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: releng/8.3/sys/isa/isavar.h 199583 2009-11-20 15:27:52Z jhb $
   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.  This is to ensure that hardwired
   43  * devices the BIOS tells us are there appear first, then speculative
   44  * devices that are sensitive to the probe order, then devices that
   45  * are hinted to be there, then the most flexible devices which support
   46  * the ISA bus PNP standard.
   47  */
   48 #define ISA_ORDER_PNPBIOS       10 /* plug-and-play BIOS inflexible hardware */
   49 #define ISA_ORDER_SENSITIVE     20 /* legacy sensitive hardware */
   50 #define ISA_ORDER_SPECULATIVE   30 /* legacy non-sensitive hardware */
   51 #define ISA_ORDER_PNP           40 /* plug-and-play flexible hardware */
   52 
   53 /*
   54  * Limits on resources that we can manage
   55  */
   56 #define ISA_NPORT       50
   57 #define ISA_NMEM        50
   58 #define ISA_NIRQ        50
   59 #define ISA_NDRQ        50
   60 
   61 /*
   62  * Limits on resources the hardware can actually handle
   63  */
   64 #define ISA_PNP_NPORT   8
   65 #define ISA_PNP_NMEM    4
   66 #define ISA_PNP_NIRQ    2
   67 #define ISA_PNP_NDRQ    2
   68 
   69 #define ISADMA_READ     0x00100000
   70 #define ISADMA_WRITE    0
   71 #define ISADMA_RAW      0x00080000
   72 /*
   73  * Plug and play cards can support a range of resource
   74  * configurations. This structure is used by the isapnp parser to
   75  * inform the isa bus about the resource possibilities of the
   76  * device. Each different alternative should be supplied by calling
   77  * ISA_ADD_CONFIG().
   78  */
   79 struct isa_range {
   80         u_int32_t               ir_start;
   81         u_int32_t               ir_end;
   82         u_int32_t               ir_size;
   83         u_int32_t               ir_align;
   84 };
   85 
   86 struct isa_config {
   87         struct isa_range        ic_mem[ISA_NMEM];
   88         struct isa_range        ic_port[ISA_NPORT];
   89         u_int32_t               ic_irqmask[ISA_NIRQ];
   90         u_int32_t               ic_drqmask[ISA_NDRQ];
   91         int                     ic_nmem;
   92         int                     ic_nport;
   93         int                     ic_nirq;
   94         int                     ic_ndrq;
   95 };
   96 
   97 /*
   98  * Used to build lists of IDs and description strings for PnP drivers.
   99  */
  100 struct isa_pnp_id {
  101         u_int32_t               ip_id;
  102         const char              *ip_desc;
  103 };
  104 
  105 enum isa_device_ivars {
  106         ISA_IVAR_PORT,
  107         ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
  108         ISA_IVAR_PORT_1,
  109         ISA_IVAR_PORTSIZE,
  110         ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
  111         ISA_IVAR_PORTSIZE_1,
  112         ISA_IVAR_MADDR,
  113         ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
  114         ISA_IVAR_MADDR_1,
  115         ISA_IVAR_MEMSIZE,
  116         ISA_IVAR_MEMSIZE_0 = ISA_IVAR_MEMSIZE,
  117         ISA_IVAR_MEMSIZE_1,
  118         ISA_IVAR_IRQ,
  119         ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
  120         ISA_IVAR_IRQ_1,
  121         ISA_IVAR_DRQ,
  122         ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
  123         ISA_IVAR_DRQ_1,
  124         ISA_IVAR_VENDORID,
  125         ISA_IVAR_SERIAL,
  126         ISA_IVAR_LOGICALID,
  127         ISA_IVAR_COMPATID,
  128         ISA_IVAR_CONFIGATTR,
  129         ISA_IVAR_PNP_CSN,
  130         ISA_IVAR_PNP_LDN,
  131         ISA_IVAR_PNPBIOS_HANDLE
  132 };
  133 
  134 /*
  135  * ISA_IVAR_CONFIGATTR bits
  136  */
  137 #define ISACFGATTR_CANDISABLE   (1 << 0)        /* can be disabled */
  138 #define ISACFGATTR_DYNAMIC      (1 << 1)        /* dynamic configuration */
  139 #define ISACFGATTR_HINTS        (1 << 3)        /* source of config is hints */
  140 
  141 /*
  142  * Simplified accessors for isa devices
  143  */
  144 #define ISA_ACCESSOR(var, ivar, type)                                   \
  145         __BUS_ACCESSOR(isa, var, ISA, ivar, type)
  146 
  147 ISA_ACCESSOR(port, PORT, int)
  148 ISA_ACCESSOR(portsize, PORTSIZE, int)
  149 ISA_ACCESSOR(irq, IRQ, int)
  150 ISA_ACCESSOR(drq, DRQ, int)
  151 ISA_ACCESSOR(maddr, MADDR, int)
  152 ISA_ACCESSOR(msize, MEMSIZE, int)
  153 ISA_ACCESSOR(vendorid, VENDORID, int)
  154 ISA_ACCESSOR(serial, SERIAL, int)
  155 ISA_ACCESSOR(logicalid, LOGICALID, int)
  156 ISA_ACCESSOR(compatid, COMPATID, int)
  157 ISA_ACCESSOR(configattr, CONFIGATTR, int)
  158 ISA_ACCESSOR(pnp_csn, PNP_CSN, int)
  159 ISA_ACCESSOR(pnp_ldn, PNP_LDN, int)
  160 ISA_ACCESSOR(pnpbios_handle, PNPBIOS_HANDLE, int)
  161 
  162 /* Device class for ISA bridges. */
  163 extern devclass_t isab_devclass;
  164 
  165 extern intrmask_t isa_irq_pending(void);
  166 extern void     isa_probe_children(device_t dev);
  167 
  168 void    isa_dmacascade(int chan);
  169 void    isa_dmadone(int flags, caddr_t addr, int nbytes, int chan);
  170 int     isa_dma_init(int chan, u_int bouncebufsize, int flag);
  171 void    isa_dmastart(int flags, caddr_t addr, u_int nbytes, int chan);
  172 int     isa_dma_acquire(int chan);
  173 void    isa_dma_release(int chan);
  174 int     isa_dmastatus(int chan);
  175 int     isa_dmastop(int chan);
  176 int     isa_dmatc(int chan);
  177 
  178 #define isa_dmainit(chan, size) do { \
  179         if (isa_dma_init(chan, size, M_NOWAIT)) \
  180                 printf("WARNING: isa_dma_init(%d, %ju) failed\n", \
  181                     (int)(chan), (uintmax_t)(size)); \
  182         } while (0) 
  183 
  184 void    isa_hinted_child(device_t parent, const char *name, int unit);
  185 void    isa_hint_device_unit(device_t bus, device_t child, const char *name,
  186             int *unitp);
  187 int     isab_attach(device_t dev);
  188 
  189 #ifdef PC98
  190 #include <machine/bus.h>
  191 
  192 /*
  193  * Allocate discontinuous resources for ISA bus.
  194  */
  195 struct resource *
  196 isa_alloc_resourcev(device_t child, int type, int *rid,
  197                     bus_addr_t *res, bus_size_t count, u_int flags);
  198 int
  199 isa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count);
  200 #endif
  201 
  202 #endif /* _KERNEL */
  203 
  204 #endif /* !_ISA_ISAVAR_H_ */

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