2 * Copyright (c) 2000 Doug Rabson
3 * Copyright (c) 2000 Ruslan Ermilov
4 * Copyright (c) 2011 The FreeBSD Foundation
5 * Copyright (c) 2017-2019 François Tigeot <ftigeot@wolfpond.org>
8 * Portions of this software were developed by Konstantin Belousov
9 * under sponsorship from the FreeBSD Foundation.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * Fixes for 830/845G support: David Dawes <dawes@xfree86.org>
35 * 852GM/855GM/865G support added by David Dawes <dawes@xfree86.org>
37 * This is generic Intel GTT handling code, morphed from the AGP
42 #define KTR_AGP_I810 KTR_DEV
44 #define KTR_AGP_I810 0
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/malloc.h>
50 #include <sys/kernel.h>
56 #include <bus/pci/pcivar.h>
57 #include <bus/pci/pcireg.h>
62 #include <vm/vm_object.h>
63 #include <vm/vm_page.h>
64 #include <vm/vm_param.h>
65 #include <vm/vm_pageout.h>
68 #include <vm/vm_page2.h>
70 #include <machine/md_var.h>
72 #include <linux/slab.h>
73 #include <linux/scatterlist.h>
74 #include <drm/intel-gtt.h>
76 struct agp_i810_match
;
78 static int agp_i915_check_active(device_t bridge_dev
);
80 static void agp_i810_set_desc(device_t dev
, const struct agp_i810_match
*match
);
82 static void agp_i915_dump_regs(device_t dev
);
83 static void agp_i965_dump_regs(device_t dev
);
85 static int agp_i915_get_stolen_size(device_t dev
);
87 static int agp_i915_get_gtt_mappable_entries(device_t dev
);
89 static int agp_i810_get_gtt_total_entries(device_t dev
);
90 static int agp_i965_get_gtt_total_entries(device_t dev
);
91 static int agp_gen5_get_gtt_total_entries(device_t dev
);
93 static int agp_i830_install_gatt(device_t dev
);
95 static void agp_i830_deinstall_gatt(device_t dev
);
97 static void agp_i915_install_gtt_pte(device_t dev
, u_int index
,
98 vm_offset_t physical
, int flags
);
99 static void agp_i965_install_gtt_pte(device_t dev
, u_int index
,
100 vm_offset_t physical
, int flags
);
101 static void agp_g4x_install_gtt_pte(device_t dev
, u_int index
,
102 vm_offset_t physical
, int flags
);
104 static void agp_i915_write_gtt(device_t dev
, u_int index
, uint32_t pte
);
105 static void agp_i965_write_gtt(device_t dev
, u_int index
, uint32_t pte
);
106 static void agp_g4x_write_gtt(device_t dev
, u_int index
, uint32_t pte
);
108 static void agp_i915_sync_gtt_pte(device_t dev
, u_int index
);
109 static void agp_i965_sync_gtt_pte(device_t dev
, u_int index
);
110 static void agp_g4x_sync_gtt_pte(device_t dev
, u_int index
);
112 static int agp_i915_set_aperture(device_t dev
, u_int32_t aperture
);
114 static int agp_i915_chipset_flush_setup(device_t dev
);
115 static int agp_i965_chipset_flush_setup(device_t dev
);
117 static void agp_i915_chipset_flush_teardown(device_t dev
);
118 static void agp_i965_chipset_flush_teardown(device_t dev
);
120 static void agp_i915_chipset_flush(device_t dev
);
123 CHIP_I810
, /* i810/i815 */
124 CHIP_I830
, /* 830M/845G */
125 CHIP_I855
, /* 852GM/855GM/865G */
126 CHIP_I915
, /* 915G/915GM */
127 CHIP_I965
, /* G965 */
128 CHIP_G33
, /* G33/Q33/Q35 */
129 CHIP_IGD
, /* Pineview */
130 CHIP_G4X
, /* G45/Q45 */
133 /* The i810 through i855 have the registers at BAR 1, and the GATT gets
134 * allocated by us. The i915 has registers in BAR 0 and the GATT is at the
135 * start of the stolen memory, and should only be accessed by the OS through
136 * BAR 3. The G965 has registers and GATT in the same BAR (0) -- first 512KB
137 * is registers, second 512KB is GATT.
139 static struct resource_spec agp_i915_res_spec
[] = {
140 { SYS_RES_MEMORY
, AGP_I915_MMADR
, RF_ACTIVE
| RF_SHAREABLE
},
141 { SYS_RES_MEMORY
, AGP_I915_GTTADR
, RF_ACTIVE
| RF_SHAREABLE
},
145 static struct resource_spec agp_i965_res_spec
[] = {
146 { SYS_RES_MEMORY
, AGP_I965_GTTMMADR
, RF_ACTIVE
| RF_SHAREABLE
},
150 struct agp_i810_softc
{
151 struct agp_softc agp
;
152 u_int32_t initial_aperture
; /* aperture size at startup */
153 struct agp_gatt
*gatt
;
154 u_int32_t dcache_size
; /* i810 only */
155 u_int32_t stolen
; /* number of i830/845 gtt
156 entries for stolen memory */
157 u_int stolen_size
; /* BIOS-reserved graphics memory */
158 u_int gtt_total_entries
; /* Total number of gtt ptes */
159 u_int gtt_mappable_entries
; /* Number of gtt ptes mappable by CPU */
160 device_t bdev
; /* bridge device */
161 void *argb_cursor
; /* contigmalloc area for ARGB cursor */
162 struct resource
*sc_res
[3];
163 const struct agp_i810_match
*match
;
164 int sc_flush_page_rid
;
165 struct resource
*sc_flush_page_res
;
166 void *sc_flush_page_vaddr
;
167 int sc_bios_allocated_flush_page
;
170 static device_t intel_agp
;
172 struct agp_i810_driver
{
175 int busdma_addr_mask_sz
;
176 struct resource_spec
*res_spec
;
177 int (*check_active
)(device_t
);
178 void (*set_desc
)(device_t
, const struct agp_i810_match
*);
179 void (*dump_regs
)(device_t
);
180 int (*get_stolen_size
)(device_t
);
181 int (*get_gtt_total_entries
)(device_t
);
182 int (*get_gtt_mappable_entries
)(device_t
);
183 int (*install_gatt
)(device_t
);
184 void (*deinstall_gatt
)(device_t
);
185 void (*write_gtt
)(device_t
, u_int
