i915_drv.c revision 1.9 1 /* $NetBSD: i915_drv.c,v 1.9 2018/08/27 07:03:25 riastradh Exp $ */
2
3 /* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*-
4 */
5 /*
6 *
7 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
8 * All Rights Reserved.
9 *
10 * Permission is hereby granted, free of charge, to any person obtaining a
11 * copy of this software and associated documentation files (the
12 * "Software"), to deal in the Software without restriction, including
13 * without limitation the rights to use, copy, modify, merge, publish,
14 * distribute, sub license, and/or sell copies of the Software, and to
15 * permit persons to whom the Software is furnished to do so, subject to
16 * the following conditions:
17 *
18 * The above copyright notice and this permission notice (including the
19 * next paragraph) shall be included in all copies or substantial portions
20 * of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
23 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
25 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
26 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
27 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
28 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 *
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: i915_drv.c,v 1.9 2018/08/27 07:03:25 riastradh Exp $");
34
35 #include <linux/device.h>
36 #include <linux/acpi.h>
37 #include <linux/moduleparam.h>
38 #include <linux/time.h>
39 #include <drm/drmP.h>
40 #include <drm/i915_drm.h>
41 #include "i915_drv.h"
42 #include "i915_trace.h"
43 #include "intel_drv.h"
44
45 #include <linux/console.h>
46 #include <linux/module.h>
47 #include <linux/pm_runtime.h>
48 #include <drm/drm_crtc_helper.h>
49
50 static struct drm_driver driver;
51
52 #ifdef __NetBSD__
53 /* XXX Kludge to expose this to NetBSD driver attachment goop. */
54 struct drm_driver *const i915_drm_driver = &driver;
55 #endif
56
57 #define GEN_DEFAULT_PIPEOFFSETS \
58 .pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
59 PIPE_C_OFFSET, PIPE_EDP_OFFSET }, \
60 .trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
61 TRANSCODER_C_OFFSET, TRANSCODER_EDP_OFFSET }, \
62 .palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET }
63
64 #define GEN_CHV_PIPEOFFSETS \
65 .pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
66 CHV_PIPE_C_OFFSET }, \
67 .trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
68 CHV_TRANSCODER_C_OFFSET, }, \
69 .palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET, \
70 CHV_PALETTE_C_OFFSET }
71
72 #define CURSOR_OFFSETS \
73 .cursor_offsets = { CURSOR_A_OFFSET, CURSOR_B_OFFSET, CHV_CURSOR_C_OFFSET }
74
75 #define IVB_CURSOR_OFFSETS \
76 .cursor_offsets = { CURSOR_A_OFFSET, IVB_CURSOR_B_OFFSET, IVB_CURSOR_C_OFFSET }
77
78 static const struct intel_device_info intel_i830_info = {
79 .gen = 2, .is_mobile = 1, .cursor_needs_physical = 1, .num_pipes = 2,
80 .has_overlay = 1, .overlay_needs_physical = 1,
81 .ring_mask = RENDER_RING,
82 GEN_DEFAULT_PIPEOFFSETS,
83 CURSOR_OFFSETS,
84 };
85
86 static const struct intel_device_info intel_845g_info = {
87 .gen = 2, .num_pipes = 1,
88 .has_overlay = 1, .overlay_needs_physical = 1,
89 .ring_mask = RENDER_RING,
90 GEN_DEFAULT_PIPEOFFSETS,
91 CURSOR_OFFSETS,
92 };
93
94 static const struct intel_device_info intel_i85x_info = {
95 .gen = 2, .is_i85x = 1, .is_mobile = 1, .num_pipes = 2,
96 .cursor_needs_physical = 1,
97 .has_overlay = 1, .overlay_needs_physical = 1,
98 .has_fbc = 1,
99 .ring_mask = RENDER_RING,
100 GEN_DEFAULT_PIPEOFFSETS,
101 CURSOR_OFFSETS,
102 };
103
104 static const struct intel_device_info intel_i865g_info = {
105 .gen = 2, .num_pipes = 1,
106 .has_overlay = 1, .overlay_needs_physical = 1,
107 .ring_mask = RENDER_RING,
108 GEN_DEFAULT_PIPEOFFSETS,
109 CURSOR_OFFSETS,
110 };
111
112 static const struct intel_device_info intel_i915g_info = {
113 .gen = 3, .is_i915g = 1, .cursor_needs_physical = 1, .num_pipes = 2,
114 .has_overlay = 1, .overlay_needs_physical = 1,
115 .ring_mask = RENDER_RING,
116 GEN_DEFAULT_PIPEOFFSETS,
117 CURSOR_OFFSETS,
118 };
119 static const struct intel_device_info intel_i915gm_info = {
120 .gen = 3, .is_mobile = 1, .num_pipes = 2,
121 .cursor_needs_physical = 1,
122 .has_overlay = 1, .overlay_needs_physical = 1,
123 .supports_tv = 1,
124 .has_fbc = 1,
125 .ring_mask = RENDER_RING,
126 GEN_DEFAULT_PIPEOFFSETS,
127 CURSOR_OFFSETS,
128 };
129 static const struct intel_device_info intel_i945g_info = {
130 .gen = 3, .has_hotplug = 1, .cursor_needs_physical = 1, .num_pipes = 2,
131 .has_overlay = 1, .overlay_needs_physical = 1,
132 .ring_mask = RENDER_RING,
133 GEN_DEFAULT_PIPEOFFSETS,
134 CURSOR_OFFSETS,
135 };
136 static const struct intel_device_info intel_i945gm_info = {
137 .gen = 3, .is_i945gm = 1, .is_mobile = 1, .num_pipes = 2,
138 .has_hotplug = 1, .cursor_needs_physical = 1,
139 .has_overlay = 1, .overlay_needs_physical = 1,
140 .supports_tv = 1,
141 .has_fbc = 1,
142 .ring_mask = RENDER_RING,
143 GEN_DEFAULT_PIPEOFFSETS,
144 CURSOR_OFFSETS,
145 };
146
147 static const struct intel_device_info intel_i965g_info = {
148 .gen = 4, .is_broadwater = 1, .num_pipes = 2,
149 .has_hotplug = 1,
150 .has_overlay = 1,
151 .ring_mask = RENDER_RING,
152 GEN_DEFAULT_PIPEOFFSETS,
153 CURSOR_OFFSETS,
154 };
155
156 static const struct intel_device_info intel_i965gm_info = {
157 .gen = 4, .is_crestline = 1, .num_pipes = 2,
158 .is_mobile = 1, .has_fbc = 1, .has_hotplug = 1,
159 .has_overlay = 1,
160 .supports_tv = 1,
161 .ring_mask = RENDER_RING,
162 GEN_DEFAULT_PIPEOFFSETS,
163 CURSOR_OFFSETS,
164 };
165
166 static const struct intel_device_info intel_g33_info = {
167 .gen = 3, .is_g33 = 1, .num_pipes = 2,
168 .need_gfx_hws = 1, .has_hotplug = 1,
169 .has_overlay = 1,
170 .ring_mask = RENDER_RING,
171 GEN_DEFAULT_PIPEOFFSETS,
172 CURSOR_OFFSETS,
173 };
174
175 static const struct intel_device_info intel_g45_info = {
176 .gen = 4, .is_g4x = 1, .need_gfx_hws = 1, .num_pipes = 2,
177 .has_pipe_cxsr = 1, .has_hotplug = 1,
178 .ring_mask = RENDER_RING | BSD_RING,
179 GEN_DEFAULT_PIPEOFFSETS,
180 CURSOR_OFFSETS,
181 };
182
183 static const struct intel_device_info intel_gm45_info = {
184 .gen = 4, .is_g4x = 1, .num_pipes = 2,
185 .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1,
186 .has_pipe_cxsr = 1, .has_hotplug = 1,
187 .supports_tv = 1,
188 .ring_mask = RENDER_RING | BSD_RING,
189 GEN_DEFAULT_PIPEOFFSETS,
190 CURSOR_OFFSETS,
191 };
192
193 static const struct intel_device_info intel_pineview_info = {
194 .gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .num_pipes = 2,
195 .need_gfx_hws = 1, .has_hotplug = 1,
196 .has_overlay = 1,
197 GEN_DEFAULT_PIPEOFFSETS,
198 CURSOR_OFFSETS,
199 };
200
201 static const struct intel_device_info intel_ironlake_d_info = {
202 .gen = 5, .num_pipes = 2,
203 .need_gfx_hws = 1, .has_hotplug = 1,
204 .ring_mask = RENDER_RING | BSD_RING,
205 GEN_DEFAULT_PIPEOFFSETS,
206 CURSOR_OFFSETS,
207 };
208
209 static const struct intel_device_info intel_ironlake_m_info = {
210 .gen = 5, .is_mobile = 1, .num_pipes = 2,
211 .need_gfx_hws = 1, .has_hotplug = 1,
212 .has_fbc = 1,
213 .ring_mask = RENDER_RING | BSD_RING,
214 GEN_DEFAULT_PIPEOFFSETS,
215 CURSOR_OFFSETS,
216 };
217
218 static const struct intel_device_info intel_sandybridge_d_info = {
219 .gen = 6, .num_pipes = 2,
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 CURSOR_OFFSETS,
226 };
227
228 static const struct intel_device_info intel_sandybridge_m_info = {
