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: src/sys/isa/isavar.h,v 1.16.2.2 2000/10/29 13:07:56 nyan Exp $
   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 #define ISA_NPORT       50
   53 #define ISA_NMEM        8
   54 #define ISA_NIRQ        2
   55 #define ISA_NDRQ        2
   56 
   57 #define ISADMA_READ     0x00100000
   58 #define ISADMA_WRITE    0
   59 #define ISADMA_RAW      0x00080000
   60 /*
   61  * Plug and play cards can support a range of resource
   62  * configurations. This structure is used by the isapnp parser to
   63  * inform the isa bus about the resource possibilities of the
   64  * device. Each different alternative should be supplied by calling
   65  * ISA_ADD_CONFIG().
   66  */
   67 struct isa_range {
   68         u_int32_t               ir_start;
   69         u_int32_t               ir_end;
   70         u_int32_t               ir_size;
   71         u_int32_t               ir_align;
   72 };
   73 
   74 struct isa_config {
   75         struct isa_range        ic_mem[ISA_NMEM];
   76         struct isa_range        ic_port[ISA_NPORT];
   77         u_int32_t               ic_irqmask[ISA_NIRQ];
   78         u_int32_t               ic_drqmask[ISA_NDRQ];
   79         int                     ic_nmem;
   80         int                     ic_nport;
   81         int                     ic_nirq;
   82         int                     ic_ndrq;
   83 };
   84 
   85 /*
   86  * Used to build lists of IDs and description strings for PnP drivers.
   87  */
   88 struct isa_pnp_id {
   89         u_int32_t               ip_id;
   90         const char              *ip_desc;
   91 };
   92 
   93 enum isa_device_ivars {
   94         ISA_IVAR_PORT,
   95         ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
   96         ISA_IVAR_PORT_1,
   97         ISA_IVAR_PORTSIZE,
   98         ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
   99         ISA_IVAR_PORTSIZE_1,
  100         ISA_IVAR_MADDR,
  101         ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
  102         ISA_IVAR_MADDR_1,
  103         ISA_IVAR_MSIZE,
  104         ISA_IVAR_MSIZE_0 = ISA_IVAR_MSIZE,
  105         ISA_IVAR_MSIZE_1,
  106         ISA_IVAR_IRQ,
  107         ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
  108         ISA_IVAR_IRQ_1,
  109         ISA_IVAR_DRQ,
  110         ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
  111         ISA_IVAR_DRQ_1,
  112         ISA_IVAR_VENDORID,
  113         ISA_IVAR_SERIAL,
  114         ISA_IVAR_LOGICALID,
  115         ISA_IVAR_COMPATID
  116 };
  117 
  118 /*
  119  * Simplified accessors for isa devices
  120  */
  121 #define ISA_ACCESSOR(A, B, T)                                           \
  122                                                                         \
  123 static __inline T isa_get_ ## A(device_t dev)                           \
  124 {                                                                       \
  125         uintptr_t v;                                                    \
  126         BUS_READ_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, &v); \
  127         return (T) v;                                                   \
  128 }                                                                       \
  129                                                                         \
  130 static __inline void isa_set_ ## A(device_t dev, T t)                   \
  131 {                                                                       \
  132         u_long v = (u_long) t;                                          \
  133         BUS_WRITE_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, v); \
  134 }
  135 
  136 ISA_ACCESSOR(port, PORT, int)
  137 ISA_ACCESSOR(portsize, PORTSIZE, int)
  138 ISA_ACCESSOR(irq, IRQ, int)
  139 ISA_ACCESSOR(drq, DRQ, int)
  140 ISA_ACCESSOR(maddr, MADDR, int)
  141 ISA_ACCESSOR(msize, MSIZE, int)
  142 ISA_ACCESSOR(vendorid, VENDORID, int)
  143 ISA_ACCESSOR(serial, SERIAL, int)
  144 ISA_ACCESSOR(logicalid, LOGICALID, int)
  145 ISA_ACCESSOR(compatid, COMPATID, int)
  146 
  147 extern intrmask_t isa_irq_pending(void);
  148 extern intrmask_t isa_irq_mask(void);
  149 #ifdef __i386__
  150 extern void      isa_wrap_old_drivers(void);
  151 #endif
  152 extern void     isa_probe_children(device_t dev);
  153 
  154 extern void     isa_dmacascade __P((int chan));
  155 extern void     isa_dmadone __P((int flags, caddr_t addr, int nbytes, int chan));
  156 extern void     isa_dmainit __P((int chan, u_int bouncebufsize));
  157 extern void     isa_dmastart __P((int flags, caddr_t addr, u_int nbytes, int chan));
  158 extern int      isa_dma_acquire __P((int chan));
  159 extern void     isa_dma_release __P((int chan));
  160 extern int      isa_dmastatus __P((int chan));
  161 extern int      isa_dmastop __P((int chan));
  162 
  163 #ifdef PC98
  164 #include <machine/bus.h>
  165 
  166 /*
  167  * Allocate discontinuous resources for ISA bus.
  168  */
  169 struct resource *
  170 isa_alloc_resourcev(device_t child, int type, int *rid,
  171                     bus_addr_t *res, bus_size_t count, u_int flags);
  172 int
  173 isa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count);
  174 #endif
  175 
  176 #endif /* _KERNEL */
  177 
  178 #endif /* !_ISA_ISAVAR_H_ */

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