_B3_REJECT		5	/* N-1 -> N-4 */
+#define EV_NCCI_CONNECT_B3_RESP			6	/* N-1 -> N-2 */
+#define EV_NCCI_CONNECT_B3_ACTIVE_IND		7	/* N-2 -> N-ACT */
+#define EV_NCCI_RESET_B3_REQ			8	/* N-ACT -> N-3 */
+#define EV_NCCI_RESET_B3_IND			9	/* N-3 -> N-ACT */
+#define EV_NCCI_DISCONNECT_B3_IND		10	/* N-4 -> N.5 */
+#define EV_NCCI_DISCONNECT_B3_CONF_ERROR	11	/* N-4 -> previous */
+#define EV_NCCI_DISCONNECT_B3_REQ		12	/* N-1 -> N-4
+							   N-2 -> N-4
+							   N-3 -> N-4
+							   N-ACT -> N-4 */
+#define EV_NCCI_DISCONNECT_B3_RESP		13	/* N-5 -> N-0 */
+
+#endif				/* __CAPIDRV_H__ */

drivers/isdn/capi/capifs.c

@@ -0,0 +1,212 @@
+/* $Id: capifs.c,v 1.1.2.3 2004/01/16 21:09:26 keil Exp $
+ * 
+ * Copyright 2000 by Carsten Paeth <calle@calle.de>
+ *
+ * Heavily based on devpts filesystem from H. Peter Anvin
+ * 
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/fs.h>
+#include <linux/mount.h>
+#include <linux/namei.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/ctype.h>
+
+MODULE_DESCRIPTION("CAPI4Linux: /dev/capi/ filesystem");
+MODULE_AUTHOR("Carsten Paeth");
+MODULE_LICENSE("GPL");
+
+/* ------------------------------------------------------------------ */
+
+static char *revision = "$Revision: 1.1.2.3 $";
+
+/* ------------------------------------------------------------------ */
+
+#define CAPIFS_SUPER_MAGIC (('C'<<8)|'N')
+
+static struct vfsmount *capifs_mnt;
+static struct dentry *capifs_root;
+
+static struct {
+	int setuid;
+	int setgid;
+	uid_t   uid;
+	gid_t   gid;
+	umode_t mode;
+} config = {.mode = 0600};
+
+/* ------------------------------------------------------------------ */
+
+static int capifs_remount(struct super_block *s, int *flags, char *data)
+{
+	int setuid = 0;
+	int setgid = 0;
+	uid_t uid = 0;
+	gid_t gid = 0;
+	umode_t mode = 0600;
+	char *this_char;
+
+	this_char = NULL;
+	while ((this_char = strsep(&data, ",")) != NULL) {
+		int n;
+		char dummy;
+		if (!*this_char)
+			continue;
+		if (sscanf(this_char, "uid=%i%c", &n, &dummy) == 1) {
+			setuid = 1;
+			uid = n;
+		} else if (sscanf(this_char, "gid=%i%c", &n, &dummy) == 1) {
+			setgid = 1;
+			gid = n;
+		} else if (sscanf(this_char, "mode=%o%c", &n, &dummy) == 1)
+			mode = n & ~S_IFMT;
+		else {
+			printk("capifs: called with bogus options\n");
+			return -EINVAL;
+		}
+	}
+	config.setuid  = setuid;
+	config.setgid  = setgid;
+	config.uid     = uid;
+	config.gid     = gid;
+	config.mode    = mode;
+	return 0;
+}
+
+static struct super_operations capifs_sops =
+{
+	.statfs		= simple_statfs,
+	.remount_fs	= capifs_remount,
+};
+
+
+static int
+capifs_fill_super(struct super_block *s, void *data, int silent)
+{
+	struct inode * inode;
+
+	s->s_blocksize = 1024;
+	s->s_blocksize_bits = 10;
+	s->s_magic = CAPIFS_SUPER_MAGIC;
+	s->s_op = &capifs_sops;
+	s->s_time_gran = 1;
