xref: /dragonfly/sys/dev/drm/i915/i915_pci.c (revision 2b57e6df)
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/vgaarb.h>
27 #include <linux/vga_switcheroo.h>
28 
29 #include "i915_drv.h"
30 #include "i915_selftest.h"
31 
32 #define GEN_DEFAULT_PIPEOFFSETS \
33 	.pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
34 			  PIPE_C_OFFSET, PIPE_EDP_OFFSET }, \
35 	.trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
36 			   TRANSCODER_C_OFFSET, TRANSCODER_EDP_OFFSET }, \
37 	.palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET }
38 
39 #define GEN_CHV_PIPEOFFSETS \
40 	.pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
41 			  CHV_PIPE_C_OFFSET }, \
42 	.trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
43 			   CHV_TRANSCODER_C_OFFSET, }, \
44 	.palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET, \
45 			     CHV_PALETTE_C_OFFSET }
46 
47 #define CURSOR_OFFSETS \
48 	.cursor_offsets = { CURSOR_A_OFFSET, CURSOR_B_OFFSET, CHV_CURSOR_C_OFFSET }
49 
50 #define IVB_CURSOR_OFFSETS \
51 	.cursor_offsets = { CURSOR_A_OFFSET, IVB_CURSOR_B_OFFSET, IVB_CURSOR_C_OFFSET }
52 
53 #define BDW_COLORS \
54 	.color = { .degamma_lut_size = 512, .gamma_lut_size = 512 }
55 #define CHV_COLORS \
56 	.color = { .degamma_lut_size = 65, .gamma_lut_size = 257 }
57 
58 /* Keep in gen based order, and chronological order within a gen */
59 #define GEN2_FEATURES \
60 	.gen = 2, .num_pipes = 1, \
61 	.has_overlay = 1, .overlay_needs_physical = 1, \
62 	.has_gmch_display = 1, \
63 	.hws_needs_physical = 1, \
64 	.unfenced_needs_alignment = 1, \
65 	.ring_mask = RENDER_RING, \
66 	GEN_DEFAULT_PIPEOFFSETS, \
67 	CURSOR_OFFSETS
68 
69 static const struct intel_device_info intel_i830_info = {
70 	GEN2_FEATURES,
71 	.platform = INTEL_I830,
72 	.is_mobile = 1, .cursor_needs_physical = 1,
73 	.num_pipes = 2, /* legal, last one wins */
74 };
75 
76 static const struct intel_device_info intel_i845g_info = {
77 	GEN2_FEATURES,
78 	.platform = INTEL_I845G,
79 };
80 
81 static const struct intel_device_info intel_i85x_info = {
82 	GEN2_FEATURES,
83 	.platform = INTEL_I85X, .is_mobile = 1,
84 	.num_pipes = 2, /* legal, last one wins */
85 	.cursor_needs_physical = 1,
86 	.has_fbc = 1,
87 };
88 
89 static const struct intel_device_info intel_i865g_info = {
90 	GEN2_FEATURES,
91 	.platform = INTEL_I865G,
92 };
93 
94 #define GEN3_FEATURES \
95 	.gen = 3, .num_pipes = 2, \
96 	.has_gmch_display = 1, \
97 	.ring_mask = RENDER_RING, \
98 	GEN_DEFAULT_PIPEOFFSETS, \
99 	CURSOR_OFFSETS
100 
101 static const struct intel_device_info intel_i915g_info = {
102 	GEN3_FEATURES,
103 	.platform = INTEL_I915G, .cursor_needs_physical = 1,
104 	.has_overlay = 1, .overlay_needs_physical = 1,
