The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/pci/agppriv.h

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    1 /*-
    2  * Copyright (c) 2000 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 _PCI_AGPPRIV_H_
   30 #define _PCI_AGPPRIV_H_
   31 
   32 /*
   33  * This file *must not* be included by code outside the agp driver itself.
   34  */
   35 
   36 #include <sys/agpio.h>
   37 #include <pci/agpvar.h>
   38 
   39 #define AGP_DEBUGxx
   40 
   41 #ifdef AGP_DEBUG
   42 #define AGP_DPF(x...) do {                      \
   43     printf("agp: ");                            \
   44     printf(##x);                                \
   45 } while (0)
   46 #else
   47 #define AGP_DPF(x...) do {} while (0)
   48 #endif
   49 
   50 #include "agp_if.h"
   51 
   52 /*
   53  * Data structure to describe an AGP memory allocation.
   54  */
   55 TAILQ_HEAD(agp_memory_list, agp_memory);
   56 struct agp_memory {
   57         TAILQ_ENTRY(agp_memory) am_link;        /* wiring for the tailq */
   58         int             am_id;                  /* unique id for block */
   59         vm_size_t       am_size;                /* number of bytes allocated */
   60         int             am_type;                /* chipset specific type */
   61         struct vm_object *am_obj;               /* VM object owning pages */
   62         vm_offset_t     am_physical;            /* bogus hack for i810 */
   63         vm_offset_t     am_offset;              /* page offset if bound */
   64         int             am_is_bound;            /* non-zero if bound */
   65 };
   66 
   67 /*
   68  * All chipset drivers must have this at the start of their softc.
   69  */
   70 struct agp_softc {
   71         struct resource         *as_aperture;   /* location of aperture */
   72         int                     as_aperture_rid;
   73         u_int32_t               as_maxmem;      /* allocation upper bound */
   74         u_int32_t               as_allocated;   /* amount allocated */
   75         enum agp_acquire_state  as_state;
   76         struct agp_memory_list  as_memory;      /* list of allocated memory */
   77         int                     as_nextid;      /* next memory block id */
   78         int                     as_isopen;      /* user device is open */
   79         struct cdev *as_devnode;        /* from make_dev */
   80         struct mtx              as_lock;        /* lock for access to GATT */
   81 };
   82 
   83 struct agp_gatt {
   84         u_int32_t       ag_entries;
   85         u_int32_t      *ag_virtual;
   86         vm_offset_t     ag_physical;
   87 };
   88 
   89 void                    agp_flush_cache(void);
   90 u_int8_t                agp_find_caps(device_t dev);
   91 struct agp_gatt        *agp_alloc_gatt(device_t dev);
   92 void                    agp_set_aperture_resource(device_t dev, int rid);
   93 void                    agp_free_cdev(device_t dev);
   94 void                    agp_free_gatt(struct agp_gatt *gatt);
   95 void                    agp_free_res(device_t dev);
   96 int                     agp_generic_attach(device_t dev);
   97 int                     agp_generic_detach(device_t dev);
   98 int                     agp_generic_get_aperture(device_t dev);
   99 int                     agp_generic_set_aperture(device_t dev,
  100                                                  u_int32_t aperture);
  101 int                     agp_generic_enable(device_t dev, u_int32_t mode);
  102 struct agp_memory      *agp_generic_alloc_memory(device_t dev, int type,
  103                                                  vm_size_t size);
  104 int                     agp_generic_free_memory(device_t dev,
  105                                                 struct agp_memory *mem);
  106 int                     agp_generic_bind_memory(device_t dev,
  107                                                 struct agp_memory *mem,
  108                                                 vm_offset_t offset);
  109 int                     agp_generic_unbind_memory(device_t dev,
  110                                                   struct agp_memory *mem);
  111 
  112 #endif /* !_PCI_AGPPRIV_H_ */

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