xref: /openbmc/linux/drivers/gpu/drm/i915/i915_pci.c (revision 52cdded0)
1 /*
2  * Copyright © 2016 Intel Corporation
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21  * IN THE SOFTWARE.
22  *
23  */
24 
25 #include <linux/console.h>
26 #include <linux/vga_switcheroo.h>
27 
28 #include <drm/drm_drv.h>
29 #include <drm/i915_pciids.h>
30 
31 #include "display/intel_fbdev.h"
32 
33 #include "i915_drv.h"
34 #include "i915_perf.h"
35 #include "i915_globals.h"
36 #include "i915_selftest.h"
37 
38 #define PLATFORM(x) .platform = (x)
39 #define GEN(x) .gen = (x), .gen_mask = BIT((x) - 1)
40 
41 #define I845_PIPE_OFFSETS \
42 	.pipe_offsets = { \
43 		[TRANSCODER_A] = PIPE_A_OFFSET,	\
44 	}, \
45 	.trans_offsets = { \
46 		[TRANSCODER_A] = TRANSCODER_A_OFFSET, \
47 	}
48 
49 #define I9XX_PIPE_OFFSETS \
50 	.pipe_offsets = { \
51 		[TRANSCODER_A] = PIPE_A_OFFSET,	\
52 		[TRANSCODER_B] = PIPE_B_OFFSET, \
53 	}, \
54 	.trans_offsets = { \
55 		[TRANSCODER_A] = TRANSCODER_A_OFFSET, \
56 		[TRANSCODER_B] = TRANSCODER_B_OFFSET, \
57 	}
58 
59 #define IVB_PIPE_OFFSETS \
60 	.pipe_offsets = { \
61 		[TRANSCODER_A] = PIPE_A_OFFSET,	\
62 		[TRANSCODER_B] = PIPE_B_OFFSET, \
63 		[TRANSCODER_C] = PIPE_C_OFFSET, \
64 	}, \
65 	.trans_offsets = { \
66 		[TRANSCODER_A] = TRANSCODER_A_OFFSET, \
67 		[TRANSCODER_B] = TRANSCODER_B_OFFSET, \
68 		[TRANSCODER_C] = TRANSCODER_C_OFFSET, \
69 	}
70 
71 #define HSW_PIPE_OFFSETS \
72 	.pipe_offsets = { \
73 		[TRANSCODER_A] = PIPE_A_OFFSET,	\
74 		[TRANSCODER_B] = PIPE_B_OFFSET, \
75 		[TRANSCODER_C] = PIPE_C_OFFSET, \
76 		[TRANSCODER_EDP] = PIPE_EDP_OFFSET, \
77 	}, \
78 	.trans_offsets = { \
79 		[TRANSCODER_A] = TRANSCODER_A_OFFSET, \
80 		[TRANSCODER_B] = TRANSCODER_B_OFFSET, \
81 		[TRANSCODER_C] = TRANSCODER_C_OFFSET, \
82 		[TRANSCODER_EDP] = TRANSCODER_EDP_OFFSET, \
83 	}
84 
85 #define CHV_PIPE_OFFSETS \
86 	.pipe_offsets = { \
87 		[TRANSCODER_A] = PIPE_A_OFFSET, \
88 		[TRANSCODER_B] = PIPE_B_OFFSET, \
89 		[TRANSCODER_C] = CHV_PIPE_C_OFFSET, \
90 	}, \
91 	.trans_offsets = { \
92 		[TRANSCODER_A] = TRANSCODER_A_OFFSET, \
93 		[TRANSCODER_B] = TRANSCODER_B_OFFSET, \
94 		[TRANSCODER_C] = CHV_TRANSCODER_C_OFFSET, \
95 	}
96 
97 #define I845_CURSOR_OFFSETS \
98 	.cursor_offsets = { \
99 		[PIPE_A] = CURSOR_A_OFFSET, \
100 	}
101 
102 #define I9XX_CURSOR_OFFSETS \
103 	.cursor_offsets = { \
104 		[PIPE_A] = CURSOR_A_OFFSET, \
105 		[PIPE_B] = CURSOR_B_OFFSET, \
106 	}
107 
108 #define CHV_CURSOR_OFFSETS \
109 	.cursor_offsets = { \
110 		[PIPE_A] = CURSOR_A_OFFSET, \
111 		[PIPE_B] = CURSOR_B_OFFSET, \
112 		[PIPE_C] = CHV_CURSOR_C_OFFSET, \
113 	}
114 
115 #define IVB_CURSOR_OFFSETS \
116 	.cursor_offsets = { \
117 		[PIPE_A] = CURSOR_A_OFFSET, \
118 		[PIPE_B] = IVB_CURSOR_B_OFFSET, \
119 		[PIPE_C] = IVB_CURSOR_C_OFFSET, \
120 	}
121 
122 #define TGL_CURSOR_OFFSETS \
123 	.cursor_offsets = { \
124 		[PIPE_A] = CURSOR_A_OFFSET, \
125 		[PIPE_B] = IVB_CURSOR_B_OFFSET, \
126 		[PIPE_C] = IVB_CURSOR_C_OFFSET, \
127 		[PIPE_D] = TGL_CURSOR_D_OFFSET, \
128 	}
129 
130 #define I9XX_COLORS \
131 	.color = { .gamma_lut_size = 256 }
132 #define I965_COLORS \
133 	.color = { .gamma_lut_size = 129, \
134 		   .gamma_lut_tests = DRM_COLOR_LUT_NON_DECREASING, \
135 	}
136 #define ILK_COLORS \
137 	.color = { .gamma_lut_size = 1024 }
138 #define IVB_COLORS \
139 	.color = { .degamma_lut_size = 1024, .gamma_lut_size = 1024 }
140 #define CHV_COLORS \
141 	.color = { .degamma_lut_size = 65, .gamma_lut_size = 257, \
142 		   .degamma_lut_tests = DRM_COLOR_LUT_NON_DECREASING, \
143 		   .gamma_lut_tests = DRM_COLOR_LUT_NON_DECREASING, \
144 	}
145 #define GLK_COLORS \
146 	.color = { .degamma_lut_size = 33, .gamma_lut_size = 1024, \
147 		   .degamma_lut_tests = DRM_COLOR_LUT_NON_DECREASING | \
148 					DRM_COLOR_LUT_EQUAL_CHANNELS, \
149 	}
150 
151 /* Keep in gen based order, and chronological order within a gen */
152 
153 #define GEN_DEFAULT_PAGE_SIZES \
154 	.page_sizes = I915_GTT_PAGE_SIZE_4K
155 
156 #define GEN_DEFAULT_REGIONS \
157 	.memory_regions = REGION_SMEM | REGION_STOLEN