105 	.hws_needs_physical = 1,
106 	.unfenced_needs_alignment = 1,
107 };
108 
109 static const struct intel_device_info intel_i915gm_info = {
110 	GEN3_FEATURES,
111 	.platform = INTEL_I915GM,
112 	.is_mobile = 1,
113 	.cursor_needs_physical = 1,
114 	.has_overlay = 1, .overlay_needs_physical = 1,
115 	.supports_tv = 1,
116 	.has_fbc = 1,
117 	.hws_needs_physical = 1,
118 	.unfenced_needs_alignment = 1,
119 };
120 
121 static const struct intel_device_info intel_i945g_info = {
122 	GEN3_FEATURES,
123 	.platform = INTEL_I945G,
124 	.has_hotplug = 1, .cursor_needs_physical = 1,
125 	.has_overlay = 1, .overlay_needs_physical = 1,
126 	.hws_needs_physical = 1,
127 	.unfenced_needs_alignment = 1,
128 };
129 
130 static const struct intel_device_info intel_i945gm_info = {
131 	GEN3_FEATURES,
132 	.platform = INTEL_I945GM, .is_mobile = 1,
133 	.has_hotplug = 1, .cursor_needs_physical = 1,
134 	.has_overlay = 1, .overlay_needs_physical = 1,
135 	.supports_tv = 1,
136 	.has_fbc = 1,
137 	.hws_needs_physical = 1,
138 	.unfenced_needs_alignment = 1,
139 };
140 
141 static const struct intel_device_info intel_g33_info = {
142 	GEN3_FEATURES,
143 	.platform = INTEL_G33,
144 	.has_hotplug = 1,
145 	.has_overlay = 1,
146 };
147 
148 static const struct intel_device_info intel_pineview_info = {
149 	GEN3_FEATURES,
150 	.platform = INTEL_PINEVIEW, .is_mobile = 1,
151 	.has_hotplug = 1,
152 	.has_overlay = 1,
153 };
154 
155 #define GEN4_FEATURES \
156 	.gen = 4, .num_pipes = 2, \
157 	.has_hotplug = 1, \
158 	.has_gmch_display = 1, \
159 	.ring_mask = RENDER_RING, \
160 	GEN_DEFAULT_PIPEOFFSETS, \
161 	CURSOR_OFFSETS
162 
163 static const struct intel_device_info intel_i965g_info = {
164 	GEN4_FEATURES,
165 	.platform = INTEL_I965G,
166 	.has_overlay = 1,
167 	.hws_needs_physical = 1,
168 };
169 
170 static const struct intel_device_info intel_i965gm_info = {
171 	GEN4_FEATURES,
172 	.platform = INTEL_I965GM,
173 	.is_mobile = 1, .has_fbc = 1,
174 	.has_overlay = 1,
175 	.supports_tv = 1,
176 	.hws_needs_physical = 1,
177 };
178 
179 static const struct intel_device_info intel_g45_info = {
180 	GEN4_FEATURES,
181 	.platform = INTEL_G45,
182 	.has_pipe_cxsr = 1,
183 	.ring_mask = RENDER_RING | BSD_RING,
184 };
185 
186 static const struct intel_device_info intel_gm45_info = {
187 	GEN4_FEATURES,
188 	.platform = INTEL_GM45,
189 	.is_mobile = 1, .has_fbc = 1,
190 	.has_pipe_cxsr = 1,
191 	.supports_tv = 1,
192 	.ring_mask = RENDER_RING | BSD_RING,
193 };
194 
195 #define GEN5_FEATURES \
196 	.gen = 5, .num_pipes = 2, \
197 	.has_hotplug = 1, \
198 	.has_gmbus_irq = 1, \
199 	.ring_mask = RENDER_RING | BSD_RING, \
200 	GEN_DEFAULT_PIPEOFFSETS, \
201 	CURSOR_OFFSETS
202 
203 static const struct intel_device_info intel_ironlake_d_info = {