229 .gen = 6, .is_mobile = 1, .num_pipes = 2,
230 .need_gfx_hws = 1, .has_hotplug = 1,
231 .has_fbc = 1,
232 .ring_mask = RENDER_RING | BSD_RING | BLT_RING,
233 .has_llc = 1,
234 GEN_DEFAULT_PIPEOFFSETS,
235 CURSOR_OFFSETS,
236 };
237
238 #define GEN7_FEATURES \
239 .gen = 7, .num_pipes = 3, \
240 .need_gfx_hws = 1, .has_hotplug = 1, \
241 .has_fbc = 1, \
242 .ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
243 .has_llc = 1
244
245 static const struct intel_device_info intel_ivybridge_d_info = {
246 GEN7_FEATURES,
247 .is_ivybridge = 1,
248 GEN_DEFAULT_PIPEOFFSETS,
249 IVB_CURSOR_OFFSETS,
250 };
251
252 static const struct intel_device_info intel_ivybridge_m_info = {
253 GEN7_FEATURES,
254 .is_ivybridge = 1,
255 .is_mobile = 1,
256 GEN_DEFAULT_PIPEOFFSETS,
257 IVB_CURSOR_OFFSETS,
258 };
259
260 static const struct intel_device_info intel_ivybridge_q_info = {
261 GEN7_FEATURES,
262 .is_ivybridge = 1,
263 .num_pipes = 0, /* legal, last one wins */
264 GEN_DEFAULT_PIPEOFFSETS,
265 IVB_CURSOR_OFFSETS,
266 };
267
268 static const struct intel_device_info intel_valleyview_m_info = {
269 GEN7_FEATURES,
270 .is_mobile = 1,
271 .num_pipes = 2,
272 .is_valleyview = 1,
273 .display_mmio_offset = VLV_DISPLAY_BASE,
274 .has_fbc = 0, /* legal, last one wins */
275 .has_llc = 0, /* legal, last one wins */
276 GEN_DEFAULT_PIPEOFFSETS,
277 CURSOR_OFFSETS,
278 };
279
280 static const struct intel_device_info intel_valleyview_d_info = {
281 GEN7_FEATURES,
282 .num_pipes = 2,
283 .is_valleyview = 1,
284 .display_mmio_offset = VLV_DISPLAY_BASE,
285 .has_fbc = 0, /* legal, last one wins */
286 .has_llc = 0, /* legal, last one wins */
287 GEN_DEFAULT_PIPEOFFSETS,
288 CURSOR_OFFSETS,
289 };
290
291 static const struct intel_device_info intel_haswell_d_info = {
292 GEN7_FEATURES,
293 .is_haswell = 1,
294 .has_ddi = 1,
295 .has_fpga_dbg = 1,
296 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
297 GEN_DEFAULT_PIPEOFFSETS,
298 IVB_CURSOR_OFFSETS,
299 };
300
301 static const struct intel_device_info intel_haswell_m_info = {
302 GEN7_FEATURES,
303 .is_haswell = 1,
304 .is_mobile = 1,
305 .has_ddi = 1,
306 .has_fpga_dbg = 1,
307 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
308 GEN_DEFAULT_PIPEOFFSETS,
309 IVB_CURSOR_OFFSETS,
310 };
311
312 static const struct intel_device_info intel_broadwell_d_info = {
313 .gen = 8, .num_pipes = 3,
314 .need_gfx_hws = 1, .has_hotplug = 1,
315 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
316 .has_llc = 1,
317 .has_ddi = 1,
318 .has_fpga_dbg = 1,
319 .has_fbc = 1,
320 GEN_DEFAULT_PIPEOFFSETS,
321 IVB_CURSOR_OFFSETS,
322 };
323
324 static const struct intel_device_info intel_broadwell_m_info = {
325 .gen = 8, .is_mobile = 1, .num_pipes = 3,
326 .need_gfx_hws = 1, .has_hotplug = 1,
327 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
328 .has_llc = 1,
329 .has_ddi = 1,
330 .has_fpga_dbg = 1,
331 .has_fbc = 1,
332 GEN_DEFAULT_PIPEOFFSETS,
333 IVB_CURSOR_OFFSETS,
334 };
335
336 static const struct intel_device_info intel_broadwell_gt3d_info = {
337 .gen = 8, .num_pipes = 3,
338 .need_gfx_hws = 1, .has_hotplug = 1,
339 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
340 .has_llc = 1,
341 .has_ddi = 1,
342 .has_fpga_dbg = 1,
343 .has_fbc = 1,
344 GEN_DEFAULT_PIPEOFFSETS,
345 IVB_CURSOR_OFFSETS,
346 };
347
348 static const struct intel_device_info intel_broadwell_gt3m_info = {
349 .gen = 8, .is_mobile = 1, .num_pipes = 3,
350 .need_gfx_hws = 1, .has_hotplug = 1,
351 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
352 .has_llc = 1,
353 .has_ddi = 1,
354 .has_fpga_dbg = 1,
355 .has_fbc = 1,
356 GEN_DEFAULT_PIPEOFFSETS,
357 IVB_CURSOR_OFFSETS,
358 };
359
360 static const struct intel_device_info intel_cherryview_info = {
361 .gen = 8, .num_pipes = 3,
362 .need_gfx_hws = 1, .has_hotplug = 1,
363 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
364 .is_valleyview = 1,
365 .display_mmio_offset = VLV_DISPLAY_BASE,
366 GEN_CHV_PIPEOFFSETS,
367 CURSOR_OFFSETS,
368 };
369
370 static const struct intel_device_info intel_skylake_info = {
371 .is_skylake = 1,
372 .gen = 9, .num_pipes = 3,
373 .need_gfx_hws = 1, .has_hotplug = 1,
374 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
375 .has_llc = 1,
376 .has_ddi = 1,
377 .has_fpga_dbg = 1,
378 .has_fbc = 1,
379 GEN_DEFAULT_PIPEOFFSETS,
380 IVB_CURSOR_OFFSETS,
381 };
382
383 static const struct intel_device_info intel_skylake_gt3_info = {
384 .is_skylake = 1,
385 .gen = 9, .num_pipes = 3,
386 .need_gfx_hws = 1, .has_hotplug = 1,
387 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
388 .has_llc = 1,
389 .has_ddi = 1,
390 .has_fpga_dbg = 1,
391 .has_fbc = 1,
392 GEN_DEFAULT_PIPEOFFSETS,
393 IVB_CURSOR_OFFSETS,
394 };
395
396 static const struct intel_device_info intel_broxton_info = {
397 .is_preliminary = 1,
398 .gen = 9,
399 .need_gfx_hws = 1, .has_hotplug = 1,
400 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
401 .num_pipes = 3,
402 .has_ddi = 1,
403 .has_fpga_dbg = 1,
404 .has_fbc = 1,
405 GEN_DEFAULT_PIPEOFFSETS,
406 IVB_CURSOR_OFFSETS,
407 };
408
409 /*
410 * Make sure any device matches here are from most specific to most
411 * general. For example, since the Quanta match is based on the subsystem
412 * and subvendor IDs, we need it to come before the more general IVB
413 * PCI ID matches, otherwise we'll use the wrong info struct above.
414 */
415 #define INTEL_PCI_IDS \
416 INTEL_I830_IDS(&intel_i830_info), \
417 INTEL_I845G_IDS(&intel_845g_info), \
418 INTEL_I85X_IDS(&intel_i85x_info), \
419 INTEL_I865G_IDS(&intel_i865g_info), \
420 INTEL_I915G_IDS(&intel_i915g_info), \
421 INTEL_I915GM_IDS(&intel_i915gm_info), \
422 INTEL_I945G_IDS(&intel_i945g_info), \
423 INTEL_I945GM_IDS(&intel_i945gm_info), \
424 INTEL_I965G_IDS(&intel_i965g_info), \
425 INTEL_G33_IDS(&intel_g33_info), \
426 INTEL_I965GM_IDS(&intel_i965gm_info), \
427 INTEL_GM45_IDS(&intel_gm45_info), \
428 INTEL_G45_IDS(&intel_g45_info), \
429 INTEL_PINEVIEW_IDS(&intel_pineview_info), \
430 INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info), \
431 INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info), \
432 INTEL_SNB_D_IDS(&intel_sandybridge_d_info), \
433 INTEL_SNB_M_IDS(&intel_sandybridge_m_info), \
434 INTEL_IVB_Q_IDS(&intel_ivybridge_q_info), /* must be first IVB */ \
435 INTEL_IVB_M_IDS(&intel_ivybridge_m_info), \
436 INTEL_IVB_D_IDS(&intel_ivybridge_d_info), \
437 INTEL_HSW_D_IDS(&intel_haswell_d_info), \
438 INTEL_HSW_M_IDS(&intel_haswell_m_info), \
439 INTEL_VLV_M_IDS(&intel_valleyview_m_info), \
440 INTEL_VLV_D_IDS(&intel_valleyview_d_info), \
441 INTEL_BDW_GT12M_IDS(&intel_broadwell_m_info), \
442 INTEL_BDW_GT12D_IDS(&intel_broadwell_d_info), \
443 INTEL_BDW_GT3M_IDS(&intel_broadwell_gt3m_info), \
444 INTEL_BDW_GT3D_IDS(&intel_broadwell_gt3d_info), \
445 INTEL_CHV_IDS(&intel_cherryview_info), \
446 INTEL_SKL_GT1_IDS(&intel_skylake_info), \
447 INTEL_SKL_GT2_IDS(&intel_skylake_info), \
448 INTEL_SKL_GT3_IDS(&intel_skylake_gt3_info), \
449 INTEL_BXT_IDS(&intel_broxton_info)
450
451 static const struct pci_device_id pciidlist[] = { /* aka */
452 INTEL_PCI_IDS,
453 {0, 0, 0, 0, 0, 0, 0}
454 };
455
456 MODULE_DEVICE_TABLE(pci, pciidlist);
457
458 static enum intel_pch intel_virt_detect_pch(struct drm_device *dev)
459 {
460 enum intel_pch ret = PCH_NOP;
461
462 /*
463 * In a virtualized passthrough environment we can be in a
464 * setup where the ISA bridge is not able to be passed through.
