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_ */ 111