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drm/i915: Track active vma requests
[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / i915 / i915_drv.c
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1da177e4
LT		 1/* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*-
2 */
0d6aa60b 3/*
bc54fd1a 4 *
1da177e4
LT		 5 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * All Rights Reserved.
bc54fd1a
DA		 7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
15 *
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
18 * of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
23 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
24 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
25 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
26 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 *
0d6aa60b 28 */
1da177e4 29
e5747e3a 30#include <linux/acpi.h>
0673ad47
CW		 31#include <linux/device.h>
32#include <linux/oom.h>
e0cd3608 33#include <linux/module.h>
0673ad47
CW		 34#include <linux/pci.h>
35#include <linux/pm.h>
d6102977 36#include <linux/pm_runtime.h>
0673ad47
CW		 37#include <linux/pnp.h>
38#include <linux/slab.h>
39#include <linux/vgaarb.h>
704ab614 40#include <linux/vga_switcheroo.h>
0673ad47
CW		 41#include <linux/vt.h>
42#include <acpi/video.h>
43
44#include <drm/drmP.h>
760285e7 45#include <drm/drm_crtc_helper.h>
0673ad47
CW		 46#include <drm/i915_drm.h>
47
48#include "i915_drv.h"
49#include "i915_trace.h"
50#include "i915_vgpu.h"
51#include "intel_drv.h"
79e53945 52
112b715e
KH		 53static struct drm_driver driver;
54
0673ad47
CW		 55static unsigned int i915_load_fail_count;
56
57bool __i915_inject_load_failure(const char *func, int line)
58{
59 if (i915_load_fail_count >= i915.inject_load_failure)
60 return false;
61
62 if (++i915_load_fail_count == i915.inject_load_failure) {
63 DRM_INFO("Injecting failure at checkpoint %u [%s:%d]\n",
64 i915.inject_load_failure, func, line);
65 return true;
66 }
67
68 return false;
69}
70
71#define FDO_BUG_URL "https://bugs.freedesktop.org/enter_bug.cgi?product=DRI"
72#define FDO_BUG_MSG "Please file a bug at " FDO_BUG_URL " against DRM/Intel " \
73 "providing the dmesg log by booting with drm.debug=0xf"
74
75void
76__i915_printk(struct drm_i915_private *dev_priv, const char *level,
77 const char *fmt, ...)
78{
79 static bool shown_bug_once;
fb939420 80 struct device *dev = dev_priv->drm.dev;
0673ad47
CW		 81 bool is_error = level[1] <= KERN_ERR[1];
82 bool is_debug = level[1] == KERN_DEBUG[1];
83 struct va_format vaf;
84 va_list args;
85
86 if (is_debug && !(drm_debug & DRM_UT_DRIVER))
87 return;
88
89 va_start(args, fmt);
90
91 vaf.fmt = fmt;
92 vaf.va = &args;
93
94 dev_printk(level, dev, "[" DRM_NAME ":%ps] %pV",
95 __builtin_return_address(0), &vaf);
96
97 if (is_error && !shown_bug_once) {
98 dev_notice(dev, "%s", FDO_BUG_MSG);
99 shown_bug_once = true;
100 }
101
102 va_end(args);
103}
104
105static bool i915_error_injected(struct drm_i915_private *dev_priv)
106{
107 return i915.inject_load_failure &&
108 i915_load_fail_count == i915.inject_load_failure;
109}
110
111#define i915_load_error(dev_priv, fmt, ...) \
112 __i915_printk(dev_priv, \
113 i915_error_injected(dev_priv) ? KERN_DEBUG : KERN_ERR, \
114 fmt, ##__VA_ARGS__)
115
116
117static enum intel_pch intel_virt_detect_pch(struct drm_device *dev)
118{
119 enum intel_pch ret = PCH_NOP;
120
121 /*
122 * In a virtualized passthrough environment we can be in a
123 * setup where the ISA bridge is not able to be passed through.
124 * In this case, a south bridge can be emulated and we have to
125 * make an educated guess as to which PCH is really there.