465 * In this case, a south bridge can be emulated and we have to
466 * make an educated guess as to which PCH is really there.
467 */
468
469 if (IS_GEN5(dev)) {
470 ret = PCH_IBX;
471 DRM_DEBUG_KMS("Assuming Ibex Peak PCH\n");
472 } else if (IS_GEN6(dev) || IS_IVYBRIDGE(dev)) {
473 ret = PCH_CPT;
474 DRM_DEBUG_KMS("Assuming CouarPoint PCH\n");
475 } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
476 ret = PCH_LPT;
477 DRM_DEBUG_KMS("Assuming LynxPoint PCH\n");
478 } else if (IS_SKYLAKE(dev)) {
479 ret = PCH_SPT;
480 DRM_DEBUG_KMS("Assuming SunrisePoint PCH\n");
481 }
482
483 return ret;
484 }
485
486 #ifdef __NetBSD__
487 /* XXX Kludge to expose this to NetBSD driver attachment goop. */
488 const struct pci_device_id *const i915_device_ids = pciidlist;
489 const size_t i915_n_device_ids = __arraycount(pciidlist);
490 #endif
491
492 void intel_detect_pch(struct drm_device *dev)
493 {
494 struct drm_i915_private *dev_priv = dev->dev_private;
495 struct pci_dev *pch = NULL;
496
497 /* In all current cases, num_pipes is equivalent to the PCH_NOP setting
498 * (which really amounts to a PCH but no South Display).
499 */
500 if (INTEL_INFO(dev)->num_pipes == 0) {
501 dev_priv->pch_type = PCH_NOP;
502 return;
503 }
504
505 /*
506 * The reason to probe ISA bridge instead of Dev31:Fun0 is to
507 * make graphics device passthrough work easy for VMM, that only
508 * need to expose ISA bridge to let driver know the real hardware
509 * underneath. This is a requirement from virtualization team.
510 *
511 * In some virtualized environments (e.g. XEN), there is irrelevant
512 * ISA bridge in the system. To work reliably, we should scan trhough
513 * all the ISA bridge devices and check for the first match, instead
514 * of only checking the first one.
515 */
516 while ((pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, pch))) {
517 if (pch->vendor == PCI_VENDOR_ID_INTEL) {
518 unsigned short id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
519 dev_priv->pch_id = id;
520
521 if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) {
522 dev_priv->pch_type = PCH_IBX;
523 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
524 WARN_ON(!IS_GEN5(dev));
525 } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
526 dev_priv->pch_type = PCH_CPT;
527 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
528 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
529 } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) {
530 /* PantherPoint is CPT compatible */
531 dev_priv->pch_type = PCH_CPT;
532 DRM_DEBUG_KMS("Found PantherPoint PCH\n");
533 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
534 } else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
535 dev_priv->pch_type = PCH_LPT;
536 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
537 WARN_ON(!IS_HASWELL(dev) && !IS_BROADWELL(dev));
538 WARN_ON(IS_HSW_ULT(dev) || IS_BDW_ULT(dev));
539 } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
540 dev_priv->pch_type = PCH_LPT;
541 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
542 WARN_ON(!IS_HASWELL(dev) && !IS_BROADWELL(dev));
543 WARN_ON(!IS_HSW_ULT(dev) && !IS_BDW_ULT(dev));
544 } else if (id == INTEL_PCH_SPT_DEVICE_ID_TYPE) {
545 dev_priv->pch_type = PCH_SPT;
546 DRM_DEBUG_KMS("Found SunrisePoint PCH\n");
547 WARN_ON(!IS_SKYLAKE(dev));
548 } else if (id == INTEL_PCH_SPT_LP_DEVICE_ID_TYPE) {
549 dev_priv->pch_type = PCH_SPT;
550 DRM_DEBUG_KMS("Found SunrisePoint LP PCH\n");
551 WARN_ON(!IS_SKYLAKE(dev));
552 } else if ((id == INTEL_PCH_P2X_DEVICE_ID_TYPE) ||
553 ((id == INTEL_PCH_QEMU_DEVICE_ID_TYPE) &&
554 pch->subsystem_vendor == 0x1af4 &&
555 pch->subsystem_device == 0x1100)) {
556 dev_priv->pch_type = intel_virt_detect_pch(dev);
557 } else
558 continue;
559
560 break;
561 }
562 }
563 if (!pch)
564 DRM_DEBUG_KMS("No PCH found.\n");
565
566 pci_dev_put(pch);
567 }
568
569 bool i915_semaphore_is_enabled(struct drm_device *dev)
570 {
571 if (INTEL_INFO(dev)->gen < 6)
572 return false;
573
574 if (i915.semaphores >= 0)
575 return i915.semaphores;
576
577 /* TODO: make semaphores and Execlists play nicely together */
578 if (i915.enable_execlists)
579 return false;
580
581 /* Until we get further testing... */
582 if (IS_GEN8(dev))
583 return false;
584
585 #ifdef CONFIG_INTEL_IOMMU
586 /* Enable semaphores on SNB when IO remapping is off */
587 if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped)
588 return false;
589 #endif
590
591 return true;
592 }
593
594 void i915_firmware_load_error_print(const char *fw_path, int err)
595 {
596 DRM_ERROR("failed to load firmware %s (%d)\n", fw_path, err);
597
598 /*
599 * If the reason is not known assume -ENOENT since that's the most
600 * usual failure mode.
601 */
602 if (!err)
603 err = -ENOENT;
604
605 if (!(IS_BUILTIN(CONFIG_DRM_I915) && err == -ENOENT))
606 return;
607
608 DRM_ERROR(
609 "The driver is built-in, so to load the firmware you need to\n"
610 "include it either in the kernel (see CONFIG_EXTRA_FIRMWARE) or\n"
611 "in your initrd/initramfs image.\n");
612 }
613
614 static void intel_suspend_encoders(struct drm_i915_private *dev_priv)
615 {
616 struct drm_device *dev = dev_priv->dev;
617 struct drm_encoder *encoder;
618
619 drm_modeset_lock_all(dev);
620 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
621 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
622
623 if (intel_encoder->suspend)
624 intel_encoder->suspend(intel_encoder);
625 }
626 drm_modeset_unlock_all(dev);
627 }
628
629 static int intel_suspend_complete(struct drm_i915_private *dev_priv);
630 static int vlv_resume_prepare(struct drm_i915_private *dev_priv,
631 bool rpm_resume);
632 static int skl_resume_prepare(struct drm_i915_private *dev_priv);
633 static int bxt_resume_prepare(struct drm_i915_private *dev_priv);
634
635
636 static int i915_drm_suspend(struct drm_device *dev)
637 {
638 struct drm_i915_private *dev_priv = dev->dev_private;
639 pci_power_t opregion_target_state;
640 int error;
641
642 /* ignore lid events during suspend */
643 mutex_lock(&dev_priv->modeset_restore_lock);
644 dev_priv->modeset_restore = MODESET_SUSPENDED;
645 mutex_unlock(&dev_priv->modeset_restore_lock);
646
647 /* We do a lot of poking in a lot of registers, make sure they work
648 * properly. */
649 intel_display_set_init_power(dev_priv, true);
650
651 drm_kms_helper_poll_disable(dev);
652
653 #ifndef __NetBSD__ /* pmf handles this for us. */
654 pci_save_state(dev->pdev);
655 #endif
656
657 error = i915_gem_suspend(dev);
658 if (error) {
659 #ifdef __NetBSD__
660 dev_err(pci_dev_dev(dev->pdev),
661 "GEM idle failed, resume might fail\n");
662 #else
663 dev_err(&dev->pdev->dev,
664 "GEM idle failed, resume might fail\n");
665 #endif
666 return error;
667 }
668
669 intel_guc_suspend(dev);
670
671 intel_suspend_gt_powersave(dev);
672
673 /*
674 * Disable CRTCs directly since we want to preserve sw state
675 * for _thaw. Also, power gate the CRTC power wells.
