?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
libstand.3: add HAMMER and MS-DOS filesystems and improve mark-up
[dragonfly.git] / sys / dev / agp / agp_i810.c
blob617cf77de401545e74e420593191ee4a7cccfdb3
1 /*
2 * Copyright (c) 2000 Doug Rabson
3 * Copyright (c) 2000 Ruslan Ermilov
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: src/sys/dev/agp/agp_i810.c,v 1.43 2007/11/12 21:51:36 jhb Exp $
28 * $DragonFly: src/sys/dev/agp/agp_i810.c,v 1.19 2008/10/03 08:56:58 hasso Exp $
29 */
30
31 /*
32 * Fixes for 830/845G support: David Dawes <dawes@xfree86.org>
33 * 852GM/855GM/865G support added by David Dawes <dawes@xfree86.org>
34 */
35
36 #include "opt_bus.h"
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/malloc.h>
41 #include <sys/kernel.h>
42 #include <sys/bus.h>
43 #include <sys/lock.h>
44 #include <sys/rman.h>
45
46 #include <bus/pci/pcivar.h>
47 #include <bus/pci/pcireg.h>
48 #include "agppriv.h"
49 #include "agpreg.h"
50
51 #include <vm/vm.h>
52 #include <vm/vm_object.h>
53 #include <vm/vm_page.h>
54 #include <vm/vm_pageout.h>
55 #include <vm/pmap.h>
56
57 #include <machine/md_var.h>
58
59 #define bus_read_1(r, o) \
60 bus_space_read_1((r)->r_bustag, (r)->r_bushandle, (o))
61 #define bus_read_4(r, o) \
62 bus_space_read_4((r)->r_bustag, (r)->r_bushandle, (o))
63 #define bus_write_4(r, o, v) \
64 bus_space_write_4((r)->r_bustag, (r)->r_bushandle, (o), (v))
65
66 MALLOC_DECLARE(M_AGP);
67
68 enum {
69 CHIP_I810, /* i810/i815 */
70 CHIP_I830, /* 830M/845G */
71 CHIP_I855, /* 852GM/855GM/865G */
72 CHIP_I915, /* 915G/915GM */
73 CHIP_I965, /* G965 */
74 CHIP_G33, /* G33/Q33/Q35 */
75 CHIP_G4X, /* G45/Q45 */
76 };
77
78 /* The i810 through i855 have the registers at BAR 1, and the GATT gets
79 * allocated by us. The i915 has registers in BAR 0 and the GATT is at the
80 * start of the stolen memory, and should only be accessed by the OS through
81 * BAR 3. The G965 has registers and GATT in the same BAR (0) -- first 512KB
82 * is registers, second 512KB is GATT.
83 */
84 static struct resource_spec agp_i810_res_spec[] = {
85 { SYS_RES_MEMORY, AGP_I810_MMADR, RF_ACTIVE | RF_SHAREABLE },
86 { -1, 0 }
87 };
88
89 static struct resource_spec agp_i915_res_spec[] = {
90 { SYS_RES_MEMORY, AGP_I915_MMADR, RF_ACTIVE | RF_SHAREABLE },
91 { SYS_RES_MEMORY, AGP_I915_GTTADR, RF_ACTIVE | RF_SHAREABLE },
92 { -1, 0 }
93 };
94
95 static struct resource_spec agp_i965_res_spec[] = {
96 { SYS_RES_MEMORY, AGP_I965_GTTMMADR, RF_ACTIVE | RF_SHAREABLE },
97 { -1, 0 }
98 };
99
100 struct agp_i810_softc {
101 struct agp_softc agp;
102 u_int32_t initial_aperture; /* aperture size at startup */
103 struct agp_gatt *gatt;
104 int chiptype; /* i810-like or i830 */
105 u_int32_t dcache_size; /* i810 only */
106 u_int32_t stolen; /* number of i830/845 gtt entries for stolen memory */
107 device_t bdev; /* bridge device */
108
109 void *argb_cursor; /* contigmalloc area for ARGB cursor */
110
111 struct resource_spec * sc_res_spec;
112 struct resource *sc_res[2];
113 };
114
115 /* For adding new devices, devid is the id of the graphics controller
116 * (pci:0:2:0, for example). The placeholder (usually at pci:0:2:1) for the
117 * second head should never be added. The bridge_offset is the offset to
118 * subtract from devid to get the id of the hostb that the device is on.
