Add missing sbp.h to complete the firewire sync
[dragonfly.git] / sys / dev / agp / agp_ali.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_ali.c,v 1.1.2.1 2000/07/19 09:48:04 ru Exp $
f7841f3c 27 * $DragonFly: src/sys/dev/agp/agp_ali.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_ali_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_ali_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 0x154110b9:
67 return ("Ali M1541 host to AGP bridge");
68 };
69
70 if (pci_get_vendor(dev) == 0x10b9)
71 return ("Ali Generic host to PCI bridge");
72
73 return NULL;
74}
75
76static int
77agp_ali_probe(device_t dev)
78{
79 const char *desc;
80
81 desc = agp_ali_match(dev);
82 if (desc) {
83 device_verbose(dev);
84 device_set_desc(dev, desc);
85 return 0;
86 }
87
88 return ENXIO;
89}
90
91static int
92agp_ali_attach(device_t dev)
93{
94 struct agp_ali_softc *sc = device_get_softc(dev);
95 struct agp_gatt *gatt;
96 int error;
97
98 error = agp_generic_attach(dev);
99 if (error)
100 return error;
101
102 sc->initial_aperture = AGP_GET_APERTURE(dev);
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103 if (sc->initial_aperture == 0) {
104 device_printf(dev, "bad initial aperture size, disabling\n");
105 return ENXIO;
106 }
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107
108 for (;;) {
109 gatt = agp_alloc_gatt(dev);
110 if (gatt)
111 break;
112
113 /*
114 * Probably contigmalloc failure. Try reducing the
115 * aperture so that the gatt size reduces.
116 */
117 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) {
118 agp_generic_detach(dev);
119 return ENOMEM;
120 }
121 }
122 sc->gatt = gatt;
123
124 /* Install the gatt. */
125 pci_write_config(dev, AGP_ALI_ATTBASE,
126 (gatt->ag_physical
127 | (pci_read_config(dev, AGP_ALI_ATTBASE, 4) & 0xff)),
128 4);
129
130 /* Enable the TLB. */
131 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x10, 1);
132
133 return 0;
134}
135
136static int
137agp_ali_detach(device_t dev)
138{
139 struct agp_ali_softc *sc = device_get_softc(dev);
140 int error;
141
142 error = agp_generic_detach(dev);
143 if (error)
144 return error;
145
146 /* Disable the TLB.. */
147 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x90, 1);
148
149 /* Put the aperture back the way it started. */
150 AGP_SET_APERTURE(dev, sc->initial_aperture);
151 pci_write_config(dev, AGP_ALI_ATTBASE,
152 pci_read_config(dev, AGP_ALI_ATTBASE, 4) & 0xff,
153 4);
154
155 agp_free_gatt(sc->gatt);
156 return 0;
157}
158
159#define M 1024*1024
160
161static u_int32_t agp_ali_table[] = {
162 0, /* 0 - invalid */
163 1, /* 1 - invalid */
164 2, /* 2 - invalid */
165 4*M, /* 3 - invalid */
166 8*M, /* 4 - invalid */
167 0, /* 5 - invalid */
168 16*M, /* 6 - invalid */
169 32*M, /* 7 - invalid */
170 64*M, /* 8 - invalid */
171 128*M, /* 9 - invalid */
172 256*M, /* 10 - invalid */
173};
174#define agp_ali_table_size (sizeof(agp_ali_table) / sizeof(agp_ali_table[0]))
175
176static u_int32_t
177agp_ali_get_aperture(device_t dev)
178{
179 /*
180 * The aperture size is derived from the low bits of attbase.
181 * I'm not sure this is correct..
182 */
183 int i = pci_read_config(dev, AGP_ALI_ATTBASE, 4) & 0xff;
184 if (i >= agp_ali_table_size)
185 return 0;
186 return agp_ali_table[i];
187}
188
189static int
190agp_ali_set_aperture(device_t dev, u_int32_t aperture)
191{
192 int i;
193
194 for (i = 0; i < agp_ali_table_size; i++)
195 if (agp_ali_table[i] == aperture)
196 break;
197 if (i == agp_ali_table_size)
198 return EINVAL;
199
200 pci_write_config(dev, AGP_ALI_ATTBASE,
201 ((pci_read_config(dev, AGP_ALI_ATTBASE, 4) & ~0xff)
202 | i), 4);
203 return 0;
204}
205
206static int
207agp_ali_bind_page(device_t dev, int offset, vm_offset_t physical)
208{
209 struct agp_ali_softc *sc = device_get_softc(dev);
210
211 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
212 return EINVAL;
213
214 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
215 return 0;
216}
217
218static int
219agp_ali_unbind_page(device_t dev, int offset)
220{
221 struct agp_ali_softc *sc = device_get_softc(dev);
222
223 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
224 return EINVAL;
225
226 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
227 return 0;
228}
229
230static void
231agp_ali_flush_tlb(device_t dev)
232{
233 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x90, 1);
234 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x10, 1);
235}
236
237static device_method_t agp_ali_methods[] = {
238 /* Device interface */
239 DEVMETHOD(device_probe, agp_ali_probe),
240 DEVMETHOD(device_attach, agp_ali_attach),
241 DEVMETHOD(device_detach, agp_ali_detach),
242 DEVMETHOD(device_shutdown, bus_generic_shutdown),
243 DEVMETHOD(device_suspend, bus_generic_suspend),
244 DEVMETHOD(device_resume, bus_generic_resume),
245
246 /* AGP interface */
247 DEVMETHOD(agp_get_aperture, agp_ali_get_aperture),
248 DEVMETHOD(agp_set_aperture, agp_ali_set_aperture),
249 DEVMETHOD(agp_bind_page, agp_ali_bind_page),
250 DEVMETHOD(agp_unbind_page, agp_ali_unbind_page),
251 DEVMETHOD(agp_flush_tlb, agp_ali_flush_tlb),
252 DEVMETHOD(agp_enable, agp_generic_enable),
253 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
254 DEVMETHOD(agp_free_memory, agp_generic_free_memory),
255 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
256 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
257
258 { 0, 0 }
259};
260
261static driver_t agp_ali_driver = {
262 "agp",
263 agp_ali_methods,
264 sizeof(struct agp_ali_softc),
265};
266
267static devclass_t agp_devclass;
268
269DRIVER_MODULE(agp_ali, pci, agp_ali_driver, agp_devclass, 0, 0);
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270MODULE_DEPEND(agp_ali, agp, 1, 1, 1);
271MODULE_DEPEND(agp_ali, pci, 1, 1, 1);