xref: /dflybsd-src/sys/dev/drm/i915/i915_pci.c (revision 872a09d51adf63b4bdae6adb1d96a53f76e161e2)
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 
31 #define GEN_DEFAULT_PIPEOFFSETS \
32 	.pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
33 			  PIPE_C_OFFSET, PIPE_EDP_OFFSET }, \
34 	.trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
35 			   TRANSCODER_C_OFFSET, TRANSCODER_EDP_OFFSET }, \
36 	.palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET }
37 
38 #define GEN_CHV_PIPEOFFSETS \
39 	.pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
40 			  CHV_PIPE_C_OFFSET }, \
41 	.trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
42 			   CHV_TRANSCODER_C_OFFSET, }, \
43 	.palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET, \
44 			     CHV_PALETTE_C_OFFSET }
45 
46 #define CURSOR_OFFSETS \
47 	.cursor_offsets = { CURSOR_A_OFFSET, CURSOR_B_OFFSET, CHV_CURSOR_C_OFFSET }
48 
49 #define IVB_CURSOR_OFFSETS \
50 	.cursor_offsets = { CURSOR_A_OFFSET, IVB_CURSOR_B_OFFSET, IVB_CURSOR_C_OFFSET }
51 
52 #define BDW_COLORS \
53 	.color = { .degamma_lut_size = 512, .gamma_lut_size = 512 }
54 #define CHV_COLORS \
55 	.color = { .degamma_lut_size = 65, .gamma_lut_size = 257 }
56 
57 static const struct intel_device_info intel_i830_info = {
58 	.gen = 2, .is_mobile = 1, .cursor_needs_physical = 1, .num_pipes = 2,
59 	.has_overlay = 1, .overlay_needs_physical = 1,
60 	.ring_mask = RENDER_RING,
61 	GEN_DEFAULT_PIPEOFFSETS,
62 	CURSOR_OFFSETS,
63 };
64 
65 static const struct intel_device_info intel_845g_info = {
66 	.gen = 2, .num_pipes = 1,
67 	.has_overlay = 1, .overlay_needs_physical = 1,
68 	.ring_mask = RENDER_RING,
69 	GEN_DEFAULT_PIPEOFFSETS,
70 	CURSOR_OFFSETS,
71 };
72 
73 static const struct intel_device_info intel_i85x_info = {
74 	.gen = 2, .is_i85x = 1, .is_mobile = 1, .num_pipes = 2,
75 	.cursor_needs_physical = 1,
76 	.has_overlay = 1, .overlay_needs_physical = 1,
77 	.has_fbc = 1,
78 	.ring_mask = RENDER_RING,
79 	GEN_DEFAULT_PIPEOFFSETS,
80 	CURSOR_OFFSETS,
81 };
82 
83 static const struct intel_device_info intel_i865g_info = {
84 	.gen = 2, .num_pipes = 1,
85 	.has_overlay = 1, .overlay_needs_physical = 1,
86 	.ring_mask = RENDER_RING,
87 	GEN_DEFAULT_PIPEOFFSETS,
88 	CURSOR_OFFSETS,
89 };
90 
91 static const struct intel_device_info intel_i915g_info = {
92 	.gen = 3, .is_i915g = 1, .cursor_needs_physical = 1, .num_pipes = 2,
93 	.has_overlay = 1, .overlay_needs_physical = 1,
94 	.ring_mask = RENDER_RING,
95 	GEN_DEFAULT_PIPEOFFSETS,
96 	CURSOR_OFFSETS,
97 };
98 static const struct intel_device_info intel_i915gm_info = {
99 	.gen = 3, .is_mobile = 1, .num_pipes = 2,
100 	.cursor_needs_physical = 1,
101 	.has_overlay = 1, .overlay_needs_physical = 1,
102 	.supports_tv = 1,
103 	.has_fbc = 1,
104 	.ring_mask = RENDER_RING,
105 	GEN_DEFAULT_PIPEOFFSETS,
106 	CURSOR_OFFSETS,
107 };
108 static const struct intel_device_info intel_i945g_info = {
109 	.gen = 3, .has_hotplug = 1, .cursor_needs_physical = 1, .num_pipes = 2,