676 */
677 drm_modeset_lock_all(dev);
678 intel_display_suspend(dev);
679 drm_modeset_unlock_all(dev);
680
681 intel_dp_mst_suspend(dev);
682
683 intel_runtime_pm_disable_interrupts(dev_priv);
684 intel_hpd_cancel_work(dev_priv);
685
686 intel_suspend_encoders(dev_priv);
687
688 intel_suspend_hw(dev);
689
690 i915_gem_suspend_gtt_mappings(dev);
691
692 i915_save_state(dev);
693
694 opregion_target_state = PCI_D3cold;
695 #if IS_ENABLED(CONFIG_ACPI_SLEEP)
696 if (acpi_target_system_state() < ACPI_STATE_S3)
697 opregion_target_state = PCI_D1;
698 #endif
699 intel_opregion_notify_adapter(dev, opregion_target_state);
700
701 intel_uncore_forcewake_reset(dev, false);
702 intel_opregion_fini(dev);
703
704 #ifndef __NetBSD__ /* XXX fb */
705 intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true);
706 #endif
707
708 dev_priv->suspend_count++;
709
710 intel_display_set_init_power(dev_priv, false);
711
712 return 0;
713 }
714
715 static int i915_drm_suspend_late(struct drm_device *drm_dev, bool hibernation)
716 {
717 struct drm_i915_private *dev_priv = drm_dev->dev_private;
718 int ret;
719
720 ret = intel_suspend_complete(dev_priv);
721
722 if (ret) {
723 DRM_ERROR("Suspend complete failed: %d\n", ret);
724
725 return ret;
726 }
727
728 pci_disable_device(drm_dev->pdev);
729 /*
730 * During hibernation on some platforms the BIOS may try to access
731 * the device even though it's already in D3 and hang the machine. So
732 * leave the device in D0 on those platforms and hope the BIOS will
733 * power down the device properly. The issue was seen on multiple old
734 * GENs with different BIOS vendors, so having an explicit blacklist
735 * is inpractical; apply the workaround on everything pre GEN6. The
736 * platforms where the issue was seen:
737 * Lenovo Thinkpad X301, X61s, X60, T60, X41
738 * Fujitsu FSC S7110
739 * Acer Aspire 1830T
740 */
741 if (!(hibernation && INTEL_INFO(dev_priv)->gen < 6))
742 pci_set_power_state(drm_dev->pdev, PCI_D3hot);
743
744 return 0;
745 }
746
747 int i915_suspend_switcheroo(struct drm_device *dev, pm_message_t state)
748 {
749 int error;
750
751 if (!dev || !dev->dev_private) {
752 DRM_ERROR("dev: %p\n", dev);
753 DRM_ERROR("DRM not initialized, aborting suspend.\n");
754 return -ENODEV;
755 }
756
757 if (WARN_ON_ONCE(state.event != PM_EVENT_SUSPEND &&
758 state.event != PM_EVENT_FREEZE))
759 return -EINVAL;
760
761 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
762 return 0;
763
764 error = i915_drm_suspend(dev);
765 if (error)
766 return error;
767
768 return i915_drm_suspend_late(dev, false);
769 }
770
771 static int i915_drm_resume(struct drm_device *dev)
772 {
773 struct drm_i915_private *dev_priv = dev->dev_private;
774
775 mutex_lock(&dev->struct_mutex);
776 i915_gem_restore_gtt_mappings(dev);
777 mutex_unlock(&dev->struct_mutex);
778
779 i915_restore_state(dev);
780 intel_opregion_setup(dev);
781
782 intel_init_pch_refclk(dev);
783 drm_mode_config_reset(dev);
784
785 /*
786 * Interrupts have to be enabled before any batches are run. If not the
787 * GPU will hang. i915_gem_init_hw() will initiate batches to
788 * update/restore the context.
789 *
790 * Modeset enabling in intel_modeset_init_hw() also needs working
791 * interrupts.
792 */
793 intel_runtime_pm_enable_interrupts(dev_priv);
794
795 mutex_lock(&dev->struct_mutex);
796 if (i915_gem_init_hw(dev)) {
797 DRM_ERROR("failed to re-initialize GPU, declaring wedged!\n");
798 atomic_or(I915_WEDGED, &dev_priv->gpu_error.reset_counter);
799 }
800 mutex_unlock(&dev->struct_mutex);
801
802 intel_guc_resume(dev);
803
804 intel_modeset_init_hw(dev);
805
806 spin_lock_irq(&dev_priv->irq_lock);
807 if (dev_priv->display.hpd_irq_setup)
808 dev_priv->display.hpd_irq_setup(dev);
809 spin_unlock_irq(&dev_priv->irq_lock);
810
811 drm_modeset_lock_all(dev);
812 intel_display_resume(dev);
813 drm_modeset_unlock_all(dev);
814
815 intel_dp_mst_resume(dev);
816
817 /*
818 * ... but also need to make sure that hotplug processing
819 * doesn't cause havoc. Like in the driver load code we don't
820 * bother with the tiny race here where we might loose hotplug
821 * notifications.
822 * */
823 intel_hpd_init(dev_priv);
824 /* Config may have changed between suspend and resume */
825 drm_helper_hpd_irq_event(dev);
826
827 intel_opregion_init(dev);
828
829 #ifndef __NetBSD__ /* XXX fb */
830 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false);
831 #endif
832
833 mutex_lock(&dev_priv->modeset_restore_lock);
834 dev_priv->modeset_restore = MODESET_DONE;
835 mutex_unlock(&dev_priv->modeset_restore_lock);
836
837 intel_opregion_notify_adapter(dev, PCI_D0);
838
839 drm_kms_helper_poll_enable(dev);
840
841 return 0;
842 }
843
844 static int i915_drm_resume_early(struct drm_device *dev)
845 {
846 struct drm_i915_private *dev_priv = dev->dev_private;
847 int ret = 0;
848
849 #ifndef __NetBSD__ /* pmf handles this for us. */
850 /*
851 * We have a resume ordering issue with the snd-hda driver also
852 * requiring our device to be power up. Due to the lack of a
853 * parent/child relationship we currently solve this with an early
854 * resume hook.
855 *
856 * FIXME: This should be solved with a special hdmi sink device or
857 * similar so that power domains can be employed.
858 */
859 if (pci_enable_device(dev->pdev))
860 return -EIO;
861 #endif
862
863 /* XXX pmf probably handles this for us too. */
864 pci_set_master(dev->pdev);
865
866 if (IS_VALLEYVIEW(dev_priv))
867 ret = vlv_resume_prepare(dev_priv, false);
868 if (ret)
869 DRM_ERROR("Resume prepare failed: %d, continuing anyway\n",
870 ret);
871
872 intel_uncore_early_sanitize(dev, true);
873
874 if (IS_BROXTON(dev))
875 ret = bxt_resume_prepare(dev_priv);
876 else if (IS_SKYLAKE(dev_priv))
877 ret = skl_resume_prepare(dev_priv);
878 else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
879 hsw_disable_pc8(dev_priv);
880
881 intel_uncore_sanitize(dev);
882 intel_power_domains_init_hw(dev_priv);
883
884 return ret;
885 }
886
887 int i915_resume_switcheroo(struct drm_device *dev)
888 {
889 int ret;
890
891 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
892 return 0;
893
894 ret = i915_drm_resume_early(dev);
895 if (ret)
896 return ret;
897
898 return i915_drm_resume(dev);
899 }
900
901 /**
902 * i915_reset - reset chip after a hang
903 * @dev: drm device to reset
904 *
905 * Reset the chip. Useful if a hang is detected. Returns zero on successful
906 * reset or otherwise an error code.
907 *
908 * Procedure is fairly simple:
909 * - reset the chip using the reset reg
910 * - re-init context state
911 * - re-init hardware status page
912 * - re-init ring buffer
913 * - re-init interrupt state
914 * - re-init display
915 */
916 int i915_reset(struct drm_device *dev)
917 {
918 struct drm_i915_private *dev_priv = dev->dev_private;
919 bool simulated;
920 int ret;
921
922 intel_reset_gt_powersave(dev);
923
924 mutex_lock(&dev->struct_mutex);
925
926 i915_gem_reset(dev);
927
928 simulated = dev_priv->gpu_error.stop_rings != 0;
929
930 ret = intel_gpu_reset(dev);
931
932 /* Also reset the gpu hangman. */
933 if (simulated) {
934 DRM_INFO("Simulated gpu hang, resetting stop_rings\n");
935 dev_priv->gpu_error.stop_rings = 0;
936 if (ret == -ENODEV) {
937 DRM_INFO("Reset not implemented, but ignoring "
938 "error for simulated gpu hangs\n");
939 ret = 0;
940 }
941 }
942
943 if (i915_stop_ring_allow_warn(dev_priv))
944 pr_notice("drm/i915: Resetting chip after gpu hang\n");
945
946 if (ret) {
947 DRM_ERROR("Failed to reset chip: %i\n", ret);
948 mutex_unlock(&dev->struct_mutex);
949 return ret;
950 }
951
952 intel_overlay_reset(dev_priv);
953
954 /* Ok, now get things going again... */
955
956 /*
957 * Everything depends on having the GTT running, so we need to start
958 * there. Fortunately we don't need to do this unless we reset the
959 * chip at a PCI level.
960 *
961 * Next we need to restore the context, but we don't use those
962 * yet either...