, uint32_t);
186 void (*install_gtt_pte
)(device_t
, u_int
, vm_offset_t
, int);
187 void (*sync_gtt_pte
)(device_t
, u_int
);
188 int (*set_aperture
)(device_t
, u_int32_t
);
189 int (*chipset_flush_setup
)(device_t
);
190 void (*chipset_flush_teardown
)(device_t
);
191 void (*chipset_flush
)(device_t
);
195 struct intel_gtt base
;
198 static const struct agp_i810_driver agp_i810_i915_driver
= {
199 .chiptype
= CHIP_I915
,
201 .busdma_addr_mask_sz
= 32,
202 .res_spec
= agp_i915_res_spec
,
203 .check_active
= agp_i915_check_active
,
204 .set_desc
= agp_i810_set_desc
,
205 .dump_regs
= agp_i915_dump_regs
,
206 .get_stolen_size
= agp_i915_get_stolen_size
,
207 .get_gtt_mappable_entries
= agp_i915_get_gtt_mappable_entries
,
208 .get_gtt_total_entries
= agp_i810_get_gtt_total_entries
,
209 .install_gatt
= agp_i830_install_gatt
,
210 .deinstall_gatt
= agp_i830_deinstall_gatt
,
211 .write_gtt
= agp_i915_write_gtt
,
212 .install_gtt_pte
= agp_i915_install_gtt_pte
,
213 .sync_gtt_pte
= agp_i915_sync_gtt_pte
,
214 .set_aperture
= agp_i915_set_aperture
,
215 .chipset_flush_setup
= agp_i915_chipset_flush_setup
,
216 .chipset_flush_teardown
= agp_i915_chipset_flush_teardown
,
217 .chipset_flush
= agp_i915_chipset_flush
,
220 static const struct agp_i810_driver agp_i810_g965_driver
= {
221 .chiptype
= CHIP_I965
,
223 .busdma_addr_mask_sz
= 36,
224 .res_spec
= agp_i965_res_spec
,
225 .check_active
= agp_i915_check_active
,
226 .set_desc
= agp_i810_set_desc
,
227 .dump_regs
= agp_i965_dump_regs
,
228 .get_stolen_size
= agp_i915_get_stolen_size
,
229 .get_gtt_mappable_entries
= agp_i915_get_gtt_mappable_entries
,
230 .get_gtt_total_entries
= agp_i965_get_gtt_total_entries
,
231 .install_gatt
= agp_i830_install_gatt
,
232 .deinstall_gatt
= agp_i830_deinstall_gatt
,
233 .write_gtt
= agp_i965_write_gtt
,
234 .install_gtt_pte
= agp_i965_install_gtt_pte
,
235 .sync_gtt_pte
= agp_i965_sync_gtt_pte
,
236 .set_aperture
= agp_i915_set_aperture
,
237 .chipset_flush_setup
= agp_i965_chipset_flush_setup
,
238 .chipset_flush_teardown
= agp_i965_chipset_flush_teardown
,
239 .chipset_flush
= agp_i915_chipset_flush
,
242 static const struct agp_i810_driver agp_i810_g33_driver
= {
243 .chiptype
= CHIP_G33
,
245 .busdma_addr_mask_sz
= 36,
246 .res_spec
= agp_i915_res_spec
,
247 .check_active
= agp_i915_check_active
,
248 .set_desc
= agp_i810_set_desc
,
249 .dump_regs
= agp_i965_dump_regs
,
250 .get_stolen_size
= agp_i915_get_stolen_size
,
251 .get_gtt_mappable_entries
= agp_i915_get_gtt_mappable_entries
,
252 .get_gtt_total_entries
= agp_i965_get_gtt_total_entries
,
253 .install_gatt
= agp_i830_install_gatt
,
254 .deinstall_gatt
= agp_i830_deinstall_gatt
,
255 .write_gtt
= agp_i915_write_gtt
,
256 .install_gtt_pte
= agp_i965_install_gtt_pte
,
257 .sync_gtt_pte
= agp_i915_sync_gtt_pte
,
258 .set_aperture
= agp_i915_set_aperture
,
259 .chipset_flush_setup
= agp_i965_chipset_flush_setup
,
260 .chipset_flush_teardown
= agp_i965_chipset_flush_teardown
,
261 .chipset_flush
= agp_i915_chipset_flush
,
264 static const struct agp_i810_driver pineview_gtt_driver
= {
265 .chiptype
= CHIP_IGD
,
267 .busdma_addr_mask_sz
= 36,
268 .res_spec
= agp_i915_res_spec
,
269 .check_active
= agp_i915_check_active
,
270 .set_desc
= agp_i810_set_desc
,
271 .dump_regs
= agp_i915_dump_regs
,
272 .get_stolen_size
= agp_i915_get_stolen_size
,
273 .get_gtt_mappable_entries
= agp_i915_get_gtt_mappable_entries
,
274 .get_gtt_total_entries
= agp_i965_get_gtt_total_entries
,
275 .install_gatt
= agp_i830_install_gatt
,
276 .deinstall_gatt
= agp_i830_deinstall_gatt
,
277 .write_gtt
= agp_i915_write_gtt
,
278 .install_gtt_pte
= agp_i965_install_gtt_pte
,
279 .sync_gtt_pte
= agp_i915_sync_gtt_pte
,
280 .set_aperture
= agp_i915_set_aperture
,
281 .chipset_flush_setup
= agp_i965_chipset_flush_setup
,
282 .chipset_flush_teardown
= agp_i965_chipset_flush_teardown
,
283 .chipset_flush
= agp_i915_chipset_flush
,
286 static const struct agp_i810_driver agp_i810_g4x_driver
= {
287 .chiptype
= CHIP_G4X
,
289 .busdma_addr_mask_sz
= 36,
290 .res_spec
= agp_i965_res_spec
,
291 .check_active
= agp_i915_check_active
,
292 .set_desc
= agp_i810_set_desc
,
293 .dump_regs
= agp_i965_dump_regs
,
294 .get_stolen_size
= agp_i915_get_stolen_size
,
295 .get_gtt_mappable_entries
= agp_i915_get_gtt_mappable_entries
,
296 .get_gtt_total_entries
= agp_gen5_get_gtt_total_entries
,
297 .install_gatt
= agp_i830_install_gatt
,
298 .deinstall_gatt
= agp_i830_deinstall_gatt
,
299 .write_gtt
= agp_g4x_write_gtt
,
300 .install_gtt_pte
= agp_g4x_install_gtt_pte
,
301 .sync_gtt_pte
= agp_g4x_sync_gtt_pte
,
302 .set_aperture
= agp_i915_set_aperture
,
303 .chipset_flush_setup
= agp_i965_chipset_flush_setup
,
304 .chipset_flush_teardown
= agp_i965_chipset_flush_teardown
,
305 .chipset_flush
= agp_i915_chipset_flush
,
308 /* For adding new devices, devid is the id of the graphics controller
309 * (pci:0:2:0, for example). The placeholder (usually at pci:0:2:1) for the
310 * second head should never be added. The bridge_offset is the offset to
311 * subtract from devid to get the id of the hostb that the device is on.