158 
159 #define I830_FEATURES \
160 	GEN(2), \
161 	.is_mobile = 1, \
162 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B), \
163 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B), \
164 	.display.has_overlay = 1, \
165 	.display.cursor_needs_physical = 1, \
166 	.display.overlay_needs_physical = 1, \
167 	.display.has_gmch = 1, \
168 	.gpu_reset_clobbers_display = true, \
169 	.hws_needs_physical = 1, \
170 	.unfenced_needs_alignment = 1, \
171 	.platform_engine_mask = BIT(RCS0), \
172 	.has_snoop = true, \
173 	.has_coherent_ggtt = false, \
174 	.dma_mask_size = 32, \
175 	I9XX_PIPE_OFFSETS, \
176 	I9XX_CURSOR_OFFSETS, \
177 	I9XX_COLORS, \
178 	GEN_DEFAULT_PAGE_SIZES, \
179 	GEN_DEFAULT_REGIONS
180 
181 #define I845_FEATURES \
182 	GEN(2), \
183 	.pipe_mask = BIT(PIPE_A), \
184 	.cpu_transcoder_mask = BIT(TRANSCODER_A), \
185 	.display.has_overlay = 1, \
186 	.display.overlay_needs_physical = 1, \
187 	.display.has_gmch = 1, \
188 	.gpu_reset_clobbers_display = true, \
189 	.hws_needs_physical = 1, \
190 	.unfenced_needs_alignment = 1, \
191 	.platform_engine_mask = BIT(RCS0), \
192 	.has_snoop = true, \
193 	.has_coherent_ggtt = false, \
194 	.dma_mask_size = 32, \
195 	I845_PIPE_OFFSETS, \
196 	I845_CURSOR_OFFSETS, \
197 	I9XX_COLORS, \
198 	GEN_DEFAULT_PAGE_SIZES, \
199 	GEN_DEFAULT_REGIONS
200 
201 static const struct intel_device_info i830_info = {
202 	I830_FEATURES,
203 	PLATFORM(INTEL_I830),
204 };
205 
206 static const struct intel_device_info i845g_info = {
207 	I845_FEATURES,
208 	PLATFORM(INTEL_I845G),
209 };
210 
211 static const struct intel_device_info i85x_info = {
212 	I830_FEATURES,
213 	PLATFORM(INTEL_I85X),
214 	.display.has_fbc = 1,
215 };
216 
217 static const struct intel_device_info i865g_info = {
218 	I845_FEATURES,
219 	PLATFORM(INTEL_I865G),
220 	.display.has_fbc = 1,
221 };
222 
223 #define GEN3_FEATURES \
224 	GEN(3), \
225 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B), \
226 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B), \
227 	.display.has_gmch = 1, \
228 	.gpu_reset_clobbers_display = true, \
229 	.platform_engine_mask = BIT(RCS0), \
230 	.has_snoop = true, \
231 	.has_coherent_ggtt = true, \
232 	.dma_mask_size = 32, \
233 	I9XX_PIPE_OFFSETS, \
234 	I9XX_CURSOR_OFFSETS, \
235 	I9XX_COLORS, \
236 	GEN_DEFAULT_PAGE_SIZES, \
237 	GEN_DEFAULT_REGIONS
238 
239 static const struct intel_device_info i915g_info = {
240 	GEN3_FEATURES,
241 	PLATFORM(INTEL_I915G),
242 	.has_coherent_ggtt = false,
243 	.display.cursor_needs_physical = 1,
244 	.display.has_overlay = 1,
245 	.display.overlay_needs_physical = 1,
246 	.hws_needs_physical = 1,
247 	.unfenced_needs_alignment = 1,
248 };
249 
250 static const struct intel_device_info i915gm_info = {
251 	GEN3_FEATURES,
252 	PLATFORM(INTEL_I915GM),
253 	.is_mobile = 1,
254 	.display.cursor_needs_physical = 1,
255 	.display.has_overlay = 1,
256 	.display.overlay_needs_physical = 1,
257 	.display.supports_tv = 1,
258 	.display.has_fbc = 1,
259 	.hws_needs_physical = 1,
260 	.unfenced_needs_alignment = 1,
261 };
262 
263 static const struct intel_device_info i945g_info = {
264 	GEN3_FEATURES,
265 	PLATFORM(INTEL_I945G),
266 	.display.has_hotplug = 1,
267 	.display.cursor_needs_physical = 1,
268 	.display.has_overlay = 1,
269 	.display.overlay_needs_physical = 1,
270 	.hws_needs_physical = 1,
271 	.unfenced_needs_alignment = 1,
272 };
273 
274 static const struct intel_device_info i945gm_info = {
275 	GEN3_FEATURES,
276 	PLATFORM(INTEL_I945GM),
277 	.is_mobile = 1,
278 	.display.has_hotplug = 1,
279 	.display.cursor_needs_physical = 1,
280 	.display.has_overlay = 1,
281 	.display.overlay_needs_physical = 1,
282 	.display.supports_tv = 1,
283 	.display.has_fbc = 1,
284 	.hws_needs_physical = 1,
285 	.unfenced_needs_alignment = 1,
286 };
287 
288 static const struct intel_device_info g33_info = {
289 	GEN3_FEATURES,
290 	PLATFORM(INTEL_G33),
291 	.display.has_hotplug = 1,
292 	.display.has_overlay = 1,
293 	.dma_mask_size = 36,
294 };
295 