204 	GEN5_FEATURES,
205 	.platform = INTEL_IRONLAKE,
206 };
207 
208 static const struct intel_device_info intel_ironlake_m_info = {
209 	GEN5_FEATURES,
210 	.platform = INTEL_IRONLAKE,
211 	.is_mobile = 1, .has_fbc = 1,
212 };
213 
214 #define GEN6_FEATURES \
215 	.gen = 6, .num_pipes = 2, \
216 	.has_hotplug = 1, \
217 	.has_fbc = 1, \
218 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
219 	.has_llc = 1, \
220 	.has_rc6 = 1, \
221 	.has_rc6p = 1, \
222 	.has_gmbus_irq = 1, \
223 	.has_hw_contexts = 1, \
224 	.has_aliasing_ppgtt = 1, \
225 	GEN_DEFAULT_PIPEOFFSETS, \
226 	CURSOR_OFFSETS
227 
228 static const struct intel_device_info intel_sandybridge_d_info = {
229 	GEN6_FEATURES,
230 	.platform = INTEL_SANDYBRIDGE,
231 };
232 
233 static const struct intel_device_info intel_sandybridge_m_info = {
234 	GEN6_FEATURES,
235 	.platform = INTEL_SANDYBRIDGE,
236 	.is_mobile = 1,
237 };
238 
239 #define GEN7_FEATURES  \
240 	.gen = 7, .num_pipes = 3, \
241 	.has_hotplug = 1, \
242 	.has_fbc = 1, \
243 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
244 	.has_llc = 1, \
245 	.has_rc6 = 1, \
246 	.has_rc6p = 1, \
247 	.has_gmbus_irq = 1, \
248 	.has_hw_contexts = 1, \
249 	.has_aliasing_ppgtt = 1, \
250 	.has_full_ppgtt = 1, \
251 	GEN_DEFAULT_PIPEOFFSETS, \
252 	IVB_CURSOR_OFFSETS
253 
254 static const struct intel_device_info intel_ivybridge_d_info = {
255 	GEN7_FEATURES,
256 	.platform = INTEL_IVYBRIDGE,
257 	.has_l3_dpf = 1,
258 };
259 
260 static const struct intel_device_info intel_ivybridge_m_info = {
261 	GEN7_FEATURES,
262 	.platform = INTEL_IVYBRIDGE,
263 	.is_mobile = 1,
264 	.has_l3_dpf = 1,
265 };
266 
267 static const struct intel_device_info intel_ivybridge_q_info = {
268 	GEN7_FEATURES,
269 	.platform = INTEL_IVYBRIDGE,
270 	.num_pipes = 0, /* legal, last one wins */
271 	.has_l3_dpf = 1,
272 };
273 
274 static const struct intel_device_info intel_valleyview_info = {
275 	.platform = INTEL_VALLEYVIEW,
276 	.gen = 7,
277 	.is_lp = 1,
278 	.num_pipes = 2,
279 	.has_psr = 1,
280 	.has_runtime_pm = 1,
281 	.has_rc6 = 1,
282 	.has_gmbus_irq = 1,
283 	.has_hw_contexts = 1,
284 	.has_gmch_display = 1,
285 	.has_hotplug = 1,
286 	.has_aliasing_ppgtt = 1,
287 	.has_full_ppgtt = 1,
288 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING,
289 	.display_mmio_offset = VLV_DISPLAY_BASE,
290 	GEN_DEFAULT_PIPEOFFSETS,
291 	CURSOR_OFFSETS
292 };
293 
294 #define HSW_FEATURES  \
295 	GEN7_FEATURES, \
296 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING, \
297 	.has_ddi = 1, \
298 	.has_fpga_dbg = 1, \
299 	.has_psr = 1, \
300 	.has_resource_streamer = 1, \
301 	.has_dp_mst = 1, \
302 	.has_rc6p = 0 /* RC6p removed-by HSW */, \
