FreeBSD/Linux Kernel Cross Reference
sys/pci/agp_amd64.c
1 /*-
2 * Copyright (c) 2004 Jung-uk Kim
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/6.0/sys/pci/agp_amd64.c 144809 2005-04-08 18:04:39Z obrien $");
29
30 #include "opt_bus.h"
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/malloc.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
37 #include <sys/bus.h>
38 #include <sys/lock.h>
39 #include <sys/mutex.h>
40 #include <sys/proc.h>
41
42 #include <dev/pci/pcivar.h>
43 #include <dev/pci/pcireg.h>
44 #include <pci/agppriv.h>
45 #include <pci/agpreg.h>
46
47 #include <vm/vm.h>
48 #include <vm/vm_object.h>
49 #include <vm/pmap.h>
50 #include <machine/bus.h>
51 #include <machine/resource.h>
52 #include <sys/rman.h>
53
54 /* XXX */
55 extern void pci_cfgregwrite(int, int, int, int, uint32_t, int);
56 extern uint32_t pci_cfgregread(int, int, int, int, int);
57
58 MALLOC_DECLARE(M_AGP);
59
60 #define AMD64_MAX_MCTRL 8
61
62 struct agp_amd64_softc {
63 struct agp_softc agp;
64 uint32_t initial_aperture; /* aperture size at startup */
65 struct agp_gatt *gatt;
66 int mctrl[AMD64_MAX_MCTRL];
67 int n_mctrl;
68 };
69
70 static const char*
71 agp_amd64_match(device_t dev)
72 {
73 if (pci_get_class(dev) != PCIC_BRIDGE
74 || pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
75 return NULL;
76
77 if (agp_find_caps(dev) == 0)
78 return NULL;
79
80 switch (pci_get_devid(dev)) {
81 case 0x74541022:
82 return ("AMD 8151 AGP graphics tunnel");
83 case 0x07551039:
84 return ("SiS 755 host to AGP bridge");
85 case 0x00d110de:
86 return ("NVIDIA nForce3 AGP Controller");
87 case 0x00e110de:
88 return ("NVIDIA nForce3-250 AGP Controller");
89 case 0x02041106:
90 return ("VIA 8380 host to PCI bridge");
91 case 0x02821106:
92 return ("VIA K8T800Pro host to PCI bridge");
93 case 0x31881106:
94 return ("VIA 8385 host to PCI bridge");
95 };
96
97 return NULL;
98 }
99
100 static int
101 agp_amd64_probe(device_t dev)
102 {
103 const char *desc;
104
105 if (resource_disabled("agp", device_get_unit(dev)))
106 return ENXIO;
107 if ((desc = agp_amd64_match(dev))) {
108 device_verbose(dev);
109 device_set_desc(dev, desc);
110 return BUS_PROBE_DEFAULT;
111 }
112
113 return ENXIO;
114 }
115
116 static int
117 agp_amd64_attach(device_t dev)
118 {
119 struct agp_amd64_softc *sc = device_get_softc(dev);
120 struct agp_gatt *gatt;
121 int i, n, error;
122
123 for (i = 0, n = 0; i < PCI_SLOTMAX && n < AMD64_MAX_MCTRL; i++)
124 if (pci_cfgregread(0, i, 3, 0, 4) == 0x11031022) {
125 sc->mctrl[n] = i;
126 n++;
127 }
128
129 if (n == 0)
130 return ENXIO;
131
132 sc->n_mctrl = n;
133
134 if (bootverbose)
135 printf("AMD64: %d Misc. Control unit(s) found.\n", sc->n_mctrl);
136
137 if ((error = agp_generic_attach(dev)))
138 return error;
139
140 sc->initial_aperture = AGP_GET_APERTURE(dev);
141
142 for (;;) {
143 gatt = agp_alloc_gatt(dev);
144 if (gatt)
145 break;
146
147 /*
148 * Probably contigmalloc failure. Try reducing the
149 * aperture so that the gatt size reduces.
