agp.c revision 1.10.2.10
1 1.10.2.10 nathanw /* $NetBSD: agp.c,v 1.10.2.10 2002/11/11 22:11:00 nathanw Exp $ */ 2 1.10.2.2 nathanw 3 1.10.2.2 nathanw /*- 4 1.10.2.2 nathanw * Copyright (c) 2000 Doug Rabson 5 1.10.2.2 nathanw * All rights reserved. 6 1.10.2.2 nathanw * 7 1.10.2.2 nathanw * Redistribution and use in source and binary forms, with or without 8 1.10.2.2 nathanw * modification, are permitted provided that the following conditions 9 1.10.2.2 nathanw * are met: 10 1.10.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 11 1.10.2.2 nathanw * notice, this list of conditions and the following disclaimer. 12 1.10.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 13 1.10.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 14 1.10.2.2 nathanw * documentation and/or other materials provided with the distribution. 15 1.10.2.2 nathanw * 16 1.10.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 1.10.2.2 nathanw * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 1.10.2.2 nathanw * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 1.10.2.2 nathanw * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 1.10.2.2 nathanw * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 1.10.2.2 nathanw * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 1.10.2.2 nathanw * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 1.10.2.2 nathanw * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 1.10.2.2 nathanw * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.10.2.2 nathanw * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.10.2.2 nathanw * SUCH DAMAGE. 27 1.10.2.2 nathanw * 28 1.10.2.2 nathanw * $FreeBSD: src/sys/pci/agp.c,v 1.12 2001/05/19 01:28:07 alfred Exp $ 29 1.10.2.2 nathanw */ 30 1.10.2.2 nathanw 31 1.10.2.2 nathanw /* 32 1.10.2.2 nathanw * Copyright (c) 2001 Wasabi Systems, Inc. 33 1.10.2.2 nathanw * All rights reserved. 34 1.10.2.2 nathanw * 35 1.10.2.2 nathanw * Written by Frank van der Linden for Wasabi Systems, Inc. 36 1.10.2.2 nathanw * 37 1.10.2.2 nathanw * Redistribution and use in source and binary forms, with or without 38 1.10.2.2 nathanw * modification, are permitted provided that the following conditions 39 1.10.2.2 nathanw * are met: 40 1.10.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 41 1.10.2.2 nathanw * notice, this list of conditions and the following disclaimer. 42 1.10.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 43 1.10.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 44 1.10.2.2 nathanw * documentation and/or other materials provided with the distribution. 45 1.10.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 46 1.10.2.2 nathanw * must display the following acknowledgement: 47 1.10.2.2 nathanw * This product includes software developed for the NetBSD Project by 48 1.10.2.2 nathanw * Wasabi Systems, Inc. 49 1.10.2.2 nathanw * 4. The name of Wasabi Systems, Inc. may not be used to endorse 50 1.10.2.2 nathanw * or promote products derived from this software without specific prior 51 1.10.2.2 nathanw * written permission. 52 1.10.2.2 nathanw * 53 1.10.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 54 1.10.2.2 nathanw * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 55 1.10.2.2 nathanw * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 56 1.10.2.2 nathanw * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 57 1.10.2.2 nathanw * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 58 1.10.2.2 nathanw * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 59 1.10.2.2 nathanw * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 60 1.10.2.2 nathanw * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 61 1.10.2.2 nathanw * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 62 1.10.2.2 nathanw * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 63 1.10.2.2 nathanw * POSSIBILITY OF SUCH DAMAGE. 64 1.10.2.2 nathanw */ 65 1.10.2.2 nathanw 66 1.10.2.2 nathanw 67 1.10.2.4 nathanw #include <sys/cdefs.h> 68 1.10.2.10 nathanw __KERNEL_RCSID(0, "$NetBSD: agp.c,v 1.10.2.10 2002/11/11 22:11:00 nathanw Exp $"); 69 1.10.2.4 nathanw 70 1.10.2.2 nathanw #include <sys/param.h> 71 1.10.2.2 nathanw #include <sys/systm.h> 72 1.10.2.2 nathanw #include <sys/malloc.h> 73 1.10.2.2 nathanw #include <sys/kernel.h> 74 1.10.2.2 nathanw #include <sys/device.h> 75 1.10.2.2 nathanw #include <sys/conf.h> 76 1.10.2.2 nathanw #include <sys/ioctl.h> 77 1.10.2.2 nathanw #include <sys/fcntl.h> 78 1.10.2.2 nathanw #include <sys/agpio.h> 79 1.10.2.2 nathanw #include <sys/proc.h> 80 1.10.2.2 nathanw 81 1.10.2.2 nathanw #include <uvm/uvm_extern.h> 82 1.10.2.2 nathanw 83 1.10.2.2 nathanw #include <dev/pci/pcireg.h> 84 1.10.2.2 nathanw #include <dev/pci/pcivar.h> 85 1.10.2.2 nathanw #include <dev/pci/agpvar.h> 86 1.10.2.2 nathanw #include <dev/pci/agpreg.h> 87 1.10.2.2 nathanw #include <dev/pci/pcidevs.h> 88 1.10.2.2 nathanw 89 1.10.2.2 nathanw #include <machine/bus.h> 90 1.10.2.2 nathanw 91 1.10.2.2 nathanw /* Helper functions for implementing chipset mini drivers. */ 92 1.10.2.2 nathanw /* XXXfvdl get rid of this one. */ 93 1.10.2.2 nathanw 94 1.10.2.2 nathanw extern struct cfdriver agp_cd; 95 1.10.2.8 nathanw 96 1.10.2.8 nathanw dev_type_open(agpopen); 97 1.10.2.8 nathanw dev_type_close(agpclose); 98 1.10.2.8 nathanw dev_type_ioctl(agpioctl); 99 1.10.2.8 nathanw dev_type_mmap(agpmmap); 100 1.10.2.8 nathanw 101 1.10.2.8 nathanw const struct cdevsw agp_cdevsw = { 102 1.10.2.8 nathanw agpopen, agpclose, noread, nowrite, agpioctl, 103 1.10.2.10 nathanw nostop, notty, nopoll, agpmmap, nokqfilter, 104 1.10.2.8 nathanw }; 105 1.10.2.2 nathanw 106 1.10.2.2 nathanw int agpmatch(struct device *, struct cfdata *, void *); 107 1.10.2.2 nathanw void agpattach(struct