296 static const struct intel_device_info pnv_g_info = {
297 	GEN3_FEATURES,
298 	PLATFORM(INTEL_PINEVIEW),
299 	.display.has_hotplug = 1,
300 	.display.has_overlay = 1,
301 	.dma_mask_size = 36,
302 };
303 
304 static const struct intel_device_info pnv_m_info = {
305 	GEN3_FEATURES,
306 	PLATFORM(INTEL_PINEVIEW),
307 	.is_mobile = 1,
308 	.display.has_hotplug = 1,
309 	.display.has_overlay = 1,
310 	.dma_mask_size = 36,
311 };
312 
313 #define GEN4_FEATURES \
314 	GEN(4), \
315 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B), \
316 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B), \
317 	.display.has_hotplug = 1, \
318 	.display.has_gmch = 1, \
319 	.gpu_reset_clobbers_display = true, \
320 	.platform_engine_mask = BIT(RCS0), \
321 	.has_snoop = true, \
322 	.has_coherent_ggtt = true, \
323 	.dma_mask_size = 36, \
324 	I9XX_PIPE_OFFSETS, \
325 	I9XX_CURSOR_OFFSETS, \
326 	I965_COLORS, \
327 	GEN_DEFAULT_PAGE_SIZES, \
328 	GEN_DEFAULT_REGIONS
329 
330 static const struct intel_device_info i965g_info = {
331 	GEN4_FEATURES,
332 	PLATFORM(INTEL_I965G),
333 	.display.has_overlay = 1,
334 	.hws_needs_physical = 1,
335 	.has_snoop = false,
336 };
337 
338 static const struct intel_device_info i965gm_info = {
339 	GEN4_FEATURES,
340 	PLATFORM(INTEL_I965GM),
341 	.is_mobile = 1,
342 	.display.has_fbc = 1,
343 	.display.has_overlay = 1,
344 	.display.supports_tv = 1,
345 	.hws_needs_physical = 1,
346 	.has_snoop = false,
347 };
348 
349 static const struct intel_device_info g45_info = {
350 	GEN4_FEATURES,
351 	PLATFORM(INTEL_G45),
352 	.platform_engine_mask = BIT(RCS0) | BIT(VCS0),
353 	.gpu_reset_clobbers_display = false,
354 };
355 
356 static const struct intel_device_info gm45_info = {
357 	GEN4_FEATURES,
358 	PLATFORM(INTEL_GM45),
359 	.is_mobile = 1,
360 	.display.has_fbc = 1,
361 	.display.supports_tv = 1,
362 	.platform_engine_mask = BIT(RCS0) | BIT(VCS0),
363 	.gpu_reset_clobbers_display = false,
364 };
365 
366 #define GEN5_FEATURES \
367 	GEN(5), \
368 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B), \
369 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B), \
370 	.display.has_hotplug = 1, \
371 	.platform_engine_mask = BIT(RCS0) | BIT(VCS0), \
372 	.has_snoop = true, \
373 	.has_coherent_ggtt = true, \
374 	/* ilk does support rc6, but we do not implement [power] contexts */ \
375 	.has_rc6 = 0, \
376 	.dma_mask_size = 36, \
377 	I9XX_PIPE_OFFSETS, \
378 	I9XX_CURSOR_OFFSETS, \
379 	ILK_COLORS, \
380 	GEN_DEFAULT_PAGE_SIZES, \
381 	GEN_DEFAULT_REGIONS
382 
383 static const struct intel_device_info ilk_d_info = {
384 	GEN5_FEATURES,
385 	PLATFORM(INTEL_IRONLAKE),
386 };
387 
388 static const struct intel_device_info ilk_m_info = {
389 	GEN5_FEATURES,
390 	PLATFORM(INTEL_IRONLAKE),
391 	.is_mobile = 1,
392 	.display.has_fbc = 1,
393 };
394 
395 #define GEN6_FEATURES \
396 	GEN(6), \
397 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B), \
398 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B), \
399 	.display.has_hotplug = 1, \
400 	.display.has_fbc = 1, \
401 	.platform_engine_mask = BIT(RCS0) | BIT(VCS0) | BIT(BCS0), \
402 	.has_coherent_ggtt = true, \
403 	.has_llc = 1, \
404 	.has_rc6 = 1, \
405 	.has_rc6p = 1, \
406 	.has_rps = true, \
407 	.dma_mask_size = 40, \
408 	.ppgtt_type = INTEL_PPGTT_ALIASING, \
409 	.ppgtt_size = 31, \
410 	I9XX_PIPE_OFFSETS, \
411 	I9XX_CURSOR_OFFSETS, \
412 	ILK_COLORS, \
413 	GEN_DEFAULT_PAGE_SIZES, \
414 	GEN_DEFAULT_REGIONS
415 
416 #define SNB_D_PLATFORM \
417 	GEN6_FEATURES, \
418 	PLATFORM(INTEL_SANDYBRIDGE)
419 
420 static const struct intel_device_info snb_d_gt1_info = {
421 	SNB_D_PLATFORM,
422 	.gt = 1,
423 };
424 
425 static const struct intel_device_info snb_d_gt2_info = {
426 	SNB_D_PLATFORM,
427 	.gt = 2,
428 };
429 
430 #define SNB_M_PLATFORM \
431 	GEN6_FEATURES, \
432 	PLATFORM(INTEL_SANDYBRIDGE), \
433 	.is_mobile = 1
434 
435 
436 static const struct intel_device_info snb_m_gt1_info = {
437 	SNB_M_PLATFORM,
438 	.gt = 1,
439 };
440 
441 static const struct intel_device_info snb_m_gt2_info = {
442 	SNB_M_PLATFORM,
