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("$FreeBSD$"); 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); 315