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  * 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: releng/9.2/sys/dev/agp/agppriv.h 236926 2012-06-11 21:33:02Z kib $
   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 <dev/agp/agpvar.h>
   38 
   39 #ifdef AGP_DEBUG
   40 #define AGP_DPF(fmt, ...) do {                          \
   41     printf("agp: " fmt, ##__VA_ARGS__);                 \
   42 } while (0)
   43 #else
   44 #define AGP_DPF(fmt, ...) do {} while (0)
   45 #endif
   46 
   47 #include "agp_if.h"
   48 
   49 /*
   50  * Data structure to describe an AGP memory allocation.
   51  */
   52 TAILQ_HEAD(agp_memory_list, agp_memory);
   53 struct agp_memory {
   54         TAILQ_ENTRY(agp_memory) am_link;        /* wiring for the tailq */
   55         int             am_id;                  /* unique id for block */
   56         vm_size_t       am_size;                /* number of bytes allocated */
   57         int             am_type;                /* chipset specific type */
   58         struct vm_object *am_obj;               /* VM object owning pages */
   59         vm_offset_t     am_physical;            /* bogus hack for i810 */
   60         vm_offset_t     am_offset;              /* page offset if bound */
   61         int             am_is_bound;            /* non-zero if bound */
   62 };
   63 
   64 /*
   65  * All chipset drivers must have this at the start of their softc.
   66  */
   67 struct agp_softc {
   68         struct resource         *as_aperture;   /* location of aperture */
   69         int                     as_aperture_rid;
   70         u_int32_t               as_maxmem;      /* allocation upper bound */
   71         u_int32_t               as_allocated;   /* amount allocated */
   72         enum agp_acquire_state  as_state;
   73         struct agp_memory_list  as_memory;      /* list of allocated memory */
   74         int                     as_nextid;      /* next memory block id */
   75         int                     as_isopen;      /* user device is open */
   76         struct cdev             *as_devnode;    /* from make_dev */
   77         struct mtx              as_lock;        /* lock for access to GATT */
   78 };
   79 
   80 struct agp_gatt {
   81         u_int32_t       ag_entries;
   82         u_int32_t      *ag_virtual;
   83         vm_offset_t     ag_physical;
   84 };
   85 
   86 void                    agp_flush_cache(void);
   87 u_int8_t                agp_find_caps(device_t dev);
   88 struct agp_gatt        *agp_alloc_gatt(device_t dev);
   89 void                    agp_set_aperture_resource(device_t dev, int rid);
   90 void                    agp_free_cdev(device_t dev);
   91 void                    agp_free_gatt(struct agp_gatt *gatt);
   92 void                    agp_free_res(device_t dev);
   93 int                     agp_generic_attach(device_t dev);
   94 int                     agp_generic_detach(device_t dev);
   95 u_int32_t               agp_generic_get_aperture(device_t dev);
   96 int                     agp_generic_set_aperture(device_t dev,
   97                                                  u_int32_t aperture);
   98 int                     agp_generic_enable(device_t dev, u_int32_t mode);
   99 struct agp_memory      *agp_generic_alloc_memory(device_t dev, int type,
  100                                                  vm_size_t size);
  101 int                     agp_generic_free_memory(device_t dev,
  102                                                 struct agp_memory *mem);
  103 int                     agp_generic_bind_memory(device_t dev,
  104                                                 struct agp_memory *mem,
  105                                                 vm_offset_t offset);
  106 int                     agp_generic_unbind_memory(device_t dev,
  107                                                   struct agp_memory *mem);
  108 
  109 #endif /* !_PCI_AGPPRIV_H_ */

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