Initial import

1 files changed, 253 insertions, 0 deletions

diff --git a/drivers/isdn/icn/icn.h b/drivers/isdn/icn/icn.h
new file mode 100644
index 000000000..b71346699
--- /dev/null
+++ b/drivers/isdn/icn/icn.h
@@ -0,0 +1,253 @@
+/* $Id: icn.h,v 1.30.6.5 2001/09/23 22:24:55 kai Exp $
+ *
+ * ISDN lowlevel-module for the ICN active ISDN-Card.
+ *
+ * Copyright 1994 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.
+ *
+ */
+
+#ifndef icn_h
+#define icn_h
+
+#define ICN_IOCTL_SETMMIO   0
+#define ICN_IOCTL_GETMMIO   1
+#define ICN_IOCTL_SETPORT   2
+#define ICN_IOCTL_GETPORT   3
+#define ICN_IOCTL_LOADBOOT  4
+#define ICN_IOCTL_LOADPROTO 5
+#define ICN_IOCTL_LEASEDCFG 6
+#define ICN_IOCTL_GETDOUBLE 7
+#define ICN_IOCTL_DEBUGVAR  8
+#define ICN_IOCTL_ADDCARD   9
+
+/* Struct for adding new cards */
+typedef struct icn_cdef {
+	int port;
+	char id1[10];
+	char id2[10];
+} icn_cdef;
+
+#if defined(__KERNEL__) || defined(__DEBUGVAR__)
+
+#ifdef __KERNEL__
+/* Kernel includes */
+
+#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/isdnif.h>
+
+#endif                          /* __KERNEL__ */
+
+/* some useful macros for debugging */
+#ifdef ICN_DEBUG_PORT
+#define OUTB_P(v, p) {printk(KERN_DEBUG "icn: outb_p(0x%02x,0x%03x)\n", v, p); outb_p(v, p);}
+#else
+#define OUTB_P outb
+#endif
+
+/* Defaults for Port-Address and shared-memory */
+#define ICN_BASEADDR 0x320
+#define ICN_PORTLEN (0x04)
+#define ICN_MEMADDR 0x0d0000
+
+#define ICN_FLAGS_B1ACTIVE 1    /* B-Channel-1 is open                     */
+#define ICN_FLAGS_B2ACTIVE 2    /* B-Channel-2 is open                     */
+#define ICN_FLAGS_RUNNING  4    /* Cards driver activated                  */
+#define ICN_FLAGS_RBTIMER  8    /* cyclic scheduling of B-Channel-poll     */
+
+#define ICN_BOOT_TIMEOUT1  1000 /* Delay for Boot-download (msecs)         */
+
+#define ICN_TIMER_BCREAD (HZ / 100)	/* B-Channel poll-cycle                    */
+#define ICN_TIMER_DCREAD (HZ / 2) /* D-Channel poll-cycle                    */
+
+#define ICN_CODE_STAGE1 4096    /* Size of bootcode                        */
+#define ICN_CODE_STAGE2 65536   /* Size of protocol-code                   */
+
+#define ICN_MAX_SQUEUE 8000     /* Max. outstanding send-data (2* hw-buf.) */
+#define ICN_FRAGSIZE (250)      /* Max. size of send-fragments             */
+#define ICN_BCH 2               /* Number of supported channels per card   */
+
+/* type-definitions for accessing the mmap-io-areas */
+
+#define SHM_DCTL_OFFSET (0)     /* Offset to data-controlstructures in shm */
+#define SHM_CCTL_OFFSET (0x1d2) /* Offset to comm-controlstructures in shm */
+#define SHM_CBUF_OFFSET (0x200) /* Offset to comm-buffers in shm           */
+#define SHM_DBUF_OFFSET (0x2000)	/* Offset to data-buffers in shm           */
+
+/*
+ * Layout of card's data buffers
+ */
+typedef struct {
+	unsigned char length;   /* Bytecount of fragment (max 250)    */
+	unsigned char endflag;  /* 0=last frag., 0xff=frag. continued */
+	unsigned char data[ICN_FRAGSIZE];	/* The data                           */
+	/* Fill to 256 bytes */
+	char unused[0x100 - ICN_FRAGSIZE - 2];
+} frag_buf;
+
+/*