126 */
127
128 if (IS_GEN5(dev)) {
129 ret = PCH_IBX;
130 DRM_DEBUG_KMS("Assuming Ibex Peak PCH\n");
131 } else if (IS_GEN6(dev) || IS_IVYBRIDGE(dev)) {
132 ret = PCH_CPT;
133 DRM_DEBUG_KMS("Assuming CouarPoint PCH\n");
134 } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
135 ret = PCH_LPT;
136 DRM_DEBUG_KMS("Assuming LynxPoint PCH\n");
137 } else if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
138 ret = PCH_SPT;
139 DRM_DEBUG_KMS("Assuming SunrisePoint PCH\n");
140 }
141
142 return ret;
143}
144
145static void intel_detect_pch(struct drm_device *dev)
146{
fac5e23e 147 struct drm_i915_private *dev_priv = to_i915(dev);
0673ad47
CW		 148 struct pci_dev *pch = NULL;
149
150 /* In all current cases, num_pipes is equivalent to the PCH_NOP setting
151 * (which really amounts to a PCH but no South Display).
152 */
153 if (INTEL_INFO(dev)->num_pipes == 0) {
154 dev_priv->pch_type = PCH_NOP;
155 return;
156 }
157
158 /*
159 * The reason to probe ISA bridge instead of Dev31:Fun0 is to
160 * make graphics device passthrough work easy for VMM, that only
161 * need to expose ISA bridge to let driver know the real hardware
162 * underneath. This is a requirement from virtualization team.
163 *
164 * In some virtualized environments (e.g. XEN), there is irrelevant
165 * ISA bridge in the system. To work reliably, we should scan trhough
166 * all the ISA bridge devices and check for the first match, instead
167 * of only checking the first one.
168 */
169 while ((pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, pch))) {
170 if (pch->vendor == PCI_VENDOR_ID_INTEL) {
171 unsigned short id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
172 dev_priv->pch_id = id;
173
174 if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) {
175 dev_priv->pch_type = PCH_IBX;
176 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
177 WARN_ON(!IS_GEN5(dev));
178 } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
179 dev_priv->pch_type = PCH_CPT;
180 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
181 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
182 } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) {
183 /* PantherPoint is CPT compatible */
184 dev_priv->pch_type = PCH_CPT;
185 DRM_DEBUG_KMS("Found PantherPoint PCH\n");
186 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
187 } else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
188 dev_priv->pch_type = PCH_LPT;
189 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
190 WARN_ON(!IS_HASWELL(dev) && !IS_BROADWELL(dev));
191 WARN_ON(IS_HSW_ULT(dev) || IS_BDW_ULT(dev));
192 } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
193 dev_priv->pch_type = PCH_LPT;
194 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
195 WARN_ON(!IS_HASWELL(dev) && !IS_BROADWELL(dev));
196 WARN_ON(!IS_HSW_ULT(dev) && !IS_BDW_ULT(dev));
197 } else if (id == INTEL_PCH_SPT_DEVICE_ID_TYPE) {
198 dev_priv->pch_type = PCH_SPT;
199 DRM_DEBUG_KMS("Found SunrisePoint PCH\n");
200 WARN_ON(!IS_SKYLAKE(dev) &&
201 !IS_KABYLAKE(dev));
202 } else if (id == INTEL_PCH_SPT_LP_DEVICE_ID_TYPE) {
203 dev_priv->pch_type = PCH_SPT;
204 DRM_DEBUG_KMS("Found SunrisePoint LP PCH\n");
205 WARN_ON(!IS_SKYLAKE(dev) &&
206 !IS_KABYLAKE(dev));
22dea0be
RV		 207 } else if (id == INTEL_PCH_KBP_DEVICE_ID_TYPE) {
208 dev_priv->pch_type = PCH_KBP;
209 DRM_DEBUG_KMS("Found KabyPoint PCH\n");
210 WARN_ON(!IS_KABYLAKE(dev));
0673ad47
CW		 211 } else if ((id == INTEL_PCH_P2X_DEVICE_ID_TYPE) ||
212 (id == INTEL_PCH_P3X_DEVICE_ID_TYPE) ||
213 ((id == INTEL_PCH_QEMU_DEVICE_ID_TYPE) &&
214 pch->subsystem_vendor ==
215 PCI_SUBVENDOR_ID_REDHAT_QUMRANET &&