150 */
151 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) {
152 agp_generic_detach(dev);
153 return ENOMEM;
154 }
155 }
156 sc->gatt = gatt;
157
158 /* Install the gatt and enable aperture. */
159 for (i = 0; i < sc->n_mctrl; i++) {
160 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_ATTBASE,
161 (uint32_t)(gatt->ag_physical >> 8) & AGP_AMD64_ATTBASE_MASK,
162 4);
163 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL,
164 (pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 4) |
165 AGP_AMD64_APCTRL_GARTEN) &
166 ~(AGP_AMD64_APCTRL_DISGARTCPU | AGP_AMD64_APCTRL_DISGARTIO),
167 4);
168 }
169
170 agp_flush_cache();
171
172 return 0;
173 }
174
175 static int
176 agp_amd64_detach(device_t dev)
177 {
178 struct agp_amd64_softc *sc = device_get_softc(dev);
179 int i, error;
180
181 if ((error = agp_generic_detach(dev)))
182 return error;
183
184 for (i = 0; i < sc->n_mctrl; i++)
185 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL,
186 pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 4) &
187 ~AGP_AMD64_APCTRL_GARTEN, 4);
188
189 AGP_SET_APERTURE(dev, sc->initial_aperture);
190 agp_free_gatt(sc->gatt);
191
192 return 0;
193 }
194
195 static uint32_t agp_amd64_table[] = {
196 0x02000000, /* 32 MB */
197 0x04000000, /* 64 MB */
198 0x08000000, /* 128 MB */
199 0x10000000, /* 256 MB */
200 0x20000000, /* 512 MB */
201 0x40000000, /* 1024 MB */
202 0x80000000, /* 2048 MB */
203 };
204
205 #define AGP_AMD64_TABLE_SIZE \
206 (sizeof(agp_amd64_table) / sizeof(agp_amd64_table[0]))
207
208 static uint32_t
209 agp_amd64_get_aperture(device_t dev)
210 {
211 struct agp_amd64_softc *sc = device_get_softc(dev);
212 uint32_t i;
213
214 i = (pci_cfgregread(0, sc->mctrl[0], 3, AGP_AMD64_APCTRL, 4) &
215 AGP_AMD64_APCTRL_SIZE_MASK) >> 1;
216
217 if (i >= AGP_AMD64_TABLE_SIZE)
218 return 0;
219
220 return (agp_amd64_table[i]);
221 }
222
223 static int
224 agp_amd64_set_aperture(device_t dev, uint32_t aperture)
225 {
226 struct agp_amd64_softc *sc = device_get_softc(dev);
227 uint32_t i;
228 int j;
229
230 for (i = 0; i < AGP_AMD64_TABLE_SIZE; i++)
231 if (agp_amd64_table[i] == aperture)
232 break;
233 if (i == AGP_AMD64_TABLE_SIZE)
234 return EINVAL;
235
236 for (j = 0; j < sc->n_mctrl; j++)
237 pci_cfgregwrite(0, sc->mctrl[j], 3, AGP_AMD64_APCTRL,
238 (pci_cfgregread(0, sc->mctrl[j], 3, AGP_AMD64_APCTRL, 4) &
239 ~(AGP_AMD64_APCTRL_SIZE_MASK)) | (i << 1), 4);
240
241 return 0;
242 }
243
244 static int
245 agp_amd64_bind_page(device_t dev, int offset, vm_offset_t physical)
246 {
247 struct agp_amd64_softc *sc = device_get_softc(dev);
248
249 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
250 return EINVAL;
251
252 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
253 return 0;
254 }
255
256 static int
257 agp_amd64_unbind_page(device_t dev, int offset)
258 {
259 struct agp_amd64_softc *sc = device_get_softc(dev);
260
261 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
262 return EINVAL;
263
264 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
265 return 0;
266 }
267
268 static void
269 agp_amd64_flush_tlb(device_t dev)
270 {
271 struct agp_amd64_softc *sc = device_get_softc(dev);
272 int i;
273
274 for (i = 0; i < sc->n_mctrl; i++)
275 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_CACHECTRL,
276 pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_CACHECTRL, 4) |
277 AGP_AMD64_CACHECTRL_INVGART, 4);
278 }
279
280 static device_method_t agp_amd64_methods[] = {
281 /* Device interface */
282 DEVMETHOD(device_probe, agp_amd64_probe),
283 DEVMETHOD(device_attach, agp_amd64_attach),
284 DEVMETHOD(device_detach, agp_amd64_detach),
285 DEVMETHOD(device_shutdown, bus_generic_shutdown),
286 DEVMETHOD(device_suspend, bus_generic_suspend),
287 DEVMETHOD(device_resume, bus_generic_resume),
288
289 /* AGP interface */
290 DEVMETHOD(agp_get_aperture, agp_amd64_get_aperture),
291 DEVMETHOD(agp_set_aperture, agp_amd64_set_aperture),
292 DEVMETHOD(agp_bind_page, agp_amd64_bind_page),
293 DEVMETHOD(agp_unbind_page, agp_amd64_unbind_page),
294 DEVMETHOD(agp_flush_tlb, agp_amd64_flush_tlb),
295 DEVMETHOD(agp_enable, agp_generic_enable),
296 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
297 DEVMETHOD(agp_free_memory, agp_generic_free_memory),
298 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
299 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
300
301 { 0, 0 }
302 };
303
304 static driver_t agp_amd64_driver = {
305 "agp",
306 agp_amd64_methods,
307 sizeof(struct agp_amd64_softc),
308 };
309
310 static devclass_t agp_devclass;
311
312 DRIVER_MODULE(agp_amd64, pci, agp_amd64_driver, agp_devclass, 0, 0);
313 MODULE_DEPEND(agp_amd64, agp, 1, 1, 1);
314 MODULE_DEPEND(agp_amd64, pci, 1, 1, 1);
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