963 *
964 * Ring buffer needs to be re-initialized in the KMS case, or if X
965 * was running at the time of the reset (i.e. we weren't VT
966 * switched away).
967 */
968
969 /* Used to prevent gem_check_wedged returning -EAGAIN during gpu reset */
970 dev_priv->gpu_error.reload_in_reset = true;
971
972 ret = i915_gem_init_hw(dev);
973
974 dev_priv->gpu_error.reload_in_reset = false;
975
976 mutex_unlock(&dev->struct_mutex);
977 if (ret) {
978 DRM_ERROR("Failed hw init on reset %d\n", ret);
979 return ret;
980 }
981
982 /*
983 * rps/rc6 re-init is necessary to restore state lost after the
984 * reset and the re-install of gt irqs. Skip for ironlake per
985 * previous concerns that it doesn't respond well to some forms
986 * of re-init after reset.
987 */
988 if (INTEL_INFO(dev)->gen > 5)
989 intel_enable_gt_powersave(dev);
990
991 return 0;
992 }
993
994 #ifdef __NetBSD__
995
996 static const struct uvm_pagerops i915_gem_uvm_ops = {
997 .pgo_reference = drm_gem_pager_reference,
998 .pgo_detach = drm_gem_pager_detach,
999 .pgo_fault = i915_gem_fault,
1000 };
1001
1002 #else
1003
1004 static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1005 {
1006 struct intel_device_info *intel_info =
1007 (struct intel_device_info *) ent->driver_data;
1008
1009 if (IS_PRELIMINARY_HW(intel_info) && !i915.preliminary_hw_support) {
1010 DRM_INFO("This hardware requires preliminary hardware support.\n"
1011 "See CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT, and/or modparam preliminary_hw_support\n");
1012 return -ENODEV;
1013 }
1014
1015 /* Only bind to function 0 of the device. Early generations
1016 * used function 1 as a placeholder for multi-head. This causes
1017 * us confusion instead, especially on the systems where both
1018 * functions have the same PCI-ID!
1019 */
1020 if (PCI_FUNC(pdev->devfn))
1021 return -ENODEV;
1022
1023 return drm_get_pci_dev(pdev, ent, &driver);
1024 }
1025
1026 static void
1027 i915_pci_remove(struct pci_dev *pdev)
1028 {
1029 struct drm_device *dev = pci_get_drvdata(pdev);
1030
1031 drm_put_dev(dev);
1032 }
1033
1034 #ifndef __NetBSD__
1035 static int i915_pm_suspend(struct device *dev)
1036 {
1037 struct pci_dev *pdev = to_pci_dev(dev);
1038 struct drm_device *drm_dev = pci_get_drvdata(pdev);
1039
1040 if (!drm_dev || !drm_dev->dev_private) {
1041 dev_err(dev, "DRM not initialized, aborting suspend.\n");
1042 return -ENODEV;
1043 }
1044
1045 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1046 return 0;
1047
1048 return i915_drm_suspend(drm_dev);
1049 }
1050
1051 static int i915_pm_suspend_late(struct device *dev)
1052 {
1053 struct drm_device *drm_dev = dev_to_i915(dev)->dev;
1054
1055 /*
1056 * We have a suspend ordering issue with the snd-hda driver also
1057 * requiring our device to be power up. Due to the lack of a
1058 * parent/child relationship we currently solve this with an late
1059 * suspend hook.
1060 *
1061 * FIXME: This should be solved with a special hdmi sink device or
1062 * similar so that power domains can be employed.
1063 */
1064 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1065 return 0;
1066
1067 return i915_drm_suspend_late(drm_dev, false);
1068 }
1069
1070 static int i915_pm_poweroff_late(struct device *dev)
1071 {
1072 struct drm_device *drm_dev = dev_to_i915(dev)->dev;
1073
1074 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1075 return 0;
1076
1077 return i915_drm_suspend_late(drm_dev, true);
1078 }
1079
1080 static int i915_pm_resume_early(struct device *dev)
1081 {
1082 struct drm_device *drm_dev = dev_to_i915(dev)->dev;
1083
1084 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1085 return 0;
1086
1087 return i915_drm_resume_early(drm_dev);
1088 }
1089
1090 static int i915_pm_resume(struct device *dev)
1091 {
1092 struct drm_device *drm_dev = dev_to_i915(dev)->dev;
1093
1094 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1095 return 0;
1096
1097 return i915_drm_resume(drm_dev);
1098 }
1099 #endif
1100
1101 static int skl_suspend_complete(struct drm_i915_private *dev_priv)
1102 {
1103 /* Enabling DC6 is not a hard requirement to enter runtime D3 */
1104
1105 skl_uninit_cdclk(dev_priv);
1106
1107 return 0;
1108 }
1109
1110 static int hsw_suspend_complete(struct drm_i915_private *dev_priv)
1111 {
1112 hsw_enable_pc8(dev_priv);
1113
1114 return 0;
1115 }
1116
1117 static int bxt_suspend_complete(struct drm_i915_private *dev_priv)
1118 {
1119 struct drm_device *dev = dev_priv->dev;
1120
1121 /* TODO: when DC5 support is added disable DC5 here. */
1122
1123 broxton_ddi_phy_uninit(dev);
1124 broxton_uninit_cdclk(dev);
1125 bxt_enable_dc9(dev_priv);
1126
1127 return 0;
1128 }
1129
1130 static int bxt_resume_prepare(struct drm_i915_private *dev_priv)
1131 {
1132 struct drm_device *dev = dev_priv->dev;
1133
1134 /* TODO: when CSR FW support is added make sure the FW is loaded */
1135
1136 bxt_disable_dc9(dev_priv);
1137
1138 /*
1139 * TODO: when DC5 support is added enable DC5 here if the CSR FW
1140 * is available.
1141 */
1142 broxton_init_cdclk(dev);
1143 broxton_ddi_phy_init(dev);
1144 intel_prepare_ddi(dev);
1145
1146 return 0;
1147 }
1148
1149 static int skl_resume_prepare(struct drm_i915_private *dev_priv)
1150 {
1151 struct drm_device *dev = dev_priv->dev;
1152
1153 skl_init_cdclk(dev_priv);
1154 intel_csr_load_program(dev);
1155
1156 return 0;
1157 }
1158
1159 /*
1160 * Save all Gunit registers that may be lost after a D3 and a subsequent
1161 * S0i[R123] transition. The list of registers needing a save/restore is
1162 * defined in the VLV2_S0IXRegs document. This documents marks all Gunit
1163 * registers in the following way:
1164 * - Driver: saved/restored by the driver
1165 * - Punit : saved/restored by the Punit firmware
1166 * - No, w/o marking: no need to save/restore, since the register is R/O or
1167 * used internally by the HW in a way that doesn't depend
1168 * keeping the content across a suspend/resume.
1169 * - Debug : used for debugging
1170 *
1171 * We save/restore all registers marked with 'Driver', with the following
1172 * exceptions:
1173 * - Registers out of use, including also registers marked with 'Debug'.
1174 * These have no effect on the driver's operation, so we don't save/restore
1175 * them to reduce the overhead.
1176 * - Registers that are fully setup by an initialization function called from
1177 * the resume path. For example many clock gating and RPS/RC6 registers.
1178 * - Registers that provide the right functionality with their reset defaults.
1179 *
1180 * TODO: Except for registers that based on the above 3 criteria can be safely
1181 * ignored, we save/restore all others, practically treating the HW context as
1182 * a black-box for the driver. Further investigation is needed to reduce the
1183 * saved/restored registers even further, by following the same 3 criteria.