device *, struct device *, void *); 108 1.10.2.2 nathanw 109 1.10.2.9 nathanw CFATTACH_DECL(agp, sizeof(struct agp_softc), 110 1.10.2.9 nathanw agpmatch, agpattach, NULL, NULL); 111 1.10.2.2 nathanw 112 1.10.2.2 nathanw static int agp_info_user(struct agp_softc *, agp_info *); 113 1.10.2.2 nathanw static int agp_setup_user(struct agp_softc *, agp_setup *); 114 1.10.2.2 nathanw static int agp_allocate_user(struct agp_softc *, agp_allocate *); 115 1.10.2.2 nathanw static int agp_deallocate_user(struct agp_softc *, int); 116 1.10.2.2 nathanw static int agp_bind_user(struct agp_softc *, agp_bind *); 117 1.10.2.2 nathanw static int agp_unbind_user(struct agp_softc *, agp_unbind *); 118 1.10.2.2 nathanw static int agpdev_match(struct pci_attach_args *); 119 1.10.2.2 nathanw 120 1.10.2.2 nathanw #include "agp_ali.h" 121 1.10.2.2 nathanw #include "agp_amd.h" 122 1.10.2.2 nathanw #include "agp_i810.h" 123 1.10.2.2 nathanw #include "agp_intel.h" 124 1.10.2.2 nathanw #include "agp_sis.h" 125 1.10.2.2 nathanw #include "agp_via.h" 126 1.10.2.2 nathanw 127 1.10.2.2 nathanw const struct agp_product { 128 1.10.2.2 nathanw uint32_t ap_vendor; 129 1.10.2.2 nathanw uint32_t ap_product; 130 1.10.2.2 nathanw int (*ap_match)(const struct pci_attach_args *); 131 1.10.2.2 nathanw int (*ap_attach)(struct device *, struct device *, void *); 132 1.10.2.2 nathanw } agp_products[] = { 133 1.10.2.2 nathanw #if NAGP_ALI > 0 134 1.10.2.2 nathanw { PCI_VENDOR_ALI, -1, 135 1.10.2.2 nathanw NULL, agp_ali_attach }, 136 1.10.2.2 nathanw #endif 137 1.10.2.2 nathanw 138 1.10.2.2 nathanw #if NAGP_AMD > 0 139 1.10.2.2 nathanw { PCI_VENDOR_AMD, -1, 140 1.10.2.2 nathanw agp_amd_match, agp_amd_attach }, 141 1.10.2.2 nathanw #endif 142 1.10.2.2 nathanw 143 1.10.2.2 nathanw #if NAGP_I810 > 0 144 1.10.2.2 nathanw { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_82810_MCH, 145 1.10.2.2 nathanw NULL, agp_i810_attach }, 146 1.10.2.2 nathanw { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_82810_DC100_MCH, 147 1.10.2.2 nathanw NULL, agp_i810_attach }, 148 1.10.2.2 nathanw { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_82810E_MCH, 149 1.10.2.2 nathanw NULL, agp_i810_attach }, 150 1.10.2.2 nathanw { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_82815_FULL_HUB, 151 1.10.2.2 nathanw NULL, agp_i810_attach }, 152 1.10.2.3 nathanw { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_82840_HB, 153 1.10.2.3 nathanw NULL, agp_i810_attach }, 154 1.10.2.5 nathanw #if 0 155 1.10.2.5 nathanw /* XXX needs somewhat different driver */ 156 1.10.2.5 nathanw { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_82830MP_IO_1, 157 1.10.2.5 nathanw NULL, agp_i810_attach }, 158 1.10.2.5 nathanw #endif 159 1.10.2.2 nathanw #endif 160 1.10.2.2 nathanw 161 1.10.2.2 nathanw #if NAGP_INTEL > 0 162 1.10.2.2 nathanw { PCI_VENDOR_INTEL, -1, 163 1.10.2.2 nathanw NULL, agp_intel_attach }, 164 1.10.2.2 nathanw #endif 165 1.10.2.2 nathanw 166 1.10.2.2 nathanw #if NAGP_SIS > 0 167 1.10.2.2 nathanw { PCI_VENDOR_SIS, -1, 168 1.10.2.2 nathanw NULL, agp_sis_attach }, 169 1.10.2.2 nathanw #endif 170 1.10.2.2 nathanw 171 1.10.2.2 nathanw #if NAGP_VIA > 0 172 1.10.2.2 nathanw { PCI_VENDOR_VIATECH, -1, 173 1.10.2.2 nathanw NULL, agp_via_attach }, 174 1.10.2.2 nathanw #endif 175 1.10.2.2 nathanw 176 1.10.2.2 nathanw { 0, 0, 177 1.10.2.2 nathanw NULL, NULL }, 178 1.10.2.2 nathanw }; 179 1.10.2.2 nathanw 180 1.10.2.2 nathanw static const struct agp_product * 181 1.10.2.2 nathanw agp_lookup(const struct pci_attach_args *pa) 182 1.10.2.2 nathanw { 183 1.10.2.2 nathanw const struct agp_product *ap; 184 1.10.2.2 nathanw 185 1.10.2.2 nathanw /* First find the vendor. */ 186 1.10.2.2 nathanw for (ap = agp_products; ap->ap_attach != NULL; ap++) { 187 1.10.2.2 nathanw if (PCI_VENDOR(pa->pa_id) == ap->ap_vendor) 188 1.10.2.2 nathanw break; 189 1.10.2.2 nathanw } 190 1.10.2.2 nathanw 191 1.10.2.2 nathanw if (ap->ap_attach == NULL) 192 1.10.2.2 nathanw return (NULL); 193 1.10.2.2 nathanw 194 1.10.2.2 nathanw /* Now find the product within the vendor's domain. */ 195 1.10.2.2 nathanw for (; ap->ap_attach != NULL; ap++) { 196 1.10.2.2 nathanw if (PCI_VENDOR(pa->pa_id) != ap->ap_vendor) { 197 1.10.2.2 nathanw /* Ran out of this vendor's section of the table. */ 198 1.10.2.2 nathanw return (NULL); 199 1.10.2.2 nathanw } 200 1.10.2.2 nathanw if (ap->ap_product == PCI_PRODUCT(pa->pa_id)) { 201 1.10.2.2 nathanw /* Exact match. */ 202 1.10.2.2 nathanw break; 203 1.10.2.2 nathanw } 204 1.10.2.2 nathanw if (ap->ap_product == (uint32_t) -1) { 205 1.10.2.2 nathanw /* Wildcard match. */ 206 1.10.2.2 nathanw break; 207 1.10.2.2 nathanw } 208 1.10.2.2 nathanw } 209 1.10.2.2 nathanw 210 1.10.2.2 nathanw if (ap->ap_attach == NULL) 211 1.10.2.2 nathanw return (NULL); 212 1.10.2.2 nathanw 213 1.10.2.2 nathanw /* Now let the product-specific driver filter the match. */ 214 1.10.2.2 nathanw if (ap->ap_match != NULL && (*ap->ap_match)(pa) == 0) 215 1.10.2.2 nathanw return (NULL); 216 1.10.2.2 nathanw 217 1.10.2.2 nathanw return (ap); 218 1.10.2.2 nathanw } 219 1.10.2.2 nathanw 220 1.10.2.2 nathanw int 221 1.10.2.2 nathanw agpmatch(struct device *parent, struct cfdata *match, void *aux) 222 1.10.2.2 nathanw { 223 1.10.2.2 nathanw struct agpbus_attach_args *apa = aux; 224 1.10.2.2 nathanw struct pci_attach_args *pa = &apa->apa_pci_args; 225 1.10.2.2 nathanw 226 1.10.2.2 nathanw if (strcmp(apa->apa_busname, "agp") != 0) 227 1.10.2.2 nathanw return (0); 228 1.10.2.2 nathanw 229 1.10.2.2 nathanw if (agp_lookup(pa) == NULL) 230 1.10.2.2 nathanw return (0); 231 1.10.2.2 nathanw 232 1.10.2.2 nathanw return (1); 233 1.10.2.2 nathanw } 234 1.10.2.2 nathanw 235 1.10.2.2 nathanw static int agp_max[][2] = { 236 