313 static const struct agp_i810_match
{
316 const struct agp_i810_driver
*driver
;
317 } agp_i810_matches
[] = {
320 .name
= "Intel 82915G (915G GMCH) SVGA controller",
321 .driver
= &agp_i810_i915_driver
325 .name
= "Intel E7221 SVGA controller",
326 .driver
= &agp_i810_i915_driver
330 .name
= "Intel 82915GM (915GM GMCH) SVGA controller",
331 .driver
= &agp_i810_i915_driver
335 .name
= "Intel 82945G (945G GMCH) SVGA controller",
336 .driver
= &agp_i810_i915_driver
340 .name
= "Intel 82945GM (945GM GMCH) SVGA controller",
341 .driver
= &agp_i810_i915_driver
345 .name
= "Intel 945GME SVGA controller",
346 .driver
= &agp_i810_i915_driver
350 .name
= "Intel 946GZ SVGA controller",
351 .driver
= &agp_i810_g965_driver
355 .name
= "Intel G965 SVGA controller",
356 .driver
= &agp_i810_g965_driver
360 .name
= "Intel Q965 SVGA controller",
361 .driver
= &agp_i810_g965_driver
365 .name
= "Intel G965 SVGA controller",
366 .driver
= &agp_i810_g965_driver
370 .name
= "Intel Q35 SVGA controller",
371 .driver
= &agp_i810_g33_driver
375 .name
= "Intel G33 SVGA controller",
376 .driver
= &agp_i810_g33_driver
380 .name
= "Intel Q33 SVGA controller",
381 .driver
= &agp_i810_g33_driver
385 .name
= "Intel Pineview SVGA controller",
386 .driver
= &pineview_gtt_driver
390 .name
= "Intel Pineview (M) SVGA controller",
391 .driver
= &pineview_gtt_driver
395 .name
= "Intel GM965 SVGA controller",
396 .driver
= &agp_i810_g965_driver
400 .name
= "Intel GME965 SVGA controller",
401 .driver
= &agp_i810_g965_driver
405 .name
= "Intel GM45 SVGA controller",
406 .driver
= &agp_i810_g4x_driver
410 .name
= "Intel Eaglelake SVGA controller",
411 .driver
= &agp_i810_g4x_driver
415 .name
= "Intel Q45 SVGA controller",
416 .driver
= &agp_i810_g4x_driver
420 .name
= "Intel G45 SVGA controller",
421 .driver
= &agp_i810_g4x_driver
425 .name
= "Intel G41 SVGA controller",
426 .driver
= &agp_i810_g4x_driver
430 .name
= "Intel Ironlake (D) SVGA controller",
431 .driver
= &agp_i810_g4x_driver
435 .name
= "Intel Ironlake (M) SVGA controller",
436 .driver
= &agp_i810_g4x_driver
444 static const struct agp_i810_match
*
445 agp_i810_match(device_t dev
)
449 if (pci_get_vendor(dev
) != PCI_VENDOR_INTEL
)
452 devid
= pci_get_device(dev
);
453 for (i
= 0; agp_i810_matches
[i
].devid
!= 0; i
++) {
454 if (agp_i810_matches
[i
].devid
== devid
)
457 if (agp_i810_matches
[i
].devid
== 0)
460 return (&agp_i810_matches
[i
]);
464 * Find bridge device.
467 agp_i810_find_bridge(device_t dev
)
470 return (pci_find_dbsf(0, 0, 0, 0));
474 agp_i810_identify(driver_t
*driver
, device_t parent
)
477 if (device_find_child(parent
, "agp", -1) == NULL
&&
478 agp_i810_match(parent
))
479 device_add_child(parent
, "agp", -1);
483 agp_i915_check_active(device_t bridge_dev
)
487 deven
= pci_read_config(bridge_dev
, AGP_I915_DEVEN
, 4);
488 if ((deven
& AGP_I915_DEVEN_D2F0
) == AGP_I915_DEVEN_D2F0_DISABLED
)
494 agp_i810_set_desc(device_t dev
, const struct agp_i810_match
*match
)
497 device_set_desc(dev
, match
->name
);
501 agp_i810_probe(device_t dev
)
504 const struct agp_i810_match
*match
;
507 if (resource_disabled("agp", device_get_unit(dev
)))
509 match
= agp_i810_match(dev
);
513 bdev
= agp_i810_find_bridge(dev
);
516 kprintf("I810: can't find bridge device\n");
521 * checking whether internal graphics device has been activated.
523 if (match
->driver
->check_active
!= NULL
) {
524 err
= match
->driver
->check_active(bdev
);
527 kprintf("i810: disabled, not probing\n");
532 match
->driver
->set_desc(dev
, match
);
533 return (BUS_PROBE_DEFAULT
);
537 agp_i915_dump_regs(device_t dev
)
539 struct agp_i810_softc
*sc
= device_get_softc(dev
);
541 device_printf(dev
, "AGP_I810_PGTBL_CTL: %08x\n",
542 bus_read_4(sc
->sc_res
[0], AGP_I810_PGTBL_CTL
));
543 device_printf(dev
, "AGP_I855_GCC1: 0x%02x\n",
544 pci_read_config(sc
->bdev
, AGP_I855_GCC1
, 1));
545 device_printf(dev
, "AGP_I915_MSAC: 0x%02x\n",
546 pci_read_config(sc
->bdev
, AGP_I915_MSAC
, 1));
550 agp_i965_dump_regs(device_t dev
)
552 struct agp_i810_softc
*sc
= device_get_softc(dev
);
554 device_printf(dev
, "AGP_I965_PGTBL_CTL2: %08x\n",
555 bus_read_4(sc
->sc_res
[0], AGP_I965_PGTBL_CTL2
));
556 device_printf(dev
, "AGP_I855_GCC1: 0x%02x\n",
557 pci_read_config(dev
, AGP_I855_GCC1
, 1));
558 device_printf(dev
, "AGP_I965_MSAC: 0x%02x\n",
559 pci_read_config(dev
, AGP_I965_MSAC
, 1));
563 agp_i915_get_stolen_size(device_t dev
)
565 struct agp_i810_softc
*sc
;
566 unsigned int gcc1
, stolen
, gtt_size
;
568 sc
= device_get_softc(dev
);
571 * Stolen memory is set up at the beginning of the aperture by
572 * the BIOS, consisting of the GATT followed by 4kb for the
575 switch (sc
->match
->driver
->chiptype
) {
583 switch (bus_read_4(sc
->sc_res
[0], AGP_I810_PGTBL_CTL
) &
584 AGP_I810_PGTBL_SIZE_MASK
) {
585 case AGP_I810_PGTBL_SIZE_128KB
:
588 case AGP_I810_PGTBL_SIZE_256KB
:
591 case AGP_I810_PGTBL_SIZE_512KB
:
594 case AGP_I965_PGTBL_SIZE_1MB
:
597 case AGP_I965_PGTBL_SIZE_2MB
:
600 case AGP_I965_PGTBL_SIZE_1_5MB
:
601 gtt_size