1184 */
1185 static void vlv_save_gunit_s0ix_state(struct drm_i915_private *dev_priv)
1186 {
1187 struct vlv_s0ix_state *s = &dev_priv->vlv_s0ix_state;
1188 int i;
1189
1190 /* GAM 0x4000-0x4770 */
1191 s->wr_watermark = I915_READ(GEN7_WR_WATERMARK);
1192 s->gfx_prio_ctrl = I915_READ(GEN7_GFX_PRIO_CTRL);
1193 s->arb_mode = I915_READ(ARB_MODE);
1194 s->gfx_pend_tlb0 = I915_READ(GEN7_GFX_PEND_TLB0);
1195 s->gfx_pend_tlb1 = I915_READ(GEN7_GFX_PEND_TLB1);
1196
1197 for (i = 0; i < ARRAY_SIZE(s->lra_limits); i++)
1198 s->lra_limits[i] = I915_READ(GEN7_LRA_LIMITS(i));
1199
1200 s->media_max_req_count = I915_READ(GEN7_MEDIA_MAX_REQ_COUNT);
1201 s->gfx_max_req_count = I915_READ(GEN7_GFX_MAX_REQ_COUNT);
1202
1203 s->render_hwsp = I915_READ(RENDER_HWS_PGA_GEN7);
1204 s->ecochk = I915_READ(GAM_ECOCHK);
1205 s->bsd_hwsp = I915_READ(BSD_HWS_PGA_GEN7);
1206 s->blt_hwsp = I915_READ(BLT_HWS_PGA_GEN7);
1207
1208 s->tlb_rd_addr = I915_READ(GEN7_TLB_RD_ADDR);
1209
1210 /* MBC 0x9024-0x91D0, 0x8500 */
1211 s->g3dctl = I915_READ(VLV_G3DCTL);
1212 s->gsckgctl = I915_READ(VLV_GSCKGCTL);
1213 s->mbctl = I915_READ(GEN6_MBCTL);
1214
1215 /* GCP 0x9400-0x9424, 0x8100-0x810C */
1216 s->ucgctl1 = I915_READ(GEN6_UCGCTL1);
1217 s->ucgctl3 = I915_READ(GEN6_UCGCTL3);
1218 s->rcgctl1 = I915_READ(GEN6_RCGCTL1);
1219 s->rcgctl2 = I915_READ(GEN6_RCGCTL2);
1220 s->rstctl = I915_READ(GEN6_RSTCTL);
1221 s->misccpctl = I915_READ(GEN7_MISCCPCTL);
1222
1223 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
1224 s->gfxpause = I915_READ(GEN6_GFXPAUSE);
1225 s->rpdeuhwtc = I915_READ(GEN6_RPDEUHWTC);
1226 s->rpdeuc = I915_READ(GEN6_RPDEUC);
1227 s->ecobus = I915_READ(ECOBUS);
1228 s->pwrdwnupctl = I915_READ(VLV_PWRDWNUPCTL);
1229 s->rp_down_timeout = I915_READ(GEN6_RP_DOWN_TIMEOUT);
1230 s->rp_deucsw = I915_READ(GEN6_RPDEUCSW);
1231 s->rcubmabdtmr = I915_READ(GEN6_RCUBMABDTMR);
1232 s->rcedata = I915_READ(VLV_RCEDATA);
1233 s->spare2gh = I915_READ(VLV_SPAREG2H);
1234
1235 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
1236 s->gt_imr = I915_READ(GTIMR);
1237 s->gt_ier = I915_READ(GTIER);
1238 s->pm_imr = I915_READ(GEN6_PMIMR);
1239 s->pm_ier = I915_READ(GEN6_PMIER);
1240
1241 for (i = 0; i < ARRAY_SIZE(s->gt_scratch); i++)
1242 s->gt_scratch[i] = I915_READ(GEN7_GT_SCRATCH(i));
1243
1244 /* GT SA CZ domain, 0x100000-0x138124 */
1245 s->tilectl = I915_READ(TILECTL);
1246 s->gt_fifoctl = I915_READ(GTFIFOCTL);
1247 s->gtlc_wake_ctrl = I915_READ(VLV_GTLC_WAKE_CTRL);
1248 s->gtlc_survive = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
1249 s->pmwgicz = I915_READ(VLV_PMWGICZ);
1250
1251 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
1252 s->gu_ctl0 = I915_READ(VLV_GU_CTL0);
1253 s->gu_ctl1 = I915_READ(VLV_GU_CTL1);
1254 s->pcbr = I915_READ(VLV_PCBR);
1255 s->clock_gate_dis2 = I915_READ(VLV_GUNIT_CLOCK_GATE2);
1256
1257 /*
1258 * Not saving any of:
1259 * DFT, 0x9800-0x9EC0
1260 * SARB, 0xB000-0xB1FC
1261 * GAC, 0x5208-0x524C, 0x14000-0x14C000
1262 * PCI CFG
1263 */
1264 }
1265
1266 static void vlv_restore_gunit_s0ix_state(struct drm_i915_private *dev_priv)
1267 {
1268 struct vlv_s0ix_state *s = &dev_priv->vlv_s0ix_state;
1269 u32 val;
1270 int i;
1271
1272 /* GAM 0x4000-0x4770 */
1273 I915_WRITE(GEN7_WR_WATERMARK, s->wr_watermark);
1274 I915_WRITE(GEN7_GFX_PRIO_CTRL, s->gfx_prio_ctrl);
1275 I915_WRITE(ARB_MODE, s->arb_mode | (0xffff << 16));
1276 I915_WRITE(GEN7_GFX_PEND_TLB0, s->gfx_pend_tlb0);
1277 I915_WRITE(GEN7_GFX_PEND_TLB1, s->gfx_pend_tlb1);
1278
1279 for (i = 0; i < ARRAY_SIZE(s->lra_limits); i++)
1280 I915_WRITE(GEN7_LRA_LIMITS(i), s->lra_limits[i]);
1281
1282 I915_WRITE(GEN7_MEDIA_MAX_REQ_COUNT, s->media_max_req_count);
1283 I915_WRITE(GEN7_GFX_MAX_REQ_COUNT, s->gfx_max_req_count);
1284
1285 I915_WRITE(RENDER_HWS_PGA_GEN7, s->render_hwsp);
1286 I915_WRITE(GAM_ECOCHK, s->ecochk);
1287 I915_WRITE(BSD_HWS_PGA_GEN7, s->bsd_hwsp);
1288 I915_WRITE(BLT_HWS_PGA_GEN7, s->blt_hwsp);
1289
1290 I915_WRITE(GEN7_TLB_RD_ADDR, s->tlb_rd_addr);
1291
1292 /* MBC 0x9024-0x91D0, 0x8500 */
1293 I915_WRITE(VLV_G3DCTL, s->g3dctl);
1294 I915_WRITE(VLV_GSCKGCTL, s->gsckgctl);
1295 I915_WRITE(GEN6_MBCTL, s->mbctl);
1296
1297 /* GCP 0x9400-0x9424, 0x8100-0x810C */
1298 I915_WRITE(GEN6_UCGCTL1, s->ucgctl1);
1299 I915_WRITE(GEN6_UCGCTL3, s->ucgctl3);
1300 I915_WRITE(GEN6_RCGCTL1, s->rcgctl1);
1301 I915_WRITE(GEN6_RCGCTL2, s->rcgctl2);
1302 I915_WRITE(GEN6_RSTCTL, s->rstctl);
1303 I915_WRITE(GEN7_MISCCPCTL, s->misccpctl);
1304
1305 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
1306 I915_WRITE(GEN6_GFXPAUSE, s->gfxpause);
1307 I915_WRITE(GEN6_RPDEUHWTC, s->rpdeuhwtc);
1308 I915_WRITE(GEN6_RPDEUC, s->rpdeuc);
1309 I915_WRITE(ECOBUS, s->ecobus);
1310 I915_WRITE(VLV_PWRDWNUPCTL, s->pwrdwnupctl);
1311 I915_WRITE(GEN6_RP_DOWN_TIMEOUT,s->rp_down_timeout);
1312 I915_WRITE(GEN6_RPDEUCSW, s->rp_deucsw);
1313 I915_WRITE(GEN6_RCUBMABDTMR, s->rcubmabdtmr);
1314 I915_WRITE(VLV_RCEDATA, s->rcedata);
1315 I915_WRITE(VLV_SPAREG2H, s->spare2gh);
1316
1317 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
1318 I915_WRITE(GTIMR, s->gt_imr);
1319 I915_WRITE(GTIER, s->gt_ier);
1320 I915_WRITE(GEN6_PMIMR, s->pm_imr);
1321 I915_WRITE(GEN6_PMIER, s->pm_ier);
1322
1323 for (i = 0; i < ARRAY_SIZE(s->gt_scratch); i++)
1324 I915_WRITE(GEN7_GT_SCRATCH(i), s->gt_scratch[i]);
1325
1326 /* GT SA CZ domain, 0x100000-0x138124 */
1327 I915_WRITE(TILECTL, s->tilectl);
1328 I915_WRITE(GTFIFOCTL, s->gt_fifoctl);
1329 /*
1330 * Preserve the GT allow wake and GFX force clock bit, they are not
1331 * be restored, as they are used to control the s0ix suspend/resume
1332 * sequence by the caller.
