Add missing sbp.h to complete the firewire sync
[dragonfly.git] / sys / dev / agp / agp_via.c
CommitLineData
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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: src/sys/pci/agp_via.c,v 1.1.2.2 2001/10/04 09:53:04 ru Exp $
f7841f3c 27 * $DragonFly: src/sys/dev/agp/agp_via.c,v 1.4 2003/12/09 19:40:56 dillon Exp $
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28 */
29
30#include "opt_bus.h"
31#include "opt_pci.h"
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/malloc.h>
36#include <sys/kernel.h>
37#include <sys/bus.h>
38#include <sys/lock.h>
39
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40#include <bus/pci/pcivar.h>
41#include <bus/pci/pcireg.h>
42#include "agppriv.h"
43#include "agpreg.h"
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44
45#include <vm/vm.h>
46#include <vm/vm_object.h>
47#include <vm/pmap.h>
48
49struct agp_via_softc {
50 struct agp_softc agp;
51 u_int32_t initial_aperture; /* aperture size at startup */
52 struct agp_gatt *gatt;
53};
54
55static const char*
56agp_via_match(device_t dev)
57{
58 if (pci_get_class(dev) != PCIC_BRIDGE
59 || pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
60 return NULL;
61
62 if (agp_find_caps(dev) == 0)
63 return NULL;
64
65 switch (pci_get_devid(dev)) {
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66 case 0x03051106:
67 return ("VIA 82C8363 (Apollo KT133A) host to PCI bridge");
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68 case 0x05011106:
69 return ("VIA 8501 (Apollo MVP4) host to PCI bridge");
70 case 0x05971106:
71 return ("VIA 82C597 (Apollo VP3) host to PCI bridge");
72 case 0x05981106:
73 return ("VIA 82C598 (Apollo MVP3) host to PCI bridge");
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74 case 0x06051106:
75 return ("VIA 82C694X (Apollo Pro 133A) host to PCI bridge");
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76 case 0x06911106:
77 return ("VIA 82C691 (Apollo Pro) host to PCI bridge");
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78 };
79
80 if (pci_get_vendor(dev) == 0x1106)
81 return ("VIA Generic host to PCI bridge");
82
83 return NULL;
84}
85
86static int
87agp_via_probe(device_t dev)
88{
89 const char *desc;
90
91 desc = agp_via_match(dev);
92 if (desc) {
93 device_verbose(dev);
94 device_set_desc(dev, desc);
95 return 0;
96 }
97
98 return ENXIO;
99}
100
101static int
102agp_via_attach(device_t dev)
103{
104 struct agp_via_softc *sc = device_get_softc(dev);
105 struct agp_gatt *gatt;
106 int error;
107
108 error = agp_generic_attach(dev);
109 if (error)
110 return error;
111
112 sc->initial_aperture = AGP_GET_APERTURE(dev);
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113 if (sc->initial_aperture == 0) {
114 device_printf(dev, "bad initial aperture size, disabling\n");
115 return ENXIO;
116 }
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117
118 for (;;) {
119 gatt = agp_alloc_gatt(dev);
120 if (gatt)
121 break;
122
123 /*
124 * Probably contigmalloc failure. Try reducing the
125 * aperture so that the gatt size reduces.
126 */
127 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) {
128 agp_generic_detach(dev);
129 return ENOMEM;
130 }
131 }
132 sc->gatt = gatt;
133
134 /* Install the gatt. */
135 pci_write_config(dev, AGP_VIA_ATTBASE, gatt->ag_physical | 3, 4);
136
137 /* Enable the aperture. */
138 pci_write_config(dev, AGP_VIA_GARTCTRL, 0x0f, 4);
139
140 return 0;
141}
142
143static int
144agp_via_detach(device_t dev)
145{
146 struct agp_via_softc *sc = device_get_softc(dev);
147 int error;
148
149 error = agp_generic_detach(dev);
150 if (error)
151 return error;
152
153 pci_write_config(dev, AGP_VIA_GARTCTRL, 0, 4);
154 pci_write_config(dev, AGP_VIA_ATTBASE, 0, 4);
155 AGP_SET_APERTURE(dev, sc->initial_aperture);
156 agp_free_gatt(sc->gatt);
157
158 return 0;
159}
160
161static u_int32_t
162agp_via_get_aperture(device_t dev)
163{
164 u_int32_t apsize;
165
166 apsize = pci_read_config(dev, AGP_VIA_APSIZE, 1) & 0x1f;
167
168 /*
169 * The size is determined by the number of low bits of
170 * register APBASE which are forced to zero. The low 20 bits
171 * are always forced to zero and each zero bit in the apsize
172 * field just read forces the corresponding bit in the 27:20
173 * to be zero. We calculate the aperture size accordingly.
174 */
175 return (((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1;
176}
177
178static int
179agp_via_set_aperture(device_t dev, u_int32_t aperture)
180{
181 u_int32_t apsize;
182
183 /*
184 * Reverse the magic from get_aperture.
185 */
186 apsize = ((aperture - 1) >> 20) ^ 0xff;
187
188 /*
189 * Double check for sanity.
190 */
191 if ((((apsize ^ 0xff) << 20) | ((1 << 20) - 1)) + 1 != aperture)
192 return EINVAL;
193
194 pci_write_config(dev, AGP_VIA_APSIZE, apsize, 1);
195
196 return 0;
197}
198
199static int
200agp_via_bind_page(device_t dev, int offset, vm_offset_t physical)
201{
202 struct agp_via_softc *sc = device_get_softc(dev);
203
204 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
205 return EINVAL;
206
207 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
208 return 0;
209}
210
211static int
212agp_via_unbind_page(device_t dev, int offset)
213{
214 struct agp_via_softc *sc = device_get_softc(dev);
215
216 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
217 return EINVAL;
218
219 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
220 return 0;
221}
222
223static void
224agp_via_flush_tlb(device_t dev)
225{
226 pci_write_config(dev, AGP_VIA_GARTCTRL, 0x8f, 4);
227 pci_write_config(dev, AGP_VIA_GARTCTRL, 0x0f, 4);
228}
229
230static device_method_t agp_via_methods[] = {
231 /* Device interface */
232 DEVMETHOD(device_probe, agp_via_probe),
233 DEVMETHOD(device_attach, agp_via_attach),
234 DEVMETHOD(device_detach, agp_via_detach),
235 DEVMETHOD(device_shutdown, bus_generic_shutdown),
236 DEVMETHOD(device_suspend, bus_generic_suspend),
237 DEVMETHOD(device_resume, bus_generic_resume),
238
239 /* AGP interface */
240 DEVMETHOD(agp_get_aperture, agp_via_get_aperture),
241 DEVMETHOD(agp_set_aperture, agp_via_set_aperture),
242 DEVMETHOD(agp_bind_page, agp_via_bind_page),
243 DEVMETHOD(agp_unbind_page, agp_via_unbind_page),
244 DEVMETHOD(agp_flush_tlb, agp_via_flush_tlb),
245 DEVMETHOD(agp_enable, agp_generic_enable),
246 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
247 DEVMETHOD(agp_free_memory, agp_generic_free_memory),
248 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
249 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
250
251 { 0, 0 }
252};
253
254static driver_t agp_via_driver = {
255 "agp",
256 agp_via_methods,
257 sizeof(struct agp_via_softc),
258};
259
260static devclass_t agp_devclass;
261
262DRIVER_MODULE(agp_via, pci, agp_via_driver, agp_devclass, 0, 0);
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263MODULE_DEPEND(agp_via, agp, 1, 1, 1);
264MODULE_DEPEND(agp_via, pci, 1, 1, 1);