= 1024 + 512;
604 device_printf(dev
, "Bad PGTBL size\n");
609 gcc1
= pci_read_config(sc
->bdev
, AGP_I855_GCC1
, 2);
610 switch (gcc1
& AGP_G33_MGGC_GGMS_MASK
) {
611 case AGP_G33_MGGC_GGMS_SIZE_1M
:
614 case AGP_G33_MGGC_GGMS_SIZE_2M
:
618 device_printf(dev
, "Bad PGTBL size\n");
627 device_printf(dev
, "Bad chiptype\n");
631 /* GCC1 is called MGGC on i915+ */
632 gcc1
= pci_read_config(sc
->bdev
, AGP_I855_GCC1
, 1);
633 switch (gcc1
& AGP_I855_GCC1_GMS
) {
634 case AGP_I855_GCC1_GMS_STOLEN_1M
:
637 case AGP_I855_GCC1_GMS_STOLEN_4M
:
640 case AGP_I855_GCC1_GMS_STOLEN_8M
:
643 case AGP_I855_GCC1_GMS_STOLEN_16M
:
646 case AGP_I855_GCC1_GMS_STOLEN_32M
:
649 case AGP_I915_GCC1_GMS_STOLEN_48M
:
650 stolen
= sc
->match
->driver
->gen
> 2 ? 48 * 1024 : 0;
652 case AGP_I915_GCC1_GMS_STOLEN_64M
:
653 stolen
= sc
->match
->driver
->gen
> 2 ? 64 * 1024 : 0;
655 case AGP_G33_GCC1_GMS_STOLEN_128M
:
656 stolen
= sc
->match
->driver
->gen
> 2 ? 128 * 1024 : 0;
658 case AGP_G33_GCC1_GMS_STOLEN_256M
:
659 stolen
= sc
->match
->driver
->gen
> 2 ? 256 * 1024 : 0;
661 case AGP_G4X_GCC1_GMS_STOLEN_96M
:
662 if (sc
->match
->driver
->chiptype
== CHIP_I965
||
663 sc
->match
->driver
->chiptype
== CHIP_G4X
)
668 case AGP_G4X_GCC1_GMS_STOLEN_160M
:
669 if (sc
->match
->driver
->chiptype
== CHIP_I965
||
670 sc
->match
->driver
->chiptype
== CHIP_G4X
)
675 case AGP_G4X_GCC1_GMS_STOLEN_224M
:
676 if (sc
->match
->driver
->chiptype
== CHIP_I965
||
677 sc
->match
->driver
->chiptype
== CHIP_G4X
)
682 case AGP_G4X_GCC1_GMS_STOLEN_352M
:
683 if (sc
->match
->driver
->chiptype
== CHIP_I965
||
684 sc
->match
->driver
->chiptype
== CHIP_G4X
)
691 "unknown memory configuration, disabling (GCC1 %x)\n",
697 sc
->stolen_size
= stolen
* 1024;
698 sc
->stolen
= (stolen
- gtt_size
) * 1024 / 4096;
704 agp_i915_get_gtt_mappable_entries(device_t dev
)
706 struct agp_i810_softc
*sc
;
709 sc
= device_get_softc(dev
);
710 ap
= AGP_GET_APERTURE(dev
);
711 sc
->gtt_mappable_entries
= ap
>> AGP_PAGE_SHIFT
;
716 agp_i810_get_gtt_total_entries(device_t dev
)
718 struct agp_i810_softc
*sc
;
720 sc
= device_get_softc(dev
);
721 sc
->gtt_total_entries
= sc
->gtt_mappable_entries
;
726 agp_i965_get_gtt_total_entries(device_t dev
)
728 struct agp_i810_softc
*sc
;
732 sc
= device_get_softc(dev
);
734 pgetbl_ctl
= bus_read_4(sc
->sc_res
[0], AGP_I810_PGTBL_CTL
);
735 switch (pgetbl_ctl
& AGP_I810_PGTBL_SIZE_MASK
) {
736 case AGP_I810_PGTBL_SIZE_128KB
:
737 sc
->gtt_total_entries
= 128 * 1024 / 4;
739 case AGP_I810_PGTBL_SIZE_256KB
:
740 sc
->gtt_total_entries
= 256 * 1024 / 4;
742 case AGP_I810_PGTBL_SIZE_512KB
:
743 sc
->gtt_total_entries
= 512 * 1024 / 4;
745 /* GTT pagetable sizes bigger than 512KB are not possible on G33! */
746 case AGP_I810_PGTBL_SIZE_1MB
:
747 sc
->gtt_total_entries
= 1024 * 1024 / 4;
749 case AGP_I810_PGTBL_SIZE_2MB
:
750 sc
->gtt_total_entries
= 2 * 1024 * 1024 / 4;
752 case AGP_I810_PGTBL_SIZE_1_5MB
:
753 sc
->gtt_total_entries
= (1024 + 512) * 1024 / 4;
756 device_printf(dev
, "Unknown page table size\n");
763 agp_gen5_adjust_pgtbl_size(device_t dev
, uint32_t sz
)
765 struct agp_i810_softc
*sc
;
766 uint32_t pgetbl_ctl
, pgetbl_ctl2
;
768 sc
= device_get_softc(dev
);
770 /* Disable per-process page table. */
771 pgetbl_ctl2
= bus_read_4(sc
->sc_res
[0], AGP_I965_PGTBL_CTL2
);
772 pgetbl_ctl2
&= ~AGP_I810_PGTBL_ENABLED
;
773 bus_write_4(sc
->sc_res
[0], AGP_I965_PGTBL_CTL2
, pgetbl_ctl2
);
775 /* Write the new ggtt size. */
776 pgetbl_ctl
= bus_read_4(sc
->sc_res
[0], AGP_I810_PGTBL_CTL
);
777 pgetbl_ctl
&= ~AGP_I810_PGTBL_SIZE_MASK
;
779 bus_write_4(sc
->sc_res
[0], AGP_I810_PGTBL_CTL
, pgetbl_ctl
);
783 agp_gen5_get_gtt_total_entries(device_t dev
)
785 struct agp_i810_softc
*sc
;
788 sc
= device_get_softc(dev
);
790 gcc1
= pci_read_config(sc
->bdev
, AGP_I830_GCC1
, 2);
791 switch (gcc1
& AGP_G4x_GCC1_SIZE_MASK
) {
792 case AGP_G4x_GCC1_SIZE_1M
:
793 case AGP_G4x_GCC1_SIZE_VT_1M
:
794 agp_gen5_adjust_pgtbl_size(dev
, AGP_I810_PGTBL_SIZE_1MB
);
796 case AGP_G4x_GCC1_SIZE_VT_1_5M
:
797 agp_gen5_adjust_pgtbl_size(dev
, AGP_I810_PGTBL_SIZE_1_5MB
);
799 case AGP_G4x_GCC1_SIZE_2M
:
800 case AGP_G4x_GCC1_SIZE_VT_2M
:
801 agp_gen5_adjust_pgtbl_size(dev
, AGP_I810_PGTBL_SIZE_2MB
);
804 device_printf(dev
, "Unknown page table size\n");
808 return (agp_i965_get_gtt_total_entries(dev
));
812 agp_i830_install_gatt(device_t dev
)
814 struct agp_i810_softc
*sc
;
817 sc
= device_get_softc(dev
);
820 * The i830 automatically initializes the 128k gatt on boot.
821 * GATT address is already in there, make sure it's enabled.
823 pgtblctl
= bus_read_4(sc
->sc_res
[0], AGP_I810_PGTBL_CTL
);
825 bus_write_4(sc
->sc_res
[0], AGP_I810_PGTBL_CTL
, pgtblctl
);
827 sc
->gatt
->ag_physical
= pgtblctl
& ~1;
832 agp_i810_attach(device_t dev
)
834 struct agp_i810_softc
*sc
;
837 sc
= device_get_softc(dev
);
838 sc
->bdev
= agp_i810_find_bridge(dev
);
839 if (sc
->bdev
== NULL
)
842 sc
->match
= agp_i810_match(dev
);
844 agp_set_aperture_resource(dev
, sc
->match
->driver
->gen
<= 2 ?