1.10.2.2 nathanw {0, 0}, 237 1.10.2.2 nathanw {32, 4}, 238 1.10.2.2 nathanw {64, 28}, 239 1.10.2.2 nathanw {128, 96}, 240 1.10.2.2 nathanw {256, 204}, 241 1.10.2.2 nathanw {512, 440}, 242 1.10.2.2 nathanw {1024, 942}, 243 1.10.2.2 nathanw {2048, 1920}, 244 1.10.2.2 nathanw {4096, 3932} 245 1.10.2.2 nathanw }; 246 1.10.2.2 nathanw #define agp_max_size (sizeof(agp_max) / sizeof(agp_max[0])) 247 1.10.2.2 nathanw 248 1.10.2.2 nathanw void 249 1.10.2.2 nathanw agpattach(struct device *parent, struct device *self, void *aux) 250 1.10.2.2 nathanw { 251 1.10.2.2 nathanw struct agpbus_attach_args *apa = aux; 252 1.10.2.2 nathanw struct pci_attach_args *pa = &apa->apa_pci_args; 253 1.10.2.2 nathanw struct agp_softc *sc = (void *)self; 254 1.10.2.2 nathanw const struct agp_product *ap; 255 1.10.2.2 nathanw int memsize, i, ret; 256 1.10.2.2 nathanw 257 1.10.2.2 nathanw ap = agp_lookup(pa); 258 1.10.2.2 nathanw if (ap == NULL) { 259 1.10.2.2 nathanw printf("\n"); 260 1.10.2.2 nathanw panic("agpattach: impossible"); 261 1.10.2.2 nathanw } 262 1.10.2.2 nathanw 263 1.10.2.2 nathanw sc->as_dmat = pa->pa_dmat; 264 1.10.2.2 nathanw sc->as_pc = pa->pa_pc; 265 1.10.2.2 nathanw sc->as_tag = pa->pa_tag; 266 1.10.2.2 nathanw sc->as_id = pa->pa_id; 267 1.10.2.2 nathanw 268 1.10.2.2 nathanw /* 269 1.10.2.2 nathanw * Work out an upper bound for agp memory allocation. This 270 1.10.2.2 nathanw * uses a heurisitc table from the Linux driver. 271 1.10.2.2 nathanw */ 272 1.10.2.2 nathanw memsize = ptoa(physmem) >> 20; 273 1.10.2.2 nathanw for (i = 0; i < agp_max_size; i++) { 274 1.10.2.2 nathanw if (memsize <= agp_max[i][0]) 275 1.10.2.2 nathanw break; 276 1.10.2.2 nathanw } 277 1.10.2.2 nathanw if (i == agp_max_size) 278 1.10.2.2 nathanw i = agp_max_size - 1; 279 1.10.2.2 nathanw sc->as_maxmem = agp_max[i][1] << 20U; 280 1.10.2.2 nathanw 281 1.10.2.2 nathanw /* 282 1.10.2.2 nathanw * The lock is used to prevent re-entry to 283 1.10.2.2 nathanw * agp_generic_bind_memory() since that function can sleep. 284 1.10.2.2 nathanw */ 285 1.10.2.2 nathanw lockinit(&sc->as_lock, PZERO|PCATCH, "agplk", 0, 0); 286 1.10.2.2 nathanw 287 1.10.2.2 nathanw TAILQ_INIT(&sc->as_memory); 288 1.10.2.2 nathanw 289 1.10.2.2 nathanw ret = (*ap->ap_attach)(parent, self, pa); 290 1.10.2.2 nathanw if (ret == 0) 291 1.10.2.2 nathanw printf(": aperture at 0x%lx, size 0x%lx\n", 292 1.10.2.2 nathanw (unsigned long)sc->as_apaddr, 293 1.10.2.2 nathanw (unsigned long)AGP_GET_APERTURE(sc)); 294 1.10.2.2 nathanw else 295 1.10.2.2 nathanw sc->as_chipc = NULL; 296 1.10.2.2 nathanw } 297 1.10.2.2 nathanw int 298 1.10.2.2 nathanw agp_map_aperture(struct pci_attach_args *pa, struct agp_softc *sc) 299 1.10.2.2 nathanw { 300 1.10.2.2 nathanw /* 301 1.10.2.9 nathanw * Find the aperture. Don't map it (yet), this would 302 1.10.2.3 nathanw * eat KVA. 303 1.10.2.2 nathanw */ 304 1.10.2.3 nathanw if (pci_mapreg_info(pa->pa_pc, pa->pa_tag, AGP_APBASE, 305 1.10.2.3 nathanw PCI_MAPREG_TYPE_MEM, &sc->as_apaddr, &sc->as_apsize, 306 1.10.2.3 nathanw &sc->as_apflags) != 0) 307 1.10.2.2 nathanw return ENXIO; 308 1.10.2.2 nathanw 309 1.10.2.3 nathanw sc->as_apt = pa->pa_memt; 310 1.10.2.3 nathanw 311 1.10.2.2 nathanw return 0; 312 1.10.2.2 nathanw } 313 1.10.2.2 nathanw 314 1.10.2.2 nathanw struct agp_gatt * 315 1.10.2.2 nathanw agp_alloc_gatt(struct agp_softc *sc) 316 1.10.2.2 nathanw { 317 1.10.2.2 nathanw u_int32_t apsize = AGP_GET_APERTURE(sc); 318 1.10.2.2 nathanw u_int32_t entries = apsize >> AGP_PAGE_SHIFT; 319 1.10.2.2 nathanw struct agp_gatt *gatt; 320 1.10.2.2 nathanw int dummyseg; 321 1.10.2.2 nathanw 322 1.10.2.2 nathanw gatt = malloc(sizeof(struct agp_gatt), M_AGP, M_NOWAIT); 323 1.10.2.2 nathanw if (!gatt) 324 1.10.2.2 nathanw return NULL; 325 1.10.2.2 nathanw gatt->ag_entries = entries; 326 1.10.2.2 nathanw 327 1.10.2.2 nathanw if (agp_alloc_dmamem(sc->as_dmat, entries * sizeof(u_int32_t), 328 1.10.2.2 nathanw 0, &gatt->ag_dmamap, (caddr_t *)&gatt->ag_virtual, 329 1.10.2.2 nathanw &gatt->ag_physical, &gatt->ag_dmaseg, 1, &dummyseg) != 0) 330 1.10.2.2 nathanw return NULL; 331 1.10.2.2 nathanw 332 1.10.2.2 nathanw gatt->ag_size = entries * sizeof(u_int32_t); 333 1.10.2.2 nathanw memset(gatt->ag_virtual, 0, gatt->ag_size); 334 1.10.2.2 nathanw agp_flush_cache(); 335 1.10.2.2 nathanw 336 1.10.2.2 nathanw return gatt; 337 1.10.2.2 nathanw } 338 1.10.2.2 nathanw 339 1.10.2.2 nathanw void 340 1.10.2.2 nathanw agp_free_gatt(struct agp_softc *sc, struct agp_gatt *gatt) 341 1.10.2.2 nathanw { 342 1.10.2.2 nathanw agp_free_dmamem(sc->as_dmat, gatt->ag_size, gatt->ag_dmamap, 343 1.10.2.2 nathanw (caddr_t)gatt->ag_virtual, &gatt->ag_dmaseg, 1); 344 1.10.2.2 nathanw free(gatt, M_AGP); 345 1.10.2.2 nathanw } 346 1.10.2.2 nathanw 347 1.10.2.2 nathanw 348 1.10.2.2 nathanw int 349 1.10.2.2 nathanw agp_generic_detach(struct agp_softc *sc) 350 1.10.2.2 nathanw { 351 1.10.2.2 nathanw lockmgr(&sc->as_lock, LK_DRAIN, 0); 352 1.10.2.2 nathanw agp_flush_cache(); 353 1.10.2.2 nathanw return 0; 354 1.10.2.2 nathanw } 355 1.10.2.2 nathanw 356 1.10.2.2 nathanw static int 357 1.10.2.2 nathanw agpdev_match(struct pci_attach_args *pa) 358 1.10.2.2 nathanw { 359 1.10.2.2 nathanw if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY && 360 1.10.2.2 nathanw PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_DISPLAY_VGA) 361 1.10.2.2 nathanw return 1; 362 1.10.2.2 nathanw 363 1.10.2.2 nathanw return 0; 364 1.10.2.2 nathanw } 365 1.10.2.2 nathanw 366 1.10.2.2 nathanw int 367 1.10.2.2 nathanw agp_generic_enable(struct agp_softc *sc, u_int32_t mode) 368 1.10.2.2 nathanw { 369 1.10.2.2 nathanw struct pci_attach_args pa; 370 1.10.2.2 nathanw pcireg_t tstatus, mstatus; 371 1.10.2.2 nathanw pcireg_t command; 372 