agp_amd64.c revision 144517
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: head/sys/dev/agp/agp_amd64.c 144517 2005-04-02 01:10:09Z obrien $"); 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 */ 55extern void pci_cfgregwrite(int, int, int, int, uint32_t, int); 56extern uint32_t pci_cfgregread(int, int, int, int, int); 57 58MALLOC_DECLARE(M_AGP); 59 60#define AMD64_MAX_MCTRL 8 61 62struct 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 70static const char* 71agp_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 0x02041106: 88 return ("VIA 8380 host to PCI bridge"); 89 case 0x02821106: 90 return ("VIA K8T800Pro host to PCI bridge"); 91 case 0x31881106: 92 return ("VIA 8385 host to PCI bridge"); 93 }; 94 95 return NULL; 96} 97 98static int 99agp_amd64_probe(device_t dev) 100{ 101 const char *desc; 102 103 if (resource_disabled("agp", device_get_unit(dev))) 104 return ENXIO; 105 if ((desc = agp_amd64_match(dev))) { 106 device_verbose(dev); 107 device_set_desc(dev, desc); 108 return BUS_PROBE_DEFAULT; 109 } 110 111 return ENXIO; 112} 113 114static int 115agp_amd64_attach(device_t dev) 116{ 117 struct agp_amd64_softc *sc = device_get_softc(dev); 118 struct agp_gatt *gatt; 119 int i, n, error; 120 121 for (i = 0, n = 0; i < PCI_SLOTMAX && n < AMD64_MAX_MCTRL; i++) 122 if (pci_cfgregread(0, i, 3, 0, 4) == 0x11031022) { 123 sc->mctrl[n] = i; 124 n++; 125 } 126 127 if (n == 0) 128 return ENXIO; 129 130 sc->n_mctrl = n; 131 132 if (bootverbose) 133 printf("AMD64: %d Misc. Control unit(s) found.\n", sc->n_mctrl); 134 135 if ((error = agp_generic_attach(dev))) 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 and enable aperture. */ 157 for (i = 0; i < sc->n_mctrl; i++) { 158 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_ATTBASE, 159 (uint32_t)(gatt->ag_physical >> 8) & AGP_AMD64_ATTBASE_MASK, 160 4); 161 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 162 (pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 4) | 163 AGP_AMD64_APCTRL_GARTEN) & 164 ~(AGP_AMD64_APCTRL_DISGARTCPU | AGP_AMD64_APCTRL_DISGARTIO), 165 4); 166 } 167 168 agp_flush_cache(); 169 170 return 0; 171} 172 173static int 174agp_amd64_detach(device_t dev) 175{ 176 struct agp_amd64_softc *sc = device_get_softc(dev); 177 int i, error; 178 179 if ((error = agp_generic_detach(dev))) 180 return error; 181 182 for (i = 0; i < sc->n_mctrl; i++) 183 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 184 pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_APCTRL, 4) & 185 ~AGP_AMD64_APCTRL_GARTEN, 4); 186 187 AGP_SET_APERTURE(dev, sc->initial_aperture); 188 agp_free_gatt(sc->gatt); 189 190 return 0; 191} 192 193static uint32_t agp_amd64_table[] = { 194 0x02000000, /* 32 MB */ 195 0x04000000, /* 64 MB */ 196 0x08000000, /* 128 MB */ 197 0x10000000, /* 256 MB */ 198 0x20000000, /* 512 MB */ 199 0x40000000, /* 1024 MB */ 200 0x80000000, /* 2048 MB */ 201}; 202 203#define AGP_AMD64_TABLE_SIZE \ 204 (sizeof(agp_amd64_table) / sizeof(agp_amd64_table[0])) 205 206static uint32_t 207agp_amd64_get_aperture(device_t dev) 208{ 209 struct