119 */
120 static const struct agp_i810_match {
121 int devid;
122 int chiptype;
123 int bridge_offset;
124 char *name;
125 } agp_i810_matches[] = {
126 {0x71218086, CHIP_I810, 0x00010000,
127 "Intel 82810 (i810 GMCH) SVGA controller"},
128 {0x71238086, CHIP_I810, 0x00010000,
129 "Intel 82810-DC100 (i810-DC100 GMCH) SVGA controller"},
130 {0x71258086, CHIP_I810, 0x00010000,
131 "Intel 82810E (i810E GMCH) SVGA controller"},
132 {0x11328086, CHIP_I810, 0x00020000,
133 "Intel 82815 (i815 GMCH) SVGA controller"},
134 {0x35778086, CHIP_I830, 0x00020000,
135 "Intel 82830M (830M GMCH) SVGA controller"},
136 {0x25628086, CHIP_I830, 0x00020000,
137 "Intel 82845M (845M GMCH) SVGA controller"},
138 {0x35828086, CHIP_I855, 0x00020000,
139 "Intel 82852/855GM SVGA controller"},
140 {0x25728086, CHIP_I855, 0x00020000,
141 "Intel 82865G (865G GMCH) SVGA controller"},
142 {0x25828086, CHIP_I915, 0x00020000,
143 "Intel 82915G (915G GMCH) SVGA controller"},
144 {0x258A8086, CHIP_I915, 0x00020000,
145 "Intel E7221 SVGA controller"},
146 {0x25928086, CHIP_I915, 0x00020000,
147 "Intel 82915GM (915GM GMCH) SVGA controller"},
148 {0x27728086, CHIP_I915, 0x00020000,
149 "Intel 82945G (945G GMCH) SVGA controller"},
150 {0x27A28086, CHIP_I915, 0x00020000,
151 "Intel 82945GM (945GM GMCH) SVGA controller"},
152 {0x27AE8086, CHIP_I915, 0x00020000,
153 "Intel 945GME SVGA controller"},
154 {0x29728086, CHIP_I965, 0x00020000,
155 "Intel 946GZ SVGA controller"},
156 {0x29828086, CHIP_I965, 0x00020000,
157 "Intel G965 SVGA controller"},
158 {0x29928086, CHIP_I965, 0x00020000,
159 "Intel Q965 SVGA controller"},
160 {0x29A28086, CHIP_I965, 0x00020000,
161 "Intel G965 SVGA controller"},
162 {0x29B28086, CHIP_G33, 0x00020000,
163 "Intel Q35 SVGA controller"},
164 {0x29C28086, CHIP_G33, 0x00020000,
165 "Intel G33 SVGA controller"},
166 {0x29D28086, CHIP_G33, 0x00020000,
167 "Intel Q33 SVGA controller"},
168 {0x2A028086, CHIP_I965, 0x00020000,
169 "Intel GM965 SVGA controller"},
170 {0x2A128086, CHIP_I965, 0x00020000,
171 "Intel GME965 SVGA controller"},
172 {0x2A428086, CHIP_G4X, 0x00020000,
173 "Intel GM45 SVGA controller"},
174 {0x2E028086, CHIP_G4X, 0x00020000,
175 "Intel 4 Series SVGA controller"},
176 {0x2E328086, CHIP_G4X, 0x00020000,
177 "Intel 4 Series SVGA controller"},
178 {0x2E128086, CHIP_G4X, 0x00020000,
179 "Intel Q45 SVGA controller"},
180 {0x2E228086, CHIP_G4X, 0x00020000,
181 "Intel G45 SVGA controller"},
182 {0, 0, 0, NULL}
183 };
184
185 static const struct agp_i810_match*
186 agp_i810_match(device_t dev)
187 {
188 int i, devid;
189
190 if (pci_get_class(dev) != PCIC_DISPLAY
191 || pci_get_subclass(dev) != PCIS_DISPLAY_VGA)
192 return NULL;
193
194 devid = pci_get_devid(dev);
195 for (i = 0; agp_i810_matches[i].devid != 0; i++) {
196 if (agp_i810_matches[i].devid == devid)
197 break;
198 }
199 if (agp_i810_matches[i].devid == 0)
200 return NULL;
201 else
202 return &agp_i810_matches[i];
203 }
204
205 /*
206 * Find bridge device.
207 */
208 static device_t
209 agp_i810_find_bridge(device_t dev)
210 {
211 device_t *children, child;
212 int nchildren, i;
213 u_int32_t devid;
214 const struct agp_i810_match *match;
215
216 match = agp_i810_match(dev);
217 devid = match->devid - match->bridge_offset;
218
219 if (device_get_children(device_get_parent(dev), &children, &nchildren))
220 return 0;
221
222 for (i = 0; i < nchildren; i++) {
223 child = children[i];
224
225 if (pci_get_devid(child) == devid) {
226 kfree(children, M_TEMP);
227 return child;
228 }
229 }
230 kfree(children, M_TEMP);
231 return 0;
232 }
233
234 static void
235 agp_i810_identify(driver_t *driver, device_t parent)
236 {
237
238 if (device_find_child(parent, "agp", -1) == NULL &&
239 agp_i810_match(parent))
240 device_add_child(parent, "agp", -1);
241 }
242
243 static int
244 agp_i810_probe(device_t dev)
245 {
246 device_t bdev;
247 const struct agp_i810_match *match;
248 u_int8_t smram;
249 int gcc1, deven;
250
251 if (resource_disabled("agp", device_get_unit(dev)))
252 return (ENXIO);
253 match = agp_i810_match(dev);
254 if (match == NULL)
255 return ENXIO;
256
257 bdev = agp_i810_find_bridge(dev);
258 if (!bdev) {
259 if (bootverbose)
260 kprintf("I810: can't find bridge device\n");
261 return ENXIO;
262 }
263
264 /*
265 * checking whether internal graphics device has been activated.