216 pch->subsystem_device ==
217 PCI_SUBDEVICE_ID_QEMU)) {
218 dev_priv->pch_type = intel_virt_detect_pch(dev);
219 } else
220 continue;
221
222 break;
223 }
224 }
225 if (!pch)
226 DRM_DEBUG_KMS("No PCH found.\n");
227
228 pci_dev_put(pch);
229}
230
0673ad47
CW		 231static int i915_getparam(struct drm_device *dev, void *data,
232 struct drm_file *file_priv)
233{
fac5e23e 234 struct drm_i915_private *dev_priv = to_i915(dev);
0673ad47
CW		 235 drm_i915_getparam_t *param = data;
236 int value;
237
238 switch (param->param) {
239 case I915_PARAM_IRQ_ACTIVE:
240 case I915_PARAM_ALLOW_BATCHBUFFER:
241 case I915_PARAM_LAST_DISPATCH:
242 /* Reject all old ums/dri params. */
243 return -ENODEV;
244 case I915_PARAM_CHIPSET_ID:
245 value = dev->pdev->device;
246 break;
247 case I915_PARAM_REVISION:
248 value = dev->pdev->revision;
249 break;
250 case I915_PARAM_HAS_GEM:
251 value = 1;
252 break;
253 case I915_PARAM_NUM_FENCES_AVAIL:
254 value = dev_priv->num_fence_regs;
255 break;
256 case I915_PARAM_HAS_OVERLAY:
257 value = dev_priv->overlay ? 1 : 0;
258 break;
259 case I915_PARAM_HAS_PAGEFLIPPING:
260 value = 1;
261 break;
262 case I915_PARAM_HAS_EXECBUF2:
263 /* depends on GEM */
264 value = 1;
265 break;
266 case I915_PARAM_HAS_BSD:
267 value = intel_engine_initialized(&dev_priv->engine[VCS]);
268 break;
269 case I915_PARAM_HAS_BLT:
270 value = intel_engine_initialized(&dev_priv->engine[BCS]);
271 break;
272 case I915_PARAM_HAS_VEBOX:
273 value = intel_engine_initialized(&dev_priv->engine[VECS]);
274 break;
275 case I915_PARAM_HAS_BSD2:
276 value = intel_engine_initialized(&dev_priv->engine[VCS2]);
277 break;
278 case I915_PARAM_HAS_RELAXED_FENCING:
279 value = 1;
280 break;
281 case I915_PARAM_HAS_COHERENT_RINGS:
282 value = 1;
283 break;
284 case I915_PARAM_HAS_EXEC_CONSTANTS:
285 value = INTEL_INFO(dev)->gen >= 4;
286 break;
287 case I915_PARAM_HAS_RELAXED_DELTA:
288 value = 1;
289 break;
290 case I915_PARAM_HAS_GEN7_SOL_RESET:
291 value = 1;
292 break;
293 case I915_PARAM_HAS_LLC:
294 value = HAS_LLC(dev);
295 break;
296 case I915_PARAM_HAS_WT:
297 value = HAS_WT(dev);
298 break;
299 case I915_PARAM_HAS_ALIASING_PPGTT:
300 value = USES_PPGTT(dev);
301 break;
302 case I915_PARAM_HAS_WAIT_TIMEOUT:
303 value = 1;
304 break;
305 case I915_PARAM_HAS_SEMAPHORES:
39df9190 306 value = i915.semaphores;
0673ad47
CW		 307 break;
308 case I915_PARAM_HAS_PRIME_VMAP_FLUSH:
309 value = 1;
310 break;
311 case I915_PARAM_HAS_SECURE_BATCHES:
312 value = capable(CAP_SYS_ADMIN);
313 break;
314 case I915_PARAM_HAS_PINNED_BATCHES:
315 value = 1;
316 break;
317 case I915_PARAM_HAS_EXEC_NO_RELOC:
318 value = 1;
319 break;
320 case I915_PARAM_HAS_EXEC_HANDLE_LUT:
321 value = 1;
322 break;
323 case I915_PARAM_CMD_PARSER_VERSION:
324 value = i915_cmd_parser_get_version(dev_priv);
325 break;
326 case I915_PARAM_HAS_COHERENT_PHYS_GTT:
327 value = 1;
328 break;
329 case I915_PARAM_MMAP_VERSION:
330 value = 1;
331 break;
332 case I915_PARAM_SUBSLICE_TOTAL:
333 value = INTEL_INFO(dev)->subslice_total;
334 if (!value)
335 return -ENODEV;
336 break;
337 case I915_PARAM_EU_TOTAL:
338 value = INTEL_INFO(dev)->eu_total;
339 if (!value)
340 return -ENODEV;
341 break;
342 case I915_PARAM_HAS_GPU_RESET:
343 value = i915.enable_hangcheck && intel_has_gpu_reset(dev_priv);
344 break;
345 case I915_PARAM_HAS_RESOURCE_STREAMER:
346 value = HAS_RESOURCE_STREAMER(dev);
347 break;
348 case I915_PARAM_HAS_EXEC_SOFTPIN:
349 value = 1;
350 break;
37f501af 351 case I915_PARAM_HAS_POOLED_EU:
352 value = HAS_POOLED_EU(dev);
353 break;
354 case I915_PARAM_MIN_EU_IN_POOL:
355 value = INTEL_INFO(dev)->min_eu_in_pool;