agp_amd64_softc *sc = device_get_softc(dev); 210 uint32_t i; 211 212 i = (pci_cfgregread(0, sc->mctrl[0], 3, AGP_AMD64_APCTRL, 4) & 213 AGP_AMD64_APCTRL_SIZE_MASK) >> 1; 214 215 if (i >= AGP_AMD64_TABLE_SIZE) 216 return 0; 217 218 return (agp_amd64_table[i]); 219} 220 221static int 222agp_amd64_set_aperture(device_t dev, uint32_t aperture) 223{ 224 struct agp_amd64_softc *sc = device_get_softc(dev); 225 uint32_t i; 226 int j; 227 228 for (i = 0; i < AGP_AMD64_TABLE_SIZE; i++) 229 if (agp_amd64_table[i] == aperture) 230 break; 231 if (i == AGP_AMD64_TABLE_SIZE) 232 return EINVAL; 233 234 for (j = 0; j < sc->n_mctrl; j++) 235 pci_cfgregwrite(0, sc->mctrl[j], 3, AGP_AMD64_APCTRL, 236 (pci_cfgregread(0, sc->mctrl[j], 3, AGP_AMD64_APCTRL, 4) & 237 ~(AGP_AMD64_APCTRL_SIZE_MASK)) | (i << 1), 4); 238 239 return 0; 240} 241 242static int 243agp_amd64_bind_page(device_t dev, int offset, vm_offset_t physical) 244{ 245 struct agp_amd64_softc *sc = device_get_softc(dev); 246 247 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 248 return EINVAL; 249 250 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; 251 return 0; 252} 253 254static int 255agp_amd64_unbind_page(device_t dev, int offset) 256{ 257 struct agp_amd64_softc *sc = device_get_softc(dev); 258 259 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 260 return EINVAL; 261 262 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 263 return 0; 264} 265 266static void 267agp_amd64_flush_tlb(device_t dev) 268{ 269 struct agp_amd64_softc *sc = device_get_softc(dev); 270 int i; 271 272 for (i = 0; i < sc->n_mctrl; i++) 273 pci_cfgregwrite(0, sc->mctrl[i], 3, AGP_AMD64_CACHECTRL, 274 pci_cfgregread(0, sc->mctrl[i], 3, AGP_AMD64_CACHECTRL, 4) | 275 AGP_AMD64_CACHECTRL_INVGART, 4); 276} 277 278static device_method_t agp_amd64_methods[] = { 279 /* Device interface */ 280 DEVMETHOD(device_probe, agp_amd64_probe), 281 DEVMETHOD(device_attach, agp_amd64_attach), 282 DEVMETHOD(device_detach, agp_amd64_detach), 283 DEVMETHOD(device_shutdown, bus_generic_shutdown), 284 DEVMETHOD(device_suspend, bus_generic_suspend), 285 DEVMETHOD(device_resume, bus_generic_resume), 286 287 /* AGP interface */ 288 DEVMETHOD(agp_get_aperture, agp_amd64_get_aperture), 289 DEVMETHOD(agp_set_aperture, agp_amd64_set_aperture), 290 DEVMETHOD(agp_bind_page, agp_amd64_bind_page), 291 DEVMETHOD(agp_unbind_page, agp_amd64_unbind_page), 292 DEVMETHOD(agp_flush_tlb, agp_amd64_flush_tlb), 293 DEVMETHOD(agp_enable, agp_generic_enable), 294 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), 295 DEVMETHOD(agp_free_memory, agp_generic_free_memory), 296 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), 297 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), 298 299 { 0, 0 } 300}; 301 302static driver_t agp_amd64_driver = { 303 "agp", 304 agp_amd64_methods, 305 sizeof(struct agp_amd64_softc), 306}; 307 308static devclass_t agp_devclass; 309 310DRIVER_MODULE(agp_amd64, pci, agp_amd64_driver, agp_devclass, 0, 0); 311MODULE_DEPEND(agp_amd64, agp, 1, 1, 1); 312MODULE_DEPEND(agp_amd64, pci, 1, 1, 1); 313