266 */
267 switch (match->chiptype) {
268 case CHIP_I810:
269 smram = pci_read_config(bdev, AGP_I810_SMRAM, 1);
270 if ((smram & AGP_I810_SMRAM_GMS) ==
271 AGP_I810_SMRAM_GMS_DISABLED) {
272 if (bootverbose)
273 kprintf("I810: disabled, not probing\n");
274 return ENXIO;
275 }
276 break;
277 case CHIP_I830:
278 case CHIP_I855:
279 gcc1 = pci_read_config(bdev, AGP_I830_GCC1, 1);
280 if ((gcc1 & AGP_I830_GCC1_DEV2) ==
281 AGP_I830_GCC1_DEV2_DISABLED) {
282 if (bootverbose)
283 kprintf("I830: disabled, not probing\n");
284 return ENXIO;
285 }
286 break;
287 case CHIP_I915:
288 case CHIP_I965:
289 case CHIP_G33:
290 case CHIP_G4X:
291 deven = pci_read_config(bdev, AGP_I915_DEVEN, 4);
292 if ((deven & AGP_I915_DEVEN_D2F0) ==
293 AGP_I915_DEVEN_D2F0_DISABLED) {
294 if (bootverbose)
295 kprintf("I915: disabled, not probing\n");
296 return ENXIO;
297 }
298 break;
299 }
300
301 device_verbose(dev);
302 if (match->devid == 0x35828086) {
303 switch (pci_read_config(dev, AGP_I85X_CAPID, 1)) {
304 case AGP_I855_GME:
305 device_set_desc(dev,
306 "Intel 82855GME (855GME GMCH) SVGA controller");
307 break;
308 case AGP_I855_GM:
309 device_set_desc(dev,
310 "Intel 82855GM (855GM GMCH) SVGA controller");
311 break;
312 case AGP_I852_GME:
313 device_set_desc(dev,
314 "Intel 82852GME (852GME GMCH) SVGA controller");
315 break;
316 case AGP_I852_GM:
317 device_set_desc(dev,
318 "Intel 82852GM (852GM GMCH) SVGA controller");
319 break;
320 default:
321 device_set_desc(dev,
322 "Intel 8285xM (85xGM GMCH) SVGA controller");
323 break;
324 }
325 } else {
326 device_set_desc(dev, match->name);
327 }
328
329 return BUS_PROBE_DEFAULT;
330 }
331
332 static void
333 agp_i810_dump_regs(device_t dev)
334 {
335 struct agp_i810_softc *sc = device_get_softc(dev);
336
337 device_printf(dev, "AGP_I810_PGTBL_CTL: %08x\n",
338 bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL));
339
340 switch (sc->chiptype) {
341 case CHIP_I810:
342 device_printf(dev, "AGP_I810_MISCC: 0x%04x\n",
343 pci_read_config(sc->bdev, AGP_I810_MISCC, 2));
344 break;
345 case CHIP_I830:
346 device_printf(dev, "AGP_I830_GCC1: 0x%02x\n",
347 pci_read_config(sc->bdev, AGP_I830_GCC1, 1));
348 break;
349 case CHIP_I855:
350 device_printf(dev, "AGP_I855_GCC1: 0x%02x\n",
351 pci_read_config(sc->bdev, AGP_I855_GCC1, 1));
352 break;
353 case CHIP_I915:
354 case CHIP_I965:
355 case CHIP_G33:
356 case CHIP_G4X:
357 device_printf(dev, "AGP_I855_GCC1: 0x%02x\n",
358 pci_read_config(sc->bdev, AGP_I855_GCC1, 1));
359 device_printf(dev, "AGP_I915_MSAC: 0x%02x\n",
360 pci_read_config(sc->bdev, AGP_I915_MSAC, 1));
361 break;
362 }
363 device_printf(dev, "Aperture resource size: %d bytes\n",
364 AGP_GET_APERTURE(dev));
365 }
366
367 static int
368 agp_i810_attach(device_t dev)
369 {
370 struct agp_i810_softc *sc = device_get_softc(dev);
371 struct agp_gatt *gatt;
372 const struct agp_i810_match *match;
373 int error;
374
375 sc->bdev = agp_i810_find_bridge(dev);
376 if (!sc->bdev)
377 return ENOENT;
378
379 match = agp_i810_match(dev);
380 sc->chiptype = match->chiptype;
381
382 switch (sc->chiptype) {
383 case CHIP_I810:
384 case CHIP_I830:
385 case CHIP_I855:
386 sc->sc_res_spec = agp_i810_res_spec;
387 agp_set_aperture_resource(dev, AGP_APBASE);
388 break;
389 case CHIP_I915:
390 case CHIP_G33:
391 sc->sc_res_spec = agp_i915_res_spec;
392 agp_set_aperture_resource(dev, AGP_I915_GMADR);
393 break;
394 case CHIP_I965:
395 case CHIP_G4X:
396 sc->sc_res_spec = agp_i965_res_spec;
397 agp_set_aperture_resource(dev, AGP_I915_GMADR);
398 break;
399 }
400
401 error = agp_generic_attach(dev);
402 if (error)
403 return error;
404
405 if (sc->chiptype != CHIP_I965 && sc->chiptype != CHIP_G33 &&
406 sc->chiptype != CHIP_G4X && ptoa((vm_paddr_t)Maxmem) > 0xfffffffful)
407 {
408 device_printf(dev, "agp_i810.c does not support physical "
409 "memory above 4GB.\n");
410 return ENOENT;
411 }
412
413 if (bus_alloc_resources(dev, sc->sc_res_spec, sc->sc_res)) {
414 agp_generic_detach(dev);
415 return ENODEV;
416 }
417
418 sc->initial_aperture = AGP_GET_APERTURE(dev);
419 if (sc->initial_aperture == 0) {
420 device_printf(dev, "bad initial aperture size, disabling\n");
421 return ENXIO;
422 }
423
424 gatt = kmalloc( sizeof(struct agp_gatt), M_AGP, M_INTWAIT);
425 sc->gatt = gatt;
426
427 gatt->ag_entries = AGP_GET_APERTURE(dev) >> AGP_PAGE_SHIFT;
428
429 if ( sc->chiptype == CHIP_I810 ) {