356 break;
0673ad47
CW		 357 default:
358 DRM_DEBUG("Unknown parameter %d\n", param->param);
359 return -EINVAL;
360 }
361
dda33009 362 if (put_user(value, param->value))
0673ad47 363 return -EFAULT;
0673ad47
CW		 364
365 return 0;
366}
367
368static int i915_get_bridge_dev(struct drm_device *dev)
369{
fac5e23e 370 struct drm_i915_private *dev_priv = to_i915(dev);
0673ad47
CW		 371
372 dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
373 if (!dev_priv->bridge_dev) {
374 DRM_ERROR("bridge device not found\n");
375 return -1;
376 }
377 return 0;
378}
379
380/* Allocate space for the MCH regs if needed, return nonzero on error */
381static int
382intel_alloc_mchbar_resource(struct drm_device *dev)
383{
fac5e23e 384 struct drm_i915_private *dev_priv = to_i915(dev);
0673ad47
CW		 385 int reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
386 u32 temp_lo, temp_hi = 0;
387 u64 mchbar_addr;
388 int ret;
389
390 if (INTEL_INFO(dev)->gen >= 4)
391 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
392 pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
393 mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
394
395 /* If ACPI doesn't have it, assume we need to allocate it ourselves */
396#ifdef CONFIG_PNP
397 if (mchbar_addr &&
398 pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
399 return 0;
400#endif
401
402 /* Get some space for it */
403 dev_priv->mch_res.name = "i915 MCHBAR";
404 dev_priv->mch_res.flags = IORESOURCE_MEM;
405 ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus,
406 &dev_priv->mch_res,
407 MCHBAR_SIZE, MCHBAR_SIZE,
408 PCIBIOS_MIN_MEM,
409 0, pcibios_align_resource,
410 dev_priv->bridge_dev);
411 if (ret) {
412 DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret);
413 dev_priv->mch_res.start = 0;
414 return ret;
415 }
416
417 if (INTEL_INFO(dev)->gen >= 4)
418 pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
419 upper_32_bits(dev_priv->mch_res.start));
420
421 pci_write_config_dword(dev_priv->bridge_dev, reg,
422 lower_32_bits(dev_priv->mch_res.start));
423 return 0;
424}
425
426/* Setup MCHBAR if possible, return true if we should disable it again */
427static void
428intel_setup_mchbar(struct drm_device *dev)
429{
fac5e23e 430 struct drm_i915_private *dev_priv = to_i915(dev);
0673ad47
CW		 431 int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
432 u32 temp;
433 bool enabled;
434
435 if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
436 return;
437
438 dev_priv->mchbar_need_disable = false;
439
440 if (IS_I915G(dev) || IS_I915GM(dev)) {
441 pci_read_config_dword(dev_priv->bridge_dev, DEVEN, &temp);
442 enabled = !!(temp & DEVEN_MCHBAR_EN);
443 } else {
444 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
445 enabled = temp & 1;
446 }
447
448 /* If it's already enabled, don't have to do anything */
449 if (enabled)
450 return;
451
452 if (intel_alloc_mchbar_resource(dev))
453 return;
454
455 dev_priv->mchbar_need_disable = true;
456
457 /* Space is allocated or reserved, so enable it. */
458 if (IS_I915G(dev) || IS_I915GM(dev)) {
459 pci_write_config_dword(dev_priv->bridge_dev, DEVEN,
460 temp | DEVEN_MCHBAR_EN);
461 } else {
462 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
463 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
464 }
465}
466
467static void
468intel_teardown_mchbar(struct drm_device *dev)
469{
fac5e23e 470 struct drm_i915_private *dev_priv = to_i915(dev);
0673ad47
CW		 471 int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
472
473 if (dev_priv->mchbar_need_disable) {
474 if (IS_I915G(dev) || IS_I915GM(dev)) {
475 u32 deven_val;
476
477 pci_read_config_dword(dev_priv->bridge_dev, DEVEN,