443 	.gt = 2,
444 };
445 
446 #define GEN7_FEATURES  \
447 	GEN(7), \
448 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C), \
449 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) | BIT(TRANSCODER_C), \
450 	.display.has_hotplug = 1, \
451 	.display.has_fbc = 1, \
452 	.platform_engine_mask = BIT(RCS0) | BIT(VCS0) | BIT(BCS0), \
453 	.has_coherent_ggtt = true, \
454 	.has_llc = 1, \
455 	.has_rc6 = 1, \
456 	.has_rc6p = 1, \
457 	.has_rps = true, \
458 	.dma_mask_size = 40, \
459 	.ppgtt_type = INTEL_PPGTT_ALIASING, \
460 	.ppgtt_size = 31, \
461 	IVB_PIPE_OFFSETS, \
462 	IVB_CURSOR_OFFSETS, \
463 	IVB_COLORS, \
464 	GEN_DEFAULT_PAGE_SIZES, \
465 	GEN_DEFAULT_REGIONS
466 
467 #define IVB_D_PLATFORM \
468 	GEN7_FEATURES, \
469 	PLATFORM(INTEL_IVYBRIDGE), \
470 	.has_l3_dpf = 1
471 
472 static const struct intel_device_info ivb_d_gt1_info = {
473 	IVB_D_PLATFORM,
474 	.gt = 1,
475 };
476 
477 static const struct intel_device_info ivb_d_gt2_info = {
478 	IVB_D_PLATFORM,
479 	.gt = 2,
480 };
481 
482 #define IVB_M_PLATFORM \
483 	GEN7_FEATURES, \
484 	PLATFORM(INTEL_IVYBRIDGE), \
485 	.is_mobile = 1, \
486 	.has_l3_dpf = 1
487 
488 static const struct intel_device_info ivb_m_gt1_info = {
489 	IVB_M_PLATFORM,
490 	.gt = 1,
491 };
492 
493 static const struct intel_device_info ivb_m_gt2_info = {
494 	IVB_M_PLATFORM,
495 	.gt = 2,
496 };
497 
498 static const struct intel_device_info ivb_q_info = {
499 	GEN7_FEATURES,
500 	PLATFORM(INTEL_IVYBRIDGE),
501 	.gt = 2,
502 	.pipe_mask = 0, /* legal, last one wins */
503 	.cpu_transcoder_mask = 0,
504 	.has_l3_dpf = 1,
505 };
506 
507 static const struct intel_device_info vlv_info = {
508 	PLATFORM(INTEL_VALLEYVIEW),
509 	GEN(7),
510 	.is_lp = 1,
511 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B),
512 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B),
513 	.has_runtime_pm = 1,
514 	.has_rc6 = 1,
515 	.has_rps = true,
516 	.display.has_gmch = 1,
517 	.display.has_hotplug = 1,
518 	.dma_mask_size = 40,
519 	.ppgtt_type = INTEL_PPGTT_ALIASING,
520 	.ppgtt_size = 31,
521 	.has_snoop = true,
522 	.has_coherent_ggtt = false,
523 	.platform_engine_mask = BIT(RCS0) | BIT(VCS0) | BIT(BCS0),
524 	.display_mmio_offset = VLV_DISPLAY_BASE,
525 	I9XX_PIPE_OFFSETS,
526 	I9XX_CURSOR_OFFSETS,
527 	I965_COLORS,
528 	GEN_DEFAULT_PAGE_SIZES,
529 	GEN_DEFAULT_REGIONS,
530 };
531 
532 #define G75_FEATURES  \
533 	GEN7_FEATURES, \
534 	.platform_engine_mask = BIT(RCS0) | BIT(VCS0) | BIT(BCS0) | BIT(VECS0), \
535 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) | \
536 		BIT(TRANSCODER_C) | BIT(TRANSCODER_EDP), \
537 	.display.has_ddi = 1, \
538 	.has_fpga_dbg = 1, \
539 	.display.has_psr = 1, \
540 	.display.has_psr_hw_tracking = 1, \
541 	.display.has_dp_mst = 1, \
542 	.has_rc6p = 0 /* RC6p removed-by HSW */, \
543 	HSW_PIPE_OFFSETS, \
544 	.has_runtime_pm = 1
545 
546 #define HSW_PLATFORM \
547 	G75_FEATURES, \
548 	PLATFORM(INTEL_HASWELL), \
549 	.has_l3_dpf = 1
550 
551 static const struct intel_device_info hsw_gt1_info = {
552 	HSW_PLATFORM,
553 	.gt = 1,
554 };
555 
556 static const struct intel_device_info hsw_gt2_info = {
557 	HSW_PLATFORM,
558 	.gt = 2,
559 };
560 
561 static const struct intel_device_info hsw_gt3_info = {
562 	HSW_PLATFORM,
563 	.gt = 3,
564 };
565 
566 #define GEN8_FEATURES \
567 	G75_FEATURES, \
568 	GEN(8), \
569 	.has_logical_ring_contexts = 1, \
570 	.dma_mask_size = 39, \
571 	.ppgtt_type = INTEL_PPGTT_FULL, \
572 	.ppgtt_size = 48, \
573 	.has_64bit_reloc = 1, \
574 	.has_reset_engine = 1
575 
576 #define BDW_PLATFORM \
577 	GEN8_FEATURES, \
578 	PLATFORM(INTEL_BROADWELL)
579 
580 static const struct intel_device_info bdw_gt1_info = {
581 	BDW_PLATFORM,
582 	.gt = 1,
583 };
584 
585 static const struct intel_device_info bdw_gt2_info = {
586 	BDW_PLATFORM,
587 	.gt = 2,
588 };
589 
590 static const struct intel_device_info bdw_rsvd_info = {
591 	BDW_PLATFORM,
592 	.gt = 3,
593 	/* According to the device ID those devices are GT3, they were
594 	 * previously treated as not GT3, keep it like that.