1.10.2.2 nathanw int rq, sba, fw, rate, capoff; 373 1.10.2.2 nathanw 374 1.10.2.2 nathanw if (pci_find_device(&pa, agpdev_match) == 0 || 375 1.10.2.2 nathanw pci_get_capability(pa.pa_pc, pa.pa_tag, PCI_CAP_AGP, 376 1.10.2.2 nathanw &capoff, NULL) == 0) { 377 1.10.2.2 nathanw printf("%s: can't find display\n", sc->as_dev.dv_xname); 378 1.10.2.2 nathanw return ENXIO; 379 1.10.2.2 nathanw } 380 1.10.2.2 nathanw 381 1.10.2.2 nathanw tstatus = pci_conf_read(sc->as_pc, sc->as_tag, 382 1.10.2.2 nathanw sc->as_capoff + AGP_STATUS); 383 1.10.2.2 nathanw mstatus = pci_conf_read(pa.pa_pc, pa.pa_tag, 384 1.10.2.2 nathanw capoff + AGP_STATUS); 385 1.10.2.2 nathanw 386 1.10.2.2 nathanw /* Set RQ to the min of mode, tstatus and mstatus */ 387 1.10.2.2 nathanw rq = AGP_MODE_GET_RQ(mode); 388 1.10.2.2 nathanw if (AGP_MODE_GET_RQ(tstatus) < rq) 389 1.10.2.2 nathanw rq = AGP_MODE_GET_RQ(tstatus); 390 1.10.2.2 nathanw if (AGP_MODE_GET_RQ(mstatus) < rq) 391 1.10.2.2 nathanw rq = AGP_MODE_GET_RQ(mstatus); 392 1.10.2.2 nathanw 393 1.10.2.2 nathanw /* Set SBA if all three can deal with SBA */ 394 1.10.2.2 nathanw sba = (AGP_MODE_GET_SBA(tstatus) 395 1.10.2.2 nathanw & AGP_MODE_GET_SBA(mstatus) 396 1.10.2.2 nathanw & AGP_MODE_GET_SBA(mode)); 397 1.10.2.2 nathanw 398 1.10.2.2 nathanw /* Similar for FW */ 399 1.10.2.2 nathanw fw = (AGP_MODE_GET_FW(tstatus) 400 1.10.2.2 nathanw & AGP_MODE_GET_FW(mstatus) 401 1.10.2.2 nathanw & AGP_MODE_GET_FW(mode)); 402 1.10.2.2 nathanw 403 1.10.2.2 nathanw /* Figure out the max rate */ 404 1.10.2.2 nathanw rate = (AGP_MODE_GET_RATE(tstatus) 405 1.10.2.2 nathanw & AGP_MODE_GET_RATE(mstatus) 406 1.10.2.2 nathanw & AGP_MODE_GET_RATE(mode)); 407 1.10.2.2 nathanw if (rate & AGP_MODE_RATE_4x) 408 1.10.2.2 nathanw rate = AGP_MODE_RATE_4x; 409 1.10.2.2 nathanw else if (rate & AGP_MODE_RATE_2x) 410 1.10.2.2 nathanw rate = AGP_MODE_RATE_2x; 411 1.10.2.2 nathanw else 412 1.10.2.2 nathanw rate = AGP_MODE_RATE_1x; 413 1.10.2.2 nathanw 414 1.10.2.2 nathanw /* Construct the new mode word and tell the hardware */ 415 1.10.2.2 nathanw command = AGP_MODE_SET_RQ(0, rq); 416 1.10.2.2 nathanw command = AGP_MODE_SET_SBA(command, sba); 417 1.10.2.2 nathanw command = AGP_MODE_SET_FW(command, fw); 418 1.10.2.2 nathanw command = AGP_MODE_SET_RATE(command, rate); 419 1.10.2.2 nathanw command = AGP_MODE_SET_AGP(command, 1); 420 1.10.2.2 nathanw pci_conf_write(sc->as_pc, sc->as_tag, 421 1.10.2.2 nathanw sc->as_capoff + AGP_COMMAND, command); 422 1.10.2.2 nathanw pci_conf_write(pa.pa_pc, pa.pa_tag, capoff + AGP_COMMAND, command); 423 1.10.2.2 nathanw 424 1.10.2.2 nathanw return 0; 425 1.10.2.2 nathanw } 426 1.10.2.2 nathanw 427 1.10.2.2 nathanw struct agp_memory * 428 1.10.2.2 nathanw agp_generic_alloc_memory(struct agp_softc *sc, int type, vsize_t size) 429 1.10.2.2 nathanw { 430 1.10.2.2 nathanw struct agp_memory *mem; 431 1.10.2.2 nathanw 432 1.10.2.2 nathanw if ((size & (AGP_PAGE_SIZE - 1)) != 0) 433 1.10.2.2 nathanw return 0; 434 1.10.2.2 nathanw 435 1.10.2.2 nathanw if (sc->as_allocated + size > sc->as_maxmem) 436 1.10.2.2 nathanw return 0; 437 1.10.2.2 nathanw 438 1.10.2.2 nathanw if (type != 0) { 439 1.10.2.2 nathanw printf("agp_generic_alloc_memory: unsupported type %d\n", 440 1.10.2.2 nathanw type); 441 1.10.2.2 nathanw return 0; 442 1.10.2.2 nathanw } 443 1.10.2.2 nathanw 444 1.10.2.2 nathanw mem = malloc(sizeof *mem, M_AGP, M_WAITOK); 445 1.10.2.2 nathanw if (mem == NULL) 446 1.10.2.2 nathanw return NULL; 447 1.10.2.2 nathanw 448 1.10.2.2 nathanw if (bus_dmamap_create(sc->as_dmat, size, size / PAGE_SIZE + 1, 449 1.10.2.2 nathanw size, 0, BUS_DMA_NOWAIT, &mem->am_dmamap) != 0) { 450 1.10.2.2 nathanw free(mem, M_AGP); 451 1.10.2.2 nathanw return NULL; 452 1.10.2.2 nathanw } 453 1.10.2.2 nathanw 454 1.10.2.2 nathanw mem->am_id = sc->as_nextid++; 455 1.10.2.2 nathanw mem->am_size = size; 456 1.10.2.2 nathanw mem->am_type = 0; 457 1.10.2.2 nathanw mem->am_physical = 0; 458 1.10.2.2 nathanw mem->am_offset = 0; 459 1.10.2.2 nathanw mem->am_is_bound = 0; 460 1.10.2.2 nathanw TAILQ_INSERT_TAIL(&sc->as_memory, mem, am_link); 461 1.10.2.2 nathanw sc->as_allocated += size; 462 1.10.2.2 nathanw 463 1.10.2.2 nathanw return mem; 464 1.10.2.2 nathanw } 465 1.10.2.2 nathanw 466 1.10.2.2 nathanw int 467 1.10.2.2 nathanw agp_generic_free_memory(struct agp_softc *sc, struct agp_memory *mem) 468 1.10.2.2 nathanw { 469 1.10.2.2 nathanw if (mem->am_is_bound) 470 1.10.2.2 nathanw return EBUSY; 471 1.10.2.2 nathanw 472 1.10.2.2 nathanw sc->as_allocated -= mem->am_size; 473 1.10.2.2 nathanw TAILQ_REMOVE(&sc->as_memory, mem, am_link); 474 1.10.2.2 nathanw bus_dmamap_destroy(sc->as_dmat, mem->am_dmamap); 475 1.10.2.2 nathanw free(mem, M_AGP); 476 1.10.2.2 nathanw return 0; 477 1.10.2.2 nathanw } 478 1.10.2.2 nathanw 479 1.10.2.2 nathanw int 480 1.10.2.2 nathanw agp_generic_bind_memory(struct agp_softc *sc, struct agp_memory *mem, 481 1.10.2.2 nathanw off_t offset) 482 1.10.2.2 nathanw { 483 1.10.2.2 nathanw off_t i, k; 484 1.10.2.2 nathanw bus_size_t done, j; 485 1.10.2.2 nathanw int error; 486 1.10.2.2 nathanw bus_dma_segment_t *segs, *seg; 487 1.10.2.2 nathanw bus_addr_t pa; 488 1.10.2.2 nathanw int contigpages, nseg; 489 1.10.2.2 nathanw 490 1.10.2.2 nathanw lockmgr(&sc->as_lock, LK_EXCLUSIVE, 0); 491 1.10.2.2 nathanw 492 1.10.2.2 nathanw if (mem->am_is_bound) { 493 1.10.2.2 nathanw printf("%s: memory already bound\n", sc->as_dev.dv_xname); 494 1.10.2.2 nathanw lockmgr(&sc->as_lock, LK_RELEASE, 0); 495 1.10.2.2 nathanw return EINVAL; 496 1.10.2.2 nathanw } 497 1.10.2.2 nathanw 498 1.10.2.2 nathanw if (offset < 0 499 1.10.2.2 nathanw || (offset & (AGP_PAGE_SIZE - 1)) != 0 500 1.10.2.2 nathanw || offset + mem->am_size > AGP_GET_APERTURE(sc)) { 501 