1333 */
1334 val = I915_READ(VLV_GTLC_WAKE_CTRL);
1335 val &= VLV_GTLC_ALLOWWAKEREQ;
1336 val |= s->gtlc_wake_ctrl & ~VLV_GTLC_ALLOWWAKEREQ;
1337 I915_WRITE(VLV_GTLC_WAKE_CTRL, val);
1338
1339 val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
1340 val &= VLV_GFX_CLK_FORCE_ON_BIT;
1341 val |= s->gtlc_survive & ~VLV_GFX_CLK_FORCE_ON_BIT;
1342 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG, val);
1343
1344 I915_WRITE(VLV_PMWGICZ, s->pmwgicz);
1345
1346 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
1347 I915_WRITE(VLV_GU_CTL0, s->gu_ctl0);
1348 I915_WRITE(VLV_GU_CTL1, s->gu_ctl1);
1349 I915_WRITE(VLV_PCBR, s->pcbr);
1350 I915_WRITE(VLV_GUNIT_CLOCK_GATE2, s->clock_gate_dis2);
1351 }
1352
1353 int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool force_on)
1354 {
1355 u32 val;
1356 int err;
1357
1358 #define COND (I915_READ(VLV_GTLC_SURVIVABILITY_REG) & VLV_GFX_CLK_STATUS_BIT)
1359
1360 val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
1361 val &= ~VLV_GFX_CLK_FORCE_ON_BIT;
1362 if (force_on)
1363 val |= VLV_GFX_CLK_FORCE_ON_BIT;
1364 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG, val);
1365
1366 if (!force_on)
1367 return 0;
1368
1369 err = wait_for(COND, 20);
1370 if (err)
1371 DRM_ERROR("timeout waiting for GFX clock force-on (%08x)\n",
1372 I915_READ(VLV_GTLC_SURVIVABILITY_REG));
1373
1374 return err;
1375 #undef COND
1376 }
1377
1378 static int vlv_allow_gt_wake(struct drm_i915_private *dev_priv, bool allow)
1379 {
1380 u32 val;
1381 int err = 0;
1382
1383 val = I915_READ(VLV_GTLC_WAKE_CTRL);
1384 val &= ~VLV_GTLC_ALLOWWAKEREQ;
1385 if (allow)
1386 val |= VLV_GTLC_ALLOWWAKEREQ;
1387 I915_WRITE(VLV_GTLC_WAKE_CTRL, val);
1388 POSTING_READ(VLV_GTLC_WAKE_CTRL);
1389
1390 #define COND (!!(I915_READ(VLV_GTLC_PW_STATUS) & VLV_GTLC_ALLOWWAKEACK) == \
1391 allow)
1392 err = wait_for(COND, 1);
1393 if (err)
1394 DRM_ERROR("timeout disabling GT waking\n");
1395 return err;
1396 #undef COND
1397 }
1398
1399 static int vlv_wait_for_gt_wells(struct drm_i915_private *dev_priv,
1400 bool wait_for_on)
1401 {
1402 u32 mask;
1403 u32 val;
1404 int err;
1405
1406 mask = VLV_GTLC_PW_MEDIA_STATUS_MASK | VLV_GTLC_PW_RENDER_STATUS_MASK;
1407 val = wait_for_on ? mask : 0;
1408 #define COND ((I915_READ(VLV_GTLC_PW_STATUS) & mask) == val)
1409 if (COND)
1410 return 0;
1411
1412 DRM_DEBUG_KMS("waiting for GT wells to go %s (%08x)\n",
1413 wait_for_on ? "on" : "off",
1414 I915_READ(VLV_GTLC_PW_STATUS));
1415
1416 /*
1417 * RC6 transitioning can be delayed up to 2 msec (see
1418 * valleyview_enable_rps), use 3 msec for safety.
1419 */
1420 err = wait_for(COND, 3);
1421 if (err)
1422 DRM_ERROR("timeout waiting for GT wells to go %s\n",
1423 wait_for_on ? "on" : "off");
1424
1425 return err;
1426 #undef COND
1427 }
1428
1429 static void vlv_check_no_gt_access(struct drm_i915_private *dev_priv)
1430 {
1431 if (!(I915_READ(VLV_GTLC_PW_STATUS) & VLV_GTLC_ALLOWWAKEERR))
1432 return;
1433
1434 DRM_ERROR("GT register access while GT waking disabled\n");
1435 I915_WRITE(VLV_GTLC_PW_STATUS, VLV_GTLC_ALLOWWAKEERR);
1436 }
1437
1438 static int vlv_suspend_complete(struct drm_i915_private *dev_priv)
1439 {
1440 u32 mask;
1441 int err;
1442
1443 /*
1444 * Bspec defines the following GT well on flags as debug only, so
1445 * don't treat them as hard failures.
1446 */
1447 (void)vlv_wait_for_gt_wells(dev_priv, false);
1448
1449 mask = VLV_GTLC_RENDER_CTX_EXISTS | VLV_GTLC_MEDIA_CTX_EXISTS;
1450 WARN_ON((I915_READ(VLV_GTLC_WAKE_CTRL) & mask) != mask);
1451
1452 vlv_check_no_gt_access(dev_priv);
1453
1454 err = vlv_force_gfx_clock(dev_priv, true);
1455 if (err)
1456 goto err1;
1457
1458 err = vlv_allow_gt_wake(dev_priv, false);
1459 if (err)
1460 goto err2;
1461
1462 if (!IS_CHERRYVIEW(dev_priv->dev))
1463 vlv_save_gunit_s0ix_state(dev_priv);
1464
1465 err = vlv_force_gfx_clock(dev_priv, false);
1466 if (err)
1467 goto err2;
1468
1469 return 0;
1470
1471 err2:
1472 /* For safety always re-enable waking and disable gfx clock forcing */
1473 vlv_allow_gt_wake(dev_priv, true);
1474 err1:
1475 vlv_force_gfx_clock(dev_priv, false);
1476
1477 return err;
1478 }
1479
1480 static int vlv_resume_prepare(struct drm_i915_private *dev_priv,
1481 bool rpm_resume)
1482 {
1483 struct drm_device *dev = dev_priv->dev;
1484 int err;
1485 int ret;
1486
1487 /*
1488 * If any of the steps fail just try to continue, that's the best we
1489 * can do at this point. Return the first error code (which will also
1490 * leave RPM permanently disabled).
1491 */
1492 ret = vlv_force_gfx_clock(dev_priv, true);
1493
1494 if (!IS_CHERRYVIEW(dev_priv->dev))
1495 vlv_restore_gunit_s0ix_state(dev_priv);
1496
1497 err = vlv_allow_gt_wake(dev_priv, true);
1498 if (!ret)
1499 ret = err;
1500
1501 err = vlv_force_gfx_clock(dev_priv, false);
1502 if (!ret)
1503 ret = err;
1504
1505 vlv_check_no_gt_access(dev_priv);
1506
1507 if (rpm_resume) {
1508 intel_init_clock_gating(dev);
1509 i915_gem_restore_fences(dev);
1510 }
1511
1512 return ret;
1513 }
1514
1515 static int intel_runtime_suspend(struct device *device)
1516 {
1517 struct pci_dev *pdev = to_pci_dev(device);
1518 struct drm_device *dev = pci_get_drvdata(pdev);
1519 struct drm_i915_private *dev_priv = dev->dev_private;
1520 int ret;
1521
1522 if (WARN_ON_ONCE(!(dev_priv->rps.enabled && intel_enable_rc6(dev))))
1523 return -ENODEV;
1524
1525 if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev)))
1526 return -ENODEV;
1527
1528 DRM_DEBUG_KMS("Suspending device\n");
1529
1530 /*
1531 * We could deadlock here in case another thread holding struct_mutex
1532 * calls RPM suspend concurrently, since the RPM suspend will wait
1533 * first for this RPM suspend to finish. In this case the concurrent
1534 * RPM resume will be followed by its RPM suspend counterpart. Still
1535 * for consistency return -EAGAIN, which will reschedule this suspend.
1536 */
1537 if (!mutex_trylock(&dev->struct_mutex)) {
1538 DRM_DEBUG_KMS("device lock contention, deffering suspend\n");
1539 /*
1540 * Bump the expiration timestamp, otherwise the suspend won't
1541 * be rescheduled.
1542 */
1543 pm_runtime_mark_last_busy(device);
1544
1545 return -EAGAIN;
1546 }
1547 /*
1548 * We are safe here against re-faults, since the fault handler takes
1549 * an RPM reference.
1550 */
1551 i915_gem_release_all_mmaps(dev_priv);
1552 mutex_unlock(&dev->struct_mutex);
1553
1554 intel_guc_suspend(dev);
1555
1556 intel_suspend_gt_powersave(dev);
1557 intel_runtime_pm_disable_interrupts(dev_priv);
1558
1559 ret = intel_suspend_complete(dev_priv);
1560 if (ret) {
1561 DRM_ERROR("Runtime suspend failed, disabling it (%d)\n", ret);
1562 intel_runtime_pm_enable_interrupts(dev_priv);
1563
1564 return ret;
1565 }
1566
1567 cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work);
1568 intel_uncore_forcewake_reset(dev, false);
1569 dev_priv->pm.suspended = true;
1570
1571 /*
1572 * FIXME: We really should find a document that references the arguments
1573 * used below!
1574 */
1575 if (IS_BROADWELL(dev)) {
1576 /*
1577 * On Broadwell, if we use PCI_D1 the PCH DDI ports will stop
1578 * being detected, and the call we do at intel_runtime_resume()
1579 * won't be able to restore them. Since PCI_D3hot matches the
1580 * actual specification and appears to be working, use it.
1581 */
1582 intel_opregion_notify_adapter(dev, PCI_D3hot);
1583 } else {
1584 /*
1585 * current versions of firmware which depend on this opregion
1586 * notification have repurposed the D1 definition to mean
1587 * "runtime suspended" vs. what you would normally expect (D3)
1588 * to distinguish it from notifications that might be sent via
1589 * the suspend path.
