FreeBSD/Linux Kernel Cross Reference
sys/i386/isa/isa_device.h

     /*-
      * Copyright (c) 1991 The Regents of the University of California.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the University of
     *      California, Berkeley and its contributors.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      from: @(#)isa_device.h  7.1 (Berkeley) 5/9/91
     * $FreeBSD: src/sys/i386/isa/isa_device.h,v 1.33.2.4 1999/09/05 08:13:04 peter Exp $
     */
    
    #ifndef _I386_ISA_ISA_DEVICE_H_
    #define _I386_ISA_ISA_DEVICE_H_
    
    /*
     * ISA Bus Autoconfiguration
     */
    
    #define IDTVEC(name)    __CONCAT(X,name)
    
    /*
     * Type of the first (asm) part of an interrupt handler.
     */
    typedef void inthand_t __P((u_int cs, u_int ef, u_int esp, u_int ss));
    
    /*
     * Usual type of the second (C) part of an interrupt handler.  Some bogus
     * ones need the arg to be the interrupt frame (and not a copy of it, which
     * is all that is possible in C).
     */
    typedef void inthand2_t __P((int unit));
    
    /*
     * Per device structure.
     *
     * XXX Note:  id_conflicts should either become an array of things we're
     * specifically allowed to conflict with or be subsumed into some
     * more powerful mechanism for detecting and dealing with multiple types
     * of non-fatal conflict.  -jkh XXX
     */
    struct isa_device {
            int     id_id;          /* device id */
            struct  isa_driver *id_driver;
            int     id_iobase;      /* base i/o address */
            u_short id_irq;         /* interrupt request */
            short   id_drq;         /* DMA request */
            caddr_t id_maddr;       /* physical i/o memory address on bus (if any)*/
            int     id_msize;       /* size of i/o memory */
            inthand2_t *id_intr;    /* interrupt interface routine */
            int     id_unit;        /* unit number */
            int     id_flags;       /* flags */
            int     id_scsiid;      /* scsi id if needed */
            int     id_alive;       /* device is present */
    #define RI_FAST         1               /* fast interrupt handler */
            u_int   id_ri_flags;    /* flags for register_intr() */
            int     id_reconfig;    /* hot eject device support (such as PCMCIA) */
            int     id_enabled;     /* is device enabled */
            int     id_conflicts;   /* we're allowed to conflict with things */
            struct isa_device *id_next; /* used in isa_devlist in userconfig() */
    };
    
    /*
     * Bits to specify the type and amount of conflict checking.
     */
    #define CC_ATTACH       (1 << 0)
    #define CC_DRQ          (1 << 1)
    #define CC_IOADDR       (1 << 2)
    #define CC_IRQ          (1 << 3)
    #define CC_MEMADDR      (1 << 4)
    
    /*
     * Per-driver structure.
     *
     * Each device driver defines entries for a set of routines
    * as well as an array of types which are acceptable to it.
    * These are used at boot time by the configuration program.
    */
   struct isa_driver {
           int     (*probe) __P((struct isa_device *idp));
                                           /* test whether device is present */
           int     (*attach) __P((struct isa_device *idp));
                                           /* setup driver for a device */
           char    *name;                  /* device name */
           int     sensitive_hw;           /* true if other probes confuse us */
   };
   
   #define ISA_EXTERNALLEN (sizeof(struct isa_device))
   
   #ifdef KERNEL
   
   extern char eintrnames[];       /* end of intrnames[] */
   extern u_long intrcnt[];        /* counts for for each device and stray */
   extern char intrnames[];        /* string table containing device names */
   extern u_long *intr_countp[];   /* pointers into intrcnt[] */
   extern inthand2_t *intr_handler[];      /* C entry points of intr handlers */
   extern u_int intr_mask[];       /* sets of intrs masked during handling of 1 */
   extern int intr_unit[];         /* cookies to pass to intr handlers */
   
   extern struct isa_device isa_biotab_fdc[];
   extern struct isa_device isa_biotab_wdc[];
   extern struct isa_device isa_devtab_bio[];
   extern struct isa_device isa_devtab_cam[];
   extern struct isa_device isa_devtab_net[];
   extern struct isa_device isa_devtab_null[];
   extern struct isa_device isa_devtab_tty[];
   
   inthand_t
           IDTVEC(fastintr0), IDTVEC(fastintr1),
           IDTVEC(fastintr2), IDTVEC(fastintr3),
           IDTVEC(fastintr4), IDTVEC(fastintr5),
           IDTVEC(fastintr6), IDTVEC(fastintr7),
           IDTVEC(fastintr8), IDTVEC(fastintr9),
           IDTVEC(fastintr10), IDTVEC(fastintr11),
           IDTVEC(fastintr12), IDTVEC(fastintr13),
           IDTVEC(fastintr14), IDTVEC(fastintr15);
   inthand_t
           IDTVEC(intr0), IDTVEC(intr1), IDTVEC(intr2), IDTVEC(intr3),
           IDTVEC(intr4), IDTVEC(intr5), IDTVEC(intr6), IDTVEC(intr7),
           IDTVEC(intr8), IDTVEC(intr9), IDTVEC(intr10), IDTVEC(intr11),
           IDTVEC(intr12), IDTVEC(intr13), IDTVEC(intr14), IDTVEC(intr15);
   struct isa_device *
           find_display __P((void));
   struct isa_device *
           find_isadev __P((struct isa_device *table, struct isa_driver *driverp,
                            int unit));
   int     haveseen_isadev __P((struct isa_device *dvp, u_int checkbits));
   void    isa_configure __P((void));
   void    isa_defaultirq __P((void));
   void    isa_dmacascade __P((int chan));
   void    isa_dmadone __P((int flags, caddr_t addr, int nbytes, int chan));
   void    isa_dmainit __P((int chan, u_int bouncebufsize));
   void    isa_dmastart __P((int flags, caddr_t addr, u_int nbytes, int chan));
   int     isa_dma_acquire __P((int chan));
   void    isa_dma_release __P((int chan));
   int     isa_dmastatus __P((int chan));
   int     isa_dmastop __P((int chan));
   u_int   isa_irq_pending __P((void));
   int     isa_nmi __P((int cd));
   void    reconfig_isadev __P((struct isa_device *isdp, u_int *mp));
   int     register_intr __P((int intr, int device_id, u_int flags,
                              inthand2_t *handler, u_int *maskptr, int unit));
   int     unregister_intr __P((int intr, inthand2_t *handler));
   int     update_intr_masks __P((void));
   
   #endif /* KERNEL */
   
   #endif /* !_I386_ISA_ISA_DEVICE_H_ */

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