icn.h
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- /* $Id: icn.h,v 1.1.4.1 2001/11/20 14:19:37 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/version.h>
- #include <linux/errno.h>
- #include <linux/fs.h>
- #include <linux/major.h>
- #include <asm/segment.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 (HZ) /* Delay for Boot-download (jiffies) */
- #define ICN_CHANLOCK_DELAY (HZ/10) /* Delay for Channel-mapping (jiffies) */
- #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() */
- } icn_card;
- /*
- * Main driver data
- */
- typedef struct icn_dev {
- unsigned long memaddr; /* Address of memory mapped buffers */
- icn_shmem *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 */