1590 */
1591 intel_opregion_notify_adapter(dev, PCI_D1);
1592 }
1593
1594 assert_forcewakes_inactive(dev_priv);
1595
1596 DRM_DEBUG_KMS("Device suspended\n");
1597 return 0;
1598 }
1599
1600 static int intel_runtime_resume(struct device *device)
1601 {
1602 struct pci_dev *pdev = to_pci_dev(device);
1603 struct drm_device *dev = pci_get_drvdata(pdev);
1604 struct drm_i915_private *dev_priv = dev->dev_private;
1605 int ret = 0;
1606
1607 if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev)))
1608 return -ENODEV;
1609
1610 DRM_DEBUG_KMS("Resuming device\n");
1611
1612 intel_opregion_notify_adapter(dev, PCI_D0);
1613 dev_priv->pm.suspended = false;
1614
1615 intel_guc_resume(dev);
1616
1617 if (IS_GEN6(dev_priv))
1618 intel_init_pch_refclk(dev);
1619
1620 if (IS_BROXTON(dev))
1621 ret = bxt_resume_prepare(dev_priv);
1622 else if (IS_SKYLAKE(dev))
1623 ret = skl_resume_prepare(dev_priv);
1624 else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
1625 hsw_disable_pc8(dev_priv);
1626 else if (IS_VALLEYVIEW(dev_priv))
1627 ret = vlv_resume_prepare(dev_priv, true);
1628
1629 /*
1630 * No point of rolling back things in case of an error, as the best
1631 * we can do is to hope that things will still work (and disable RPM).
1632 */
1633 i915_gem_init_swizzling(dev);
1634 gen6_update_ring_freq(dev);
1635
1636 intel_runtime_pm_enable_interrupts(dev_priv);
1637
1638 /*
1639 * On VLV/CHV display interrupts are part of the display
1640 * power well, so hpd is reinitialized from there. For
1641 * everyone else do it here.
1642 */
1643 if (!IS_VALLEYVIEW(dev_priv))
1644 intel_hpd_init(dev_priv);
1645
1646 intel_enable_gt_powersave(dev);
1647
1648 if (ret)
1649 DRM_ERROR("Runtime resume failed, disabling it (%d)\n", ret);
1650 else
1651 DRM_DEBUG_KMS("Device resumed\n");
1652
1653 return ret;
1654 }
1655
1656 /*
1657 * This function implements common functionality of runtime and system
1658 * suspend sequence.
1659 */
1660 static int intel_suspend_complete(struct drm_i915_private *dev_priv)
1661 {
1662 int ret;
1663
1664 if (IS_BROXTON(dev_priv))
1665 ret = bxt_suspend_complete(dev_priv);
1666 else if (IS_SKYLAKE(dev_priv))
1667 ret = skl_suspend_complete(dev_priv);
1668 else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
1669 ret = hsw_suspend_complete(dev_priv);
1670 else if (IS_VALLEYVIEW(dev_priv))
1671 ret = vlv_suspend_complete(dev_priv);
1672 else
1673 ret = 0;
1674
1675 return ret;
1676 }
1677
1678 static const struct dev_pm_ops i915_pm_ops = {
1679 /*
1680 * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND,
1681 * PMSG_RESUME]
1682 */
1683 .suspend = i915_pm_suspend,
1684 .suspend_late = i915_pm_suspend_late,
1685 .resume_early = i915_pm_resume_early,
1686 .resume = i915_pm_resume,
1687
1688 /*
1689 * S4 event handlers
1690 * @freeze, @freeze_late : called (1) before creating the
1691 * hibernation image [PMSG_FREEZE] and
1692 * (2) after rebooting, before restoring
1693 * the image [PMSG_QUIESCE]
1694 * @thaw, @thaw_early : called (1) after creating the hibernation
1695 * image, before writing it [PMSG_THAW]
1696 * and (2) after failing to create or
1697 * restore the image [PMSG_RECOVER]
1698 * @poweroff, @poweroff_late: called after writing the hibernation
1699 * image, before rebooting [PMSG_HIBERNATE]
1700 * @restore, @restore_early : called after rebooting and restoring the
1701 * hibernation image [PMSG_RESTORE]
1702 */
1703 .freeze = i915_pm_suspend,
1704 .freeze_late = i915_pm_suspend_late,
1705 .thaw_early = i915_pm_resume_early,
1706 .thaw = i915_pm_resume,
1707 .poweroff = i915_pm_suspend,
1708 .poweroff_late = i915_pm_poweroff_late,
1709 .restore_early = i915_pm_resume_early,
1710 .restore = i915_pm_resume,
1711
1712 /* S0ix (via runtime suspend) event handlers */
1713 .runtime_suspend = intel_runtime_suspend,
1714 .runtime_resume = intel_runtime_resume,
1715 };
1716
1717 static const struct vm_operations_struct i915_gem_vm_ops = {
1718 .fault = i915_gem_fault,
1719 .open = drm_gem_vm_open,
1720 .close = drm_gem_vm_close,
1721 };
1722
1723 static const struct file_operations i915_driver_fops = {
1724 .owner = THIS_MODULE,
1725 .open = drm_open,
1726 .release = drm_release,
1727 .unlocked_ioctl = drm_ioctl,
1728 .mmap = drm_gem_mmap,
1729 .poll = drm_poll,
1730 .read = drm_read,
1731 #ifdef CONFIG_COMPAT
1732 .compat_ioctl = i915_compat_ioctl,
1733 #endif
1734 .llseek = noop_llseek,
1735 };
1736
1737 #endif /* defined(__NetBSD__) */
1738
1739 static struct drm_driver driver = {
1740 /* Don't use MTRRs here; the Xserver or userspace app should
1741 * deal with them for Intel hardware.
1742 */
1743 .driver_features =
1744 DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME |
1745 DRIVER_RENDER | DRIVER_MODESET,
1746 .load = i915_driver_load,
1747 .unload = i915_driver_unload,
1748 .open = i915_driver_open,
1749 .lastclose = i915_driver_lastclose,
1750 .preclose = i915_driver_preclose,
1751 .postclose = i915_driver_postclose,
1752 .set_busid = drm_pci_set_busid,
1753 #ifdef __NetBSD__
1754 .request_irq = drm_pci_request_irq,
1755 .free_irq = drm_pci_free_irq,
1756 #endif
1757
1758 #if defined(CONFIG_DEBUG_FS)
1759 .debugfs_init = i915_debugfs_init,
1760 .debugfs_cleanup = i915_debugfs_cleanup,
1761 #endif
1762 .gem_free_object = i915_gem_free_object,
1763 #ifdef __NetBSD__
1764 /* XXX Not clear the `or legacy' part is important here. */
1765 .mmap_object = &drm_gem_or_legacy_mmap_object,
1766 .gem_uvm_ops = &i915_gem_uvm_ops,
1767 #else
1768 .gem_vm_ops = &i915_gem_vm_ops,
1769 #endif
1770
1771 #ifndef __NetBSD__ /* XXX drm prime */
1772 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1773 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1774 .gem_prime_export = i915_gem_prime_export,
1775 .gem_prime_import = i915_gem_prime_import,
1776 #endif
1777
1778 .dumb_create = i915_gem_dumb_create,
1779 .dumb_map_offset = i915_gem_mmap_gtt,
1780 .dumb_destroy = drm_gem_dumb_destroy,
1781 .ioctls = i915_ioctls,
1782 #ifdef __NetBSD__
1783 .fops = NULL,
1784 #else
1785 .fops = &i915_driver_fops,
1786 #endif
1787 .name = DRIVER_NAME,
1788 .desc = DRIVER_DESC,
1789 .date = DRIVER_DATE,
1790 .major = DRIVER_MAJOR,
1791 .minor = DRIVER_MINOR,
1792 .patchlevel = DRIVER_PATCHLEVEL,
1793 };
1794
1795 #ifndef __NetBSD__
1796 static struct pci_driver i915_pci_driver = {
1797 .name = DRIVER_NAME,
1798 .id_table = pciidlist,
1799 .probe = i915_pci_probe,
1800 .remove = i915_pci_remove,
1801 .driver.pm = &i915_pm_ops,
1802 };
1803 #endif
1804
1805 #ifndef __NetBSD__
1806 static int __init i915_init(void)
1807 {
1808 driver.num_ioctls = i915_max_ioctl;
1809
1810 /*
1811 * Enable KMS by default, unless explicitly overriden by
1812 * either the i915.modeset prarameter or by the
1813 * vga_text_mode_force boot option.
1814 */
1815
1816 if (i915.modeset == 0)
1817 driver.driver_features &= ~DRIVER_MODESET;
1818
1819 #ifdef CONFIG_VGA_CONSOLE
1820 if (vgacon_text_force() && i915.modeset == -1)
1821 driver.driver_features &= ~DRIVER_MODESET;
1822 #endif
1823
1824 if (!(driver.driver_features & DRIVER_MODESET)) {
1825 /* Silently fail loading to not upset userspace. */
1826 DRM_DEBUG_DRIVER("KMS and UMS disabled.\n");
1827 return 0;
1828 }
1829
1830 if (i915.nuclear_pageflip)
1831 driver.driver_features |= DRIVER_ATOMIC;
1832
1833 return drm_pci_init(&driver, &i915_pci_driver);
1834 }
1835
1836 static void __exit i915_exit(void)
1837 {
1838 if (!(driver.driver_features & DRIVER_MODESET))
1839 return; /* Never loaded a driver. */
1840
1841 drm_pci_exit(&driver, &i915_pci_driver);
1842 }
1843
1844 module_init(i915_init);
1845 module_exit(i915_exit);
1846 #endif
1847
1848 MODULE_AUTHOR("Tungsten Graphics, Inc.");
1849 MODULE_AUTHOR("Intel Corporation");
1850
1851 MODULE_DESCRIPTION(DRIVER_DESC);
1852 MODULE_LICENSE("GPL and additional rights");
1853