845 AGP_APBASE
: AGP_I915_GMADR
);
846 error
= agp_generic_attach(dev
);
850 if (ptoa((vm_paddr_t
)Maxmem
) >
851 (1ULL << sc
->match
->driver
->busdma_addr_mask_sz
) - 1) {
852 device_printf(dev
, "agp_i810 does not support physical "
853 "memory above %ju.\n", (uintmax_t)(1ULL <<
854 sc
->match
->driver
->busdma_addr_mask_sz
) - 1);
858 if (bus_alloc_resources(dev
, sc
->match
->driver
->res_spec
, sc
->sc_res
)) {
859 agp_generic_detach(dev
);
863 sc
->initial_aperture
= AGP_GET_APERTURE(dev
);
864 sc
->gatt
= kmalloc(sizeof(struct agp_gatt
), M_DRM
, M_WAITOK
);
865 sc
->gatt
->ag_entries
= AGP_GET_APERTURE(dev
) >> AGP_PAGE_SHIFT
;
867 if ((error
= sc
->match
->driver
->get_stolen_size(dev
)) != 0 ||
868 (error
= sc
->match
->driver
->install_gatt(dev
)) != 0 ||
869 (error
= sc
->match
->driver
->get_gtt_mappable_entries(dev
)) != 0 ||
870 (error
= sc
->match
->driver
->get_gtt_total_entries(dev
)) != 0 ||
871 (error
= sc
->match
->driver
->chipset_flush_setup(dev
)) != 0) {
872 bus_release_resources(dev
, sc
->match
->driver
->res_spec
,
875 agp_generic_detach(dev
);
880 device_printf(dev
, "aperture size is %dM",
881 sc
->initial_aperture
/ 1024 / 1024);
883 kprintf(", detected %dk stolen memory\n", sc
->stolen
* 4);
887 sc
->match
->driver
->dump_regs(dev
);
888 device_printf(dev
, "Mappable GTT entries: %d\n",
889 sc
->gtt_mappable_entries
);
890 device_printf(dev
, "Total GTT entries: %d\n",
891 sc
->gtt_total_entries
);
897 agp_i830_deinstall_gatt(device_t dev
)
899 struct agp_i810_softc
*sc
;
900 unsigned int pgtblctl
;
902 sc
= device_get_softc(dev
);
903 pgtblctl
= bus_read_4(sc
->sc_res
[0], AGP_I810_PGTBL_CTL
);
905 bus_write_4(sc
->sc_res
[0], AGP_I810_PGTBL_CTL
, pgtblctl
);
909 agp_i810_detach(device_t dev
)
911 struct agp_i810_softc
*sc
;
913 sc
= device_get_softc(dev
);
916 /* Clear the GATT base. */
917 sc
->match
->driver
->deinstall_gatt(dev
);
919 sc
->match
->driver
->chipset_flush_teardown(dev
);
921 /* Put the aperture back the way it started. */
922 AGP_SET_APERTURE(dev
, sc
->initial_aperture
);
925 bus_release_resources(dev
, sc
->match
->driver
->res_spec
, sc
->sc_res
);
932 agp_i810_resume(device_t dev
)
934 struct agp_i810_softc
*sc
;
935 sc
= device_get_softc(dev
);
937 AGP_SET_APERTURE(dev
, sc
->initial_aperture
);
939 /* Install the GATT. */
940 bus_write_4(sc
->sc_res
[0], AGP_I810_PGTBL_CTL
,
941 sc
->gatt
->ag_physical
| 1);
943 return (bus_generic_resume(dev
));
947 * Sets the PCI resource size of the aperture on i830-class and below chipsets,
948 * while returning failure on later chipsets when an actual change is
951 * This whole function is likely bogus, as the kernel would probably need to
952 * reconfigure the placement of the AGP aperture if a larger size is requested,
953 * which doesn't happen currently.
957 agp_i915_set_aperture(device_t dev
, u_int32_t aperture
)
960 return (agp_generic_set_aperture(dev
, aperture
));
964 agp_i810_method_set_aperture(device_t dev
, u_int32_t aperture
)
966 struct agp_i810_softc
*sc
;
968 sc
= device_get_softc(dev
);
969 return (sc
->match
->driver
->set_aperture(dev
, aperture
));
973 * Writes a GTT entry mapping the page at the given offset from the
974 * beginning of the aperture to the given physical address. Setup the
975 * caching mode according to flags.
977 * For gen 1, 2 and 3, GTT start is located at AGP_I810_GTT offset
978 * from corresponding BAR start. For gen 4, offset is 512KB +
979 * AGP_I810_GTT, for gen 5 and 6 it is 2MB + AGP_I810_GTT.
981 * Also, the bits of the physical page address above 4GB needs to be
982 * placed into bits 40-32 of PTE.
985 agp_i915_install_gtt_pte(device_t dev
, u_int index
, vm_offset_t physical
,
990 pte
= (u_int32_t
)physical
| I810_PTE_VALID
;
991 if (flags
== AGP_USER_CACHED_MEMORY
)
992 pte
|= I830_PTE_SYSTEM_CACHED
;
994 agp_i915_write_gtt(dev
, index
, pte
);
998 agp_i915_write_gtt(device_t dev
, u_int index
, uint32_t pte
)
1000 struct agp_i810_softc
*sc
;
1002 sc
= device_get_softc(dev
);
1003 bus_write_4(sc
->sc_res
[0], index
* 4, pte
);
1007 agp_i965_install_gtt_pte(device_t dev
, u_int index
, vm_offset_t physical
,
1012 pte
= (u_int32_t
)physical
| I810_PTE_VALID
;
1013 if (flags
== AGP_USER_CACHED_MEMORY
)
1014 pte
|= I830_PTE_SYSTEM_CACHED
;
1016 pte
|= (physical
>> 28) & 0xf0;
1017 agp_i965_write_gtt(dev
, index
, pte
);
1021 agp_i965_write_gtt(device_t dev
, u_int index
, uint32_t pte
)
1023 struct agp_i810_softc
*sc
;
1025 sc
= device_get_softc(dev
);
1026 bus_write_4(sc
->sc_res
[0], index
* 4 + (512 * 1024), pte
);
1030 agp_g4x_install_gtt_pte(device_t dev
, u_int index
, vm_offset_t physical
,
1035 pte
= (u_int32_t
)physical
| I810_PTE_VALID
;
1036 if (flags
== AGP_USER_CACHED_MEMORY
)
1037 pte
|= I830_PTE_SYSTEM_CACHED
;
1039 pte
|= (physical
>> 28) & 0xf0;
1040 agp_g4x_write_gtt(dev
, index
, pte
);
1044 agp_g4x_write_gtt(device_t dev
, u_int index
, uint32_t pte
)
1046 struct agp_i810_softc
*sc
;
1048 sc
= device_get_softc(dev
);
1049 bus_write_4(sc
->sc_res
[0], index
* 4 + (2 * 1024 * 1024), pte
);
1053 agp_i810_bind_page(device_t dev
, vm_offset_t offset
, vm_offset_t physical
)
1055 struct agp_i810_softc
*sc
= device_get_softc(dev
);
1058 if (offset
>= (sc
->gatt
->ag_entries
<< AGP_PAGE_SHIFT
)) {
1059 device_printf(dev
, "failed: offset is 0x%08jx, "
1060 "shift is %d, entries is %d\n", (intmax_t)offset
,
1061 AGP_PAGE_SHIFT
, sc
->gatt
->ag_entries
);
1064 index
= offset
>> AGP_PAGE_SHIFT
;
1065 if (sc
->stolen
!= 0 && index
< sc
->stolen
) {
1066 device_printf(dev
, "trying to bind into stolen memory\n");
1069 sc
->match
->driver
->install_gtt_pte(dev
, index
, physical
, 0);
1074 agp_i810_unbind_page(device_t dev
, vm_offset_t offset
)
1076 struct agp_i810_softc
*sc
;
1079 sc
= device_get_softc(dev
);
1080 if (offset
>= (sc
->gatt
->ag_entries
<< AGP_PAGE_SHIFT
))
1082 index
= offset
>> AGP_PAGE_SHIFT
;
1083 if (sc
->stolen
!= 0 && index
< sc
->stolen
) {
1084 device_printf(dev
, "trying to unbind from stolen memory\n");
1087 sc
->match
->driver
->install_gtt_pte(dev
, index
, 0, 0);
1092 agp_i915_sync_gtt_pte(device_t dev
, u_int index
)
1094 struct agp_i810_softc
*sc
;
1096 sc
= device_get_softc(dev
);
1097 bus_read_4(sc
->sc_res
[1], index
* 4);
1101 agp_i965_sync_gtt_pte(device_t dev
, u_int index
)
1103 struct agp_i810_softc
*sc
;
1105 sc
= device_get_softc(dev
);
1106 bus_read_4(sc
->sc_res
[0], index
* 4 + (512 * 1024));
1110 agp_g4x_sync_gtt_pte(device_t dev
, u_int index
)
1112 struct agp_i810_softc
*sc
;
1114 sc
= device_get_softc(dev
);
1115 bus_read_4(sc
->sc_res
[0], index
* 4 + (2 * 1024 * 1024));
1119 * Writing via memory mapped registers already flushes all TLBs.