430 /* Some i810s have on-chip memory called dcache */
431 if (bus_read_1(sc->sc_res[0], AGP_I810_DRT) &
432 AGP_I810_DRT_POPULATED)
433 sc->dcache_size = 4 * 1024 * 1024;
434 else
435 sc->dcache_size = 0;
436
437 /* According to the specs the gatt on the i810 must be 64k */
438 gatt->ag_virtual = contigmalloc( 64 * 1024, M_AGP, 0,
439 0, ~0, PAGE_SIZE, 0);
440 if (!gatt->ag_virtual) {
441 if (bootverbose)
442 device_printf(dev, "contiguous allocation failed\n");
443 bus_release_resources(dev, sc->sc_res_spec,
444 sc->sc_res);
445 kfree(gatt, M_AGP);
446 agp_generic_detach(dev);
447 return ENOMEM;
448 }
449 bzero(gatt->ag_virtual, gatt->ag_entries * sizeof(u_int32_t));
450
451 gatt->ag_physical = vtophys((vm_offset_t) gatt->ag_virtual);
452 agp_flush_cache();
453 /* Install the GATT. */
454 bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL,
455 gatt->ag_physical | 1);
456 } else if ( sc->chiptype == CHIP_I830 ) {
457 /* The i830 automatically initializes the 128k gatt on boot. */
458 unsigned int gcc1, pgtblctl;
459
460 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 1);
461 switch (gcc1 & AGP_I830_GCC1_GMS) {
462 case AGP_I830_GCC1_GMS_STOLEN_512:
463 sc->stolen = (512 - 132) * 1024 / 4096;
464 break;
465 case AGP_I830_GCC1_GMS_STOLEN_1024:
466 sc->stolen = (1024 - 132) * 1024 / 4096;
467 break;
468 case AGP_I830_GCC1_GMS_STOLEN_8192:
469 sc->stolen = (8192 - 132) * 1024 / 4096;
470 break;
471 default:
472 sc->stolen = 0;
473 device_printf(dev, "unknown memory configuration, disabling\n");
474 bus_release_resources(dev, sc->sc_res_spec,
475 sc->sc_res);
476 kfree(gatt, M_AGP);
477 agp_generic_detach(dev);
478 return EINVAL;
479 }
480 if (sc->stolen > 0) {
481 device_printf(dev, "detected %dk stolen memory\n",
482 sc->stolen * 4);
483 }
484 device_printf(dev, "aperture size is %dM\n",
485 sc->initial_aperture / 1024 / 1024);
486
487 /* GATT address is already in there, make sure it's enabled */
488 pgtblctl = bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL);
489 pgtblctl |= 1;
490 bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL, pgtblctl);
491
492 gatt->ag_physical = pgtblctl & ~1;
493 } else if (sc->chiptype == CHIP_I855 || sc->chiptype == CHIP_I915 ||
494 sc->chiptype == CHIP_I965 || sc->chiptype == CHIP_G33 ||
495 sc->chiptype == CHIP_G4X) {
496 unsigned int gcc1, pgtblctl, stolen, gtt_size;
497
498 /* Stolen memory is set up at the beginning of the aperture by
499 * the BIOS, consisting of the GATT followed by 4kb for the
500 * BIOS display.
501 */
502 switch (sc->chiptype) {
503 case CHIP_I855:
504 gtt_size = 128;
505 break;
506 case CHIP_I915:
507 gtt_size = 256;
508 break;
509 case CHIP_I965:
510 switch (bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL) &
511 AGP_I810_PGTBL_SIZE_MASK) {
512 case AGP_I810_PGTBL_SIZE_128KB:
513 gtt_size = 128;
514 break;
515 case AGP_I810_PGTBL_SIZE_256KB:
516 gtt_size = 256;
517 break;
518 case AGP_I810_PGTBL_SIZE_512KB:
519 gtt_size = 512;
520 break;
521 case AGP_I965_PGTBL_SIZE_1MB:
522 gtt_size = 1024;
523 break;
524 case AGP_I965_PGTBL_SIZE_2MB:
525 gtt_size = 2048;
526 break;
527 case AGP_I965_PGTBL_SIZE_1_5MB:
528 gtt_size = 1024 + 512;
529 break;
530 default:
531 device_printf(dev, "Bad PGTBL size\n");
532 bus_release_resources(dev, sc->sc_res_spec,
533 sc->sc_res);
534 kfree(gatt, M_AGP);
535 agp_generic_detach(dev);
536 return EINVAL;
537 }
538 break;
539 case CHIP_G33:
540 gcc1 = pci_read_config(sc->bdev, AGP_I855_GCC1, 2);
541 switch (gcc1 & AGP_G33_MGGC_GGMS_MASK) {
542 case AGP_G33_MGGC_GGMS_SIZE_1M:
543 gtt_size = 1024;
544 break;
545 case AGP_G33_MGGC_GGMS_SIZE_2M:
546 gtt_size = 2048;
547 break;
548 default:
549 device_printf(dev, "Bad PGTBL size\n");
550 bus_release_resources(dev, sc->sc_res_spec,
551 sc->sc_res);
552 kfree(gatt, M_AGP);
553 agp_generic_detach(dev);
554 return EINVAL;
555 }
556 break;
557 case CHIP_G4X:
558 gtt_size = 0;
559 break;
560 default:
561 device_printf(dev, "Bad chiptype\n");
562 bus_release_resources(dev, sc->sc_res_spec,
563 sc->sc_res);
564 kfree(gatt, M_AGP);
565 agp_generic_detach(dev);
566 return EINVAL;
567 }
568
569 /* GCC1 is called MGGC on i915+ */
570 gcc1 = pci_read_config(sc->bdev, AGP_I855_GCC1, 1);
571 switch (gcc1 & AGP_I855_GCC1_GMS) {
572 case AGP_I855_GCC1_GMS_STOLEN_1M:
573 stolen = 1024;
574 break;
575 case AGP_I855_GCC1_GMS_STOLEN_4M:
576 stolen = 4 * 1024;
577 break;
578 case AGP_I855_GCC1_GMS_STOLEN_8M:
