2 * Copyright (c) 2000 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/sys/dev/agp/agp_sis.c,v 1.22 2007/11/12 21:51:37 jhb Exp $
27 * $DragonFly: src/sys/dev/agp/agp_sis.c,v 1.8 2008/01/07 01:34:58 corecode Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/malloc.h>
35 #include <sys/kernel.h>
39 #include <bus/pci/pcivar.h>
40 #include <bus/pci/pcireg.h>
45 #include <vm/vm_object.h>
48 struct agp_sis_softc {
50 u_int32_t initial_aperture; /* aperture size at startup */
51 struct agp_gatt *gatt;
55 agp_sis_match(device_t dev)
57 if (pci_get_class(dev) != PCIC_BRIDGE
58 || pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
61 if (agp_find_caps(dev) == 0)
64 switch (pci_get_devid(dev)) {
66 return ("SiS 5591 host to AGP bridge");
68 return ("SiS 530 host to AGP bridge");
70 return ("SiS 540 host to AGP bridge");
72 return ("SiS 550 host to AGP bridge");
74 return ("SiS 620 host to AGP bridge");
76 return ("SiS 630 host to AGP bridge");
78 return ("SiS 645 host to AGP bridge");
80 return ("SiS 645DX host to AGP bridge");
82 return ("SiS 648 host to AGP bridge");
84 return ("SiS 650 host to AGP bridge");
86 return ("SiS 651 host to AGP bridge");
88 return ("SiS 655 host to AGP bridge");
90 return ("SiS 661 host to AGP bridge");
92 return ("SiS 730 host to AGP bridge");
94 return ("SiS 735 host to AGP bridge");
96 return ("SiS 740 host to AGP bridge");
98 return ("SiS 741 host to AGP bridge");
100 return ("SiS 745 host to AGP bridge");
102 return ("SiS 746 host to AGP bridge");
109 agp_sis_probe(device_t dev)
113 if (resource_disabled("agp", device_get_unit(dev)))
115 desc = agp_sis_match(dev);
118 device_set_desc(dev, desc);
119 return BUS_PROBE_DEFAULT;
126 agp_sis_attach(device_t dev)
128 struct agp_sis_softc *sc = device_get_softc(dev);
129 struct agp_gatt *gatt;
132 error = agp_generic_attach(dev);
136 sc->initial_aperture = AGP_GET_APERTURE(dev);
139 gatt = agp_alloc_gatt(dev);
144 * Probably contigmalloc failure. Try reducing the
145 * aperture so that the gatt size reduces.
147 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) {
148 agp_generic_detach(dev);
154 /* Install the gatt. */
155 pci_write_config(dev, AGP_SIS_ATTBASE, gatt->ag_physical, 4);
157 /* Enable the aperture. */
158 pci_write_config(dev, AGP_SIS_WINCTRL,
159 pci_read_config(dev, AGP_SIS_WINCTRL, 1) | 3, 1);
162 * Enable the TLB and make it automatically invalidate entries
163 * when the GATT is written.
165 pci_write_config(dev, AGP_SIS_TLBCTRL, 0x05, 1);
171 agp_sis_detach(device_t dev)
173 struct agp_sis_softc *sc = device_get_softc(dev);
177 /* Disable the aperture.. */
178 pci_write_config(dev, AGP_SIS_WINCTRL,
179 pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~3, 1);
182 pci_write_config(dev, AGP_SIS_TLBCTRL, 0, 1);
184 /* Put the aperture back the way it started. */
185 AGP_SET_APERTURE(dev, sc->initial_aperture);
187 agp_free_gatt(sc->gatt);
193 agp_sis_get_aperture(device_t dev)
198 * The aperture size is equal to 4M<<gws.
200 gws = (pci_read_config(dev, AGP_SIS_WINCTRL, 1) & 0x70) >> 4;
201 return (4*1024*1024) << gws;
205 agp_sis_set_aperture(device_t dev, u_int32_t aperture)
210 * Check for a power of two and make sure its within the
211 * programmable range.
213 if (aperture & (aperture - 1)
214 || aperture < 4*1024*1024
215 || aperture > 256*1024*1024)
218 gws = ffs(aperture / 4*1024*1024) - 1;
220 pci_write_config(dev, AGP_SIS_WINCTRL,
221 ((pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~0x70)
228 agp_sis_bind_page(device_t dev, int offset, vm_offset_t physical)
230 struct agp_sis_softc *sc = device_get_softc(dev);
232 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
235 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
240 agp_sis_unbind_page(device_t dev, int offset)
242 struct agp_sis_softc *sc = device_get_softc(dev);
244 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
247 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
252 agp_sis_flush_tlb(device_t dev)
254 pci_write_config(dev, AGP_SIS_TLBFLUSH, 0x02, 1);
257 static device_method_t agp_sis_methods[] = {
258 /* Device interface */
259 DEVMETHOD(device_probe, agp_sis_probe),
260 DEVMETHOD(device_attach, agp_sis_attach),
261 DEVMETHOD(device_detach, agp_sis_detach),
262 DEVMETHOD(device_shutdown, bus_generic_shutdown),
263 DEVMETHOD(device_suspend, bus_generic_suspend),
264 DEVMETHOD(device_resume, bus_generic_resume),
267 DEVMETHOD(agp_get_aperture, agp_sis_get_aperture),
268 DEVMETHOD(agp_set_aperture, agp_sis_set_aperture),
269 DEVMETHOD(agp_bind_page, agp_sis_bind_page),
270 DEVMETHOD(agp_unbind_page, agp_sis_unbind_page),
271 DEVMETHOD(agp_flush_tlb, agp_sis_flush_tlb),
272 DEVMETHOD(agp_enable, agp_generic_enable),
273 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
274 DEVMETHOD(agp_free_memory, agp_generic_free_memory),
275 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
276 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
281 static driver_t agp_sis_driver = {
284 sizeof(struct agp_sis_softc),
287 static devclass_t agp_devclass;
289 DRIVER_MODULE(agp_sis, pci, agp_sis_driver, agp_devclass, 0, 0);
290 MODULE_DEPEND(agp_sis, agp, 1, 1, 1);
291 MODULE_DEPEND(agp_sis, pci, 1, 1, 1);