110 	.has_overlay = 1, .overlay_needs_physical = 1,
111 	.ring_mask = RENDER_RING,
112 	GEN_DEFAULT_PIPEOFFSETS,
113 	CURSOR_OFFSETS,
114 };
115 static const struct intel_device_info intel_i945gm_info = {
116 	.gen = 3, .is_i945gm = 1, .is_mobile = 1, .num_pipes = 2,
117 	.has_hotplug = 1, .cursor_needs_physical = 1,
118 	.has_overlay = 1, .overlay_needs_physical = 1,
119 	.supports_tv = 1,
120 	.has_fbc = 1,
121 	.ring_mask = RENDER_RING,
122 	GEN_DEFAULT_PIPEOFFSETS,
123 	CURSOR_OFFSETS,
124 };
125 
126 static const struct intel_device_info intel_i965g_info = {
127 	.gen = 4, .is_broadwater = 1, .num_pipes = 2,
128 	.has_hotplug = 1,
129 	.has_overlay = 1,
130 	.ring_mask = RENDER_RING,
131 	GEN_DEFAULT_PIPEOFFSETS,
132 	CURSOR_OFFSETS,
133 };
134 
135 static const struct intel_device_info intel_i965gm_info = {
136 	.gen = 4, .is_crestline = 1, .num_pipes = 2,
137 	.is_mobile = 1, .has_fbc = 1, .has_hotplug = 1,
138 	.has_overlay = 1,
139 	.supports_tv = 1,
140 	.ring_mask = RENDER_RING,
141 	GEN_DEFAULT_PIPEOFFSETS,
142 	CURSOR_OFFSETS,
143 };
144 
145 static const struct intel_device_info intel_g33_info = {
146 	.gen = 3, .is_g33 = 1, .num_pipes = 2,
147 	.need_gfx_hws = 1, .has_hotplug = 1,
148 	.has_overlay = 1,
149 	.ring_mask = RENDER_RING,
150 	GEN_DEFAULT_PIPEOFFSETS,
151 	CURSOR_OFFSETS,
152 };
153 
154 static const struct intel_device_info intel_g45_info = {
155 	.gen = 4, .is_g4x = 1, .need_gfx_hws = 1, .num_pipes = 2,
156 	.has_pipe_cxsr = 1, .has_hotplug = 1,
157 	.ring_mask = RENDER_RING | BSD_RING,
158 	GEN_DEFAULT_PIPEOFFSETS,
159 	CURSOR_OFFSETS,
160 };
161 
162 static const struct intel_device_info intel_gm45_info = {
163 	.gen = 4, .is_g4x = 1, .num_pipes = 2,
164 	.is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1,
165 	.has_pipe_cxsr = 1, .has_hotplug = 1,
166 	.supports_tv = 1,
167 	.ring_mask = RENDER_RING | BSD_RING,
168 	GEN_DEFAULT_PIPEOFFSETS,
169 	CURSOR_OFFSETS,
170 };
171 
172 static const struct intel_device_info intel_pineview_info = {
173 	.gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .num_pipes = 2,
174 	.need_gfx_hws = 1, .has_hotplug = 1,
175 	.has_overlay = 1,
176 	.ring_mask = RENDER_RING,
177 	GEN_DEFAULT_PIPEOFFSETS,
178 	CURSOR_OFFSETS,
179 };
180 
181 static const struct intel_device_info intel_ironlake_d_info = {
182 	.gen = 5, .num_pipes = 2,
183 	.need_gfx_hws = 1, .has_hotplug = 1,
184 	.ring_mask = RENDER_RING | BSD_RING,
185 	GEN_DEFAULT_PIPEOFFSETS,
186 	CURSOR_OFFSETS,
187 };
188 
189 static const struct intel_device_info intel_ironlake_m_info = {
190 	.gen = 5, .is_mobile = 1, .num_pipes = 2,
191 	.need_gfx_hws = 1, .has_hotplug = 1,
192 	.has_fbc = 1,
193 	.ring_mask = RENDER_RING | BSD_RING,
194 	GEN_DEFAULT_PIPEOFFSETS,
195 	CURSOR_OFFSETS,
196 };
197 
198 static const struct intel_device_info intel_sandybridge_d_info = {
199 	.gen = 6, .num_pipes = 2,
200 	.need_gfx_hws = 1, .has_hotplug = 1,
201 	.has_fbc = 1,
