agp_sis.c revision 159075
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 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/dev/agp/agp_sis.c 159075 2006-05-30 18:41:26Z jkim $"); 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 51struct agp_sis_softc { 52 struct agp_softc agp; 53 u_int32_t initial_aperture; /* aperture size at startup */ 54 struct agp_gatt *gatt; 55}; 56 57static const char* 58agp_sis_match(device_t dev) 59{ 60 if (pci_get_class(dev) != PCIC_BRIDGE 61 || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) 62 return NULL; 63 64 if (agp_find_caps(dev) == 0) 65 return NULL; 66 67 switch (pci_get_devid(dev)) { 68 case 0x00011039: 69 return ("SiS 5591 host to AGP bridge"); 70 case 0x05301039: 71 return ("SiS 530 host to AGP bridge"); 72 case 0x05401039: 73 return ("SiS 540 host to AGP bridge"); 74 case 0x05501039: 75 return ("SiS 550 host to AGP bridge"); 76 case 0x06201039: 77 return ("SiS 620 host to AGP bridge"); 78 case 0x06301039: 79 return ("SiS 630 host to AGP bridge"); 80 case 0x06451039: 81 return ("SiS 645 host to AGP bridge"); 82 case 0x06461039: 83 return ("SiS 645DX host to AGP bridge"); 84 case 0x06481039: 85 return ("SiS 648 host to AGP bridge"); 86 case 0x06501039: 87 return ("SiS 650 host to AGP bridge"); 88 case 0x06511039: 89 return ("SiS 651 host to AGP bridge"); 90 case 0x06551039: 91 return ("SiS 655 host to AGP bridge"); 92 case 0x06611039: 93 return ("SiS 661 host to AGP bridge"); 94 case 0x07301039: 95 return ("SiS 730 host to AGP bridge"); 96 case 0x07351039: 97 return ("SiS 735 host to AGP bridge"); 98 case 0x07401039: 99 return ("SiS 740 host to AGP bridge"); 100 case 0x07411039: 101 return ("SiS 741 host to AGP bridge"); 102 case 0x07451039: 103 return ("SiS 745 host to AGP bridge"); 104 case 0x07461039: 105 return ("SiS 746 host to AGP bridge"); 106 }; 107 108 return NULL; 109} 110 111static int 112agp_sis_probe(device_t dev) 113{ 114 const char *desc; 115 116 if (resource_disabled("agp", device_get_unit(dev))) 117 return (ENXIO); 118 desc = agp_sis_match(dev); 119 if (desc) { 120 device_set_desc(dev, desc); 121 return BUS_PROBE_DEFAULT; 122 } 123 124 return ENXIO; 125} 126 127static int 128agp_sis_attach(device_t dev) 129{ 130 struct agp_sis_softc *sc = device_get_softc(dev); 131 struct agp_gatt *gatt; 132 int error; 133 134 error = agp_generic_attach(dev); 135 if (error) 136 return error; 137 138 sc->initial_aperture = AGP_GET_APERTURE(dev); 139 140 for (;;) { 141 gatt = agp_alloc_gatt(dev); 142 if (gatt) 143 break; 144 145 /* 146 * Probably contigmalloc failure. Try reducing the 147 * aperture so that the gatt size reduces. 148 */ 149 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) { 150 agp_generic_detach(dev); 151 return ENOMEM; 152 } 153 } 154 sc->gatt = gatt; 155 156 /* Install the gatt. */ 157 pci_write_config(dev, AGP_SIS_ATTBASE, gatt->ag_physical, 4); 158 159 /* Enable the aperture. */ 160 pci_write_config(dev, AGP_SIS_WINCTRL, 161 pci_read_config(dev, AGP_SIS_WINCTRL, 1) | 3, 1); 162 163 /* 164 * Enable the TLB and make it automatically invalidate entries 165 * when the GATT is written. 