595 	 */
596 };
597 
598 static const struct intel_device_info bdw_gt3_info = {
599 	BDW_PLATFORM,
600 	.gt = 3,
601 	.platform_engine_mask =
602 		BIT(RCS0) | BIT(VCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS1),
603 };
604 
605 static const struct intel_device_info chv_info = {
606 	PLATFORM(INTEL_CHERRYVIEW),
607 	GEN(8),
608 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
609 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) | BIT(TRANSCODER_C),
610 	.display.has_hotplug = 1,
611 	.is_lp = 1,
612 	.platform_engine_mask = BIT(RCS0) | BIT(VCS0) | BIT(BCS0) | BIT(VECS0),
613 	.has_64bit_reloc = 1,
614 	.has_runtime_pm = 1,
615 	.has_rc6 = 1,
616 	.has_rps = true,
617 	.has_logical_ring_contexts = 1,
618 	.display.has_gmch = 1,
619 	.dma_mask_size = 39,
620 	.ppgtt_type = INTEL_PPGTT_FULL,
621 	.ppgtt_size = 32,
622 	.has_reset_engine = 1,
623 	.has_snoop = true,
624 	.has_coherent_ggtt = false,
625 	.display_mmio_offset = VLV_DISPLAY_BASE,
626 	CHV_PIPE_OFFSETS,
627 	CHV_CURSOR_OFFSETS,
628 	CHV_COLORS,
629 	GEN_DEFAULT_PAGE_SIZES,
630 	GEN_DEFAULT_REGIONS,
631 };
632 
633 #define GEN9_DEFAULT_PAGE_SIZES \
634 	.page_sizes = I915_GTT_PAGE_SIZE_4K | \
635 		      I915_GTT_PAGE_SIZE_64K
636 
637 #define GEN9_FEATURES \
638 	GEN8_FEATURES, \
639 	GEN(9), \
640 	GEN9_DEFAULT_PAGE_SIZES, \
641 	.has_logical_ring_preemption = 1, \
642 	.display.has_csr = 1, \
643 	.has_gt_uc = 1, \
644 	.display.has_hdcp = 1, \
645 	.display.has_ipc = 1, \
646 	.ddb_size = 896, \
647 	.num_supported_dbuf_slices = 1
648 
649 #define SKL_PLATFORM \
650 	GEN9_FEATURES, \
651 	PLATFORM(INTEL_SKYLAKE)
652 
653 static const struct intel_device_info skl_gt1_info = {
654 	SKL_PLATFORM,
655 	.gt = 1,
656 };
657 
658 static const struct intel_device_info skl_gt2_info = {
659 	SKL_PLATFORM,
660 	.gt = 2,
661 };
662 
663 #define SKL_GT3_PLUS_PLATFORM \
664 	SKL_PLATFORM, \
665 	.platform_engine_mask = \
666 		BIT(RCS0) | BIT(VCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS1)
667 
668 
669 static const struct intel_device_info skl_gt3_info = {
670 	SKL_GT3_PLUS_PLATFORM,
671 	.gt = 3,
672 };
673 
674 static const struct intel_device_info skl_gt4_info = {
675 	SKL_GT3_PLUS_PLATFORM,
676 	.gt = 4,
677 };
678 
679 #define GEN9_LP_FEATURES \
680 	GEN(9), \
681 	.is_lp = 1, \
682 	.num_supported_dbuf_slices = 1, \
683 	.display.has_hotplug = 1, \
684 	.platform_engine_mask = BIT(RCS0) | BIT(VCS0) | BIT(BCS0) | BIT(VECS0), \
685 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C), \
686 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) | \
687 		BIT(TRANSCODER_C) | BIT(TRANSCODER_EDP) | \
688 		BIT(TRANSCODER_DSI_A) | BIT(TRANSCODER_DSI_C), \
689 	.has_64bit_reloc = 1, \
690 	.display.has_ddi = 1, \
691 	.has_fpga_dbg = 1, \
692 	.display.has_fbc = 1, \
693 	.display.has_hdcp = 1, \
694 	.display.has_psr = 1, \
695 	.display.has_psr_hw_tracking = 1, \
696 	.has_runtime_pm = 1, \
697 	.display.has_csr = 1, \
698 	.has_rc6 = 1, \
699 	.has_rps = true, \
700 	.display.has_dp_mst = 1, \
701 	.has_logical_ring_contexts = 1, \
702 	.has_logical_ring_preemption = 1, \
703 	.has_gt_uc = 1, \
704 	.dma_mask_size = 39, \
705 	.ppgtt_type = INTEL_PPGTT_FULL, \
706 	.ppgtt_size = 48, \
707 	.has_reset_engine = 1, \
708 	.has_snoop = true, \
709 	.has_coherent_ggtt = false, \
710 	.display.has_ipc = 1, \
711 	HSW_PIPE_OFFSETS, \
712 	IVB_CURSOR_OFFSETS, \
713 	IVB_COLORS, \
714 	GEN9_DEFAULT_PAGE_SIZES, \
715 	GEN_DEFAULT_REGIONS
716 
717 static const struct intel_device_info bxt_info = {
718 	GEN9_LP_FEATURES,
719 	PLATFORM(INTEL_BROXTON),
720 	.ddb_size = 512,
721 };
722 
723 static const struct intel_device_info glk_info = {
724 	GEN9_LP_FEATURES,
725 	PLATFORM(INTEL_GEMINILAKE),
726 	.ddb_size = 1024,
727 	GLK_COLORS,
728 };
729 
730 #define KBL_PLATFORM \
731 	GEN9_FEATURES, \
732 	PLATFORM(INTEL_KABYLAKE)
733 
734 static const struct intel_device_info kbl_gt1_info = {
735 	KBL_PLATFORM,
736 	.gt = 1,
737 };
738 
739 static const struct intel_device_info kbl_gt2_info = {
740 	KBL_PLATFORM,
741 	.gt = 2,
742 };
743 
744 static const struct intel_device_info kbl_gt3_info = {
745 	KBL_PLATFORM,
746 	.gt = 3,
747 	.platform_engine_mask =
748 		BIT(RCS0) | BIT(VCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS1),
749 };
750 
751 #define CFL_PLATFORM \
752 	GEN9_FEATURES, \
753 	PLATFORM(INTEL_COFFEELAKE)
754 
755 static const struct intel_device_info cfl_gt1_info = {
756 	CFL_PLATFORM,
757 	.gt = 1,
758 };
759 
760 static const struct intel_device_info cfl_gt2_info = {
761 	CFL_PLATFORM,
762 	.gt = 2,
763 };
764 
765 static const struct intel_device_info cfl_gt3_info = {
766 	CFL_PLATFORM,
767 	.gt = 3,
768 	.platform_engine_mask =
769 		BIT(RCS0) | BIT(VCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS1),
770 };
771 
772 #define CML_PLATFORM \
773 	GEN9_FEATURES, \
774 	PLATFORM(INTEL_COMETLAKE)