202 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING,
203 	.has_llc = 1,
204 	GEN_DEFAULT_PIPEOFFSETS,
205 	CURSOR_OFFSETS,
206 };
207 
208 static const struct intel_device_info intel_sandybridge_m_info = {
209 	.gen = 6, .is_mobile = 1, .num_pipes = 2,
210 	.need_gfx_hws = 1, .has_hotplug = 1,
211 	.has_fbc = 1,
212 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING,
213 	.has_llc = 1,
214 	GEN_DEFAULT_PIPEOFFSETS,
215 	CURSOR_OFFSETS,
216 };
217 
218 #define GEN7_FEATURES  \
219 	.gen = 7, .num_pipes = 3, \
220 	.need_gfx_hws = 1, .has_hotplug = 1, \
221 	.has_fbc = 1, \
222 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
223 	.has_llc = 1, \
224 	GEN_DEFAULT_PIPEOFFSETS, \
225 	IVB_CURSOR_OFFSETS
226 
227 static const struct intel_device_info intel_ivybridge_d_info = {
228 	GEN7_FEATURES,
229 	.is_ivybridge = 1,
230 };
231 
232 static const struct intel_device_info intel_ivybridge_m_info = {
233 	GEN7_FEATURES,
234 	.is_ivybridge = 1,
235 	.is_mobile = 1,
236 };
237 
238 static const struct intel_device_info intel_ivybridge_q_info = {
239 	GEN7_FEATURES,
240 	.is_ivybridge = 1,
241 	.num_pipes = 0, /* legal, last one wins */
242 };
243 
244 #define VLV_FEATURES  \
245 	.gen = 7, .num_pipes = 2, \
246 	.need_gfx_hws = 1, .has_hotplug = 1, \
247 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
248 	.display_mmio_offset = VLV_DISPLAY_BASE, \
249 	GEN_DEFAULT_PIPEOFFSETS, \
250 	CURSOR_OFFSETS
251 
252 static const struct intel_device_info intel_valleyview_m_info = {
253 	VLV_FEATURES,
254 	.is_valleyview = 1,
255 	.is_mobile = 1,
256 };
257 
258 static const struct intel_device_info intel_valleyview_d_info = {
259 	VLV_FEATURES,
260 	.is_valleyview = 1,
261 };
262 
263 #define HSW_FEATURES  \
264 	GEN7_FEATURES, \
265 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING, \
266 	.has_ddi = 1, \
267 	.has_fpga_dbg = 1
268 
269 static const struct intel_device_info intel_haswell_d_info = {
270 	HSW_FEATURES,
271 	.is_haswell = 1,
272 };
273 
274 static const struct intel_device_info intel_haswell_m_info = {
275 	HSW_FEATURES,
276 	.is_haswell = 1,
277 	.is_mobile = 1,
278 };
279 
280 #define BDW_FEATURES \
281 	HSW_FEATURES, \
282 	BDW_COLORS
283 
284 static const struct intel_device_info intel_broadwell_d_info = {
285 	BDW_FEATURES,
286 	.gen = 8,
287 	.is_broadwell = 1,
288 };
289 
290 static const struct intel_device_info intel_broadwell_m_info = {
291 	BDW_FEATURES,
292 	.gen = 8, .is_mobile = 1,
293 	.is_broadwell = 1,
294 };
295 
296 static const struct intel_device_info intel_broadwell_gt3d_info = {
297 	BDW_FEATURES,
298 	.gen = 8,
299 	.is_broadwell = 1,
300 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
301 };
302 
303 static const struct intel_device_info intel_broadwell_gt3m_info = {
304 	BDW_FEATURES,
305 	.gen = 8, .is_mobile = 1,
306 	.is_broadwell = 1,
307 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
308 };
309 
310 static const struct intel_device_info intel_cherryview_info = {