1.10.2.2 nathanw printf("%s: binding memory at bad offset %#lx\n", 502 1.10.2.2 nathanw sc->as_dev.dv_xname, (unsigned long) offset); 503 1.10.2.2 nathanw lockmgr(&sc->as_lock, LK_RELEASE, 0); 504 1.10.2.2 nathanw return EINVAL; 505 1.10.2.2 nathanw } 506 1.10.2.2 nathanw 507 1.10.2.2 nathanw /* 508 1.10.2.2 nathanw * XXXfvdl 509 1.10.2.2 nathanw * The memory here needs to be directly accessable from the 510 1.10.2.2 nathanw * AGP video card, so it should be allocated using bus_dma. 511 1.10.2.2 nathanw * However, it need not be contiguous, since individual pages 512 1.10.2.2 nathanw * are translated using the GATT. 513 1.10.2.2 nathanw * 514 1.10.2.2 nathanw * Using a large chunk of contiguous memory may get in the way 515 1.10.2.2 nathanw * of other subsystems that may need one, so we try to be friendly 516 1.10.2.2 nathanw * and ask for allocation in chunks of a minimum of 8 pages 517 1.10.2.2 nathanw * of contiguous memory on average, falling back to 4, 2 and 1 518 1.10.2.2 nathanw * if really needed. Larger chunks are preferred, since allocating 519 1.10.2.2 nathanw * a bus_dma_segment per page would be overkill. 520 1.10.2.2 nathanw */ 521 1.10.2.2 nathanw 522 1.10.2.2 nathanw for (contigpages = 8; contigpages > 0; contigpages >>= 1) { 523 1.10.2.2 nathanw nseg = (mem->am_size / (contigpages * PAGE_SIZE)) + 1; 524 1.10.2.2 nathanw segs = malloc(nseg * sizeof *segs, M_AGP, M_WAITOK); 525 1.10.2.7 nathanw if (segs == NULL) { 526 1.10.2.7 nathanw lockmgr(&sc->as_lock, LK_RELEASE, 0); 527 1.10.2.2 nathanw return ENOMEM; 528 1.10.2.7 nathanw } 529 1.10.2.2 nathanw if (bus_dmamem_alloc(sc->as_dmat, mem->am_size, PAGE_SIZE, 0, 530 1.10.2.2 nathanw segs, nseg, &mem->am_nseg, 531 1.10.2.6 nathanw contigpages > 1 ? 532 1.10.2.6 nathanw BUS_DMA_NOWAIT : BUS_DMA_WAITOK) != 0) { 533 1.10.2.2 nathanw free(segs, M_AGP); 534 1.10.2.2 nathanw continue; 535 1.10.2.2 nathanw } 536 1.10.2.2 nathanw if (bus_dmamem_map(sc->as_dmat, segs, mem->am_nseg, 537 1.10.2.2 nathanw mem->am_size, &mem->am_virtual, BUS_DMA_WAITOK) != 0) { 538 1.10.2.2 nathanw bus_dmamem_free(sc->as_dmat, segs, mem->am_nseg); 539 1.10.2.2 nathanw free(segs, M_AGP); 540 1.10.2.2 nathanw continue; 541 1.10.2.2 nathanw } 542 1.10.2.2 nathanw if (bus_dmamap_load(sc->as_dmat, mem->am_dmamap, 543 1.10.2.2 nathanw mem->am_virtual, mem->am_size, NULL, BUS_DMA_WAITOK) != 0) { 544 1.10.2.2 nathanw bus_dmamem_unmap(sc->as_dmat, mem->am_virtual, 545 1.10.2.2 nathanw mem->am_size); 546 1.10.2.2 nathanw bus_dmamem_free(sc->as_dmat, segs, mem->am_nseg); 547 1.10.2.2 nathanw free(segs, M_AGP); 548 1.10.2.2 nathanw continue; 549 1.10.2.2 nathanw } 550 1.10.2.2 nathanw mem->am_dmaseg = segs; 551 1.10.2.2 nathanw break; 552 1.10.2.2 nathanw } 553 1.10.2.2 nathanw 554 1.10.2.2 nathanw if (contigpages == 0) { 555 1.10.2.2 nathanw lockmgr(&sc->as_lock, LK_RELEASE, 0); 556 1.10.2.2 nathanw return ENOMEM; 557 1.10.2.2 nathanw } 558 1.10.2.2 nathanw 559 1.10.2.2 nathanw 560 1.10.2.2 nathanw /* 561 1.10.2.2 nathanw * Bind the individual pages and flush the chipset's 562 1.10.2.2 nathanw * TLB. 563 1.10.2.2 nathanw */ 564 1.10.2.2 nathanw done = 0; 565 1.10.2.2 nathanw for (i = 0; i < mem->am_dmamap->dm_nsegs; i++) { 566 1.10.2.2 nathanw seg = &mem->am_dmamap->dm_segs[i]; 567 1.10.2.2 nathanw /* 568 1.10.2.2 nathanw * Install entries in the GATT, making sure that if 569 1.10.2.2 nathanw * AGP_PAGE_SIZE < PAGE_SIZE and mem->am_size is not 570 1.10.2.2 nathanw * aligned to PAGE_SIZE, we don't modify too many GATT 571 1.10.2.2 nathanw * entries. 572 1.10.2.2 nathanw */ 573 1.10.2.2 nathanw for (j = 0; j < seg->ds_len && (done + j) < mem->am_size; 574 1.10.2.2 nathanw j += AGP_PAGE_SIZE) { 575 1.10.2.2 nathanw pa = seg->ds_addr + j; 576 1.10.2.2 nathanw AGP_DPF("binding offset %#lx to pa %#lx\n", 577 1.10.2.2 nathanw (unsigned long)(offset + done + j), 578 1.10.2.2 nathanw (unsigned long)pa); 579 1.10.2.2 nathanw error = AGP_BIND_PAGE(sc, offset + done + j, pa); 580 1.10.2.2 nathanw if (error) { 581 1.10.2.2 nathanw /* 582 1.10.2.2 nathanw * Bail out. Reverse all the mappings 583 1.10.2.2 nathanw * and unwire the pages. 584 1.10.2.2 nathanw */ 585 1.10.2.2 nathanw for (k = 0; k < done + j; k += AGP_PAGE_SIZE) 586 1.10.2.2 nathanw AGP_UNBIND_PAGE(sc, offset + k); 587 1.10.2.2 nathanw 588 1.10.2.2 nathanw bus_dmamap_unload(sc->as_dmat, mem->am_dmamap); 589 1.10.2.2 nathanw bus_dmamem_unmap(sc->as_dmat, mem->am_virtual, 590 1.10.2.2 nathanw mem->am_size); 591 1.10.2.2 nathanw bus_dmamem_free(sc->as_dmat, mem->am_dmaseg, 592 1.10.2.2 nathanw mem->am_nseg); 593 1.10.2.2 nathanw free(mem->am_dmaseg, M_AGP); 594 1.10.2.2 nathanw lockmgr(&sc->as_lock, LK_RELEASE, 0); 595 1.10.2.2 nathanw return error; 596 1.10.2.2 nathanw } 597 1.10.2.2 nathanw } 598 1.10.2.2 nathanw done += seg->ds_len; 599 1.10.2.2 nathanw } 600 1.10.2.2 nathanw 601 1.10.2.2 nathanw /* 602 1.10.2.2 nathanw * Flush the cpu cache since we are providing a new mapping 603 1.10.2.2 nathanw * for these pages. 604 1.10.2.2 nathanw */ 605 1.10.2.2 nathanw agp_flush_cache(); 606 1.10.2.2 nathanw 607 1.10.2.2 nathanw /* 608 1.10.2.2 nathanw * Make sure the chipset gets the new mappings. 609 1.10.2.2 nathanw */ 610 1.10.2.2 nathanw AGP_FLUSH_TLB(sc); 611 1.10.2.2 nathanw 612 1.10.2.2 nathanw mem->am_offset = offset; 613 1.10.2.2 nathanw mem->am_is_bound = 1; 614 1.10.2.2 nathanw 615 1.10.2.2 nathanw lockmgr(&sc->as_lock, LK_RELEASE, 0); 616 1.10.2.2 nathanw 617 1.10.2.2 nathanw return 0; 618 1.10.2.2 nathanw } 619 1.10.2.2 nathanw 620 1.10.2.2 nathanw int 621 1.10.2.2 nathanw agp_generic_unbind_memory(struct agp_softc *sc, struct agp_memory *mem) 622 1.10.2.2 nathanw { 623 1.10.2.2 nathanw int i; 624 1.10.2.2 nathanw 625 1.10.2.2 nathanw lockmgr(&sc->as_lock, LK_EXCLUSIVE, 0); 626 1.10.2.2 nathanw 627 1.10.2.2 nathanw if (!mem->am_is_bound) { 628 1.10.2.2 nathanw printf("%s: memory is not bound\n", sc->as_dev.dv_xname); 629 1.10.2.2 nathanw lockmgr(&sc->as_lock, LK_RELEASE, 0); 630 1.10.2.2 nathanw return EINVAL; 631 1.10.2.2 nathanw } 632 1.10.2.2 nathanw 633 1.10.2.2 nathanw 634 1.10.2.2 nathanw /* 635 1.10.2.2 nathanw * Unbind the individual pages and flush the chipset's 636 1.10.2.2 nathanw * TLB. Unwire the pages so they can be swapped. 