diff options
Diffstat (limited to 'drivers/isdn/icn/icn.h')
| -rw-r--r-- | drivers/isdn/icn/icn.h | 253 |
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 */ |