drm/i915: Use stop_machine()
[dragonfly.git] / sys / dev / agp / agp_sis.c
CommitLineData
984263bc
MD
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 *
aa31142a 26 * $FreeBSD: src/sys/dev/agp/agp_sis.c,v 1.22 2007/11/12 21:51:37 jhb Exp $
984263bc
MD
27 */
28
984263bc
MD
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/malloc.h>
32#include <sys/kernel.h>
33#include <sys/bus.h>
34#include <sys/lock.h>
35
1f2de5d4
MD
36#include <bus/pci/pcivar.h>
37#include <bus/pci/pcireg.h>
38#include "agppriv.h"
39#include "agpreg.h"
984263bc
MD
40
41#include <vm/vm.h>
42#include <vm/vm_object.h>
43#include <vm/pmap.h>
44
45struct agp_sis_softc {
46 struct agp_softc agp;
47 u_int32_t initial_aperture; /* aperture size at startup */
48 struct agp_gatt *gatt;
49};
50
51static const char*
52agp_sis_match(device_t dev)
53{
54 if (pci_get_class(dev) != PCIC_BRIDGE
55 || pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
56 return NULL;
57
58 if (agp_find_caps(dev) == 0)
59 return NULL;
60
61 switch (pci_get_devid(dev)) {
62 case 0x00011039:
63 return ("SiS 5591 host to AGP bridge");
ab5a0ec8
MD
64 case 0x05301039:
65 return ("SiS 530 host to AGP bridge");
66 case 0x05401039:
67 return ("SiS 540 host to AGP bridge");
68 case 0x05501039:
69 return ("SiS 550 host to AGP bridge");
70 case 0x06201039:
71 return ("SiS 620 host to AGP bridge");
72 case 0x06301039:
73 return ("SiS 630 host to AGP bridge");
74 case 0x06451039:
75 return ("SiS 645 host to AGP bridge");
76 case 0x06461039:
77 return ("SiS 645DX host to AGP bridge");
f7841f3c
MD
78 case 0x06481039:
79 return ("SiS 648 host to AGP bridge");
ab5a0ec8
MD
80 case 0x06501039:
81 return ("SiS 650 host to AGP bridge");
82 case 0x06511039:
83 return ("SiS 651 host to AGP bridge");
84 case 0x06551039:
85 return ("SiS 655 host to AGP bridge");
86 case 0x06611039:
87 return ("SiS 661 host to AGP bridge");
88 case 0x07301039:
89 return ("SiS 730 host to AGP bridge");
90 case 0x07351039:
91 return ("SiS 735 host to AGP bridge");
92 case 0x07401039:
93 return ("SiS 740 host to AGP bridge");
94 case 0x07411039:
95 return ("SiS 741 host to AGP bridge");
96 case 0x07451039:
97 return ("SiS 745 host to AGP bridge");
98 case 0x07461039:
99 return ("SiS 746 host to AGP bridge");
0fdb7d01 100 }
984263bc 101
984263bc
MD
102 return NULL;
103}
104
105static int
106agp_sis_probe(device_t dev)
107{
108 const char *desc;
109
fdc3c5be
HT
110 if (resource_disabled("agp", device_get_unit(dev)))
111 return (ENXIO);
984263bc
MD
112 desc = agp_sis_match(dev);
113 if (desc) {
114 device_verbose(dev);
115 device_set_desc(dev, desc);
fdc3c5be 116 return BUS_PROBE_DEFAULT;
984263bc
MD
117 }
118
119 return ENXIO;
120}
121
122static int
123agp_sis_attach(device_t dev)
124{
125 struct agp_sis_softc *sc = device_get_softc(dev);
126 struct agp_gatt *gatt;
127 int error;
128
129 error = agp_generic_attach(dev);
130 if (error)
131 return error;
132
133 sc->initial_aperture = AGP_GET_APERTURE(dev);
134
135 for (;;) {
136 gatt = agp_alloc_gatt(dev);
137 if (gatt)
138 break;
139
140 /*
141 * Probably contigmalloc failure. Try reducing the
142 * aperture so that the gatt size reduces.
143 */
144 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) {
145 agp_generic_detach(dev);
146 return ENOMEM;
147 }
148 }
149 sc->gatt = gatt;
150
151 /* Install the gatt. */
152 pci_write_config(dev, AGP_SIS_ATTBASE, gatt->ag_physical, 4);
153
154 /* Enable the aperture. */
155 pci_write_config(dev, AGP_SIS_WINCTRL,
156 pci_read_config(dev, AGP_SIS_WINCTRL, 1) | 3, 1);
157
158 /*
159 * Enable the TLB and make it automatically invalidate entries
160 * when the GATT is written.