637 1.10.2.2 nathanw */ 638 1.10.2.2 nathanw for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 639 1.10.2.2 nathanw AGP_UNBIND_PAGE(sc, mem->am_offset + i); 640 1.10.2.2 nathanw 641 1.10.2.2 nathanw agp_flush_cache(); 642 1.10.2.2 nathanw AGP_FLUSH_TLB(sc); 643 1.10.2.2 nathanw 644 1.10.2.2 nathanw bus_dmamap_unload(sc->as_dmat, mem->am_dmamap); 645 1.10.2.2 nathanw bus_dmamem_unmap(sc->as_dmat, mem->am_virtual, mem->am_size); 646 1.10.2.2 nathanw bus_dmamem_free(sc->as_dmat, mem->am_dmaseg, mem->am_nseg); 647 1.10.2.2 nathanw 648 1.10.2.2 nathanw free(mem->am_dmaseg, M_AGP); 649 1.10.2.2 nathanw 650 1.10.2.2 nathanw mem->am_offset = 0; 651 1.10.2.2 nathanw mem->am_is_bound = 0; 652 1.10.2.2 nathanw 653 1.10.2.2 nathanw lockmgr(&sc->as_lock, LK_RELEASE, 0); 654 1.10.2.2 nathanw 655 1.10.2.2 nathanw return 0; 656 1.10.2.2 nathanw } 657 1.10.2.2 nathanw 658 1.10.2.2 nathanw /* Helper functions for implementing user/kernel api */ 659 1.10.2.2 nathanw 660 1.10.2.2 nathanw static int 661 1.10.2.2 nathanw agp_acquire_helper(struct agp_softc *sc, enum agp_acquire_state state) 662 1.10.2.2 nathanw { 663 1.10.2.2 nathanw if (sc->as_state != AGP_ACQUIRE_FREE) 664 1.10.2.2 nathanw return EBUSY; 665 1.10.2.2 nathanw sc->as_state = state; 666 1.10.2.2 nathanw 667 1.10.2.2 nathanw return 0; 668 1.10.2.2 nathanw } 669 1.10.2.2 nathanw 670 1.10.2.2 nathanw static int 671 1.10.2.2 nathanw agp_release_helper(struct agp_softc *sc, enum agp_acquire_state state) 672 1.10.2.2 nathanw { 673 1.10.2.2 nathanw struct agp_memory *mem; 674 1.10.2.2 nathanw 675 1.10.2.2 nathanw if (sc->as_state == AGP_ACQUIRE_FREE) 676 1.10.2.2 nathanw return 0; 677 1.10.2.2 nathanw 678 1.10.2.2 nathanw if (sc->as_state != state) 679 1.10.2.2 nathanw return EBUSY; 680 1.10.2.2 nathanw 681 1.10.2.2 nathanw /* 682 1.10.2.7 nathanw * Clear out outstanding aperture mappings. 683 1.10.2.7 nathanw * (should not be necessary, done by caller) 684 1.10.2.2 nathanw */ 685 1.10.2.2 nathanw TAILQ_FOREACH(mem, &sc->as_memory, am_link) { 686 1.10.2.2 nathanw if (mem->am_is_bound) { 687 1.10.2.2 nathanw printf("agp_release_helper: mem %d is bound\n", 688 1.10.2.2 nathanw mem->am_id); 689 1.10.2.2 nathanw AGP_UNBIND_MEMORY(sc, mem); 690 1.10.2.2 nathanw } 691 1.10.2.2 nathanw } 692 1.10.2.2 nathanw 693 1.10.2.2 nathanw sc->as_state = AGP_ACQUIRE_FREE; 694 1.10.2.2 nathanw return 0; 695 1.10.2.2 nathanw } 696 1.10.2.2 nathanw 697 1.10.2.2 nathanw static struct agp_memory * 698 1.10.2.2 nathanw agp_find_memory(struct agp_softc *sc, int id) 699 1.10.2.2 nathanw { 700 1.10.2.2 nathanw struct agp_memory *mem; 701 1.10.2.2 nathanw 702 1.10.2.2 nathanw AGP_DPF("searching for memory block %d\n", id); 703 1.10.2.2 nathanw TAILQ_FOREACH(mem, &sc->as_memory, am_link) { 704 1.10.2.2 nathanw AGP_DPF("considering memory block %d\n", mem->am_id); 705 1.10.2.2 nathanw if (mem->am_id == id) 706 1.10.2.2 nathanw return mem; 707 1.10.2.2 nathanw } 708 1.10.2.2 nathanw return 0; 709 1.10.2.2 nathanw } 710 1.10.2.2 nathanw 711 1.10.2.2 nathanw /* Implementation of the userland ioctl api */ 712 1.10.2.2 nathanw 713 1.10.2.2 nathanw static int 714 1.10.2.2 nathanw agp_info_user(struct agp_softc *sc, agp_info *info) 715 1.10.2.2 nathanw { 716 1.10.2.2 nathanw memset(info, 0, sizeof *info); 717 1.10.2.2 nathanw info->bridge_id = sc->as_id; 718 1.10.2.2 nathanw if (sc->as_capoff != 0) 719 1.10.2.2 nathanw info->agp_mode = pci_conf_read(sc->as_pc, sc->as_tag, 720 1.10.2.2 nathanw sc->as_capoff + AGP_STATUS); 721 1.10.2.2 nathanw else 722 1.10.2.2 nathanw info->agp_mode = 0; /* i810 doesn't have real AGP */ 723 1.10.2.2 nathanw info->aper_base = sc->as_apaddr; 724 1.10.2.2 nathanw info->aper_size = AGP_GET_APERTURE(sc) >> 20; 725 1.10.2.2 nathanw info->pg_total = info->pg_system = sc->as_maxmem >> AGP_PAGE_SHIFT; 726 1.10.2.2 nathanw info->pg_used = sc->as_allocated >> AGP_PAGE_SHIFT; 727 1.10.2.2 nathanw 728 1.10.2.2 nathanw return 0; 729 1.10.2.2 nathanw } 730 1.10.2.2 nathanw 731 1.10.2.2 nathanw static int 732 1.10.2.2 nathanw agp_setup_user(struct agp_softc *sc, agp_setup *setup) 733 1.10.2.2 nathanw { 734 1.10.2.2 nathanw return AGP_ENABLE(sc, setup->agp_mode); 735 1.10.2.2 nathanw } 736 1.10.2.2 nathanw 737 1.10.2.2 nathanw static int 738 1.10.2.2 nathanw agp_allocate_user(struct agp_softc *sc, agp_allocate *alloc) 739 1.10.2.2 nathanw { 740 1.10.2.2 nathanw struct agp_memory *mem; 741 1.10.2.2 nathanw 742 1.10.2.2 nathanw mem = AGP_ALLOC_MEMORY(sc, 743 1.10.2.2 nathanw alloc->type, 744 1.10.2.2 nathanw alloc->pg_count << AGP_PAGE_SHIFT); 745 1.10.2.2 nathanw if (mem) { 746 1.10.2.2 nathanw alloc->key = mem->am_id; 747 1.10.2.2 nathanw alloc->physical = mem->am_physical; 748 1.10.2.2 nathanw return 0; 749 1.10.2.2 nathanw } else { 750 1.10.2.2 nathanw return ENOMEM; 751 1.10.2.2 nathanw } 752 1.10.2.2 nathanw } 753 1.10.2.2 nathanw 754 1.10.2.2 nathanw static int 755 1.10.2.2 nathanw agp_deallocate_user(struct agp_softc *sc, int id) 756 1.10.2.2 nathanw { 757 1.10.2.2 nathanw struct agp_memory *mem = agp_find_memory(sc, id); 758 1.10.2.2 nathanw 759 1.10.2.2 nathanw if (mem) { 760 1.10.2.2 nathanw AGP_FREE_MEMORY(sc, mem); 761 1.10.2.2 nathanw return 0; 762 1.10.2.2 