579 stolen = 8 * 1024;
580 break;
581 case AGP_I855_GCC1_GMS_STOLEN_16M:
582 stolen = 16 * 1024;
583 break;
584 case AGP_I855_GCC1_GMS_STOLEN_32M:
585 stolen = 32 * 1024;
586 break;
587 case AGP_I915_GCC1_GMS_STOLEN_48M:
588 if (sc->chiptype == CHIP_I915 ||
589 sc->chiptype == CHIP_I965 ||
590 sc->chiptype == CHIP_G33 ||
591 sc->chiptype == CHIP_G4X) {
592 stolen = 48 * 1024;
593 } else {
594 stolen = 0;
595 }
596 break;
597 case AGP_I915_GCC1_GMS_STOLEN_64M:
598 if (sc->chiptype == CHIP_I915 ||
599 sc->chiptype == CHIP_I965 ||
600 sc->chiptype == CHIP_G33 ||
601 sc->chiptype == CHIP_G4X) {
602 stolen = 64 * 1024;
603 } else {
604 stolen = 0;
605 }
606 break;
607 case AGP_G33_GCC1_GMS_STOLEN_128M:
608 if (sc->chiptype == CHIP_I965 ||
609 sc->chiptype == CHIP_G33 ||
610 sc->chiptype == CHIP_G4X) {
611 stolen = 128 * 1024;
612 } else {
613 stolen = 0;
614 }
615 break;
616 case AGP_G33_GCC1_GMS_STOLEN_256M:
617 if (sc->chiptype == CHIP_I965 ||
618 sc->chiptype == CHIP_G33 ||
619 sc->chiptype == CHIP_G4X) {
620 stolen = 256 * 1024;
621 } else {
622 stolen = 0;
623 }
624 break;
625 case AGP_G4X_GCC1_GMS_STOLEN_96M:
626 if (sc->chiptype == CHIP_I965 ||
627 sc->chiptype == CHIP_G4X) {
628 stolen = 96 * 1024;
629 } else {
630 stolen = 0;
631 }
632 break;
633 case AGP_G4X_GCC1_GMS_STOLEN_160M:
634 if (sc->chiptype == CHIP_I965 ||
635 sc->chiptype == CHIP_G4X) {
636 stolen = 160 * 1024;
637 } else {
638 stolen = 0;
639 }
640 break;
641 case AGP_G4X_GCC1_GMS_STOLEN_224M:
642 if (sc->chiptype == CHIP_I965 ||
643 sc->chiptype == CHIP_G4X) {
644 stolen = 224 * 1024;
645 } else {
646 stolen = 0;
647 }
648 break;
649 case AGP_G4X_GCC1_GMS_STOLEN_352M:
650 if (sc->chiptype == CHIP_I965 ||
651 sc->chiptype == CHIP_G4X) {
652 stolen = 352 * 1024;
653 } else {
654 stolen = 0;
655 }
656 break;
657 default:
658 device_printf(dev, "unknown memory configuration, "
659 "disabling\n");
660 bus_release_resources(dev, sc->sc_res_spec,
661 sc->sc_res);
662 kfree(gatt, M_AGP);
663 agp_generic_detach(dev);
664 return EINVAL;
665 }
666
667 gtt_size += 4;
668
669 sc->stolen = (stolen - gtt_size) * 1024 / 4096;
670 if (sc->stolen > 0)
671 device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4);
672 device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024);
673
674 /* GATT address is already in there, make sure it's enabled */
675 pgtblctl = bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL);
676 pgtblctl |= 1;
677 bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL, pgtblctl);
678
679 gatt->ag_physical = pgtblctl & ~1;
680 }
681
682 /* Add a device for the drm to attach to */
683 /* XXX This will go away once we have vgapci */
684 if (!device_add_child(dev, "drmsub", -1))
685 device_printf(dev, "could not add drm subdevice\n");
686
687 if (0)
688 agp_i810_dump_regs(dev);
689
690 return 0;
691 }
692
693 static int
694 agp_i810_detach(device_t dev)
695 {
696 struct agp_i810_softc *sc = device_get_softc(dev);
697 device_t child;
698
699 agp_free_cdev(dev);
700
701 /* Clear the GATT base. */
702 if ( sc->chiptype == CHIP_I810 ) {
703 bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL, 0);
704 } else {
705 unsigned int pgtblctl;
706 pgtblctl = bus_read_4(sc->sc_res[0], AGP_I810_PGTBL_CTL);
707 pgtblctl &= ~1;
708 bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL, pgtblctl);
709 }
710
711 /* Put the aperture back the way it started. */
712 AGP_SET_APERTURE(dev, sc->initial_aperture);
713
714 if ( sc->chiptype == CHIP_I810 ) {
715 contigfree(sc->gatt->ag_virtual, 64 * 1024, M_AGP);
716 }
717 kfree(sc->gatt, M_AGP);
718
719 bus_release_resources(dev, sc->sc_res_spec, sc->sc_res);
720 agp_free_res(dev);
721
722 /* XXX This will go away once we have vgapci */
723 child = device_find_child(dev, "drmsub", 0);
724 if (child != NULL)
725 device_delete_child(dev, child);
726
727 return 0;
728 }
729
730 static int
731 agp_i810_resume(device_t dev)
732 {
733 struct agp_i810_softc *sc;
734 sc = device_get_softc(dev);
735
736 AGP_SET_APERTURE(dev, sc->initial_aperture);
737
738 /* Install the GATT. */
739 bus_write_4(sc->sc_res[0], AGP_I810_PGTBL_CTL,
740 sc->gatt->ag_physical | 1);
741
742 return (bus_generic_resume(dev));
743 }
744
745 /**
746 * Sets the PCI resource size of the aperture on i830-class and below chipsets,
747 * while returning failure on later chipsets when an actual change is
748 * requested.