161 */
162 pci_write_config(dev, AGP_SIS_TLBCTRL, 0x05, 1);
163
164 return 0;
165}
166
167static int
168agp_sis_detach(device_t dev)
169{
170 struct agp_sis_softc *sc = device_get_softc(dev);
984263bc 171
67e2dc5d 172 agp_free_cdev(dev);
984263bc
MD
173
174 /* Disable the aperture.. */
175 pci_write_config(dev, AGP_SIS_WINCTRL,
176 pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~3, 1);
177
178 /* and the TLB. */
179 pci_write_config(dev, AGP_SIS_TLBCTRL, 0, 1);
180
181 /* Put the aperture back the way it started. */
182 AGP_SET_APERTURE(dev, sc->initial_aperture);
183
184 agp_free_gatt(sc->gatt);
67e2dc5d 185 agp_free_res(dev);
984263bc
MD
186 return 0;
187}
188
189static u_int32_t
190agp_sis_get_aperture(device_t dev)
191{
192 int gws;
193
194 /*
195 * The aperture size is equal to 4M<<gws.
196 */
197 gws = (pci_read_config(dev, AGP_SIS_WINCTRL, 1) & 0x70) >> 4;
198 return (4*1024*1024) << gws;
199}
200
201static int
202agp_sis_set_aperture(device_t dev, u_int32_t aperture)
203{
204 int gws;
205
206 /*
207 * Check for a power of two and make sure its within the
208 * programmable range.
209 */
210 if (aperture & (aperture - 1)
211 || aperture < 4*1024*1024
212 || aperture > 256*1024*1024)
213 return EINVAL;
214
215 gws = ffs(aperture / 4*1024*1024) - 1;
216
217 pci_write_config(dev, AGP_SIS_WINCTRL,
218 ((pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~0x70)
219 | gws << 4), 1);
220
221 return 0;
222}
223
224static int
7f9ec87c 225agp_sis_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical)
984263bc
MD
226{
227 struct agp_sis_softc *sc = device_get_softc(dev);
228
7f9ec87c 229 if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
984263bc
MD
230 return EINVAL;
231
232 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
233 return 0;
234}
235
236static int
7f9ec87c 237agp_sis_unbind_page(device_t dev, vm_offset_t offset)
984263bc
MD
238{
239 struct agp_sis_softc *sc = device_get_softc(dev);
240
7f9ec87c 241 if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
984263bc
MD
242 return EINVAL;
243
244 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
245 return 0;
246}
247
248static void
249agp_sis_flush_tlb(device_t dev)
250{
251 pci_write_config(dev, AGP_SIS_TLBFLUSH, 0x02, 1);
252}
253
254static device_method_t agp_sis_methods[] = {
255 /* Device interface */
256 DEVMETHOD(device_probe, agp_sis_probe),
257 DEVMETHOD(device_attach, agp_sis_attach),
258 DEVMETHOD(device_detach, agp_sis_detach),
259 DEVMETHOD(device_shutdown, bus_generic_shutdown),
260 DEVMETHOD(device_suspend, bus_generic_suspend),
261 DEVMETHOD(device_resume, bus_generic_resume),
262
263 /* AGP interface */
264 DEVMETHOD(agp_get_aperture, agp_sis_get_aperture),
265 DEVMETHOD(agp_set_aperture, agp_sis_set_aperture),
266 DEVMETHOD(agp_bind_page, agp_sis_bind_page),
267 DEVMETHOD(agp_unbind_page, agp_sis_unbind_page),
268 DEVMETHOD(agp_flush_tlb, agp_sis_flush_tlb),
269 DEVMETHOD(agp_enable, agp_generic_enable),
270 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
271 DEVMETHOD(agp_free_memory, agp_generic_free_memory),
272 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
273 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
274
d3c9c58e 275 DEVMETHOD_END
984263bc
MD
276};
277
278static driver_t agp_sis_driver = {
279 "agp",
280 agp_sis_methods,
281 sizeof(struct agp_sis_softc),
282};
283
284static devclass_t agp_devclass;
285
aa2b9d05 286DRIVER_MODULE(agp_sis, pci, agp_sis_driver, agp_devclass, NULL, NULL);
f7841f3c
MD
287MODULE_DEPEND(agp_sis, agp, 1, 1, 1);
288MODULE_DEPEND(agp_sis, pci, 1, 1, 1);