sys/dev/agp/agppriv.h

   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: src/sys/pci/agppriv.h,v 1.3.2.1 2000/07/19 09:48:04 ru Exp $
  27  *      $DragonFly: src/sys/dev/agp/agppriv.h,v 1.5 2006/12/23 00:26:15 swildner Exp $
  28  */
  29
  30 #ifndef _PCI_AGPPRIV_H_
  31 #define _PCI_AGPPRIV_H_
  32
  33 /*
  34  * This file *must not* be included by code outside the agp driver itself.
  35  */
  36
  37 #include <sys/agpio.h>
  38 #include "agpvar.h"
  39
  40 #define AGP_DEBUGxx
  41
  42 #ifdef AGP_DEBUG
  43 #define AGP_DPF(x...) do {                      \
  44     kprintf("agp: ");                           \
  45     kprintf(##x);                               \
  46 } while (0)
  47 #else
  48 #define AGP_DPF(x...) do {} while (0)
  49 #endif
  50
  51 #include "agp_if.h"
  52
  53 /*
  54  * Data structure to describe an AGP memory allocation.
  55  */
  56 TAILQ_HEAD(agp_memory_list, agp_memory);
  57 struct agp_memory {
  58         TAILQ_ENTRY(agp_memory) am_link;        /* wiring for the tailq */
  59         int             am_id;                  /* unique id for block */
  60         vm_size_t       am_size;                /* number of bytes allocated */
  61         int             am_type;                /* chipset specific type */
  62         struct vm_object *am_obj;               /* VM object owning pages */
  63         vm_offset_t     am_physical;            /* bogus hack for i810 */
  64         vm_offset_t     am_offset;              /* page offset if bound */
  65         int             am_is_bound;            /* non-zero if bound */
  66 };
  67
  68 /*
  69  * All chipset drivers must have this at the start of their softc.
  70  */
  71 struct agp_softc {
  72         struct resource         *as_aperture;   /* location of aperture */
  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 lock             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 void                    agp_flush_cache(void);
  89 u_int8_t                agp_find_caps(device_t dev);
  90 struct agp_gatt        *agp_alloc_gatt(device_t dev);
  91 void                    agp_free_gatt(struct agp_gatt *gatt);
  92 int                     agp_generic_attach(device_t dev);
  93 int                     agp_generic_detach(device_t dev);
  94 int                     agp_generic_enable(device_t dev, u_int32_t mode);
  95 struct agp_memory      *agp_generic_alloc_memory(device_t dev, int type,
  96                                                  vm_size_t size);
  97 int                     agp_generic_free_memory(device_t dev,
  98                                                 struct agp_memory *mem);
  99 int                     agp_generic_bind_memory(device_t dev,
 100                                                 struct agp_memory *mem,
 101                                                 vm_offset_t offset);
 102 int                     agp_generic_unbind_memory(device_t dev,
 103                                                   struct agp_memory *mem);
 104
 105 #endif /* !_PCI_AGPPRIV_H_ */