+
+	inode = new_inode(s);
+	if (!inode)
+		goto fail;
+	inode->i_ino = 1;
+	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+	inode->i_blocks = 0;
+	inode->i_blksize = 1024;
+	inode->i_uid = inode->i_gid = 0;
+	inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
+	inode->i_op = &simple_dir_inode_operations;
+	inode->i_fop = &simple_dir_operations;
+	inode->i_nlink = 2;
+
+	capifs_root = s->s_root = d_alloc_root(inode);
+	if (s->s_root)
+		return 0;
+	
+	printk("capifs: get root dentry failed\n");
+	iput(inode);
+fail:
+	return -ENOMEM;
+}
+
+static struct super_block *capifs_get_sb(struct file_system_type *fs_type,
+	int flags, const char *dev_name, void *data)
+{
+	return get_sb_single(fs_type, flags, data, capifs_fill_super);
+}
+
+static struct file_system_type capifs_fs_type = {
+	.owner		= THIS_MODULE,
+	.name		= "capifs",
+	.get_sb		= capifs_get_sb,
+	.kill_sb	= kill_anon_super,
+};
+
+static struct dentry *get_node(int num)
+{
+	char s[10];
+	struct dentry *root = capifs_root;
+	down(&root->d_inode->i_sem);
+	return lookup_one_len(s, root, sprintf(s, "%d", num));
+}
+
+void capifs_new_ncci(unsigned int number, dev_t device)
+{
+	struct dentry *dentry;
+	struct inode *inode = new_inode(capifs_mnt->mnt_sb);
+	if (!inode)
+		return;
+	inode->i_ino = number+2;
+	inode->i_blksize = 1024;
+	inode->i_uid = config.setuid ? config.uid : current->fsuid;
+	inode->i_gid = config.setgid ? config.gid : current->fsgid;
+	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+	init_special_inode(inode, S_IFCHR|config.mode, device);
+	//inode->i_op = &capifs_file_inode_operations;
+
+	dentry = get_node(number);
+	if (!IS_ERR(dentry) && !dentry->d_inode)
+		d_instantiate(dentry, inode);
+	up(&capifs_root->d_inode->i_sem);
+}
+
+void capifs_free_ncci(unsigned int number)
+{
+	struct dentry *dentry = get_node(number);
+
+	if (!IS_ERR(dentry)) {
+		struct inode *inode = dentry->d_inode;
+		if (inode) {
+			inode->i_nlink--;
+			d_delete(dentry);
+			dput(dentry);
+		}
+		dput(dentry);
+	}
+	up(&capifs_root->d_inode->i_sem);
+}
+
+static int __init capifs_init(void)
+{
+	char rev[32];
+	char *p;
+	int err;
+
+	if ((p = strchr(revision, ':')) != 0 && p[1]) {
+		strlcpy(rev, p + 2, sizeof(rev));
+		if ((p = strchr(rev, '$')) != 0 && p > rev)
+		   *(p-1) = 0;
+	} else
+		strcpy(rev, "1.0");
+
+	err = register_filesystem(&capifs_fs_type);
+	if (!err) {
+		capifs_mnt = kern_mount(&capifs_fs_type);
+		if (IS_ERR(capifs_mnt))
+			err = PTR_ERR(capifs_mnt);
+	}
+	if (!err)
+		printk(KERN_NOTICE "capifs: Rev %s\n", rev);
+	return err;
+}
+
+static void __exit capifs_exit(void)
+{
+	unregister_filesystem(&capifs_fs_type);
+	mntput(capifs_mnt);
+}
+
+EXPORT_SYMBOL(capifs_new_ncci);
+EXPORT_SYMBOL(capifs_free_ncci);
+
+module_init(capifs_init);
+module_exit(capifs_exit);