nathanw } else { 763 1.10.2.2 nathanw return ENOENT; 764 1.10.2.2 nathanw } 765 1.10.2.2 nathanw } 766 1.10.2.2 nathanw 767 1.10.2.2 nathanw static int 768 1.10.2.2 nathanw agp_bind_user(struct agp_softc *sc, agp_bind *bind) 769 1.10.2.2 nathanw { 770 1.10.2.2 nathanw struct agp_memory *mem = agp_find_memory(sc, bind->key); 771 1.10.2.2 nathanw 772 1.10.2.2 nathanw if (!mem) 773 1.10.2.2 nathanw return ENOENT; 774 1.10.2.2 nathanw 775 1.10.2.2 nathanw return AGP_BIND_MEMORY(sc, mem, bind->pg_start << AGP_PAGE_SHIFT); 776 1.10.2.2 nathanw } 777 1.10.2.2 nathanw 778 1.10.2.2 nathanw static int 779 1.10.2.2 nathanw agp_unbind_user(struct agp_softc *sc, agp_unbind *unbind) 780 1.10.2.2 nathanw { 781 1.10.2.2 nathanw struct agp_memory *mem = agp_find_memory(sc, unbind->key); 782 1.10.2.2 nathanw 783 1.10.2.2 nathanw if (!mem) 784 1.10.2.2 nathanw return ENOENT; 785 1.10.2.2 nathanw 786 1.10.2.2 nathanw return AGP_UNBIND_MEMORY(sc, mem); 787 1.10.2.2 nathanw } 788 1.10.2.2 nathanw 789 1.10.2.2 nathanw int 790 1.10.2.2 nathanw agpopen(dev_t dev, int oflags, int devtype, struct proc *p) 791 1.10.2.2 nathanw { 792 1.10.2.2 nathanw struct agp_softc *sc = device_lookup(&agp_cd, AGPUNIT(dev)); 793 1.10.2.2 nathanw 794 1.10.2.2 nathanw if (sc == NULL) 795 1.10.2.2 nathanw return ENXIO; 796 1.10.2.2 nathanw 797 1.10.2.2 nathanw if (sc->as_chipc == NULL) 798 1.10.2.2 nathanw return ENXIO; 799 1.10.2.2 nathanw 800 1.10.2.2 nathanw if (!sc->as_isopen) 801 1.10.2.2 nathanw sc->as_isopen = 1; 802 1.10.2.2 nathanw else 803 1.10.2.2 nathanw return EBUSY; 804 1.10.2.2 nathanw 805 1.10.2.2 nathanw return 0; 806 1.10.2.2 nathanw } 807 1.10.2.2 nathanw 808 1.10.2.2 nathanw int 809 1.10.2.2 nathanw agpclose(dev_t dev, int fflag, int devtype, struct proc *p) 810 1.10.2.2 nathanw { 811 1.10.2.2 nathanw struct agp_softc *sc = device_lookup(&agp_cd, AGPUNIT(dev)); 812 1.10.2.7 nathanw struct agp_memory *mem; 813 1.10.2.2 nathanw 814 1.10.2.2 nathanw /* 815 1.10.2.2 nathanw * Clear the GATT and force release on last close 816 1.10.2.2 nathanw */ 817 1.10.2.7 nathanw if (sc->as_state == AGP_ACQUIRE_USER) { 818 1.10.2.7 nathanw while ((mem = TAILQ_FIRST(&sc->as_memory))) { 819 1.10.2.7 nathanw if (mem->am_is_bound) { 820 1.10.2.7 nathanw printf("agpclose: mem %d is bound\n", 821 1.10.2.7 nathanw mem->am_id); 822 1.10.2.7 nathanw AGP_UNBIND_MEMORY(sc, mem); 823 1.10.2.7 nathanw } 824 1.10.2.7 nathanw /* 825 1.10.2.7 nathanw * XXX it is not documented, but if the protocol allows 826 1.10.2.7 nathanw * allocate->acquire->bind, it would be possible that 827 1.10.2.7 nathanw * memory ranges are allocated by the kernel here, 828 1.10.2.7 nathanw * which we shouldn't free. We'd have to keep track of 829 1.10.2.7 nathanw * the memory range's owner. 830 1.10.2.7 nathanw * The kernel API is unsed yet, so we get away with 831 1.10.2.7 nathanw * freeing all. 832 1.10.2.7 nathanw */ 833 1.10.2.7 nathanw AGP_FREE_MEMORY(sc, mem); 834 1.10.2.7 nathanw } 835 1.10.2.2 nathanw agp_release_helper(sc, AGP_ACQUIRE_USER); 836 1.10.2.7 nathanw } 837 1.10.2.2 nathanw sc->as_isopen = 0; 838 1.10.2.2 nathanw 839 1.10.2.2 nathanw return 0; 840 1.10.2.2 nathanw } 841 1.10.2.2 nathanw 842 1.10.2.2 nathanw int 843 1.10.2.2 nathanw agpioctl(dev_t dev, u_long cmd, caddr_t data, int fflag, struct proc *p) 844 1.10.2.2 nathanw { 845 1.10.2.2 nathanw struct agp_softc *sc = device_lookup(&agp_cd, AGPUNIT(dev)); 846 1.10.2.2 nathanw 847 1.10.2.2 nathanw if (sc == NULL) 848 1.10.2.2 nathanw return ENODEV; 849 1.10.2.2 nathanw 850 1.10.2.2 nathanw if ((fflag & FWRITE) == 0 && cmd != AGPIOC_INFO) 851 1.10.2.2 nathanw return EPERM; 852 1.10.2.2 nathanw 853 1.10.2.2 nathanw switch (cmd) { 854 1.10.2.2 nathanw case AGPIOC_INFO: 855 1.10.2.2 nathanw return agp_info_user(sc, (agp_info *) data); 856 1.10.2.2 nathanw 857 1.10.2.2 nathanw case AGPIOC_ACQUIRE: 858 1.10.2.2 nathanw return agp_acquire_helper(sc, AGP_ACQUIRE_USER); 859 1.10.2.2 nathanw 860 1.10.2.2 nathanw case AGPIOC_RELEASE: 861 1.10.2.2 nathanw return agp_release_helper(sc, AGP_ACQUIRE_USER); 862 1.10.2.2 nathanw 863 1.10.2.2 nathanw case AGPIOC_SETUP: 864 1.10.2.2 nathanw return agp_setup_user(sc, (agp_setup *)data); 865 1.10.2.2 nathanw 866 1.10.2.2 nathanw case AGPIOC_ALLOCATE: 867 1.10.2.2 nathanw return agp_allocate_user(sc, (agp_allocate *)data); 868 1.10.2.2 nathanw 869 1.10.2.2 nathanw case AGPIOC_DEALLOCATE: 870 1.10.2.2 nathanw return agp_deallocate_user(sc, *(int *) data); 871 1.10.2.2 nathanw 872 1.10.2.2 nathanw case AGPIOC_BIND: 873 1.10.2.2 nathanw return agp_bind_user(sc, (agp_bind *)data); 874 1.10.2.2 nathanw 875 1.10.2.2 nathanw case AGPIOC_UNBIND: 876 1.10.2.2 nathanw return agp_unbind_user(sc, (agp_unbind *)data); 877 1.10.2.2 nathanw 878 1.10.2.2 nathanw } 879 1.10.2.2 nathanw 880 1.10.2.2 nathanw return EINVAL; 881 1.10.2.2 nathanw } 882 1.10.2.2 nathanw 883 1.10.2.2 nathanw paddr_t 884 1.10.2.2 nathanw agpmmap(dev_t dev, off_t offset, int prot) 885 1.10.2.2 nathanw { 886 1.10.2.2 nathanw struct agp_softc *sc = device_lookup(&agp_cd, AGPUNIT(dev)); 887 1.10.2.2 nathanw 888 1.10.2.2 nathanw if (offset > AGP_GET_APERTURE(sc)) 889 1.10.2.2 nathanw return -1; 890 1.10.2.2 nathanw 891 1.10.2.2 nathanw return (bus_space_mmap(sc->as_apt, sc->as_apaddr, offset, prot, 892 1.10.2.2 nathanw BUS_SPACE_MAP_LINEAR)); 893 1.10.2.2 nathanw } 894 1.10.2.2 nathanw 895 1.10.2.2 nathanw /* Implementation of the kernel api */ 896 1.10.2.2 nathanw 897 1.10.2.2 nathanw void * 898 1.10.2.2 nathanw agp_find_device(int unit) 899 1.10.2.2 nathanw { 900 1.10.2.2 nathanw return device_lookup(&agp_cd, unit); 901 1.10.2.2 nathanw } 902 1.10.2.2 nathanw 903 1.10.2.2 nathanw enum agp_acquire_state 904 1.10.2.2 nathanw agp_state(void *devcookie) 905 1.10.2.2 nathanw { 906 1.10.2.2 nathanw struct agp_softc *sc = devcookie; 907 1.10.2.2 nathanw return sc->as_state; 908 1.10.2.2 nathanw } 909 1.10.2.2 nathanw 910 1.10.2.2 nathanw void 911 1.10.2.2 nathanw agp_get_info(void *devcookie, struct agp_info *info) 912 1.10.2.2 nathanw { 913 1.10.2.2 nathanw struct agp_softc *sc = devcookie; 914 1.10.2.2 nathanw 915 1.10.2.2 nathanw info->ai_mode = pci_conf_read(sc->as_pc, sc->as_tag, 916 1.10.2.2 nathanw sc->as_capoff + AGP_STATUS); 917 1.10.2.2 nathanw info->ai_aperture_base = sc->as_apaddr; 918 1.10.2.2 nathanw info->ai_aperture_size = sc->as_apsize; /* XXXfvdl inconsistent */ 919 1.10.2.2 nathanw info->ai_memory_allowed = sc->as_maxmem; 920 1.10.2.2 nathanw info->ai_memory_used = sc->as_allocated; 921 1.10.2.2 nathanw } 922 1.10.2.2 nathanw 923 1.10.2.2 nathanw int 924 1.10.2.2 nathanw agp_acquire(void *dev) 925 1.10.2.2 nathanw { 926 1.10.2.2 nathanw return agp_acquire_helper(dev, AGP_ACQUIRE_KERNEL); 927 1.10.2.2 nathanw } 928 1.10.2.2 nathanw 929 1.10.2.2 nathanw int 930 1.10.2.2 nathanw agp_release(void *dev) 931 1.10.2.2 nathanw { 932 1.10.2.2 nathanw return agp_release_helper(dev, AGP_ACQUIRE_KERNEL); 933 1.10.2.2 nathanw } 934 1.10.2.2 nathanw 935 1.10.2.2 nathanw int 936 1.10.2.2 nathanw agp_enable(void *dev, u_int32_t mode) 937 1.10.2.2 nathanw { 938 1.10.2.2 nathanw struct agp_softc *sc = dev; 939 1.10.2.2 nathanw 940 1.10.2.2 nathanw return AGP_ENABLE(sc, mode); 941 1.10.2.2 nathanw } 942 1.10.2.2 nathanw 943 1.10.2.2 nathanw void *agp_alloc_memory(void *dev, int type, vsize_t bytes) 944 1.10.2.2 nathanw { 945 1.10.2.2 nathanw struct agp_softc *sc = dev; 946 1.10.2.2 nathanw 947 1.10.2.2 nathanw return (void *)AGP_ALLOC_MEMORY(sc, type, bytes); 948 1.10.2.2 nathanw } 949 1.10.2.2 nathanw 950 1.10.2.2 nathanw void agp_free_memory(void *dev, void *handle) 951 1.10.2.2 nathanw { 952 1.10.2.2 nathanw struct agp_softc *sc = dev; 953 1.10.2.2 nathanw struct agp_memory *mem = (struct agp_memory *) handle; 954 1.10.2.2 nathanw AGP_FREE_MEMORY(sc, mem); 955 1.10.2.2 nathanw } 956 1.10.2.2 nathanw 957 1.10.2.2 nathanw int agp_bind_memory(void *dev, void *handle, off_t offset) 958 1.10.2.2 nathanw { 959 1.10.2.2 nathanw struct agp_softc *sc = dev; 960 1.10.2.2 nathanw struct agp_memory *mem = (struct agp_memory *) handle; 961 1.10.2.2 nathanw 962 1.10.2.2 nathanw return AGP_BIND_MEMORY(sc, mem, offset); 963 1.10.2.2 nathanw } 964 1.10.2.2 nathanw 965 1.10.2.2 nathanw int agp_unbind_memory(void *dev, void *handle) 966 1.10.2.2 nathanw { 967 1.10.2.2 nathanw struct agp_softc *sc = dev; 968 1.10.2.2 nathanw struct agp_memory *mem = (struct agp_memory *) handle; 969 1.10.2.2 nathanw 970 1.10.2.2 nathanw return AGP_UNBIND_MEMORY(sc, mem); 971 1.10.2.2 nathanw } 972 1.10.2.2 nathanw 973 1.10.2.2 nathanw void agp_memory_info(void *dev, void *handle, struct agp_memory_info *mi) 974 1.10.2.2 nathanw { 975 1.10.2.2 nathanw struct agp_memory *mem = (struct agp_memory *) handle; 976 1.10.2.2 nathanw 977 1.10.2.2 nathanw mi->ami_size = mem->am_size; 978 1.10.2.2 nathanw mi->ami_physical = mem->am_physical; 979 1.10.2.2 nathanw mi->ami_offset = mem->am_offset; 980 1.10.2.2 nathanw mi->ami_is_bound = mem->am_is_bound; 981 1.10.2.2 nathanw } 982 1.10.2.2 nathanw 983 1.10.2.2 nathanw int 984 1.10.2.2 nathanw agp_alloc_dmamem(bus_dma_tag_t tag, size_t size, int flags, 985 1.10.2.2 nathanw bus_dmamap_t *mapp, caddr_t *vaddr, bus_addr_t *baddr, 986 1.10.2.2 nathanw bus_dma_segment_t *seg, int nseg, int *rseg) 987 1.10.2.2 nathanw 988 1.10.2.2 nathanw { 989 1.10.2.2 nathanw int error, level = 0; 990 1.10.2.2 nathanw 991 1.10.2.2 nathanw if ((error = bus_dmamem_alloc(tag, size, PAGE_SIZE, 0, 992 1.10.2.2 nathanw seg, nseg, rseg, BUS_DMA_NOWAIT)) != 0) 993 1.10.2.2 nathanw goto out; 994 1.10.2.2 nathanw level++; 995 1.10.2.2 nathanw 996 1.10.2.2 nathanw if ((error = bus_dmamem_map(tag, seg, *rseg, size, vaddr, 997 1.10.2.2 nathanw BUS_DMA_NOWAIT | flags)) != 0) 998 1.10.2.2 nathanw goto out; 999 1.10.2.2 nathanw level++; 1000 1.10.2.2 nathanw 1001 1.10.2.2 nathanw if ((error = bus_dmamap_create(tag, size, *rseg, size, 0, 1002 1.10.2.2 nathanw BUS_DMA_NOWAIT, mapp)) != 0) 1003 1.10.2.2 nathanw goto out; 1004 1.10.2.2 nathanw level++; 1005 1.10.2.2 nathanw 1006 1.10.2.2 nathanw if ((error = bus_dmamap_load(tag, *mapp, *vaddr, size, NULL, 1007 1.10.2.2 nathanw BUS_DMA_NOWAIT)) != 0) 1008 1.10.2.2 nathanw goto out; 1009 1.10.2.2 nathanw 1010 1.10.2.2 nathanw *baddr = (*mapp)->dm_segs[0].ds_addr; 1011 1.10.2.2 nathanw 1012 1.10.2.2 nathanw return 0; 1013 1.10.2.2 nathanw out: 1014 1.10.2.2 nathanw switch (level) { 1015 1.10.2.2 nathanw case 3: 1016 1.10.2.2 nathanw bus_dmamap_destroy(tag, *mapp); 1017 1.10.2.2 nathanw /* FALLTHROUGH */ 1018 1.10.2.2 nathanw case 2: 1019 1.10.2.2 nathanw bus_dmamem_unmap(tag, *vaddr, size); 1020 1.10.2.2 nathanw /* FALLTHROUGH */ 1021 1.10.2.2 nathanw case 1: 1022 1.10.2.2 nathanw bus_dmamem_free(tag, seg, *rseg); 1023 1.10.2.2 nathanw break; 1024 1.10.2.2 nathanw default: 1025 1.10.2.2 nathanw break; 1026 1.10.2.2 nathanw } 1027 1.10.2.2 nathanw 1028 1.10.2.2 nathanw return error; 1029 1.10.2.2 nathanw } 1030 1.10.2.2 nathanw 1031 1.10.2.2 nathanw void 1032 1.10.2.2 nathanw agp_free_dmamem(bus_dma_tag_t tag, size_t size, bus_dmamap_t map, 1033 1.10.2.2 nathanw caddr_t vaddr, bus_dma_segment_t *seg, int nseg) 1034 1.10.2.2 nathanw { 1035 1.10.2.2 nathanw 1036 1.10.2.2 nathanw bus_dmamap_unload(tag, map); 1037 1.10.2.2 nathanw bus_dmamap_destroy(tag, map); 1038 1.10.2.2 nathanw bus_dmamem_unmap(tag, vaddr, size); 1039 1.10.2.2 nathanw bus_dmamem_free(tag, seg, nseg); 1040 1.10.2.2 nathanw } 1041
Indexes created Wed Oct 15 07:09:58 GMT 2025