166 */ 167 pci_write_config(dev, AGP_SIS_TLBCTRL, 0x05, 1); 168 169 return 0; 170} 171 172static int 173agp_sis_detach(device_t dev) 174{ 175 struct agp_sis_softc *sc = device_get_softc(dev); 176 int error; 177 178 error = agp_generic_detach(dev); 179 if (error) 180 return error; 181 182 /* Disable the aperture.. */ 183 pci_write_config(dev, AGP_SIS_WINCTRL, 184 pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~3, 1); 185 186 /* and the TLB. */ 187 pci_write_config(dev, AGP_SIS_TLBCTRL, 0, 1); 188 189 /* Put the aperture back the way it started. */ 190 AGP_SET_APERTURE(dev, sc->initial_aperture); 191 192 agp_free_gatt(sc->gatt); 193 return 0; 194} 195 196static u_int32_t 197agp_sis_get_aperture(device_t dev) 198{ 199 int gws; 200 201 /* 202 * The aperture size is equal to 4M<<gws. 203 */ 204 gws = (pci_read_config(dev, AGP_SIS_WINCTRL, 1) & 0x70) >> 4; 205 return (4*1024*1024) << gws; 206} 207 208static int 209agp_sis_set_aperture(device_t dev, u_int32_t aperture) 210{ 211 int gws; 212 213 /* 214 * Check for a power of two and make sure its within the 215 * programmable range. 216 */ 217 if (aperture & (aperture - 1) 218 || aperture < 4*1024*1024 219 || aperture > 256*1024*1024) 220 return EINVAL; 221 222 gws = ffs(aperture / 4*1024*1024) - 1; 223 224 pci_write_config(dev, AGP_SIS_WINCTRL, 225 ((pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~0x70) 226 | gws << 4), 1); 227 228 return 0; 229} 230 231static int 232agp_sis_bind_page(device_t dev, int offset, vm_offset_t physical) 233{ 234 struct agp_sis_softc *sc = device_get_softc(dev); 235 236 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 237 return EINVAL; 238 239 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; 240 return 0; 241} 242 243static int 244agp_sis_unbind_page(device_t dev, int offset) 245{ 246 struct agp_sis_softc *sc = device_get_softc(dev); 247 248 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 249 return EINVAL; 250 251 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 252 return 0; 253} 254 255static void 256agp_sis_flush_tlb(device_t dev) 257{ 258 pci_write_config(dev, AGP_SIS_TLBFLUSH, 0x02, 1); 259} 260 261static device_method_t agp_sis_methods[] = { 262 /* Device interface */ 263 DEVMETHOD(device_probe, agp_sis_probe), 264 DEVMETHOD(device_attach, agp_sis_attach), 265 DEVMETHOD(device_detach, agp_sis_detach), 266 DEVMETHOD(device_shutdown, bus_generic_shutdown), 267 DEVMETHOD(device_suspend, bus_generic_suspend), 268 DEVMETHOD(device_resume, bus_generic_resume), 269 270 /* AGP interface */ 271 DEVMETHOD(agp_get_aperture, agp_sis_get_aperture), 272 DEVMETHOD(agp_set_aperture, agp_sis_set_aperture), 273 DEVMETHOD(agp_bind_page, agp_sis_bind_page), 274 DEVMETHOD(agp_unbind_page, agp_sis_unbind_page), 275 DEVMETHOD(agp_flush_tlb, agp_sis_flush_tlb), 276 DEVMETHOD(agp_enable, agp_generic_enable), 277 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), 278 DEVMETHOD(agp_free_memory, agp_generic_free_memory), 279 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), 280 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), 281 282 { 0, 0 } 283}; 284 285static driver_t agp_sis_driver = { 286 "agp", 287 agp_sis_methods, 288 sizeof(struct agp_sis_softc), 289}; 290 291static devclass_t agp_devclass; 292 293DRIVER_MODULE(agp_sis, hostb, agp_sis_driver, agp_devclass, 0, 0); 294MODULE_DEPEND(agp_sis, agp, 1, 1, 1); 295MODULE_DEPEND(agp_sis, pci, 1, 1, 1); 296