FreeBSD/Linux Kernel Cross Reference
sys/isa/isavar.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 1998 Doug Rabson
      * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _ISA_ISAVAR_H_
    #define _ISA_ISAVAR_H_
    
    struct isa_config;
    struct isa_pnp_id;
    typedef void isa_config_cb(void *arg, struct isa_config *config, int enable);
    
    #include "isa_if.h"
    #include <isa/pnpvar.h>
    
    #ifdef _KERNEL
    
    /*
     * ISA devices are partially ordered.  This is to ensure that hardwired
     * devices the BIOS tells us are there appear first, then speculative
     * devices that are sensitive to the probe order, then devices that
     * are hinted to be there, then the most flexible devices which support
     * the ISA bus PNP standard.
     */
    #define ISA_ORDER_PNPBIOS       10 /* plug-and-play BIOS inflexible hardware */
    #define ISA_ORDER_SENSITIVE     20 /* legacy sensitive hardware */
    #define ISA_ORDER_SPECULATIVE   30 /* legacy non-sensitive hardware */
    #define ISA_ORDER_PNP           40 /* plug-and-play flexible hardware */
    
    /*
     * Limits on resources that we can manage
     */
    #define ISA_NPORT       50
    #define ISA_NMEM        50
    #define ISA_NIRQ        50
    #define ISA_NDRQ        50
    
    /*
     * Limits on resources the hardware can actually handle
     */
    #define ISA_PNP_NPORT   8
    #define ISA_PNP_NMEM    4
    #define ISA_PNP_NIRQ    2
    #define ISA_PNP_NDRQ    2
    
    #define ISADMA_READ     0x00100000
    #define ISADMA_WRITE    0
    #define ISADMA_RAW      0x00080000
    /*
     * Plug and play cards can support a range of resource
     * configurations. This structure is used by the isapnp parser to
     * inform the isa bus about the resource possibilities of the
     * device. Each different alternative should be supplied by calling
     * ISA_ADD_CONFIG().
     */
    struct isa_range {
            u_int32_t               ir_start;
            u_int32_t               ir_end;
            u_int32_t               ir_size;
            u_int32_t               ir_align;
    };
    
    struct isa_config {
            struct isa_range        ic_mem[ISA_NMEM];
            struct isa_range        ic_port[ISA_NPORT];
            u_int32_t               ic_irqmask[ISA_NIRQ];
            u_int32_t               ic_drqmask[ISA_NDRQ];
            int                     ic_nmem;
            int                     ic_nport;
            int                     ic_nirq;
            int                     ic_ndrq;
    };
    
    /*
    * Used to build lists of IDs and description strings for PnP drivers.
    */
   struct isa_pnp_id {
           u_int32_t               ip_id;
           const char              *ip_desc;
   };
   
   enum isa_device_ivars {
           ISA_IVAR_PORT,
           ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
           ISA_IVAR_PORT_1,
           ISA_IVAR_PORTSIZE,
           ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
           ISA_IVAR_PORTSIZE_1,
           ISA_IVAR_MADDR,
           ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
           ISA_IVAR_MADDR_1,
           ISA_IVAR_MEMSIZE,
           ISA_IVAR_MEMSIZE_0 = ISA_IVAR_MEMSIZE,
           ISA_IVAR_MEMSIZE_1,
           ISA_IVAR_IRQ,
           ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
           ISA_IVAR_IRQ_1,
           ISA_IVAR_DRQ,
           ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
           ISA_IVAR_DRQ_1,
           ISA_IVAR_VENDORID,
           ISA_IVAR_SERIAL,
           ISA_IVAR_LOGICALID,
           ISA_IVAR_COMPATID,
           ISA_IVAR_CONFIGATTR,
           ISA_IVAR_PNP_CSN,
           ISA_IVAR_PNP_LDN,
           ISA_IVAR_PNPBIOS_HANDLE
   };
   
   /*
    * ISA_IVAR_CONFIGATTR bits
    */
   #define ISACFGATTR_CANDISABLE   (1 << 0)        /* can be disabled */
   #define ISACFGATTR_DYNAMIC      (1 << 1)        /* dynamic configuration */
   #define ISACFGATTR_HINTS        (1 << 3)        /* source of config is hints */
   
   #define ISA_PNP_DESCR "E:pnpid;D:#"
   #define ISA_PNP_INFO(t) \
           MODULE_PNP_INFO(ISA_PNP_DESCR, isa, t, t, nitems(t) - 1); \
   
   /*
    * Simplified accessors for isa devices
    */
   #define ISA_ACCESSOR(var, ivar, type)                                   \
           __BUS_ACCESSOR(isa, var, ISA, ivar, type)
   
   ISA_ACCESSOR(port, PORT, int)
   ISA_ACCESSOR(portsize, PORTSIZE, int)
   ISA_ACCESSOR(irq, IRQ, int)
   ISA_ACCESSOR(drq, DRQ, int)
   ISA_ACCESSOR(maddr, MADDR, int)
   ISA_ACCESSOR(msize, MEMSIZE, int)
   ISA_ACCESSOR(vendorid, VENDORID, int)
   ISA_ACCESSOR(serial, SERIAL, int)
   ISA_ACCESSOR(logicalid, LOGICALID, int)
   ISA_ACCESSOR(compatid, COMPATID, int)
   ISA_ACCESSOR(configattr, CONFIGATTR, int)
   ISA_ACCESSOR(pnp_csn, PNP_CSN, int)
   ISA_ACCESSOR(pnp_ldn, PNP_LDN, int)
   ISA_ACCESSOR(pnpbios_handle, PNPBIOS_HANDLE, int)
   
   /* Device class for ISA bridges. */
   extern devclass_t isab_devclass;
   
   extern void     isa_probe_children(device_t dev);
   
   void    isa_dmacascade(int chan);
   void    isa_dmadone(int flags, caddr_t addr, int nbytes, int chan);
   int     isa_dma_init(int chan, u_int bouncebufsize, int flag);
   void    isa_dmastart(int flags, caddr_t addr, u_int nbytes, int chan);
   int     isa_dma_acquire(int chan);
   void    isa_dma_release(int chan);
   int     isa_dmastatus(int chan);
   int     isa_dmastop(int chan);
   int     isa_dmatc(int chan);
   
   #define isa_dmainit(chan, size) do { \
           if (isa_dma_init(chan, size, M_NOWAIT)) \
                   printf("WARNING: isa_dma_init(%d, %ju) failed\n", \
                       (int)(chan), (uintmax_t)(size)); \
           } while (0) 
   
   void    isa_hinted_child(device_t parent, const char *name, int unit);
   void    isa_hint_device_unit(device_t bus, device_t child, const char *name,
               int *unitp);
   int     isab_attach(device_t dev);
   
   #endif /* _KERNEL */
   
   #endif /* !_ISA_ISAVAR_H_ */

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