749 *
750 * This whole function is likely bogus, as the kernel would probably need to
751 * reconfigure the placement of the AGP aperture if a larger size is requested,
752 * which doesn't happen currently.
753 */
754 static int
755 agp_i810_set_aperture(device_t dev, u_int32_t aperture)
756 {
757 struct agp_i810_softc *sc = device_get_softc(dev);
758 u_int16_t miscc, gcc1;
759
760 switch (sc->chiptype) {
761 case CHIP_I810:
762 /*
763 * Double check for sanity.
764 */
765 if (aperture != 32 * 1024 * 1024 && aperture != 64 * 1024 * 1024) {
766 device_printf(dev, "bad aperture size %d\n", aperture);
767 return EINVAL;
768 }
769
770 miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2);
771 miscc &= ~AGP_I810_MISCC_WINSIZE;
772 if (aperture == 32 * 1024 * 1024)
773 miscc |= AGP_I810_MISCC_WINSIZE_32;
774 else
775 miscc |= AGP_I810_MISCC_WINSIZE_64;
776
777 pci_write_config(sc->bdev, AGP_I810_MISCC, miscc, 2);
778 break;
779 case CHIP_I830:
780 if (aperture != 64 * 1024 * 1024 &&
781 aperture != 128 * 1024 * 1024) {
782 device_printf(dev, "bad aperture size %d\n", aperture);
783 return EINVAL;
784 }
785 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2);
786 gcc1 &= ~AGP_I830_GCC1_GMASIZE;
787 if (aperture == 64 * 1024 * 1024)
788 gcc1 |= AGP_I830_GCC1_GMASIZE_64;
789 else
790 gcc1 |= AGP_I830_GCC1_GMASIZE_128;
791
792 pci_write_config(sc->bdev, AGP_I830_GCC1, gcc1, 2);
793 break;
794 case CHIP_I855:
795 case CHIP_I915:
796 case CHIP_I965:
797 case CHIP_G33:
798 case CHIP_G4X:
799 return agp_generic_set_aperture(dev, aperture);
800 }
801
802 return 0;
803 }
804
805 /**
806 * Writes a GTT entry mapping the page at the given offset from the beginning
807 * of the aperture to the given physical address.
808 */
809 static void
810 agp_i810_write_gtt_entry(device_t dev, int offset, vm_offset_t physical,
811 int enabled)
812 {
813 struct agp_i810_softc *sc = device_get_softc(dev);
814 u_int32_t pte;
815
816 pte = (u_int32_t)physical | 1;
817 if (sc->chiptype == CHIP_I965 || sc->chiptype == CHIP_G33 ||
818 sc->chiptype == CHIP_G4X) {
819 pte |= (physical & 0x0000000f00000000ull) >> 28;
820 } else {
821 /* If we do actually have memory above 4GB on an older system,
822 * crash cleanly rather than scribble on system memory,
823 * so we know we need to fix it.