311 	.gen = 8, .num_pipes = 3,
312 	.need_gfx_hws = 1, .has_hotplug = 1,
313 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
314 	.is_cherryview = 1,
315 	.display_mmio_offset = VLV_DISPLAY_BASE,
316 	GEN_CHV_PIPEOFFSETS,
317 	CURSOR_OFFSETS,
318 	CHV_COLORS,
319 };
320 
321 static const struct intel_device_info intel_skylake_info = {
322 	BDW_FEATURES,
323 	.is_skylake = 1,
324 	.gen = 9,
325 };
326 
327 static const struct intel_device_info intel_skylake_gt3_info = {
328 	BDW_FEATURES,
329 	.is_skylake = 1,
330 	.gen = 9,
331 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
332 };
333 
334 static const struct intel_device_info intel_broxton_info = {
335 	.is_broxton = 1,
336 	.gen = 9,
337 	.need_gfx_hws = 1, .has_hotplug = 1,
338 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
339 	.num_pipes = 3,
340 	.has_ddi = 1,
341 	.has_fpga_dbg = 1,
342 	.has_fbc = 1,
343 	.has_pooled_eu = 0,
344 	GEN_DEFAULT_PIPEOFFSETS,
345 	IVB_CURSOR_OFFSETS,
346 	BDW_COLORS,
347 };
348 
349 static const struct intel_device_info intel_kabylake_gt1_info = {
350 	BDW_FEATURES,
351 	.is_kabylake = 1,
352 	.gen = 9,
353 };
354 
355 static const struct intel_device_info intel_kabylake_gt2_info = {
356 	BDW_FEATURES,
357 	.is_kabylake = 1,
358 	.gen = 9,
359 };
360 
361 static const struct intel_device_info intel_kabylake_gt3_info = {
362 	BDW_FEATURES,
363 	.is_kabylake = 1,
364 	.gen = 9,
365 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
366 };
367 
368 static const struct intel_device_info intel_coffeelake_gt1_info = {
369 	BDW_FEATURES, \
370 	.is_kabylake = 1,
371 	.gen = 9,
372 };
373 
374 static const struct intel_device_info intel_coffeelake_gt2_info = {
375 	BDW_FEATURES, \
376 	.is_kabylake = 1,
377 	.gen = 9,
378 };
379 
380 static const struct intel_device_info intel_coffeelake_gt3_info = {
381 	BDW_FEATURES, \
382 	.is_kabylake = 1,
383 	.gen = 9,
384 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
385 };
386 
387 /*
388  * Make sure any device matches here are from most specific to most
389  * general.  For example, since the Quanta match is based on the subsystem
390  * and subvendor IDs, we need it to come before the more general IVB
391  * PCI ID matches, otherwise we'll use the wrong info struct above.
392  */
393 static const struct pci_device_id pciidlist[] = {
394 	INTEL_I830_IDS(&intel_i830_info),
395 	INTEL_I845G_IDS(&intel_845g_info),
396 	INTEL_I85X_IDS(&intel_i85x_info),
397 	INTEL_I865G_IDS(&intel_i865g_info),
398 	INTEL_I915G_IDS(&intel_i915g_info),
399 	INTEL_I915GM_IDS(&intel_i915gm_info),
400 	INTEL_I945G_IDS(&intel_i945g_info),
401 	INTEL_I945GM_IDS(&intel_i945gm_info),
402 	INTEL_I965G_IDS(&intel_i965g_info),
403 	INTEL_G33_IDS(&intel_g33_info),
404 	INTEL_I965GM_IDS(&intel_i965gm_info),
405 	INTEL_GM45_IDS(&intel_gm45_info),
406 	INTEL_G45_IDS(&intel_g45_info),
407 	INTEL_PINEVIEW_IDS(&intel_pineview_info),
408 	INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info),
