agp_sis.c revision 244926
1296417Sdim/*- 2285101Semaste * Copyright (c) 2000 Doug Rabson 3353358Sdim * All rights reserved. 4353358Sdim * 5353358Sdim * Redistribution and use in source and binary forms, with or without 6285101Semaste * modification, are permitted provided that the following conditions 7285101Semaste * are met: 8285101Semaste * 1. Redistributions of source code must retain the above copyright 9285101Semaste * notice, this list of conditions and the following disclaimer. 10285101Semaste * 2. Redistributions in binary form must reproduce the above copyright 11285101Semaste * notice, this list of conditions and the following disclaimer in the 12296417Sdim * documentation and/or other materials provided with the distribution. 13296417Sdim * 14321369Sdim * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15296417Sdim * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16314564Sdim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17314564Sdim * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18314564Sdim * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19314564Sdim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20314564Sdim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21314564Sdim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22314564Sdim * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23314564Sdim * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24296417Sdim * SUCH DAMAGE. 25285101Semaste */ 26314564Sdim 27314564Sdim#include <sys/cdefs.h> 28314564Sdim__FBSDID("$FreeBSD: head/sys/dev/agp/agp_sis.c 244926 2013-01-01 18:16:49Z antoine $"); 29296417Sdim 30314564Sdim#include <sys/param.h> 31285101Semaste#include <sys/systm.h> 32314564Sdim#include <sys/malloc.h> 33285101Semaste#include <sys/kernel.h> 34314564Sdim#include <sys/module.h> 35285101Semaste#include <sys/bus.h> 36314564Sdim#include <sys/lock.h> 37285101Semaste#include <sys/mutex.h> 38314564Sdim#include <sys/proc.h> 39314564Sdim 40314564Sdim#include <dev/agp/agppriv.h> 41285101Semaste#include <dev/agp/agpreg.h> 42314564Sdim#include <dev/pci/pcivar.h> 43314564Sdim#include <dev/pci/pcireg.h> 44314564Sdim 45314564Sdim#include <vm/vm.h> 46314564Sdim#include <vm/vm_object.h> 47314564Sdim#include <vm/pmap.h> 48314564Sdim 49285101Semastestruct agp_sis_softc { 50314564Sdim struct agp_softc agp; 51314564Sdim u_int32_t initial_aperture; /* aperture size at startup */ 52285101Semaste struct agp_gatt *gatt; 53314564Sdim}; 54314564Sdim 55285101Semastestatic const char* 56314564Sdimagp_sis_match(device_t dev) 57285101Semaste{ 58314564Sdim if (pci_get_class(dev) != PCIC_BRIDGE 59285101Semaste || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) 60314564Sdim return NULL; 61285101Semaste 62314564Sdim if (agp_find_caps(dev) == 0) 63314564Sdim return NULL; 64314564Sdim 65314564Sdim switch (pci_get_devid(dev)) { 66285101Semaste case 0x00011039: 67314564Sdim return ("SiS 5591 host to AGP bridge"); 68314564Sdim case 0x05301039: 69314564Sdim return ("SiS 530 host to AGP bridge"); 70314564Sdim case 0x05401039: 71314564Sdim return ("SiS 540 host to AGP bridge"); 72314564Sdim case 0x05501039: 73314564Sdim return ("SiS 550 host to AGP bridge"); 74314564Sdim case 0x06201039: 75314564Sdim return ("SiS 620 host to AGP bridge"); 76314564Sdim case 0x06301039: 77314564Sdim return ("SiS 630 host to AGP bridge"); 78314564Sdim case 0x06451039: 79314564Sdim return ("SiS 645 host to AGP bridge"); 80314564Sdim case 0x06461039: 81314564Sdim return ("SiS 645DX host to AGP bridge"); 82314564Sdim case 0x06481039: 83285101Semaste return ("SiS 648 host to AGP bridge"); 84314564Sdim case 0x06501039: 85314564Sdim return ("SiS 650 host to AGP bridge"); 86314564Sdim case 0x06511039: 87314564Sdim return ("SiS 651 host to AGP bridge"); 88314564Sdim case 0x06551039: 89285101Semaste return ("SiS 655 host to AGP bridge"); 90314564Sdim case 0x06611039: 91285101Semaste return ("SiS 661 host to AGP bridge"); 92314564Sdim case 0x07301039: 93309124Sdim return ("SiS 730 host to AGP bridge"); 94314564Sdim case 0x07351039: 95309124Sdim return ("SiS 735 host to AGP bridge"); 96314564Sdim case 0x07401039: 97285101Semaste return ("SiS 740 host to AGP bridge"); 98314564Sdim case 0x07411039: 99285101Semaste return ("SiS 741 host to AGP bridge"); 100314564Sdim case 0x07451039: 101285101Semaste return ("SiS 745 host to AGP bridge"); 102314564Sdim case 0x07461039: 103285101Semaste return ("SiS 746 host to AGP bridge"); 104314564Sdim } 105285101Semaste 106314564Sdim return NULL; 107285101Semaste} 108314564Sdim 109285101Semastestatic int 110314564Sdimagp_sis_probe(device_t dev) 111285101Semaste{ 