303 	.has_runtime_pm = 1
304 
305 static const struct intel_device_info intel_haswell_info = {
306 	HSW_FEATURES,
307 	.platform = INTEL_HASWELL,
308 	.has_l3_dpf = 1,
309 };
310 
311 #define BDW_FEATURES \
312 	HSW_FEATURES, \
313 	BDW_COLORS, \
314 	.has_logical_ring_contexts = 1, \
315 	.has_full_48bit_ppgtt = 1, \
316 	.has_64bit_reloc = 1
317 
318 static const struct intel_device_info intel_broadwell_info = {
319 	BDW_FEATURES,
320 	.gen = 8,
321 	.platform = INTEL_BROADWELL,
322 };
323 
324 static const struct intel_device_info intel_broadwell_gt3_info = {
325 	BDW_FEATURES,
326 	.gen = 8,
327 	.platform = INTEL_BROADWELL,
328 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
329 };
330 
331 static const struct intel_device_info intel_cherryview_info = {
332 	.gen = 8, .num_pipes = 3,
333 	.has_hotplug = 1,
334 	.is_lp = 1,
335 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
336 	.platform = INTEL_CHERRYVIEW,
337 	.has_64bit_reloc = 1,
338 	.has_psr = 1,
339 	.has_runtime_pm = 1,
340 	.has_resource_streamer = 1,
341 	.has_rc6 = 1,
342 	.has_gmbus_irq = 1,
343 	.has_hw_contexts = 1,
344 	.has_logical_ring_contexts = 1,
345 	.has_gmch_display = 1,
346 	.has_aliasing_ppgtt = 1,
347 	.has_full_ppgtt = 1,
348 	.display_mmio_offset = VLV_DISPLAY_BASE,
349 	GEN_CHV_PIPEOFFSETS,
350 	CURSOR_OFFSETS,
351 	CHV_COLORS,
352 };
353 
354 #define GEN9_FEATURES \
355 	BDW_FEATURES, \
356 	.gen = 9, \
357 	.ddb_size = 896
358 
359 static const struct intel_device_info intel_skylake_info = {
360 	BDW_FEATURES,
361 	.platform = INTEL_SKYLAKE,
362 	.gen = 9,
363 	.has_csr = 1,
364 	.has_guc = 1,
365 	.ddb_size = 896,
366 };
367 
368 static const struct intel_device_info intel_skylake_gt3_info = {
369 	BDW_FEATURES,
370 	.platform = INTEL_SKYLAKE,
371 	.gen = 9,
372 	.has_csr = 1,
373 	.has_guc = 1,
374 	.ddb_size = 896,
375 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
376 };
377 
378 #define GEN9_LP_FEATURES \
379 	.gen = 9, \
380 	.is_lp = 1, \
381 	.has_hotplug = 1, \
382 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING, \
383 	.num_pipes = 3, \
384 	.has_64bit_reloc = 1, \
385 	.has_ddi = 1, \
386 	.has_fpga_dbg = 1, \
387 	.has_fbc = 1, \
388 	.has_runtime_pm = 1, \
389 	.has_pooled_eu = 0, \
390 	.has_csr = 1, \
391 	.has_resource_streamer = 1, \
392 	.has_rc6 = 1, \
393 	.has_dp_mst = 1, \
394 	.has_gmbus_irq = 1, \
395 	.has_hw_contexts = 1, \
396 	.has_logical_ring_contexts = 1, \
397 	.has_guc = 1, \
398 	.has_aliasing_ppgtt = 1, \
399 	.has_full_ppgtt = 1, \
400 	.has_full_48bit_ppgtt = 1, \
401 	GEN_DEFAULT_PIPEOFFSETS, \
402 	IVB_CURSOR_OFFSETS, \
403 	BDW_COLORS
404 
405 static const struct intel_device_info intel_broxton_info = {
406 	GEN9_LP_FEATURES,