775 
776 static const struct intel_device_info cml_gt1_info = {
777 	CML_PLATFORM,
778 	.gt = 1,
779 };
780 
781 static const struct intel_device_info cml_gt2_info = {
782 	CML_PLATFORM,
783 	.gt = 2,
784 };
785 
786 #define GEN10_FEATURES \
787 	GEN9_FEATURES, \
788 	GEN(10), \
789 	.ddb_size = 1024, \
790 	.display.has_dsc = 1, \
791 	.has_coherent_ggtt = false, \
792 	GLK_COLORS
793 
794 static const struct intel_device_info cnl_info = {
795 	GEN10_FEATURES,
796 	PLATFORM(INTEL_CANNONLAKE),
797 	.gt = 2,
798 };
799 
800 #define GEN11_DEFAULT_PAGE_SIZES \
801 	.page_sizes = I915_GTT_PAGE_SIZE_4K | \
802 		      I915_GTT_PAGE_SIZE_64K | \
803 		      I915_GTT_PAGE_SIZE_2M
804 
805 #define GEN11_FEATURES \
806 	GEN10_FEATURES, \
807 	GEN11_DEFAULT_PAGE_SIZES, \
808 	.abox_mask = BIT(0), \
809 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) | \
810 		BIT(TRANSCODER_C) | BIT(TRANSCODER_EDP) | \
811 		BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1), \
812 	.pipe_offsets = { \
813 		[TRANSCODER_A] = PIPE_A_OFFSET, \
814 		[TRANSCODER_B] = PIPE_B_OFFSET, \
815 		[TRANSCODER_C] = PIPE_C_OFFSET, \
816 		[TRANSCODER_EDP] = PIPE_EDP_OFFSET, \
817 		[TRANSCODER_DSI_0] = PIPE_DSI0_OFFSET, \
818 		[TRANSCODER_DSI_1] = PIPE_DSI1_OFFSET, \
819 	}, \
820 	.trans_offsets = { \
821 		[TRANSCODER_A] = TRANSCODER_A_OFFSET, \
822 		[TRANSCODER_B] = TRANSCODER_B_OFFSET, \
823 		[TRANSCODER_C] = TRANSCODER_C_OFFSET, \
824 		[TRANSCODER_EDP] = TRANSCODER_EDP_OFFSET, \
825 		[TRANSCODER_DSI_0] = TRANSCODER_DSI0_OFFSET, \
826 		[TRANSCODER_DSI_1] = TRANSCODER_DSI1_OFFSET, \
827 	}, \
828 	GEN(11), \
829 	.ddb_size = 2048, \
830 	.num_supported_dbuf_slices = 2, \
831 	.has_logical_ring_elsq = 1, \
832 	.color = { .degamma_lut_size = 33, .gamma_lut_size = 262145 }
833 
834 static const struct intel_device_info icl_info = {
835 	GEN11_FEATURES,
836 	PLATFORM(INTEL_ICELAKE),
837 	.platform_engine_mask =
838 		BIT(RCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS0) | BIT(VCS2),
839 };
840 
841 static const struct intel_device_info ehl_info = {
842 	GEN11_FEATURES,
843 	PLATFORM(INTEL_ELKHARTLAKE),
844 	.require_force_probe = 1,
845 	.platform_engine_mask = BIT(RCS0) | BIT(BCS0) | BIT(VCS0) | BIT(VECS0),
846 	.ppgtt_size = 36,
847 };
848 
849 #define GEN12_FEATURES \
850 	GEN11_FEATURES, \
851 	GEN(12), \
852 	.abox_mask = GENMASK(2, 1), \
853 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D), \
854 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) | \
855 		BIT(TRANSCODER_C) | BIT(TRANSCODER_D) | \
856 		BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1), \
857 	.pipe_offsets = { \
858 		[TRANSCODER_A] = PIPE_A_OFFSET, \
859 		[TRANSCODER_B] = PIPE_B_OFFSET, \
860 		[TRANSCODER_C] = PIPE_C_OFFSET, \
861 		[TRANSCODER_D] = PIPE_D_OFFSET, \
862 		[TRANSCODER_DSI_0] = PIPE_DSI0_OFFSET, \
863 		[TRANSCODER_DSI_1] = PIPE_DSI1_OFFSET, \
864 	}, \
865 	.trans_offsets = { \
866 		[TRANSCODER_A] = TRANSCODER_A_OFFSET, \
867 		[TRANSCODER_B] = TRANSCODER_B_OFFSET, \
868 		[TRANSCODER_C] = TRANSCODER_C_OFFSET, \
869 		[TRANSCODER_D] = TRANSCODER_D_OFFSET, \
870 		[TRANSCODER_DSI_0] = TRANSCODER_DSI0_OFFSET, \
871 		[TRANSCODER_DSI_1] = TRANSCODER_DSI1_OFFSET, \
872 	}, \
873 	TGL_CURSOR_OFFSETS, \
874 	.has_global_mocs = 1, \
875 	.display.has_dsb = 1
876 
877 static const struct intel_device_info tgl_info = {
878 	GEN12_FEATURES,
879 	PLATFORM(INTEL_TIGERLAKE),
880 	.display.has_modular_fia = 1,
881 	.platform_engine_mask =
882 		BIT(RCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS0) | BIT(VCS2),
883 };
884 
885 static const struct intel_device_info rkl_info = {
886 	GEN12_FEATURES,
887 	PLATFORM(INTEL_ROCKETLAKE),
888 	.abox_mask = BIT(0),
889 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
890 	.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) |
891 		BIT(TRANSCODER_C),
892 	.require_force_probe = 1,
893 	.display.has_psr_hw_tracking = 0,
894 	.platform_engine_mask =
895 		BIT(RCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS0),
896 };
897 
898 #define GEN12_DGFX_FEATURES \
899 	GEN12_FEATURES, \
900 	.memory_regions = REGION_SMEM | REGION_LMEM, \
901 	.has_master_unit_irq = 1, \
902 	.is_dgfx = 1
903 
904 static const struct intel_device_info dg1_info __maybe_unused = {
905 	GEN12_DGFX_FEATURES,
906 	PLATFORM(INTEL_DG1),
907 	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
908 	.require_force_probe = 1,
909 	.platform_engine_mask =
910 		BIT(RCS0) | BIT(BCS0) | BIT(VECS0) |
911 		BIT(VCS0) | BIT(VCS2),
912 };
913 
914 #undef GEN
915 #undef PLATFORM
916 
917 /*
918  * Make sure any device matches here are from most specific to most
919  * general.  For example, since the Quanta match is based on the subsystem
920  * and subvendor IDs, we need it to come before the more general IVB
921  * PCI ID matches, otherwise we'll use the wrong info struct above.
