The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*-
    2  * Copyright (c) 1998 Doug Rabson
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD$
   27  */
   28 
   29 #ifndef _ISA_ISAVAR_H_
   30 #define _ISA_ISAVAR_H_
   31 
   32 struct isa_config;
   33 struct isa_pnp_id;
   34 typedef void isa_config_cb(void *arg, struct isa_config *config, int enable);
   35 
   36 #include "isa_if.h"
   37 #include <isa/pnpvar.h>
   38 
   39 #ifdef _KERNEL
   40 
   41 /*
   42  * ISA devices are partially ordered to ensure that devices which are
   43  * sensitive to other driver probe routines are probed first. Plug and
   44  * Play devices are added after devices with speculative probes so that
   45  * the legacy hardware can claim resources allowing the Plug and Play
   46  * hardware to choose different resources.
   47  */
   48 #define ISA_ORDER_SENSITIVE     0 /* legacy sensitive hardware */
   49 #define ISA_ORDER_SPECULATIVE   1 /* legacy non-sensitive hardware */
   50 #define ISA_ORDER_PNP           2 /* plug-and-play hardware */
   51 
   52 /*
   53  * Limits on resources that we can manage
   54  */
   55 #define ISA_NPORT       50
   56 #define ISA_NMEM        50
   57 #define ISA_NIRQ        50
   58 #define ISA_NDRQ        50
   59 
   60 /*
   61  * Limits on resources the hardware can actually handle
   62  */
   63 #define ISA_PNP_NPORT   8
   64 #define ISA_PNP_NMEM    4
   65 #define ISA_PNP_NIRQ    2
   66 #define ISA_PNP_NDRQ    2
   67 
   68 #define ISADMA_READ     0x00100000
   69 #define ISADMA_WRITE    0
   70 #define ISADMA_RAW      0x00080000
   71 /*
   72  * Plug and play cards can support a range of resource
   73  * configurations. This structure is used by the isapnp parser to
   74  * inform the isa bus about the resource possibilities of the
   75  * device. Each different alternative should be supplied by calling
   76  * ISA_ADD_CONFIG().
   77  */
   78 struct isa_range {
   79         u_int32_t               ir_start;
   80         u_int32_t               ir_end;
   81         u_int32_t               ir_size;
   82         u_int32_t               ir_align;
   83 };
   84 
   85 struct isa_config {
   86         struct isa_range        ic_mem[ISA_NMEM];
   87         struct isa_range        ic_port[ISA_NPORT];
   88         u_int32_t               ic_irqmask[ISA_NIRQ];
   89         u_int32_t               ic_drqmask[ISA_NDRQ];
   90         int                     ic_nmem;
   91         int                     ic_nport;
   92         int                     ic_nirq;
   93         int                     ic_ndrq;
   94 };
   95 
   96 /*
   97  * Used to build lists of IDs and description strings for PnP drivers.
   98  */
   99 struct isa_pnp_id {
  100         u_int32_t               ip_id;
  101         const char              *ip_desc;
  102 };
  103 
  104 enum isa_device_ivars {
  105         ISA_IVAR_PORT,
  106         ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
  107         ISA_IVAR_PORT_1,
  108         ISA_IVAR_PORTSIZE,
  109         ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
  110         ISA_IVAR_PORTSIZE_1,
  111         ISA_IVAR_MADDR,
  112         ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
  113         ISA_IVAR_MADDR_1,
  114         ISA_IVAR_MEMSIZE,
  115         ISA_IVAR_MEMSIZE_0 = ISA_IVAR_MEMSIZE,
  116         ISA_IVAR_MEMSIZE_1,
  117         ISA_IVAR_IRQ,
  118         ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
  119         ISA_IVAR_IRQ_1,
  120         ISA_IVAR_DRQ,
  121         ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
  122         ISA_IVAR_DRQ_1,
  123         ISA_IVAR_VENDORID,
  124         ISA_IVAR_SERIAL,
  125         ISA_IVAR_LOGICALID,
  126         ISA_IVAR_COMPATID,
  127         ISA_IVAR_CONFIGATTR
  128 };
  129 
  130 /*
  131  * ISA_IVAR_CONFIGATTR bits
  132  */
  133 #define ISACFGATTR_CANDISABLE   (1 << 0)        /* can be disabled */
  134 #define ISACFGATTR_DYNAMIC      (1 << 1)        /* dynamic configuration */
  135 #define ISACFGATTR_MULTI        (1 << 2)        /* multiple configurations */
  136 
  137 /*
  138  * Simplified accessors for isa devices
  139  */
  140 #define ISA_ACCESSOR(var, ivar, type)                                   \
  141         __BUS_ACCESSOR(isa, var, ISA, ivar, type)
  142 
  143 ISA_ACCESSOR(port, PORT, int)
  144 ISA_ACCESSOR(portsize, PORTSIZE, int)
  145 ISA_ACCESSOR(irq, IRQ, int)
  146 ISA_ACCESSOR(drq, DRQ, int)
  147 ISA_ACCESSOR(maddr, MADDR, int)
  148 ISA_ACCESSOR(msize, MEMSIZE, int)
  149 ISA_ACCESSOR(vendorid, VENDORID, int)
  150 ISA_ACCESSOR(serial, SERIAL, int)
  151 ISA_ACCESSOR(logicalid, LOGICALID, int)
  152 ISA_ACCESSOR(compatid, COMPATID, int)
  153 ISA_ACCESSOR(configattr, CONFIGATTR, int)
  154 
  155 /* Device class for ISA bridges. */
  156 extern devclass_t isab_devclass;
  157 
  158 extern intrmask_t isa_irq_pending(void);
  159 extern void     isa_probe_children(device_t dev);
  160 
  161 void    isa_dmacascade(int chan);
  162 void    isa_dmadone(int flags, caddr_t addr, int nbytes, int chan);
  163 void    isa_dmainit(int chan, u_int bouncebufsize);
  164 void    isa_dmastart(int flags, caddr_t addr, u_int nbytes, int chan);
  165 int     isa_dma_acquire(int chan);
  166 void    isa_dma_release(int chan);
  167 int     isa_dmastatus(int chan);
  168 int     isa_dmastop(int chan);
  169 int     isa_dmatc(int chan);
  170 
  171 int     isab_attach(device_t dev);
  172 
  173 #ifdef PC98
  174 #include <machine/bus.h>
  175 
  176 /*
  177  * Allocate discontinuous resources for ISA bus.
  178  */
  179 struct resource *
  180 isa_alloc_resourcev(device_t child, int type, int *rid,
  181                     bus_addr_t *res, bus_size_t count, u_int flags);
  182 int
  183 isa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count);
  184 #endif
  185 
  186 #endif /* _KERNEL */
  187 
  188 #endif /* !_ISA_ISAVAR_H_ */

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