1122 agp_i810_flush_tlb(device_t dev
)
1127 agp_i810_enable(device_t dev
, u_int32_t mode
)
1133 static struct agp_memory
*
1134 agp_i810_alloc_memory(device_t dev
, int type
, vm_size_t size
)
1136 struct agp_i810_softc
*sc
;
1137 struct agp_memory
*mem
;
1140 sc
= device_get_softc(dev
);
1142 if ((size
& (AGP_PAGE_SIZE
- 1)) != 0 ||
1143 sc
->agp
.as_allocated
+ size
> sc
->agp
.as_maxmem
)
1148 * Mapping local DRAM into GATT.
1150 if (sc
->match
->driver
->chiptype
!= CHIP_I810
)
1152 if (size
!= sc
->dcache_size
)
1154 } else if (type
== 2) {
1156 * Type 2 is the contiguous physical memory type, that hands
1157 * back a physical address. This is used for cursors on i810.
1158 * Hand back as many single pages with physical as the user
1159 * wants, but only allow one larger allocation (ARGB cursor)
1162 if (size
!= AGP_PAGE_SIZE
) {
1163 if (sc
->argb_cursor
!= NULL
)
1166 /* Allocate memory for ARGB cursor, if we can. */
1167 sc
->argb_cursor
= contigmalloc(size
, M_DRM
,
1168 0, 0, ~0, PAGE_SIZE
, 0);
1169 if (sc
->argb_cursor
== NULL
)
1174 mem
= kmalloc(sizeof *mem
, M_DRM
, M_INTWAIT
);
1175 mem
->am_id
= sc
->agp
.as_nextid
++;
1176 mem
->am_size
= size
;
1177 mem
->am_type
= type
;
1178 if (type
!= 1 && (type
!= 2 || size
== AGP_PAGE_SIZE
))
1179 mem
->am_obj
= vm_object_allocate(OBJT_DEFAULT
,
1180 atop(round_page(size
)));
1185 if (size
== AGP_PAGE_SIZE
) {
1187 * Allocate and wire down the page now so that we can
1188 * get its physical address.
1190 VM_OBJECT_LOCK(mem
->am_obj
);
1191 m
= vm_page_grab(mem
->am_obj
, 0, VM_ALLOC_NORMAL
|
1195 VM_OBJECT_UNLOCK(mem
->am_obj
);
1196 mem
->am_physical
= VM_PAGE_TO_PHYS(m
);
1199 /* Our allocation is already nicely wired down for us.
1200 * Just grab the physical address.
1202 mem
->am_physical
= vtophys(sc
->argb_cursor
);
1205 mem
->am_physical
= 0;
1208 mem
->am_is_bound
= 0;
1209 TAILQ_INSERT_TAIL(&sc
->agp
.as_memory
, mem
, am_link
);
1210 sc
->agp
.as_allocated
+= size
;
1216 agp_i810_free_memory(device_t dev
, struct agp_memory
*mem
)
1218 struct agp_i810_softc
*sc
;
1220 if (mem
->am_is_bound
)
1223 sc
= device_get_softc(dev
);
1225 if (mem
->am_type
== 2) {
1226 if (mem
->am_size
== AGP_PAGE_SIZE
) {
1228 * Unwire the page which we wired in alloc_memory.
1232 vm_object_hold(mem
->am_obj
);
1233 m
= vm_page_lookup_busy_wait(mem
->am_obj
, 0,
1235 vm_object_drop(mem
->am_obj
);
1236 vm_page_unwire(m
, 0);
1239 contigfree(sc
->argb_cursor
, mem
->am_size
, M_DRM
);
1240 sc
->argb_cursor
= NULL
;
1244 sc
->agp
.as_allocated
-= mem
->am_size
;
1245 TAILQ_REMOVE(&sc
->agp
.as_memory
, mem
, am_link
);
1247 vm_object_deallocate(mem
->am_obj
);
1253 agp_i810_bind_memory(device_t dev
, struct agp_memory
*mem
, vm_offset_t offset
)
1255 struct agp_i810_softc
*sc
;
1258 /* Do some sanity checks first. */
1259 if ((offset
& (AGP_PAGE_SIZE
- 1)) != 0 ||
1260 offset
+ mem
->am_size
> AGP_GET_APERTURE(dev
)) {
1261 device_printf(dev
, "binding memory at bad offset %#x\n",
1266 sc
= device_get_softc(dev
);
1267 if (mem
->am_type
== 2 && mem
->am_size
!= AGP_PAGE_SIZE
) {
1268 lockmgr(&sc
->agp
.as_lock
, LK_EXCLUSIVE
);
1269 if (mem
->am_is_bound
) {
1270 lockmgr(&sc
->agp
.as_lock
, LK_RELEASE
);
1273 /* The memory's already wired down, just stick it in the GTT. */
1274 for (i
= 0; i
< mem
->am_size
; i
+= AGP_PAGE_SIZE
) {
1275 sc
->match
->driver
->install_gtt_pte(dev
, (offset
+ i
) >>
1276 AGP_PAGE_SHIFT
, mem
->am_physical
+ i
, 0);
1279 mem
->am_offset
= offset
;
1280 mem
->am_is_bound
= 1;
1281 lockmgr(&sc
->agp
.as_lock
, LK_RELEASE
);
1285 if (mem
->am_type
!= 1)
1286 return (agp_generic_bind_memory(dev
, mem
, offset
));
1289 * Mapping local DRAM into GATT.