922  */
923 static const struct pci_device_id pciidlist[] = {
924 	INTEL_I830_IDS(&i830_info),
925 	INTEL_I845G_IDS(&i845g_info),
926 	INTEL_I85X_IDS(&i85x_info),
927 	INTEL_I865G_IDS(&i865g_info),
928 	INTEL_I915G_IDS(&i915g_info),
929 	INTEL_I915GM_IDS(&i915gm_info),
930 	INTEL_I945G_IDS(&i945g_info),
931 	INTEL_I945GM_IDS(&i945gm_info),
932 	INTEL_I965G_IDS(&i965g_info),
933 	INTEL_G33_IDS(&g33_info),
934 	INTEL_I965GM_IDS(&i965gm_info),
935 	INTEL_GM45_IDS(&gm45_info),
936 	INTEL_G45_IDS(&g45_info),
937 	INTEL_PINEVIEW_G_IDS(&pnv_g_info),
938 	INTEL_PINEVIEW_M_IDS(&pnv_m_info),
939 	INTEL_IRONLAKE_D_IDS(&ilk_d_info),
940 	INTEL_IRONLAKE_M_IDS(&ilk_m_info),
941 	INTEL_SNB_D_GT1_IDS(&snb_d_gt1_info),
942 	INTEL_SNB_D_GT2_IDS(&snb_d_gt2_info),
943 	INTEL_SNB_M_GT1_IDS(&snb_m_gt1_info),
944 	INTEL_SNB_M_GT2_IDS(&snb_m_gt2_info),
945 	INTEL_IVB_Q_IDS(&ivb_q_info), /* must be first IVB */
946 	INTEL_IVB_M_GT1_IDS(&ivb_m_gt1_info),
947 	INTEL_IVB_M_GT2_IDS(&ivb_m_gt2_info),
948 	INTEL_IVB_D_GT1_IDS(&ivb_d_gt1_info),
949 	INTEL_IVB_D_GT2_IDS(&ivb_d_gt2_info),
950 	INTEL_HSW_GT1_IDS(&hsw_gt1_info),
951 	INTEL_HSW_GT2_IDS(&hsw_gt2_info),
952 	INTEL_HSW_GT3_IDS(&hsw_gt3_info),
953 	INTEL_VLV_IDS(&vlv_info),
954 	INTEL_BDW_GT1_IDS(&bdw_gt1_info),
955 	INTEL_BDW_GT2_IDS(&bdw_gt2_info),
956 	INTEL_BDW_GT3_IDS(&bdw_gt3_info),
957 	INTEL_BDW_RSVD_IDS(&bdw_rsvd_info),
958 	INTEL_CHV_IDS(&chv_info),
959 	INTEL_SKL_GT1_IDS(&skl_gt1_info),
960 	INTEL_SKL_GT2_IDS(&skl_gt2_info),
961 	INTEL_SKL_GT3_IDS(&skl_gt3_info),
962 	INTEL_SKL_GT4_IDS(&skl_gt4_info),
963 	INTEL_BXT_IDS(&bxt_info),
964 	INTEL_GLK_IDS(&glk_info),
965 	INTEL_KBL_GT1_IDS(&kbl_gt1_info),
966 	INTEL_KBL_GT2_IDS(&kbl_gt2_info),
967 	INTEL_KBL_GT3_IDS(&kbl_gt3_info),
968 	INTEL_KBL_GT4_IDS(&kbl_gt3_info),
969 	INTEL_AML_KBL_GT2_IDS(&kbl_gt2_info),
970 	INTEL_CFL_S_GT1_IDS(&cfl_gt1_info),
971 	INTEL_CFL_S_GT2_IDS(&cfl_gt2_info),
972 	INTEL_CFL_H_GT1_IDS(&cfl_gt1_info),
973 	INTEL_CFL_H_GT2_IDS(&cfl_gt2_info),
974 	INTEL_CFL_U_GT2_IDS(&cfl_gt2_info),
975 	INTEL_CFL_U_GT3_IDS(&cfl_gt3_info),
976 	INTEL_WHL_U_GT1_IDS(&cfl_gt1_info),
977 	INTEL_WHL_U_GT2_IDS(&cfl_gt2_info),
978 	INTEL_AML_CFL_GT2_IDS(&cfl_gt2_info),
979 	INTEL_WHL_U_GT3_IDS(&cfl_gt3_info),
980 	INTEL_CML_GT1_IDS(&cml_gt1_info),
981 	INTEL_CML_GT2_IDS(&cml_gt2_info),
982 	INTEL_CML_U_GT1_IDS(&cml_gt1_info),
983 	INTEL_CML_U_GT2_IDS(&cml_gt2_info),
984 	INTEL_CNL_IDS(&cnl_info),
985 	INTEL_ICL_11_IDS(&icl_info),
986 	INTEL_EHL_IDS(&ehl_info),
987 	INTEL_TGL_12_IDS(&tgl_info),
988 	INTEL_RKL_IDS(&rkl_info),
989 	{0, 0, 0}
990 };
991 MODULE_DEVICE_TABLE(pci, pciidlist);
992 
993 static void i915_pci_remove(struct pci_dev *pdev)
994 {
995 	struct drm_i915_private *i915;
996 
997 	i915 = pci_get_drvdata(pdev);
998 	if (!i915) /* driver load aborted, nothing to cleanup */
999 		return;
1000 
1001 	i915_driver_remove(i915);
1002 	pci_set_drvdata(pdev, NULL);
1003 }
1004 
1005 /* is device_id present in comma separated list of ids */
1006 static bool force_probe(u16 device_id, const char *devices)
1007 {
1008 	char *s, *p, *tok;
1009 	bool ret;
1010 
1011 	if (!devices || !*devices)
1012 		return false;
1013 
1014 	/* match everything */
1015 	if (strcmp(devices, "*") == 0)
1016 		return true;
1017 
1018 	s = kstrdup(devices, GFP_KERNEL);
1019 	if (!s)
1020 		return false;
1021 
1022 	for (p = s, ret = false; (tok = strsep(&p, ",")) != NULL; ) {
1023 		u16 val;
1024 
1025 		if (kstrtou16(tok, 16, &val) == 0 && val == device_id) {