407 	.platform = INTEL_BROXTON,
408 	.ddb_size = 512,
409 };
410 
411 static const struct intel_device_info intel_geminilake_info = {
412 	GEN9_LP_FEATURES,
413 	.platform = INTEL_GEMINILAKE,
414 	.is_alpha_support = 1,
415 	.ddb_size = 1024,
416 	.color = { .degamma_lut_size = 0, .gamma_lut_size = 1024 }
417 };
418 
419 static const struct intel_device_info intel_kabylake_gt1_info = {
420 	BDW_FEATURES,
421 	.platform = INTEL_KABYLAKE,
422 	.gen = 9,
423 	.has_csr = 1,
424 	.has_guc = 1,
425 	.ddb_size = 896,
426 };
427 
428 static const struct intel_device_info intel_kabylake_gt2_info = {
429 	BDW_FEATURES,
430 	.platform = INTEL_KABYLAKE,
431 	.gen = 9,
432 	.has_csr = 1,
433 	.has_guc = 1,
434 	.ddb_size = 896,
435 };
436 
437 static const struct intel_device_info intel_kabylake_gt3_info = {
438 	BDW_FEATURES,
439 	.platform = INTEL_KABYLAKE,
440 	.gen = 9,
441 	.has_csr = 1,
442 	.has_guc = 1,
443 	.ddb_size = 896,
444 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
445 };
446 
447 #define CFL_PLATFORM \
448 	GEN9_FEATURES, \
449 	.platform = INTEL_KABYLAKE
450 
451 static const struct intel_device_info intel_coffeelake_gt1_info = {
452 	CFL_PLATFORM,
453 };
454 
455 static const struct intel_device_info intel_coffeelake_gt2_info = {
456 	CFL_PLATFORM,
457 };
458 
459 static const struct intel_device_info intel_coffeelake_gt3_info = {
460 	CFL_PLATFORM,
461 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
462 };
463 
464 /*
465  * Make sure any device matches here are from most specific to most
466  * general.  For example, since the Quanta match is based on the subsystem
467  * and subvendor IDs, we need it to come before the more general IVB
468  * PCI ID matches, otherwise we'll use the wrong info struct above.
469  */
470 static const struct pci_device_id pciidlist[] = {
471 	INTEL_I830_IDS(&intel_i830_info),
472 	INTEL_I845G_IDS(&intel_i845g_info),
473 	INTEL_I85X_IDS(&intel_i85x_info),
474 	INTEL_I865G_IDS(&intel_i865g_info),
475 	INTEL_I915G_IDS(&intel_i915g_info),
476 	INTEL_I915GM_IDS(&intel_i915gm_info),
477 	INTEL_I945G_IDS(&intel_i945g_info),
478 	INTEL_I945GM_IDS(&intel_i945gm_info),
479 	INTEL_I965G_IDS(&intel_i965g_info),
480 	INTEL_G33_IDS(&intel_g33_info),
481 	INTEL_I965GM_IDS(&intel_i965gm_info),
482 	INTEL_GM45_IDS(&intel_gm45_info),
483 	INTEL_G45_IDS(&intel_g45_info),
484 	INTEL_PINEVIEW_IDS(&intel_pineview_info),
485 	INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info),
486 	INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info),
487 	INTEL_SNB_D_IDS(&intel_sandybridge_d_info),
488 	INTEL_SNB_M_IDS(&intel_sandybridge_m_info),
489 	INTEL_IVB_Q_IDS(&intel_ivybridge_q_info), /* must be first IVB */
490 	INTEL_IVB_M_IDS(&intel_ivybridge_m_info),
