/* $Id: icn.h,v 1.30 2000/11/13 22:51:48 kai Exp $ * ISDN lowlevel-module for the ICN active ISDN-Card. * * Copyright 1994 by Fritz Elfert (fritz@isdn4linux.de) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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 { 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; /* With modutils >= 1.1.67 Integers can be changed while loading a * module. For this reason define the Port-Base an Shmem-Base as * integers. */ static int portbase = ICN_BASEADDR; static int membase = ICN_MEMADDR; static char *icn_id = "\0"; static char *icn_id2 = "\0"; #ifdef MODULE MODULE_AUTHOR("Fritz Elfert"); MODULE_PARM(portbase, "i"); MODULE_PARM_DESC(portbase, "Port adress of first card"); MODULE_PARM(membase, "i"); MODULE_PARM_DESC(membase, "Shared memory adress of all cards"); MODULE_PARM(icn_id, "s"); MODULE_PARM_DESC(icn_id, "ID-String of first card"); MODULE_PARM(icn_id2, "s"); MODULE_PARM_DESC(icn_id2, "ID-String of first card, second S0 (4B only)"); #endif #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) #define MIN(a,b) ((ab)?a:b) /* Hopefully, a separate resource-registration-scheme for shared-memory * will be introduced into the kernel. Until then, we use the normal * routines, designed for port-registration. */ #define check_shmem check_region #define release_shmem release_region #define request_shmem request_region #endif /* defined(__KERNEL__) || defined(__DEBUGVAR__) */ #endif /* icn_h */