1291 if (sc
->match
->driver
->chiptype
!= CHIP_I810
)
1293 for (i
= 0; i
< mem
->am_size
; i
+= AGP_PAGE_SIZE
)
1294 bus_write_4(sc
->sc_res
[0],
1295 AGP_I810_GTT
+ (i
>> AGP_PAGE_SHIFT
) * 4, i
| 3);
1301 agp_i810_unbind_memory(device_t dev
, struct agp_memory
*mem
)
1303 struct agp_i810_softc
*sc
;
1306 sc
= device_get_softc(dev
);
1308 if (mem
->am_type
== 2 && mem
->am_size
!= AGP_PAGE_SIZE
) {
1309 lockmgr(&sc
->agp
.as_lock
, LK_EXCLUSIVE
);
1310 if (!mem
->am_is_bound
) {
1311 lockmgr(&sc
->agp
.as_lock
, LK_RELEASE
);
1315 for (i
= 0; i
< mem
->am_size
; i
+= AGP_PAGE_SIZE
) {
1316 sc
->match
->driver
->install_gtt_pte(dev
,
1317 (mem
->am_offset
+ i
) >> AGP_PAGE_SHIFT
, 0, 0);
1320 mem
->am_is_bound
= 0;
1321 lockmgr(&sc
->agp
.as_lock
, LK_RELEASE
);
1325 if (mem
->am_type
!= 1)
1326 return (agp_generic_unbind_memory(dev
, mem
));
1328 if (sc
->match
->driver
->chiptype
!= CHIP_I810
)
1330 for (i
= 0; i
< mem
->am_size
; i
+= AGP_PAGE_SIZE
) {
1331 sc
->match
->driver
->install_gtt_pte(dev
, i
>> AGP_PAGE_SHIFT
,
1337 static device_method_t agp_i810_methods
[] = {
1338 /* Device interface */
1339 DEVMETHOD(device_identify
, agp_i810_identify
),
1340 DEVMETHOD(device_probe
, agp_i810_probe
),
1341 DEVMETHOD(device_attach
, agp_i810_attach
),
1342 DEVMETHOD(device_detach
, agp_i810_detach
),
1343 DEVMETHOD(device_suspend
, bus_generic_suspend
),
1344 DEVMETHOD(device_resume
, agp_i810_resume
),
1347 DEVMETHOD(agp_get_aperture
, agp_generic_get_aperture
),
1348 DEVMETHOD(agp_set_aperture
, agp_i810_method_set_aperture
),
1349 DEVMETHOD(agp_bind_page
, agp_i810_bind_page
),
1350 DEVMETHOD(agp_unbind_page
, agp_i810_unbind_page
),
1351 DEVMETHOD(agp_flush_tlb
, agp_i810_flush_tlb
),
1352 DEVMETHOD(agp_enable
, agp_i810_enable
),
1353 DEVMETHOD(agp_alloc_memory
, agp_i810_alloc_memory
),
1354 DEVMETHOD(agp_free_memory
, agp_i810_free_memory
),
1355 DEVMETHOD(agp_bind_memory
, agp_i810_bind_memory
),
1356 DEVMETHOD(agp_unbind_memory
, agp_i810_unbind_memory
),
1357 DEVMETHOD(agp_chipset_flush
, agp_intel_gtt_chipset_flush
),
1362 static driver_t agp_i810_driver
= {
1365 sizeof(struct agp_i810_softc
),
1368 static devclass_t agp_devclass
;
1370 DRIVER_MODULE(agp_i810
, vgapci
, agp_i810_driver
, agp_devclass
, NULL
, NULL
);
1371 MODULE_DEPEND(agp_i810
, agp
, 1, 1, 1);
1372 MODULE_DEPEND(agp_i810
, pci
, 1, 1, 1);
1374 extern vm_page_t bogus_page
;
1377 agp_intel_gtt_clear_range(device_t dev
, u_int first_entry
, u_int num_entries
)
1379 struct agp_i810_softc
*sc
;
1382 sc
= device_get_softc(dev
);
1383 for (i
= 0; i
< num_entries
; i
++)
1384 sc
->match
->driver
->install_gtt_pte(dev
, first_entry
+ i
,
1385 VM_PAGE_TO_PHYS(bogus_page
), 0);
1386 sc
->match
->driver
->sync_gtt_pte(dev
, first_entry
+ num_entries
- 1);
1390 agp_intel_gtt_insert_pages(device_t dev
, u_int first_entry
, u_int num_entries
,
1391 vm_page_t
*pages
, u_int flags
)
1393 struct agp_i810_softc
*sc
;
1396 sc
= device_get_softc(dev
);
1397 for (i
= 0; i
< num_entries
; i
++) {
1398 KKASSERT(pages
[i
]->valid
== VM_PAGE_BITS_ALL
);
1399 KKASSERT(pages
[i
]->wire_count
> 0);
1400 sc
->match
->driver
->install_gtt_pte(dev
, first_entry
+ i
,
1401 VM_PAGE_TO_PHYS(pages
[i
]), flags
);
1403 sc
->match
->driver
->sync_gtt_pte(dev
, first_entry
+ num_entries
- 1);
1407 intel_gtt_insert_page(dma_addr_t addr
, unsigned int pg
, unsigned int flags
)
1409 struct agp_i810_softc
*sc
= device_get_softc(intel_agp
);
1411 sc
->match
->driver
->install_gtt_pte(intel_agp
, addr
, pg
, flags
);
1415 intel_gtt_insert_sg_entries(struct sg_table
*st
,
1416 unsigned int pg_start
,
1419 struct agp_i810_softc
*sc
= device_get_softc(intel_agp
);
1420 struct scatterlist
*sg
;
1422 int i
, j
, npages
, subpage
;
1425 for_each_sg(st
->sgl
, sg
, st
->nents
, j
) {
1426 npages
= sg_dma_len(sg
) / PAGE_SIZE
;
1427 for (subpage
= 0; subpage
< npages
; subpage
++) {
1428 page
= sg_dma_address(sg
) + subpage
* PAGE_SIZE
;
1429 sc
->match
->driver
->install_gtt_pte(intel_agp
,
1430 pg_start
+ i
, page
, flags
);
1434 sc
->match
->driver
->sync_gtt_pte(intel_agp
, pg_start
+ i
- 1);
1439 agp_intel_gtt_get(device_t dev
)
1441 struct agp_i810_softc
*sc
;
1442 struct intel_gtt res
;
1444 sc
= device_get_softc(dev
);
1445 res
.stolen_size
= sc
->stolen_size
;
1446 res
.gtt_total_entries
= sc
->gtt_total_entries
;
1447 res
.gtt_mappable_entries
= sc
->gtt_mappable_entries
;
1448 res
.do_idle_maps
= 0;
1449 res
.scratch_page_dma
= VM_PAGE_TO_PHYS(bogus_page
);
1454 agp_i915_chipset_flush_alloc_page(device_t dev
, uint64_t start
, uint64_t end
)
1456 struct agp_i810_softc
*sc
;
1459 sc
= device_get_softc(dev
);
1460 vga
= device_get_parent(dev
);
1461 sc
->sc_flush_page_rid
= 100;
1462 sc
->sc_flush_page_res
= BUS_ALLOC_RESOURCE(device_get_parent(vga
), dev
,
1463 SYS_RES_MEMORY
, &sc
->sc_flush_page_rid
, start
, end
, PAGE_SIZE
,
1465 if (sc
->sc_flush_page_res
== NULL
) {
1466 device_printf(dev
, "Failed to allocate flush page at 0x%jx\n",
1470 sc
->sc_flush_page_vaddr
= rman_get_virtual(sc
->sc_flush_page_res
);
1472 device_printf(dev
, "Allocated flush page phys 0x%jx virt %p\n",
1473 (uintmax_t)rman_get_start(sc
->sc_flush_page_res
),
1474 sc
->sc_flush_page_vaddr
);
1480 agp_i915_chipset_flush_free_page(device_t dev
)
1482 struct agp_i810_softc
*sc
;
1485 sc
= device_get_softc(dev
);
1486 vga
= device_get_parent(dev
);
1487 if (sc
->sc_flush_page_res
== NULL
)
1489 BUS_DEACTIVATE_RESOURCE(device_get_parent(vga
), dev
, SYS_RES_MEMORY
,
1490 sc
->sc_flush_page_rid
, sc
->sc_flush_page_res
);
1491 BUS_RELEASE_RESOURCE(device_get_parent(vga
), dev
, SYS_RES_MEMORY
,
1492 sc
->sc_flush_page_rid
, sc
->sc_flush_page_res
);
1496 agp_i915_chipset_flush_setup(device_t dev
)
1498 struct agp_i810_softc
*sc
;
1502 sc
= device_get_softc(dev
);
1503 temp
= pci_read_config(sc
->bdev
, AGP_I915_IFPADDR
, 4);
1504 if ((temp
& 1) != 0) {
1508 "Found already configured flush page at 0x%jx\n",
1510 sc
->sc_bios_allocated_flush_page
= 1;
1512 * In the case BIOS initialized the flush pointer (?)
