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 0x02821106: 88 return ("VIA K8T800Pro host to PCI bridge"); 89 case 0x31881106: 90 return ("VIA 8385 host to PCI bridge"); 91 }; 92 93 return NULL; 94 } 95 96 static int 97 agp_amd64_probe(device_t dev) 98 { 99 const char *desc; 100 101 if (resource_disabled("agp", device_get_unit(dev))) 102 return ENXIO; 103 if ((desc = agp_amd64_match(dev))) { 104 device_verbose(dev); 105 device_set_desc(dev, desc); 106 return 0; 107 } 108 109 return ENXIO; 110 } 111 112 static int 113 agp_amd64_attach(device_t dev) 114 { 115 struct agp_amd64_softc *sc = device_get_softc(dev); 116 struct agp_gatt *gatt; 117 int i, n, error; 118 119 for (i = 0, n = 0; i < PCI_SLOTMAX && n < AMD64_MAX_MCTRL; i++) 120 if (pci_cfgregread(0, i, 3, 0, 4) == 0x11031022) { 121 sc->mctrl[n] = i; 122 n++; 123 } 124 125 if (n == 0) 126 return ENXIO; 127 128 sc->n_mctrl = n; 129 130 if (bootverbose) 131 printf("AMD64: %d Misc. Control unit(s) found.\n", sc->n_mctrl); 132 133 if ((error = agp_generic_attach(dev))) 134 return error; 135 136 sc->initial_aperture = AGP_GET_APERTURE(dev); 137 138 for (;;) { 139 gatt = agp_alloc_gatt(dev); 140 if (gatt) 141 break; 142 143 /* 144 * Probably contigmalloc failure. Try reducing the 145 * aperture so that the gatt size reduces. 146 */ 147 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) { 148 agp_generic_detach(dev); 149 return ENOMEM; 150 } 151 } 152 sc->gatt = gatt; 153 154 /* Install the gatt and enable aperture. */ 155 for (i = 0; i < sc->n_mctrl; i++) { 156 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_ATTBASE, 157 (uint32_t)(gatt->ag_physical >> 8) & AGP_AMD64_ATTBASE_MASK, 158 4); 159 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 160 (pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 4) | 161 AGP_AMD64_APCTRL_GARTEN) & 162 ~(AGP_AMD64_APCTRL_DISGARTCPU | AGP_AMD64_APCTRL_DISGARTIO), 163 4); 164 } 165 166 agp_flush_cache(); 167 168 return 0; 169 } 170 171 static int 172 agp_amd64_detach(device_t dev) 173 { 174 struct agp_amd64_softc *sc = device_get_softc(dev); 175 int i, error; 176 177 if ((error = agp_generic_detach(dev))) 178 return error; 179 180 for (i = 0; i < sc->n_mctrl; i++) 181 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 182 pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 4) & 183 ~AGP_AMD64_APCTRL_GARTEN, 4); 184 185 AGP_SET_APERTURE(dev, sc->initial_aperture); 186 agp_free_gatt(sc->gatt); 187 188 return 0; 189 } 190 191 static uint32_t agp_amd64_table[] = { 192 0x02000000, /* 32 MB */ 193 0x04000000, /* 64 MB */ 194 0x08000000, /* 128 MB */ 195 0x10000000, /* 256 MB */ 196 0x20000000, /* 512 MB */ 197 0x40000000, /* 1024 MB */ 198 0x80000000, /* 2048 MB */ 199 }; 200 201 #define AGP_AMD64_TABLE_SIZE \ 202 (sizeof(agp_amd64_table) / sizeof(agp_amd64_table[0])) 203 204 static uint32_t 205 agp_amd64_get_aperture(device_t dev) 206 { 207 struct agp_amd64_softc *sc = device_get_softc(dev); 208 uint32_t i; 209 210 i = (pci_cfgregread(0, sc->mctrl[0], 3, AGP_AMD64_APCTRL, 4) & 211 AGP_AMD64_APCTRL_SIZE_MASK) >> 1; 212 213 if (i >= AGP_AMD64_TABLE_SIZE) 214 return 0; 215 216 return (agp_amd64_table[i]); 217 } 218 219 static int 220 agp_amd64_set_aperture(device_t dev, uint32_t aperture) 221 { 222 struct agp_amd64_softc *sc = device_get_softc(dev); 223 uint32_t i; 224 int j; 225 226 for (i = 0; i < AGP_AMD64_TABLE_SIZE; i++) 227 if (agp_amd64_table[i] == aperture) 228 break; 229 if (i == AGP_AMD64_TABLE_SIZE) 230 return EINVAL; 231 232 for (j = 0; j < sc->n_mctrl; j++) 233 pci_cfgregwrite(0, sc->mctrl[j], 3, AGP_AMD64_APCTRL, 234 (pci_cfgregread(0, sc->mctrl[j], 3, AGP_AMD64_APCTRL, 4) & 235 ~(AGP_AMD64_APCTRL_SIZE_MASK)) | (i << 1), 4); 236 237 return 0; 238 } 239 240 static int 241 agp_amd64_bind_page(device_t dev, int offset, vm_offset_t physical) 242 { 243 struct agp_amd64_softc *sc = device_get_softc(dev); 244 245 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 246 return EINVAL; 247 248 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; 249 return 0; 250 } 251 252 static int 253 agp_amd64_unbind_page(device_t dev, int offset) 254 { 255 struct agp_amd64_softc *sc = device_get_softc(dev); 256 257 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 258 return EINVAL; 259 260 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 261 return 0; 262 } 263 264 static void 265 agp_amd64_flush_tlb(device_t dev) 266 { 267 struct agp_amd64_softc *sc = device_get_softc(dev); 268 int i; 269 270 for (i = 0; i < sc->n_mctrl; i++) 271 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_CACHECTRL, 272 pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_CACHECTRL, 4) | 273 AGP_AMD64_CACHECTRL_INVGART, 4); 274 } 275 276 static device_method_t agp_amd64_methods[] = { 277 /* Device interface */ 278 DEVMETHOD(device_probe, agp_amd64_probe), 279 DEVMETHOD(device_attach, agp_amd64_attach), 280 DEVMETHOD(device_detach, agp_amd64_detach), 281 DEVMETHOD(device_shutdown, bus_generic_shutdown), 282 DEVMETHOD(device_suspend, bus_generic_suspend), 283 DEVMETHOD(device_resume, bus_generic_resume), 284 285 /* AGP interface */ 286 DEVMETHOD(agp_get_aperture, agp_amd64_get_aperture), 287 DEVMETHOD(agp_set_aperture, agp_amd64_set_aperture), 288 DEVMETHOD(agp_bind_page, agp_amd64_bind_page), 289 DEVMETHOD(agp_unbind_page, agp_amd64_unbind_page), 290 DEVMETHOD(agp_flush_tlb, agp_amd64_flush_tlb), 291 DEVMETHOD(agp_enable, agp_generic_enable), 292 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), 293 DEVMETHOD(agp_free_memory, agp_generic_free_memory), 294 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), 295 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), 296 297 { 0, 0 } 298 }; 299 300 static driver_t agp_amd64_driver = { 301 "agp", 302 agp_amd64_methods, 303 sizeof(struct agp_amd64_softc), 304 }; 305 306 static devclass_t agp_devclass; 307 308 DRIVER_MODULE(agp_amd64, pci, agp_amd64_driver, agp_devclass, 0, 0); 309 MODULE_DEPEND(agp_amd64, agp, 1, 1, 1); 310 MODULE_DEPEND(agp_amd64, pci, 1, 1, 1); 311