+ * Layout of card's shared memory
+ */
+typedef union {
+	struct {
+		unsigned char scns;	/* Index to free SendFrag.             */
+		unsigned char scnr;	/* Index to active SendFrag   READONLY */
+		unsigned char ecns;	/* Index to free RcvFrag.     READONLY */
+		unsigned char ecnr;	/* Index to valid RcvFrag              */
+		char unused[6];
+		unsigned short fuell1;	/* Internal Buf Bytecount              */
+	} data_control;
+	struct {
+		char unused[SHM_CCTL_OFFSET];
+		unsigned char iopc_i;	/* Read-Ptr Status-Queue      READONLY */
+		unsigned char iopc_o;	/* Write-Ptr Status-Queue              */
+		unsigned char pcio_i;	/* Write-Ptr Command-Queue             */
+		unsigned char pcio_o;	/* Read-Ptr Command Queue     READONLY */
+	} comm_control;
+	struct {
+		char unused[SHM_CBUF_OFFSET];
+		unsigned char pcio_buf[0x100];	/* Ring-Buffer Command-Queue           */
+		unsigned char iopc_buf[0x100];	/* Ring-Buffer Status-Queue            */
+	} comm_buffers;
+	struct {
+		char unused[SHM_DBUF_OFFSET];
+		frag_buf receive_buf[0x10];
+		frag_buf send_buf[0x10];
+	} data_buffers;
+} icn_shmem;
+
+/*
+ * Per card driver data
+ */
+typedef struct icn_card {
+	struct icn_card *next;  /* Pointer to next device struct    */
+	struct icn_card *other; /* Pointer to other card for ICN4B  */
+	unsigned short port;    /* Base-port-address                */
+	int myid;               /* Driver-Nr. assigned by linklevel */
+	int rvalid;             /* IO-portregion has been requested */
+	int leased;             /* Flag: This Adapter is connected  */
+				/*       to a leased line           */
+	unsigned short flags;   /* Statusflags                      */
+	int doubleS0;           /* Flag: ICN4B                      */
+	int secondhalf;         /* Flag: Second half of a doubleS0  */
+	int fw_rev;             /* Firmware revision loaded         */
+	int ptype;              /* Protocol type (1TR6 or Euro)     */
+	struct timer_list st_timer;   /* Timer for Status-Polls     */
+	struct timer_list rb_timer;   /* Timer for B-Channel-Polls  */
+	u_char rcvbuf[ICN_BCH][4096]; /* B-Channel-Receive-Buffers  */
+	int rcvidx[ICN_BCH];    /* Index for above buffers          */
+	int l2_proto[ICN_BCH];  /* Current layer-2-protocol         */
+	isdn_if interface;      /* Interface to upper layer         */
+	int iptr;               /* Index to imsg-buffer             */
+	char imsg[60];          /* Internal buf for status-parsing  */
+	char msg_buf[2048];     /* Buffer for status-messages       */
+	char *msg_buf_write;    /* Writepointer for statusbuffer    */
+	char *msg_buf_read;     /* Readpointer for statusbuffer     */
+	char *msg_buf_end;      /* Pointer to end of statusbuffer   */
+	int sndcount[ICN_BCH];  /* Byte-counters for B-Ch.-send     */
+	int xlen[ICN_BCH];      /* Byte-counters/Flags for sent-ACK */
+	struct sk_buff *xskb[ICN_BCH]; /* Current transmitted skb   */
+	struct sk_buff_head spqueue[ICN_BCH];  /* Sendqueue         */
+	char regname[35];       /* Name used for request_region     */
+	u_char xmit_lock[ICN_BCH]; /* Semaphore for pollbchan_send()*/
+	spinlock_t lock;        /* protect critical operations      */
