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/dev/agp/agppriv.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2000 Doug Rabson
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  *      $FreeBSD$
   29  */
   30 
   31 #ifndef _PCI_AGPPRIV_H_
   32 #define _PCI_AGPPRIV_H_
   33 
   34 /*
   35  * This file *must not* be included by code outside the agp driver itself.
   36  */
   37 
   38 #include <sys/agpio.h>
   39 #include <dev/agp/agpvar.h>
   40 
   41 #ifdef AGP_DEBUG
   42 #define AGP_DPF(fmt, ...) do {                          \
   43     printf("agp: " fmt, ##__VA_ARGS__);                 \
   44 } while (0)
   45 #else
   46 #define AGP_DPF(fmt, ...) do {} while (0)
   47 #endif
   48 
   49 #include "agp_if.h"
   50 
   51 /*
   52  * Data structure to describe an AGP memory allocation.
   53  */
   54 TAILQ_HEAD(agp_memory_list, agp_memory);
   55 struct agp_memory {
   56         TAILQ_ENTRY(agp_memory) am_link;        /* wiring for the tailq */
   57         int             am_id;                  /* unique id for block */
   58         vm_size_t       am_size;                /* number of bytes allocated */
   59         int             am_type;                /* chipset specific type */
   60         struct vm_object *am_obj;               /* VM object owning pages */
   61         vm_offset_t     am_physical;            /* bogus hack for i810 */
   62         vm_offset_t     am_offset;              /* page offset if bound */
   63         int             am_is_bound;            /* non-zero if bound */
   64 };
   65 
   66 /*
   67  * All chipset drivers must have this at the start of their softc.
   68  */
   69 struct agp_softc {
   70         struct resource         *as_aperture;   /* location of aperture */
   71         int                     as_aperture_rid;
   72         u_int32_t               as_maxmem;      /* allocation upper bound */
   73         u_int32_t               as_allocated;   /* amount allocated */
   74         enum agp_acquire_state  as_state;
   75         struct agp_memory_list  as_memory;      /* list of allocated memory */
   76         int                     as_nextid;      /* next memory block id */
   77         int                     as_isopen;      /* user device is open */
   78         struct cdev             *as_devnode;    /* from make_dev */
   79         struct mtx              as_lock;        /* lock for access to GATT */
   80 };
   81 
   82 struct agp_gatt {
   83         u_int32_t       ag_entries;
   84         u_int32_t      *ag_virtual;
   85         vm_offset_t     ag_physical;
   86 };
   87 
   88 u_int8_t                agp_find_caps(device_t dev);
   89 struct agp_gatt        *agp_alloc_gatt(device_t dev);
   90 void                    agp_set_aperture_resource(device_t dev, int rid);
   91 void                    agp_free_cdev(device_t dev);
   92 void                    agp_free_gatt(struct agp_gatt *gatt);
   93 void                    agp_free_res(device_t dev);
   94 int                     agp_generic_attach(device_t dev);
   95 int                     agp_generic_detach(device_t dev);
   96 u_int32_t               agp_generic_get_aperture(device_t dev);
   97 int                     agp_generic_set_aperture(device_t dev,
   98                                                  u_int32_t aperture);
   99 int                     agp_generic_enable(device_t dev, u_int32_t mode);
  100 struct agp_memory      *agp_generic_alloc_memory(device_t dev, int type,
  101                                                  vm_size_t size);
  102 int                     agp_generic_free_memory(device_t dev,
  103                                                 struct agp_memory *mem);
  104 int                     agp_generic_bind_memory(device_t dev,
  105                                                 struct agp_memory *mem,
  106                                                 vm_offset_t offset);
  107 int                     agp_generic_unbind_memory(device_t dev,
  108                                                   struct agp_memory *mem);
  109 
  110 #endif /* !_PCI_AGPPRIV_H_ */

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