824 */
825 KASSERT((pte & 0x0000000f00000000ull) == 0,
826 (">4GB physical address in agp"));
827 }
828
829 switch (sc->chiptype) {
830 case CHIP_I810:
831 case CHIP_I830:
832 case CHIP_I855:
833 bus_write_4(sc->sc_res[0],
834 AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, pte);
835 break;
836 case CHIP_I915:
837 case CHIP_G33:
838 bus_write_4(sc->sc_res[1],
839 (offset >> AGP_PAGE_SHIFT) * 4, pte);
840 break;
841 case CHIP_I965:
842 bus_write_4(sc->sc_res[0],
843 (offset >> AGP_PAGE_SHIFT) * 4 + (512 * 1024), pte);
844 break;
845 case CHIP_G4X:
846 bus_write_4(sc->sc_res[0],
847 (offset >> AGP_PAGE_SHIFT) * 4 + (2 * 1024 * 1024), pte);
848 break;
849 }
850 }
851
852 static int
853 agp_i810_bind_page(device_t dev, int offset, vm_offset_t physical)
854 {
855 struct agp_i810_softc *sc = device_get_softc(dev);
856
857 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) {
858 device_printf(dev, "failed: offset is 0x%08x, shift is %d, entries is %d\n", offset, AGP_PAGE_SHIFT, sc->gatt->ag_entries);
859 return EINVAL;
860 }
861
862 if ( sc->chiptype != CHIP_I810 ) {
863 if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) {
864 device_printf(dev, "trying to bind into stolen memory");
865 return EINVAL;
866 }
867 }
868
869 agp_i810_write_gtt_entry(dev, offset, physical, 1);
870
871 return 0;
872 }
873
874 static int
875 agp_i810_unbind_page(device_t dev, int offset)
876 {
877 struct agp_i810_softc *sc = device_get_softc(dev);
878
879 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
880 return EINVAL;
881
882 if ( sc->chiptype != CHIP_I810 ) {
883 if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) {
884 device_printf(dev, "trying to unbind from stolen memory");
885 return EINVAL;
886 }
887 }
888
889 agp_i810_write_gtt_entry(dev, offset, 0, 0);
890
891 return 0;
892 }
893
894 /*
895 * Writing via memory mapped registers already flushes all TLBs.
896 */
897 static void
898 agp_i810_flush_tlb(device_t dev)
899 {
900 }
901
902 static int
903 agp_i810_enable(device_t dev, u_int32_t mode)
904 {
905
906 return 0;
907 }
908
909 static struct agp_memory *
910 agp_i810_alloc_memory(device_t dev, int type, vm_size_t size)
911 {
912 struct agp_i810_softc *sc = device_get_softc(dev);
913 struct agp_memory *mem;
914
915 if ((size & (AGP_PAGE_SIZE - 1)) != 0)
916 return 0;
917
918 if (sc->agp.as_allocated + size > sc->agp.as_maxmem)
919 return 0;
920
921 if (type == 1) {
922 /*
923 * Mapping local DRAM into GATT.
924 */
925 if ( sc->chiptype != CHIP_I810 )
926 return 0;
927 if (size != sc->dcache_size)
928 return 0;
929 } else if (type == 2) {
930 /*
931 * Type 2 is the contiguous physical memory type, that hands
932 * back a physical address. This is used for cursors on i810.
933 * Hand back as many single pages with physical as the user
934 * wants, but only allow one larger allocation (ARGB cursor)
935 * for simplicity.
936 */
937 if (size != AGP_PAGE_SIZE) {
938 if (sc->argb_cursor != NULL)
939 return 0;
940
941 /* Allocate memory for ARGB cursor, if we can. */
942 sc->argb_cursor = contigmalloc(size, M_AGP,
943 0, 0, ~0, PAGE_SIZE, 0);
944 if (sc->argb_cursor == NULL)
945 return 0;
946 }
947 }
948
949 mem = kmalloc(sizeof *mem, M_AGP, M_INTWAIT);
950 mem->am_id = sc->agp.as_nextid++;
951 mem->am_size = size;
952 mem->am_type = type;
953 if (type != 1 && (type != 2 || size == AGP_PAGE_SIZE))
954 mem->am_obj = vm_object_allocate(OBJT_DEFAULT,
955 atop(round_page(size)));
956 else
957 mem->am_obj = 0;
958
959 if (type == 2) {
960 if (size == AGP_PAGE_SIZE) {
961 /*
962 * Allocate and wire down the page now so that we can
963 * get its physical address.
964 */
965 vm_page_t m;
966
967 m = vm_page_grab(mem->am_obj, 0,
968 VM_ALLOC_NORMAL|VM_ALLOC_ZERO|VM_ALLOC_RETRY);
969 if ((m->flags & PG_ZERO) == 0)
970 vm_page_zero_fill(m);
971 vm_page_wire(m);
972 mem->am_physical = VM_PAGE_TO_PHYS(m);
973 vm_page_wakeup(m);
974 } else {
975 /* Our allocation is already nicely wired down for us.
976 * Just grab the physical address.
977 */
978 mem->am_physical = vtophys(sc->argb_cursor);
979 }
980 } else {
981 mem->am_physical = 0;
982 }
983
984 mem->am_offset = 0;
985 mem->am_is_bound = 0;
986 TAILQ_INSERT_TAIL(&sc->agp.as_memory, mem, am_link);
987 sc->agp.as_allocated += size;
988
989 return mem;
990 }
991
992 static int
993 agp_i810_free_memory(device_t dev, struct agp_memory *mem)
994 {
995 struct agp_i810_softc *sc = device_get_softc(dev);
996
997 if (mem->am_is_bound)
998 return EBUSY;
999
1000 if (mem->am_type == 2) {
1001 if (mem->am_size == AGP_PAGE_SIZE) {
1002 /*
1003 * Unwire the page which we wired in alloc_memory.