409 	INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info),
410 	INTEL_SNB_D_IDS(&intel_sandybridge_d_info),
411 	INTEL_SNB_M_IDS(&intel_sandybridge_m_info),
412 	INTEL_IVB_Q_IDS(&intel_ivybridge_q_info), /* must be first IVB */
413 	INTEL_IVB_M_IDS(&intel_ivybridge_m_info),
414 	INTEL_IVB_D_IDS(&intel_ivybridge_d_info),
415 	INTEL_HSW_D_IDS(&intel_haswell_d_info),
416 	INTEL_HSW_M_IDS(&intel_haswell_m_info),
417 	INTEL_VLV_M_IDS(&intel_valleyview_m_info),
418 	INTEL_VLV_D_IDS(&intel_valleyview_d_info),
419 	INTEL_BDW_GT12M_IDS(&intel_broadwell_m_info),
420 	INTEL_BDW_GT12D_IDS(&intel_broadwell_d_info),
421 	INTEL_BDW_GT3M_IDS(&intel_broadwell_gt3m_info),
422 	INTEL_BDW_GT3D_IDS(&intel_broadwell_gt3d_info),
423 	INTEL_CHV_IDS(&intel_cherryview_info),
424 	INTEL_SKL_GT1_IDS(&intel_skylake_info),
425 	INTEL_SKL_GT2_IDS(&intel_skylake_info),
426 	INTEL_SKL_GT3_IDS(&intel_skylake_gt3_info),
427 	INTEL_SKL_GT4_IDS(&intel_skylake_gt3_info),
428 	INTEL_BXT_IDS(&intel_broxton_info),
429 	INTEL_KBL_GT1_IDS(&intel_kabylake_gt1_info),
430 	INTEL_KBL_GT2_IDS(&intel_kabylake_gt2_info),
431 	INTEL_KBL_GT3_IDS(&intel_kabylake_gt3_info),
432 	INTEL_KBL_GT4_IDS(&intel_kabylake_gt3_info),
433 	INTEL_AML_KBL_GT2_IDS(&intel_kabylake_gt2_info),
434 	INTEL_CFL_S_GT1_IDS(&intel_coffeelake_gt1_info),
435 	INTEL_CFL_S_GT2_IDS(&intel_coffeelake_gt2_info),
436 	INTEL_CFL_H_GT1_IDS(&intel_coffeelake_gt1_info),
437 	INTEL_CFL_H_GT2_IDS(&intel_coffeelake_gt2_info),
438 	INTEL_CFL_U_GT2_IDS(&intel_coffeelake_gt2_info),
439 	INTEL_CFL_U_GT3_IDS(&intel_coffeelake_gt3_info),
440 	INTEL_WHL_U_GT1_IDS(&intel_coffeelake_gt1_info),
441 	INTEL_WHL_U_GT2_IDS(&intel_coffeelake_gt2_info),
442 	INTEL_AML_CFL_GT2_IDS(&intel_coffeelake_gt2_info),
443 	INTEL_WHL_U_GT3_IDS(&intel_coffeelake_gt3_info),
444 	INTEL_CML_GT1_IDS(&intel_coffeelake_gt1_info),
445 	INTEL_CML_GT2_IDS(&intel_coffeelake_gt2_info),
446 	{0, 0, 0}
447 };
448 MODULE_DEVICE_TABLE(pci, pciidlist);
449 
450 extern int i915_driver_load(struct pci_dev *pdev,
451 			    const struct pci_device_id *ent);
452 
453 static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
454 {
455 	struct intel_device_info *intel_info =
456 		(struct intel_device_info *) ent->driver_data;
457 
458 	if (IS_PRELIMINARY_HW(intel_info) && !i915.preliminary_hw_support) {
459 		DRM_INFO("This hardware requires preliminary hardware support.\n"
460 			 "See CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT, and/or modparam preliminary_hw_support\n");
461 		return -ENODEV;
462 	}
463 
464 	/* Only bind to function 0 of the device. Early generations
465 	 * used function 1 as a placeholder for multi-head. This causes
466 	 * us confusion instead, especially on the systems where both
467 	 * functions have the same PCI-ID!
468 	 */
469 	if (PCI_FUNC(pdev->devfn))
470 		return -ENODEV;
471 
472 	/*
473 	 * apple-gmux is needed on dual GPU MacBook Pro
474 	 * to probe the panel if we're the inactive GPU.
