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 0x10221039: 84 return ("SiS 755 host to AGP bridge"); 85 case 0x02041106: 86 return ("VIA 8380 host to PCI bridge"); 87 case 0x31881106: 88 return ("VIA 8385 host to PCI bridge"); 89 }; 90 91 return NULL; 92 } 93 94 static int 95 agp_amd64_probe(device_t dev) 96 { 97 const char *desc; 98 99 if (resource_disabled("agp", device_get_unit(dev))) 100 return ENXIO; 101 if ((desc = agp_amd64_match(dev))) { 102 device_verbose(dev); 103 device_set_desc(dev, desc); 104 return 0; 105 } 106 107 return ENXIO; 108 } 109 110 static int 111 agp_amd64_attach(device_t dev) 112 { 113 struct agp_amd64_softc *sc = device_get_softc(dev); 114 struct agp_gatt *gatt; 115 int i, n, error; 116 117 for (i = 0, n = 0; i < PCI_SLOTMAX && n < AMD64_MAX_MCTRL; i++) 118 if (pci_cfgregread(0, i, 3, 0, 4) == 0x11031022) { 119 sc->mctrl[n] = i; 120 n++; 121 } 122 123 if (n == 0) 124 return ENXIO; 125 126 sc->n_mctrl = n; 127 128 if (bootverbose) 129 printf("AMD64: %d Misc. Control unit(s) found.\n", sc->n_mctrl); 130 131 if ((error = agp_generic_attach(dev))) 132 return error; 133 134 sc->initial_aperture = AGP_GET_APERTURE(dev); 135 136 for (;;) { 137 gatt = agp_alloc_gatt(dev); 138 if (gatt) 139 break; 140 141 /* 142 * Probably contigmalloc failure. Try reducing the 143 * aperture so that the gatt size reduces. 144 */ 145 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) { 146 agp_generic_detach(dev); 147 return ENOMEM; 148 } 149 } 150 sc->gatt = gatt; 151 152 /* Install the gatt and enable aperture. */ 153 for (i = 0; i < sc->n_mctrl; i++) { 154 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_ATTBASE, 155 (uint32_t)(gatt->ag_physical >> 8) & AGP_AMD64_ATTBASE_MASK, 156 4); 157 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 158 (pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 4) | 159 AGP_AMD64_APCTRL_GARTEN) & 160 ~(AGP_AMD64_APCTRL_DISGARTCPU | AGP_AMD64_APCTRL_DISGARTIO), 161 4); 162 } 163 164 agp_flush_cache(); 165 166 return 0; 167 } 168 169 static int 170 agp_amd64_detach(device_t dev) 171 { 172 struct agp_amd64_softc *sc = device_get_softc(dev); 173 int i, error; 174 175 if ((error = agp_generic_detach(dev))) 176 return error; 177 178 for (i = 0; i < sc->n_mctrl; i++) 179 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 180 pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 4) & 181 ~AGP_AMD64_APCTRL_GARTEN, 4); 182 183 AGP_SET_APERTURE(dev, sc->initial_aperture); 184 agp_free_gatt(sc->gatt); 185 186 return 0; 187 } 188 189 static uint32_t agp_amd64_table[] = { 190 0x02000000, /* 32 MB */ 191 0x04000000, /* 64 MB */ 192 0x08000000, /* 128 MB */ 193 0x10000000, /* 256 MB */ 194 0x20000000, /* 512 MB */ 195 0x40000000, /* 1024 MB */ 196 0x80000000, /* 2048 MB */ 197 }; 198 199 #define AGP_AMD64_TABLE_SIZE \ 200 (sizeof(agp_amd64_table) / sizeof(agp_amd64_table[0])) 201 202 static uint32_t 203 agp_amd64_get_aperture(device_t dev) 204 { 205 struct agp_amd64_softc *sc = device_get_softc(dev); 206 uint32_t i; 207 208 i = (pci_cfgregread(0, sc->mctrl[0], 3, AGP_AMD64_APCTRL, 4) & 209 AGP_AMD64_APCTRL_SIZE_MASK) >> 1; 210 211 if (i >= AGP_AMD64_TABLE_SIZE) 212 return 0; 213 214 return (agp_amd64_table[i]); 215 } 216 217 static int 218 agp_amd64_set_aperture(device_t dev, uint32_t aperture) 219 { 220 struct agp_amd64_softc *sc = device_get_softc(dev); 221 uint32_t i; 222 int j; 223 224 for (i = 0; i < AGP_AMD64_TABLE_SIZE; i++) 225 if (agp_amd64_table[i] == aperture) 226 break; 227 if (i == AGP_AMD64_TABLE_SIZE) 228 return EINVAL; 229 230 for (j = 0; j < sc->n_mctrl; j++) 231 pci_cfgregwrite(0, sc->mctrl[j], 3, AGP_AMD64_APCTRL, 232 (pci_cfgregread(0, sc->mctrl[j], 3, AGP_AMD64_APCTRL, 4) & 233 ~(AGP_AMD64_APCTRL_SIZE_MASK)) | (i << 1), 4); 234 235 return 0; 236 } 237 238 static int 239 agp_amd64_bind_page(device_t dev, int offset, vm_offset_t physical) 240 { 241 struct agp_amd64_softc *sc = device_get_softc(dev); 242 243 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 244 return EINVAL; 245 246 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; 247 return 0; 248 } 249 250 static int 251 agp_amd64_unbind_page(device_t dev, int offset) 252 { 253 struct agp_amd64_softc *sc = device_get_softc(dev); 254 255 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 256 return EINVAL; 257 258 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 259 return 0; 260 } 261 262 static void 263 agp_amd64_flush_tlb(device_t dev) 264 { 265 struct agp_amd64_softc *sc = device_get_softc(dev); 266 int i; 267 268 for (i = 0; i < sc->n_mctrl; i++) 269 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_CACHECTRL, 270 pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_CACHECTRL, 4) | 271 AGP_AMD64_CACHECTRL_INVGART, 4); 272 } 273 274 static device_method_t agp_amd64_methods[] = { 275 /* Device interface */ 276 DEVMETHOD(device_probe, agp_amd64_probe), 277 DEVMETHOD(device_attach, agp_amd64_attach), 278 DEVMETHOD(device_detach, agp_amd64_detach), 279 DEVMETHOD(device_shutdown, bus_generic_shutdown), 280 DEVMETHOD(device_suspend, bus_generic_suspend), 281 DEVMETHOD(device_resume, bus_generic_resume), 282 283 /* AGP interface */ 284 DEVMETHOD(agp_get_aperture, agp_amd64_get_aperture), 285 DEVMETHOD(agp_set_aperture, agp_amd64_set_aperture), 286 DEVMETHOD(agp_bind_page, agp_amd64_bind_page), 287 DEVMETHOD(agp_unbind_page, agp_amd64_unbind_page), 288 DEVMETHOD(agp_flush_tlb, agp_amd64_flush_tlb), 289 DEVMETHOD(agp_enable, agp_generic_enable), 290 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), 291 DEVMETHOD(agp_free_memory, agp_generic_free_memory), 292 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), 293 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), 294 295 { 0, 0 } 296 }; 297 298 static driver_t agp_amd64_driver = { 299 "agp", 300 agp_amd64_methods, 301 sizeof(struct agp_amd64_softc), 302 }; 303 304 static devclass_t agp_devclass; 305 306 DRIVER_MODULE(agp_amd64, pci, agp_amd64_driver, agp_devclass, 0, 0); 307 MODULE_DEPEND(agp_amd64, agp, 1, 1, 1); 308 MODULE_DEPEND(agp_amd64, pci, 1, 1, 1); 309