112314564Sdim const char *desc; 113285101Semaste 114314564Sdim if (resource_disabled("agp", device_get_unit(dev))) 115285101Semaste return (ENXIO); 116314564Sdim desc = agp_sis_match(dev); 117285101Semaste if (desc) { 118314564Sdim device_set_desc(dev, desc); 119285101Semaste return BUS_PROBE_DEFAULT; 120314564Sdim } 121285101Semaste 122314564Sdim return ENXIO; 123285101Semaste} 124314564Sdim 125285101Semastestatic int 126314564Sdimagp_sis_attach(device_t dev) 127285101Semaste{ 128314564Sdim struct agp_sis_softc *sc = device_get_softc(dev); 129285101Semaste struct agp_gatt *gatt; 130314564Sdim int error; 131285101Semaste 132314564Sdim error = agp_generic_attach(dev); 133285101Semaste if (error) 134314564Sdim return error; 135285101Semaste 136314564Sdim sc->initial_aperture = AGP_GET_APERTURE(dev); 137285101Semaste 138314564Sdim for (;;) { 139285101Semaste gatt = agp_alloc_gatt(dev); 140314564Sdim if (gatt) 141285101Semaste break; 142314564Sdim 143285101Semaste /* 144314564Sdim * Probably contigmalloc failure. Try reducing the 145285101Semaste * aperture so that the gatt size reduces. 146314564Sdim */ 147285101Semaste if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) { 148314564Sdim agp_generic_detach(dev); 149285101Semaste return ENOMEM; 150314564Sdim } 151285101Semaste } 152314564Sdim sc->gatt = gatt; 153285101Semaste 154314564Sdim /* Install the gatt. */ 155285101Semaste pci_write_config(dev, AGP_SIS_ATTBASE, gatt->ag_physical, 4); 156314564Sdim 157285101Semaste /* Enable the aperture. */ 158314564Sdim pci_write_config(dev, AGP_SIS_WINCTRL, 159285101Semaste pci_read_config(dev, AGP_SIS_WINCTRL, 1) | 3, 1); 160314564Sdim 161314564Sdim /* 162285101Semaste * Enable the TLB and make it automatically invalidate entries 163314564Sdim * when the GATT is written. 164285101Semaste */ 165314564Sdim pci_write_config(dev, AGP_SIS_TLBCTRL, 0x05, 1); 166285101Semaste 167314564Sdim return 0; 168285101Semaste} 169314564Sdim 170285101Semastestatic int 171314564Sdimagp_sis_detach(device_t dev) 172314564Sdim{ 173285101Semaste struct agp_sis_softc *sc = device_get_softc(dev); 174314564Sdim 175314564Sdim agp_free_cdev(dev); 176314564Sdim 177314564Sdim /* Disable the aperture.. */ 178314564Sdim pci_write_config(dev, AGP_SIS_WINCTRL, 179314564Sdim pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~3, 1); 180285101Semaste 181285101Semaste /* and the TLB. */ 182296417Sdim pci_write_config(dev, AGP_SIS_TLBCTRL, 0, 1); 183 184 /* Put the aperture back the way it started. */ 185 AGP_SET_APERTURE(dev, sc->initial_aperture); 186 187 agp_free_gatt(sc->gatt); 188 agp_free_res(dev); 189 return 0; 190} 191 192static u_int32_t 193agp_sis_get_aperture(device_t dev) 194{ 195 int gws; 196 197 /* 198 * The aperture size is equal to 4M<<gws. 199 */ 200 gws = (pci_read_config(dev, AGP_SIS_WINCTRL, 1) & 0x70) >> 4; 201 return (4*1024*1024) << gws; 202} 203 204static int 205agp_sis_set_aperture(device_t dev, u_int32_t aperture) 206{ 207 int gws; 208 209 /* 210 * Check for a power of two and make sure its within the 211 * programmable range. 212 */ 213 if (aperture & (aperture - 1) 214 || aperture < 4*1024*1024 215 || aperture > 256*1024*1024) 216 return EINVAL; 217 218 gws = ffs(aperture / 4*1024*1024) - 1; 219 220 pci_write_config(dev, AGP_SIS_WINCTRL, 221 ((pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~0x70) 222 | gws << 4), 1); 223 224 return 0; 225} 226 227static int 228agp_sis_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical) 229{ 230 struct agp_sis_softc *sc = device_get_softc(dev); 231 232 if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 233 return EINVAL; 234 235 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; 236 return 0; 237} 238 239static int 240agp_sis_unbind_page(device_t dev, vm_offset_t offset) 241{ 242 struct agp_sis_softc *sc = device_get_softc(dev); 243 244 if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 245 return EINVAL; 246 247 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 248 return 0; 249} 250 251static void 252agp_sis_flush_tlb(device_t dev) 253{ 254 pci_write_config(dev, AGP_SIS_TLBFLUSH, 0x02, 1); 255} 256 257static 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), 265 266 /* AGP interface */ 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), 277 278 { 0, 0 } 279}; 280 281static driver_t agp_sis_driver = { 282 "agp", 283 agp_sis_methods, 284 sizeof(struct agp_sis_softc), 285}; 286 287static devclass_t agp_devclass; 288 289DRIVER_MODULE(agp_sis, hostb, agp_sis_driver, agp_devclass, 0, 0); 290MODULE_DEPEND(agp_sis, agp, 1, 1, 1); 291MODULE_DEPEND(agp_sis, pci, 1, 1, 1); 292