+} icn_card;
+
+/*
+ * Main driver data
+ */
+typedef struct icn_dev {
+	spinlock_t devlock;     /* spinlock to protect this struct  */
+	unsigned long memaddr;	/* Address of memory mapped buffers */
+	icn_shmem __iomem *shmem;       /* Pointer to memory-mapped-buffers */
+	int mvalid;             /* IO-shmem has been requested      */
+	int channel;            /* Currently mapped channel         */
+	struct icn_card *mcard; /* Currently mapped card            */
+	int chanlock;           /* Semaphore for channel-mapping    */
+	int firstload;          /* Flag: firmware never loaded      */
+} icn_dev;
+
+typedef icn_dev *icn_devptr;
+
+#ifdef __KERNEL__
+
+static icn_card *cards = (icn_card *) 0;
+static u_char chan2bank[] =
+{0, 4, 8, 12};                  /* for icn_map_channel() */
+
+static icn_dev dev;
+
+#endif                          /* __KERNEL__ */
+
+/* Utility-Macros */
+
+/* Macros for accessing ports */
+#define ICN_CFG    (card->port)
+#define ICN_MAPRAM (card->port + 1)
+#define ICN_RUN    (card->port + 2)
+#define ICN_BANK   (card->port + 3)
+
+/* Return true, if there is a free transmit-buffer */
+#define sbfree (((readb(&dev.shmem->data_control.scns) + 1) & 0xf) !=	\
+		readb(&dev.shmem->data_control.scnr))
+
+/* Switch to next transmit-buffer */
+#define sbnext (writeb((readb(&dev.shmem->data_control.scns) + 1) & 0xf,	\
+		       &dev.shmem->data_control.scns))
+
+/* Shortcuts for transmit-buffer-access */
+#define sbuf_n dev.shmem->data_control.scns
+#define sbuf_d dev.shmem->data_buffers.send_buf[readb(&sbuf_n)].data
+#define sbuf_l dev.shmem->data_buffers.send_buf[readb(&sbuf_n)].length
+#define sbuf_f dev.shmem->data_buffers.send_buf[readb(&sbuf_n)].endflag
+
+/* Return true, if there is receive-data is available */
+#define rbavl  (readb(&dev.shmem->data_control.ecnr) != \
+		readb(&dev.shmem->data_control.ecns))
+
+/* Switch to next receive-buffer */
+#define rbnext (writeb((readb(&dev.shmem->data_control.ecnr) + 1) & 0xf,	\
+		       &dev.shmem->data_control.ecnr))
+
+/* Shortcuts for receive-buffer-access */
+#define rbuf_n dev.shmem->data_control.ecnr
+#define rbuf_d dev.shmem->data_buffers.receive_buf[readb(&rbuf_n)].data
+#define rbuf_l dev.shmem->data_buffers.receive_buf[readb(&rbuf_n)].length
+#define rbuf_f dev.shmem->data_buffers.receive_buf[readb(&rbuf_n)].endflag
+
+/* Shortcuts for command-buffer-access */
+#define cmd_o (dev.shmem->comm_control.pcio_o)
+#define cmd_i (dev.shmem->comm_control.pcio_i)
+
+/* Return free space in command-buffer */
+#define cmd_free ((readb(&cmd_i) >= readb(&cmd_o)) ?		\
+		  0x100 - readb(&cmd_i) + readb(&cmd_o) :	\
+		  readb(&cmd_o) - readb(&cmd_i))
+
+/* Shortcuts for message-buffer-access */
+#define msg_o (dev.shmem->comm_control.iopc_o)
+#define msg_i (dev.shmem->comm_control.iopc_i)
+
+/* Return length of Message, if avail. */
+#define msg_avail ((readb(&msg_o) > readb(&msg_i)) ?		\
+		   0x100 - readb(&msg_o) + readb(&msg_i) :	\
+		   readb(&msg_i) - readb(&msg_o))
+
+#define CID (card->interface.id)
+
+#endif                          /* defined(__KERNEL__) || defined(__DEBUGVAR__) */
+#endif                          /* icn_h */