491 	INTEL_IVB_D_IDS(&intel_ivybridge_d_info),
492 	INTEL_HSW_IDS(&intel_haswell_info),
493 	INTEL_VLV_IDS(&intel_valleyview_info),
494 	INTEL_BDW_GT12_IDS(&intel_broadwell_info),
495 	INTEL_BDW_GT3_IDS(&intel_broadwell_gt3_info),
496 	INTEL_BDW_RSVD_IDS(&intel_broadwell_info),
497 	INTEL_CHV_IDS(&intel_cherryview_info),
498 	INTEL_SKL_GT1_IDS(&intel_skylake_info),
499 	INTEL_SKL_GT2_IDS(&intel_skylake_info),
500 	INTEL_SKL_GT3_IDS(&intel_skylake_gt3_info),
501 	INTEL_SKL_GT4_IDS(&intel_skylake_gt3_info),
502 	INTEL_BXT_IDS(&intel_broxton_info),
503 	INTEL_GLK_IDS(&intel_geminilake_info),
504 	INTEL_KBL_GT1_IDS(&intel_kabylake_gt1_info),
505 	INTEL_KBL_GT2_IDS(&intel_kabylake_gt2_info),
506 	INTEL_KBL_GT3_IDS(&intel_kabylake_gt3_info),
507 	INTEL_KBL_GT4_IDS(&intel_kabylake_gt3_info),
508 	INTEL_AML_KBL_GT2_IDS(&intel_kabylake_gt2_info),
509 	INTEL_CFL_S_GT1_IDS(&intel_coffeelake_gt1_info),
510 	INTEL_CFL_S_GT2_IDS(&intel_coffeelake_gt2_info),
511 	INTEL_CFL_H_GT1_IDS(&intel_coffeelake_gt1_info),
512 	INTEL_CFL_H_GT2_IDS(&intel_coffeelake_gt2_info),
513 	INTEL_CFL_U_GT2_IDS(&intel_coffeelake_gt2_info),
514 	INTEL_CFL_U_GT3_IDS(&intel_coffeelake_gt3_info),
515 	INTEL_WHL_U_GT1_IDS(&intel_coffeelake_gt1_info),
516 	INTEL_WHL_U_GT2_IDS(&intel_coffeelake_gt2_info),
517 	INTEL_AML_CFL_GT2_IDS(&intel_coffeelake_gt2_info),
518 	INTEL_WHL_U_GT3_IDS(&intel_coffeelake_gt3_info),
519 	INTEL_CML_GT1_IDS(&intel_coffeelake_gt1_info),
520 	INTEL_CML_GT2_IDS(&intel_coffeelake_gt2_info),
521 	{0, 0, 0}
522 };
523 MODULE_DEVICE_TABLE(pci, pciidlist);
524 
525 static void i915_pci_remove(struct pci_dev *pdev)
526 {
527 	struct drm_device *dev = pci_get_drvdata(pdev);
528 
529 	i915_driver_unload(dev);
530 	drm_dev_unref(dev);
531 }
532 
533 static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
534 {
535 	struct intel_device_info *intel_info =
536 		(struct intel_device_info *) ent->driver_data;
537 	int err;
538 
539 	if (IS_ALPHA_SUPPORT(intel_info) && !i915.alpha_support) {
540 		DRM_INFO("The driver support for your hardware in this kernel version is alpha quality\n"
541 			 "See CONFIG_DRM_I915_ALPHA_SUPPORT or i915.alpha_support module parameter\n"
542 			 "to enable support in this kernel version, or check for kernel updates.\n");
543 		return -ENODEV;
544 	}
545 
546 	/* Only bind to function 0 of the device. Early generations
547 	 * used function 1 as a placeholder for multi-head. This causes
548 	 * us confusion instead, especially on the systems where both
549 	 * functions have the same PCI-ID!
550 	 */
551 	if (PCI_FUNC(pdev->devfn))
552 		return -ENODEV;
553 
554 	/*
555 	 * apple-gmux is needed on dual GPU MacBook Pro
556 	 * to probe the panel if we're the inactive GPU.
