Add missing sbp.h to complete the firewire sync
[dragonfly.git] / sys / dev / agp / agp_sis.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_sis.c,v 1.1.2.1 2000/07/19 09:48:04 ru Exp $
f7841f3c 27 * $DragonFly: src/sys/dev/agp/agp_sis.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_sis_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_sis_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)) {
66 case 0x00011039:
67 return ("SiS 5591 host to AGP bridge");
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68 case 0x06481039:
69 return ("SiS 648 host to AGP bridge");
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70 };
71
72 if (pci_get_vendor(dev) == 0x1039)
73 return ("SIS Generic host to PCI bridge");
74
75 return NULL;
76}
77
78static int
79agp_sis_probe(device_t dev)
80{
81 const char *desc;
82
83 desc = agp_sis_match(dev);
84 if (desc) {
85 device_verbose(dev);
86 device_set_desc(dev, desc);
87 return 0;
88 }
89
90 return ENXIO;
91}
92
93static int
94agp_sis_attach(device_t dev)
95{
96 struct agp_sis_softc *sc = device_get_softc(dev);
97 struct agp_gatt *gatt;
98 int error;
99
100 error = agp_generic_attach(dev);
101 if (error)
102 return error;
103
104 sc->initial_aperture = AGP_GET_APERTURE(dev);
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105 if (sc->initial_aperture == 0) {
106 device_printf(dev, "bad initial aperture size, disabling\n");
107 return ENXIO;
108 }
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109
110 for (;;) {
111 gatt = agp_alloc_gatt(dev);
112 if (gatt)
113 break;
114
115 /*
116 * Probably contigmalloc failure. Try reducing the
117 * aperture so that the gatt size reduces.
118 */
119 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) {
120 agp_generic_detach(dev);
121 return ENOMEM;
122 }
123 }
124 sc->gatt = gatt;
125
126 /* Install the gatt. */
127 pci_write_config(dev, AGP_SIS_ATTBASE, gatt->ag_physical, 4);
128
129 /* Enable the aperture. */
130 pci_write_config(dev, AGP_SIS_WINCTRL,
131 pci_read_config(dev, AGP_SIS_WINCTRL, 1) | 3, 1);
132
133 /*
134 * Enable the TLB and make it automatically invalidate entries
135 * when the GATT is written.
136 */
137 pci_write_config(dev, AGP_SIS_TLBCTRL, 0x05, 1);
138
139 return 0;
140}
141
142static int
143agp_sis_detach(device_t dev)
144{
145 struct agp_sis_softc *sc = device_get_softc(dev);
146 int error;
147
148 error = agp_generic_detach(dev);
149 if (error)
150 return error;
151
152 /* Disable the aperture.. */
153 pci_write_config(dev, AGP_SIS_WINCTRL,
154 pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~3, 1);
155
156 /* and the TLB. */
157 pci_write_config(dev, AGP_SIS_TLBCTRL, 0, 1);
158
159 /* Put the aperture back the way it started. */
160 AGP_SET_APERTURE(dev, sc->initial_aperture);
161
162 agp_free_gatt(sc->gatt);
163 return 0;
164}
165
166static u_int32_t
167agp_sis_get_aperture(device_t dev)
168{
169 int gws;
170
171 /*
172 * The aperture size is equal to 4M<<gws.
173 */
174 gws = (pci_read_config(dev, AGP_SIS_WINCTRL, 1) & 0x70) >> 4;
175 return (4*1024*1024) << gws;
176}
177
178static int
179agp_sis_set_aperture(device_t dev, u_int32_t aperture)
180{
181 int gws;
182
183 /*
184 * Check for a power of two and make sure its within the
185 * programmable range.
186 */
187 if (aperture & (aperture - 1)
188 || aperture < 4*1024*1024
189 || aperture > 256*1024*1024)
190 return EINVAL;
191
192 gws = ffs(aperture / 4*1024*1024) - 1;
193
194 pci_write_config(dev, AGP_SIS_WINCTRL,
195 ((pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~0x70)
196 | gws << 4), 1);
197
198 return 0;
199}
200
201static int
202agp_sis_bind_page(device_t dev, int offset, vm_offset_t physical)
203{
204 struct agp_sis_softc *sc = device_get_softc(dev);
205
206 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
207 return EINVAL;
208
209 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
210 return 0;
211}
212
213static int
214agp_sis_unbind_page(device_t dev, int offset)
215{
216 struct agp_sis_softc *sc = device_get_softc(dev);
217
218 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
219 return EINVAL;
220
221 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
222 return 0;
223}
224
225static void
226agp_sis_flush_tlb(device_t dev)
227{
228 pci_write_config(dev, AGP_SIS_TLBFLUSH, 0x02, 1);
229}
230
231static device_method_t agp_sis_methods[] = {
232 /* Device interface */
233 DEVMETHOD(device_probe, agp_sis_probe),
234 DEVMETHOD(device_attach, agp_sis_attach),
235 DEVMETHOD(device_detach, agp_sis_detach),
236 DEVMETHOD(device_shutdown, bus_generic_shutdown),
237 DEVMETHOD(device_suspend, bus_generic_suspend),
238 DEVMETHOD(device_resume, bus_generic_resume),
239
240 /* AGP interface */
241 DEVMETHOD(agp_get_aperture, agp_sis_get_aperture),
242 DEVMETHOD(agp_set_aperture, agp_sis_set_aperture),
243 DEVMETHOD(agp_bind_page, agp_sis_bind_page),
244 DEVMETHOD(agp_unbind_page, agp_sis_unbind_page),
245 DEVMETHOD(agp_flush_tlb, agp_sis_flush_tlb),
246 DEVMETHOD(agp_enable, agp_generic_enable),
247 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
248 DEVMETHOD(agp_free_memory, agp_generic_free_memory),
249 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
250 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
251
252 { 0, 0 }
253};
254
255static driver_t agp_sis_driver = {
256 "agp",
257 agp_sis_methods,
258 sizeof(struct agp_sis_softc),
259};
260
261static devclass_t agp_devclass;
262
263DRIVER_MODULE(agp_sis, pci, agp_sis_driver, agp_devclass, 0, 0);
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264MODULE_DEPEND(agp_sis, agp, 1, 1, 1);
265MODULE_DEPEND(agp_sis, pci, 1, 1, 1);