1513 * register, expect that BIOS also set up the resource
1516 error
= agp_i915_chipset_flush_alloc_page(dev
, temp
,
1517 temp
+ PAGE_SIZE
- 1);
1521 sc
->sc_bios_allocated_flush_page
= 0;
1522 error
= agp_i915_chipset_flush_alloc_page(dev
, 0, 0xffffffff);
1525 temp
= rman_get_start(sc
->sc_flush_page_res
);
1526 pci_write_config(sc
->bdev
, AGP_I915_IFPADDR
, temp
| 1, 4);
1532 agp_i915_chipset_flush_teardown(device_t dev
)
1534 struct agp_i810_softc
*sc
;
1537 sc
= device_get_softc(dev
);
1538 if (sc
->sc_flush_page_res
== NULL
)
1540 if (!sc
->sc_bios_allocated_flush_page
) {
1541 temp
= pci_read_config(sc
->bdev
, AGP_I915_IFPADDR
, 4);
1543 pci_write_config(sc
->bdev
, AGP_I915_IFPADDR
, temp
, 4);
1545 agp_i915_chipset_flush_free_page(dev
);
1549 agp_i965_chipset_flush_setup(device_t dev
)
1551 struct agp_i810_softc
*sc
;
1553 uint32_t temp_hi
, temp_lo
;
1556 sc
= device_get_softc(dev
);
1558 temp_hi
= pci_read_config(sc
->bdev
, AGP_I965_IFPADDR
+ 4, 4);
1559 temp_lo
= pci_read_config(sc
->bdev
, AGP_I965_IFPADDR
, 4);
1561 if ((temp_lo
& 1) != 0) {
1562 temp
= ((uint64_t)temp_hi
<< 32) | (temp_lo
& ~1);
1565 "Found already configured flush page at 0x%jx\n",
1567 sc
->sc_bios_allocated_flush_page
= 1;
1569 * In the case BIOS initialized the flush pointer (?)
1570 * register, expect that BIOS also set up the resource
1573 error
= agp_i915_chipset_flush_alloc_page(dev
, temp
,
1574 temp
+ PAGE_SIZE
- 1);
1578 sc
->sc_bios_allocated_flush_page
= 0;
1579 error
= agp_i915_chipset_flush_alloc_page(dev
, 0, ~0);
1582 temp
= rman_get_start(sc
->sc_flush_page_res
);
1583 pci_write_config(sc
->bdev
, AGP_I965_IFPADDR
+ 4,
1584 (temp
>> 32) & UINT32_MAX
, 4);
1585 pci_write_config(sc
->bdev
, AGP_I965_IFPADDR
,
1586 (temp
& UINT32_MAX
) | 1, 4);
1592 agp_i965_chipset_flush_teardown(device_t dev
)
1594 struct agp_i810_softc
*sc
;
1597 sc
= device_get_softc(dev
);
1598 if (sc
->sc_flush_page_res
== NULL
)
1600 if (!sc
->sc_bios_allocated_flush_page
) {
1601 temp_lo
= pci_read_config(sc
->bdev
, AGP_I965_IFPADDR
, 4);
1603 pci_write_config(sc
->bdev
, AGP_I965_IFPADDR
, temp_lo
, 4);
1605 agp_i915_chipset_flush_free_page(dev
);
1609 agp_i915_chipset_flush(device_t dev
)
1611 struct agp_i810_softc
*sc
;
1613 sc
= device_get_softc(dev
);
1614 *(uint32_t *)sc
->sc_flush_page_vaddr
= 1;
1618 agp_intel_gtt_chipset_flush(device_t dev
)
1620 struct agp_i810_softc
*sc
;
1622 sc
= device_get_softc(dev
);
1623 sc
->match
->driver
->chipset_flush(dev
);
1628 intel_gtt_clear_range(u_int first_entry
, u_int num_entries
)
1631 agp_intel_gtt_clear_range(intel_agp
, first_entry
, num_entries
);
1634 void intel_gtt_get(u64
*gtt_total
,
1636 phys_addr_t
*mappable_base
,
1639 struct agp_info ainfo
;
1641 intel_private
.base
= agp_intel_gtt_get(intel_agp
);
1643 *gtt_total
= intel_private
.base
.gtt_total_entries
<< PAGE_SHIFT
;
1644 *stolen_size
= intel_private
.base
.stolen_size
;
1645 agp_get_info(intel_agp
, &ainfo
);
1646 *mappable_base
= ainfo
.ai_aperture_base
;
1647 *mappable_end
= intel_private
.base
.gtt_mappable_entries
<< PAGE_SHIFT
;
1651 intel_gtt_chipset_flush(void)
1654 return (agp_intel_gtt_chipset_flush(intel_agp
));
1661 intel_gtt_sync_pte(u_int entry
)
1663 struct agp_i810_softc
*sc
;
1665 sc
= device_get_softc(intel_agp
);
1666 sc
->match
->driver
->sync_gtt_pte(intel_agp
, entry
);
1673 intel_gtt_write(u_int entry
, uint32_t val
)
1675 struct agp_i810_softc
*sc
;
1677 sc
= device_get_softc(intel_agp
);
1678 sc
->match
->driver
->write_gtt(intel_agp
, entry
, val
);
1681 #define GFX_FLSH_CNTL 0x2170
1684 intel_enable_gtt(void)
1686 struct agp_i810_softc
*sc
= device_get_softc(intel_agp
);
1688 /* Some chipsets such as Pineview can't report if the GTT
1689 * has been enabled or not.
1690 * Assume everything is fine. */
1692 /* Flush all chipset write buffers nevertheless */
1693 bus_write_4(sc
->sc_res
[0], GFX_FLSH_CNTL
, 1);
1694 bus_write_4(sc
->sc_res
[0], GFX_FLSH_CNTL
, 0);