557 	 */
558 	if (vga_switcheroo_client_probe_defer(pdev))
559 		return -EPROBE_DEFER;
560 
561 	err = i915_driver_load(pdev, ent);
562 	if (err)
563 		return err;
564 
565 	err = i915_live_selftests(pdev);
566 	if (err) {
567 		i915_pci_remove(pdev);
568 		return err > 0 ? -ENOTTY : err;
569 	}
570 
571 	return 0;
572 }
573 
574 static struct pci_driver i915_pci_driver = {
575 	.name = DRIVER_NAME,
576 	.id_table = pciidlist,
577 	.probe = i915_pci_probe,
578 	.remove = i915_pci_remove,
579 #if 0
580 	.driver.pm = &i915_pm_ops,
581 #endif
582 };
583 
584 static int __init i915_init(void)
585 {
586 	bool use_kms = true;
587 	int err;
588 
589 	err = i915_mock_selftests();
590 	if (err)
591 		return err > 0 ? 0 : err;
592 
593 	/*
594 	 * Enable KMS by default, unless explicitly overriden by
595 	 * either the i915.modeset prarameter or by the
596 	 * vga_text_mode_force boot option.
597 	 */
598 
599 	if (i915.modeset == 0)
600 		use_kms = false;
601 
602 	if (vgacon_text_force() && i915.modeset == -1)
603 		use_kms = false;
604 
605 	if (!use_kms) {
606 		/* Silently fail loading to not upset userspace. */
607 		DRM_DEBUG_DRIVER("KMS disabled.\n");
608 		return 0;
609 	}
610 
611 	return pci_register_driver(&i915_pci_driver);
612 }
613 
614 static void __exit i915_exit(void)
615 {
616 #if 0
617 	if (!i915_pci_driver.driver.owner)
618 		return;
619 #endif
620 
621 	pci_unregister_driver(&i915_pci_driver);
622 }
623 
624 module_init(i915_init);
625 module_exit(i915_exit);
626 
627 MODULE_AUTHOR("Tungsten Graphics, Inc.");
628 MODULE_AUTHOR("Intel Corporation");
629 
630 static int
631 i915_pci_probe_dfly(device_t kdev)
632 {
633 	int device, i = 0;
634 	const struct pci_device_id *ent;
635 	static struct pci_dev *pdev = NULL;
636 	static device_t bsddev;
637 
638 	if (pci_get_class(kdev) != PCIC_DISPLAY)
639 		return ENXIO;
640 
641 	if (pci_get_vendor(kdev) != PCI_VENDOR_ID_INTEL)
642 		return ENXIO;
643 
644 	device = pci_get_device(kdev);
645 
646 	for (i = 0; pciidlist[i].device != 0; i++) {
647 		if (pciidlist[i].device == device) {
648 			ent = &pciidlist[i];
649 			goto found;
650 		}
651 	}
652 
653 	return ENXIO;
654 found:
655 	if (!strcmp(device_get_name(kdev), "drmsub"))
656 		bsddev = device_get_parent(kdev);
657 	else
658 		bsddev = kdev;
659 
660 	drm_init_pdev(bsddev, &pdev);
661 
662 	/* Print the contents of pdev struct. */
663 	drm_print_pdev(pdev);
664 
665 	return i915_pci_probe(pdev, ent);
666 }
667 
668 static int i915_driver_attach(device_t kdev)
669 {
670 	return 0;
671 }
672 
673 static device_method_t i915_methods[] = {
674 	/* Device interface */
675 	DEVMETHOD(device_probe,		i915_pci_probe_dfly),
676 	DEVMETHOD(device_attach,	i915_driver_attach),
677 #if 0
678 	DEVMETHOD(device_suspend,	i915_suspend_switcheroo),
679 	DEVMETHOD(device_resume,	i915_resume_switcheroo),
680 #endif
681 	DEVMETHOD(device_detach,	drm_release),
682 	DEVMETHOD_END
683 };
684 
685 static driver_t i915_driver = {
686 	"drm",
687 	i915_methods,
688 	sizeof(struct drm_softc)
689 };
690 
691 extern devclass_t drm_devclass;
692 
693 DRIVER_MODULE_ORDERED(i915, vgapci, i915_driver, drm_devclass, NULL, NULL, SI_ORDER_ANY);
694 MODULE_DEPEND(i915, drm, 1, 1, 1);
695 #ifdef CONFIG_ACPI
696 MODULE_DEPEND(i915, acpi, 1, 1, 1);
697 #endif
698