1026 			ret = true;
1027 			break;
1028 		}
1029 	}
1030 
1031 	kfree(s);
1032 
1033 	return ret;
1034 }
1035 
1036 static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1037 {
1038 	struct intel_device_info *intel_info =
1039 		(struct intel_device_info *) ent->driver_data;
1040 	int err;
1041 
1042 	if (intel_info->require_force_probe &&
1043 	    !force_probe(pdev->device, i915_modparams.force_probe)) {
1044 		dev_info(&pdev->dev,
1045 			 "Your graphics device %04x is not properly supported by the driver in this\n"
1046 			 "kernel version. To force driver probe anyway, use i915.force_probe=%04x\n"
1047 			 "module parameter or CONFIG_DRM_I915_FORCE_PROBE=%04x configuration option,\n"
1048 			 "or (recommended) check for kernel updates.\n",
1049 			 pdev->device, pdev->device, pdev->device);
1050 		return -ENODEV;
1051 	}
1052 
1053 	/* Only bind to function 0 of the device. Early generations
1054 	 * used function 1 as a placeholder for multi-head. This causes
1055 	 * us confusion instead, especially on the systems where both
1056 	 * functions have the same PCI-ID!
1057 	 */
1058 	if (PCI_FUNC(pdev->devfn))
1059 		return -ENODEV;
1060 
1061 	/*
1062 	 * apple-gmux is needed on dual GPU MacBook Pro
1063 	 * to probe the panel if we're the inactive GPU.
1064 	 */
1065 	if (vga_switcheroo_client_probe_defer(pdev))
1066 		return -EPROBE_DEFER;
1067 
1068 	err = i915_driver_probe(pdev, ent);
1069 	if (err)
1070 		return err;
1071 
1072 	if (i915_inject_probe_failure(pci_get_drvdata(pdev))) {
1073 		i915_pci_remove(pdev);
1074 		return -ENODEV;
1075 	}
1076 
1077 	err = i915_live_selftests(pdev);
1078 	if (err) {
1079 		i915_pci_remove(pdev);
1080 		return err > 0 ? -ENOTTY : err;
1081 	}
1082 
1083 	err = i915_perf_selftests(pdev);
1084 	if (err) {
1085 		i915_pci_remove(pdev);
1086 		return err > 0 ? -ENOTTY : err;
1087 	}
1088 
1089 	return 0;
1090 }
1091 
1092 static struct pci_driver i915_pci_driver = {
1093 	.name = DRIVER_NAME,
1094 	.id_table = pciidlist,
1095 	.probe = i915_pci_probe,
1096 	.remove = i915_pci_remove,
1097 	.driver.pm = &i915_pm_ops,
1098 };
1099 
1100 static int __init i915_init(void)
1101 {
1102 	bool use_kms = true;
1103 	int err;
1104 
1105 	err = i915_globals_init();
1106 	if (err)
1107 		return err;
1108 
1109 	err = i915_mock_selftests();
1110 	if (err)
1111 		return err > 0 ? 0 : err;
1112 
1113 	/*
1114 	 * Enable KMS by default, unless explicitly overriden by
1115 	 * either the i915.modeset prarameter or by the
1116 	 * vga_text_mode_force boot option.
1117 	 */
1118 
1119 	if (i915_modparams.modeset == 0)
1120 		use_kms = false;
1121 
1122 	if (vgacon_text_force() && i915_modparams.modeset == -1)
1123 		use_kms = false;
1124 
1125 	if (!use_kms) {
1126 		/* Silently fail loading to not upset userspace. */
1127 		DRM_DEBUG_DRIVER("KMS disabled.\n");
1128 		return 0;
1129 	}
1130 
1131 	err = pci_register_driver(&i915_pci_driver);
1132 	if (err)
1133 		return err;
1134 
1135 	i915_perf_sysctl_register();
1136 	return 0;
1137 }
1138 
1139 static void __exit i915_exit(void)
1140 {
1141 	if (!i915_pci_driver.driver.owner)
1142 		return;
1143 
1144 	i915_perf_sysctl_unregister();
1145 	pci_unregister_driver(&i915_pci_driver);
1146 	i915_globals_exit();
1147 }
1148 
1149 module_init(i915_init);
1150 module_exit(i915_exit);
1151 
1152 MODULE_AUTHOR("Tungsten Graphics, Inc.");
1153 MODULE_AUTHOR("Intel Corporation");
1154 
1155 MODULE_DESCRIPTION(DRIVER_DESC);
1156 MODULE_LICENSE("GPL and additional rights");
1157