drivers/isdn/capi/capifs.h

@@ -0,0 +1,11 @@
+/* $Id: capifs.h,v 1.1.2.2 2004/01/16 21:09:26 keil Exp $
+ * 
+ * Copyright 2000 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.
+ *
+ */
+
+void capifs_new_ncci(unsigned int num, dev_t device);
+void capifs_free_ncci(unsigned int num);

drivers/isdn/capi/capilib.c

@@ -0,0 +1,200 @@
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/isdn/capilli.h>
+
+#define DBG(format, arg...) do { \
+printk(KERN_DEBUG "%s: " format "\n" , __FUNCTION__ , ## arg); \
+} while (0)
+
+struct capilib_msgidqueue {
+	struct capilib_msgidqueue *next;
+	u16 msgid;
+};
+
+struct capilib_ncci {
+	struct list_head list;
+	u16 applid;
+	u32 ncci;
+	u32 winsize;
+	int   nmsg;
+	struct capilib_msgidqueue *msgidqueue;
+	struct capilib_msgidqueue *msgidlast;
+	struct capilib_msgidqueue *msgidfree;
+	struct capilib_msgidqueue msgidpool[CAPI_MAXDATAWINDOW];
+};
+
+// ---------------------------------------------------------------------------
+// NCCI Handling
+
+static inline void mq_init(struct capilib_ncci * np)
+{
+	u_int i;
+	np->msgidqueue = NULL;
+	np->msgidlast = NULL;
+	np->nmsg = 0;
+	memset(np->msgidpool, 0, sizeof(np->msgidpool));
+	np->msgidfree = &np->msgidpool[0];
+	for (i = 1; i < np->winsize; i++) {
+		np->msgidpool[i].next = np->msgidfree;
+		np->msgidfree = &np->msgidpool[i];
+	}
+}
+
+static inline int mq_enqueue(struct capilib_ncci * np, u16 msgid)
+{
+	struct capilib_msgidqueue *mq;
+	if ((mq = np->msgidfree) == 0)
+		return 0;
+	np->msgidfree = mq->next;
+	mq->msgid = msgid;
+	mq->next = NULL;
+	if (np->msgidlast)
+		np->msgidlast->next = mq;
+	np->msgidlast = mq;
+	if (!np->msgidqueue)
+		np->msgidqueue = mq;
+	np->nmsg++;
+	return 1;
+}
+
+static inline int mq_dequeue(struct capilib_ncci * np, u16 msgid)
+{
+	struct capilib_msgidqueue **pp;
+	for (pp = &np->msgidqueue; *pp; pp = &(*pp)->next) {
+		if ((*pp)->msgid == msgid) {
+			struct capilib_msgidqueue *mq = *pp;
+			*pp = mq->next;
+			if (mq == np->msgidlast)
+				np->msgidlast = NULL;
+			mq->next = np->msgidfree;
+			np->msgidfree = mq;
+			np->nmsg--;
+			return 1;
+		}
+	}
+	return 0;
+}
+
+void capilib_new_ncci(struct list_head *head, u16 applid, u32 ncci, u32 winsize)
+{
+	struct capilib_ncci *np;
+
+	np = kmalloc(sizeof(*np), GFP_ATOMIC);
+	if (!np) {
+		printk(KERN_WARNING "capilib_new_ncci: no memory.\n");
+		return;
+	}
+	if (winsize > CAPI_MAXDATAWINDOW) {
+		printk(KERN_ERR "capi_new_ncci: winsize %d too big\n",
+		       winsize);
+		winsize = CAPI_MAXDATAWINDOW;
+	}
+	np->applid = applid;
+	np->ncci = ncci;
+	np->winsize = winsize;
+	mq_init(np);
+	list_add_tail(&np->list, head);
+	DBG("kcapi: appl %d ncci 0x%x up", applid, ncci);
+}
+
+EXPORT_SYMBOL(capilib_new_ncci);
+
+void capilib_free_ncci(struct list_head *head, u16 applid, u32 ncci)
+{
+	struct list_head *l;
+	struct capilib_ncci *np;
+
+	list_for_each(l, head) {
+		np = list_entry(l, struct capilib_ncci, list);
+		if (np->applid != applid)
+			continue;
+		if (np->ncci != ncci)
+			continue;
+		printk(KERN_INFO "kcapi: appl %d ncci 0x%x down\n", applid, ncci);
+		list_del(&np->list);
+		kfree(np);
+		return;
+	}
+	printk(KERN_ERR "capilib_free_ncci: ncci 0x%x not found\n", ncci);
+}
+
+EXPORT_SYMBOL(capilib_free_ncci);
+
+void capilib_release_appl(struct list_head *head, u16 applid)
+{
+	struct list_head *l, *n;
+	struct capilib_ncci *np;
+
+	list_for_each_safe(l, n, head) {
+		np = list_entry(l, struct capilib_ncci, list);
+		if (np->applid != applid)
+			continue;
+		printk(KERN_INFO "kcapi: appl %d ncci 0x%x forced down\n", applid, np->ncci);
+		list_del(&np->list);
+		kfree(np);
+	}
+}
+
+EXPORT_SYMBOL(capilib_release_appl);
+
+void capilib_release(struct list_head *head)
+{
+	struct list_head *l, *n;
+	struct capilib_ncci *np;
+
+	list_for_each_safe(l, n, head) {
+		np = list_entry(l, struct capilib_ncci, list);
+		printk(KERN_INFO "kcapi: appl %d ncci 0x%x forced down\n", np->applid, np->ncci);
+		list_del(&np->list);
+		kfree(np);
+	}
+}
+
+EXPORT_SYMBOL(capilib_release);
+
+u16 capilib_data_b3_req(struct list_head *head, u16 applid, u32 ncci, u16 msgid)
+{
+	struct list_head *l;
+	struct capilib_ncci *np;
+
+	list_for_each(l, head) {
+		np = list_entry(l, struct capilib_ncci, list);
+		if (np->applid != applid)
+			continue;
+		if (np->ncci != ncci)
+			continue;
+		
+		if (mq_enqueue(np, msgid) == 0)
+			return CAPI_SENDQUEUEFULL;
+
+		return CAPI_NOERROR;
+	}
+	printk(KERN_ERR "capilib_data_b3_req: ncci 0x%x not found\n", ncci);
+	return CAPI_NOERROR;
+}
+
+EXPORT_SYMBOL(capilib_data_b3_req);
+
+void capilib_data_b3_conf(struct list_head *head, u16 applid, u32 ncci, u16 msgid)
+{
+	struct list_head *l;
+	struct capilib_ncci *np;
+
+	list_for_each(l, head) {
+		np = list_entry(l, struct capilib_ncci, list);
+		if (np->applid != applid)
+			continue;
+		if (np->ncci != ncci)
+			continue;
+		
+		if (mq_dequeue(np, msgid) == 0) {
+			printk(KERN_ERR "kcapi: msgid %hu ncci 0x%x not on queue\n",
+			       msgid, ncci);
+		}
+		return;
+	}
+	printk(KERN_ERR "capilib_data_b3_conf: ncci 0x%x not found\n", ncci);
+}
+
+EXPORT_SYMBOL(capilib_data_b3_conf);