1004 */
1005 vm_page_t m = vm_page_lookup(mem->am_obj, 0);
1006 vm_page_unwire(m, 0);
1007 } else {
1008 contigfree(sc->argb_cursor, mem->am_size, M_AGP);
1009 sc->argb_cursor = NULL;
1010 }
1011 }
1012
1013 sc->agp.as_allocated -= mem->am_size;
1014 TAILQ_REMOVE(&sc->agp.as_memory, mem, am_link);
1015 if (mem->am_obj)
1016 vm_object_deallocate(mem->am_obj);
1017 kfree(mem, M_AGP);
1018 return 0;
1019 }
1020
1021 static int
1022 agp_i810_bind_memory(device_t dev, struct agp_memory *mem,
1023 vm_offset_t offset)
1024 {
1025 struct agp_i810_softc *sc = device_get_softc(dev);
1026 vm_offset_t i;
1027
1028 /* Do some sanity checks first. */
1029 if (offset < 0 || (offset & (AGP_PAGE_SIZE - 1)) != 0 ||
1030 offset + mem->am_size > AGP_GET_APERTURE(dev)) {
1031 device_printf(dev, "binding memory at bad offset %#x\n",
1032 (int)offset);
1033 return EINVAL;
1034 }
1035
1036 if (mem->am_type == 2 && mem->am_size != AGP_PAGE_SIZE) {
1037 lockmgr(&sc->agp.as_lock, LK_EXCLUSIVE);
1038 if (mem->am_is_bound) {
1039 lockmgr(&sc->agp.as_lock, LK_RELEASE);
1040 return EINVAL;
1041 }
1042 /* The memory's already wired down, just stick it in the GTT. */
1043 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) {
1044 agp_i810_write_gtt_entry(dev, offset + i,
1045 mem->am_physical + i, 1);
1046 }
1047 agp_flush_cache();
1048 mem->am_offset = offset;
1049 mem->am_is_bound = 1;
1050 lockmgr(&sc->agp.as_lock, LK_RELEASE);
1051 return 0;
1052 }
1053
1054 if (mem->am_type != 1)
1055 return agp_generic_bind_memory(dev, mem, offset);
1056
1057 if ( sc->chiptype != CHIP_I810 )
1058 return EINVAL;
1059
1060 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) {
1061 bus_write_4(sc->sc_res[0],
1062 AGP_I810_GTT + (i >> AGP_PAGE_SHIFT) * 4, i | 3);
1063 }
1064
1065 return 0;
1066 }
1067
1068 static int
1069 agp_i810_unbind_memory(device_t dev, struct agp_memory *mem)
1070 {
1071 struct agp_i810_softc *sc = device_get_softc(dev);
1072 vm_offset_t i;
1073
1074 if (mem->am_type == 2 && mem->am_size != AGP_PAGE_SIZE) {
1075 lockmgr(&sc->agp.as_lock, LK_EXCLUSIVE);
1076 if (!mem->am_is_bound) {
1077 lockmgr(&sc->agp.as_lock, LK_RELEASE);
1078 return EINVAL;
1079 }
1080
1081 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) {
1082 agp_i810_write_gtt_entry(dev, mem->am_offset + i,
1083 0, 0);
1084 }
1085 agp_flush_cache();
1086 mem->am_is_bound = 0;
1087 lockmgr(&sc->agp.as_lock, LK_RELEASE);
1088 return 0;
1089 }
1090
1091 if (mem->am_type != 1)
1092 return agp_generic_unbind_memory(dev, mem);
1093
1094 if ( sc->chiptype != CHIP_I810 )
1095 return EINVAL;
1096
1097 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) {
1098 bus_write_4(sc->sc_res[0],
1099 AGP_I810_GTT + (i >> AGP_PAGE_SHIFT) * 4, 0);
1100 }
1101
1102 return 0;
1103 }
1104
1105 static device_method_t agp_i810_methods[] = {
1106 /* Device interface */
1107 DEVMETHOD(device_identify, agp_i810_identify),
1108 DEVMETHOD(device_probe, agp_i810_probe),
1109 DEVMETHOD(device_attach, agp_i810_attach),
1110 DEVMETHOD(device_detach, agp_i810_detach),
1111 DEVMETHOD(device_suspend, bus_generic_suspend),
1112 DEVMETHOD(device_resume, agp_i810_resume),
1113
1114 /* AGP interface */
1115 DEVMETHOD(agp_get_aperture, agp_generic_get_aperture),
1116 DEVMETHOD(agp_set_aperture, agp_i810_set_aperture),
1117 DEVMETHOD(agp_bind_page, agp_i810_bind_page),
1118 DEVMETHOD(agp_unbind_page, agp_i810_unbind_page),
1119 DEVMETHOD(agp_flush_tlb, agp_i810_flush_tlb),
1120 DEVMETHOD(agp_enable, agp_i810_enable),
1121 DEVMETHOD(agp_alloc_memory, agp_i810_alloc_memory),
1122 DEVMETHOD(agp_free_memory, agp_i810_free_memory),
1123 DEVMETHOD(agp_bind_memory, agp_i810_bind_memory),
1124 DEVMETHOD(agp_unbind_memory, agp_i810_unbind_memory),
1125
1126 { 0, 0 }
1127 };
1128
1129 static driver_t agp_i810_driver = {
1130 "agp",
1131 agp_i810_methods,
1132 sizeof(struct agp_i810_softc),
1133 };
1134
1135 static devclass_t agp_devclass;
1136
1137 DRIVER_MODULE(agp_i810, pci, agp_i810_driver, agp_devclass, 0, 0);
1138 MODULE_DEPEND(agp_i810, agp, 1, 1, 1);
1139 MODULE_DEPEND(agp_i810, pci, 1, 1, 1);
DragonFly BSD