475 	 */
476 	if (vga_switcheroo_client_probe_defer(pdev))
477 		return -EPROBE_DEFER;
478 
479 	return i915_driver_load(pdev, ent);
480 }
481 
482 extern void i915_driver_unload(struct drm_device *dev);
483 
484 static void i915_pci_remove(struct pci_dev *pdev)
485 {
486 	struct drm_device *dev = pci_get_drvdata(pdev);
487 
488 	i915_driver_unload(dev);
489 	drm_dev_unref(dev);
490 }
491 
492 extern const struct dev_pm_ops i915_pm_ops;
493 
494 static struct pci_driver i915_pci_driver = {
495 	.name = DRIVER_NAME,
496 	.id_table = pciidlist,
497 	.probe = i915_pci_probe,
498 	.remove = i915_pci_remove,
499 #if 0
500 	.driver.pm = &i915_pm_ops,
501 #endif
502 };
503 
504 static int __init i915_init(void)
505 {
506 	bool use_kms = true;
507 
508 	/*
509 	 * Enable KMS by default, unless explicitly overriden by
510 	 * either the i915.modeset prarameter or by the
511 	 * vga_text_mode_force boot option.
512 	 */
513 
514 	if (i915.modeset == 0)
515 		use_kms = false;
516 
517 	if (vgacon_text_force() && i915.modeset == -1)
518 		use_kms = false;
519 
520 	if (!use_kms) {
521 		/* Silently fail loading to not upset userspace. */
522 		DRM_DEBUG_DRIVER("KMS disabled.\n");
523 		return 0;
524 	}
525 
526 	return pci_register_driver(&i915_pci_driver);
527 }
528 
529 static void __exit i915_exit(void)
530 {
531 #if 0
532 	if (!i915_pci_driver.driver.owner)
533 		return;
534 #endif
535 
536 	pci_unregister_driver(&i915_pci_driver);
537 }
538 
539 module_init(i915_init);
540 module_exit(i915_exit);
541 
542 MODULE_AUTHOR("Tungsten Graphics, Inc.");
543 MODULE_AUTHOR("Intel Corporation");
544 
545 static int
546 i915_pci_probe_dfly(device_t kdev)
547 {
548 	int device, i = 0;
549 	const struct pci_device_id *ent;
550 	static struct pci_dev *pdev = NULL;
551 	static device_t bsddev;
552 
553 	if (pci_get_class(kdev) != PCIC_DISPLAY)
554 		return ENXIO;
555 
556 	if (pci_get_vendor(kdev) != PCI_VENDOR_ID_INTEL)
557 		return ENXIO;
558 
559 	device = pci_get_device(kdev);
560 
561 	for (i = 0; pciidlist[i].device != 0; i++) {
562 		if (pciidlist[i].device == device) {
563 			ent = &pciidlist[i];
564 			goto found;
565 		}
566 	}
567 
568 	return ENXIO;
569 found:
570 	if (!strcmp(device_get_name(kdev), "drmsub"))
571 		bsddev = device_get_parent(kdev);
572 	else
573 		bsddev = kdev;
574 
575 	drm_init_pdev(bsddev, &pdev);
576 
577 	/* Print the contents of pdev struct. */
578 	drm_print_pdev(pdev);
579 
580 	return i915_pci_probe(pdev, ent);
581 }
582 
583 static int i915_driver_attach(device_t kdev)
584 {
585 	return 0;
586 }
587 
588 static device_method_t i915_methods[] = {
589 	/* Device interface */
590 	DEVMETHOD(device_probe,		i915_pci_probe_dfly),
591 	DEVMETHOD(device_attach,	i915_driver_attach),
592 	DEVMETHOD(device_suspend,	i915_suspend_switcheroo),
593 	DEVMETHOD(device_resume,	i915_resume_switcheroo),
594 	DEVMETHOD(device_detach,	drm_release),
595 	DEVMETHOD_END
596 };
597 
598 static driver_t i915_driver = {
599 	"drm",
600 	i915_methods,
601 	sizeof(struct drm_softc)
602 };
603 
604 extern devclass_t drm_devclass;
605 
606 DRIVER_MODULE_ORDERED(i915, vgapci, i915_driver, drm_devclass, NULL, NULL, SI_ORDER_ANY);
607 MODULE_DEPEND(i915, drm, 1, 1, 1);
608 #ifdef CONFIG_ACPI
609 MODULE_DEPEND(i915, acpi, 1, 1, 1);
610 #endif
611