478 &deven_val);
479 deven_val &= ~DEVEN_MCHBAR_EN;
480 pci_write_config_dword(dev_priv->bridge_dev, DEVEN,
481 deven_val);
482 } else {
483 u32 mchbar_val;
484
485 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg,
486 &mchbar_val);
487 mchbar_val &= ~1;
488 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg,
489 mchbar_val);
490 }
491 }
492
493 if (dev_priv->mch_res.start)
494 release_resource(&dev_priv->mch_res);
495}
496
497/* true = enable decode, false = disable decoder */
498static unsigned int i915_vga_set_decode(void *cookie, bool state)
499{
500 struct drm_device *dev = cookie;
501
502 intel_modeset_vga_set_state(dev, state);
503 if (state)
504 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
505 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
506 else
507 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
508}
509
510static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
511{
512 struct drm_device *dev = pci_get_drvdata(pdev);
513 pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
514
515 if (state == VGA_SWITCHEROO_ON) {
516 pr_info("switched on\n");
517 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
518 /* i915 resume handler doesn't set to D0 */
519 pci_set_power_state(dev->pdev, PCI_D0);
520 i915_resume_switcheroo(dev);
521 dev->switch_power_state = DRM_SWITCH_POWER_ON;
522 } else {
523 pr_info("switched off\n");
524 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
525 i915_suspend_switcheroo(dev, pmm);
526 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
527 }
528}
529
530static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
531{
532 struct drm_device *dev = pci_get_drvdata(pdev);
533
534 /*
535 * FIXME: open_count is protected by drm_global_mutex but that would lead to
536 * locking inversion with the driver load path. And the access here is
537 * completely racy anyway. So don't bother with locking for now.
538 */
539 return dev->open_count == 0;
540}
541
542static const struct vga_switcheroo_client_ops i915_switcheroo_ops = {
543 .set_gpu_state = i915_switcheroo_set_state,
544 .reprobe = NULL,
545 .can_switch = i915_switcheroo_can_switch,
546};
547
548static void i915_gem_fini(struct drm_device *dev)
549{
550 struct drm_i915_private *dev_priv = to_i915(dev);
551
552 /*
553 * Neither the BIOS, ourselves or any other kernel
554 * expects the system to be in execlists mode on startup,
555 * so we need to reset the GPU back to legacy mode. And the only
556 * known way to disable logical contexts is through a GPU reset.
557 *
558 * So in order to leave the system in a known default configuration,
559 * always reset the GPU upon unload. Afterwards we then clean up the
560 * GEM state tracking, flushing off the requests and leaving the
561 * system in a known idle state.
562 *
563 * Note that is of the upmost importance that the GPU is idle and
564 * all stray writes are flushed *before* we dismantle the backing
565 * storage for the pinned objects.
566 *
567 * However, since we are uncertain that reseting the GPU on older
568 * machines is a good idea, we don't - just in case it leaves the
569 * machine in an unusable condition.
570 */
571 if (HAS_HW_CONTEXTS(dev)) {
572 int reset = intel_gpu_reset(dev_priv, ALL_ENGINES);
573 WARN_ON(reset && reset != -ENODEV);
574 }
575
576 mutex_lock(&dev->struct_mutex);
577 i915_gem_reset(dev);
578 i915_gem_cleanup_engines(dev);
579 i915_gem_context_fini(dev);
580 mutex_unlock(&dev->struct_mutex);
581
582 WARN_ON(!list_empty(&to_i915(dev)->context_list));
583}
584
585static int i915_load_modeset_init(struct drm_device *dev)
586{
fac5e23e 587 struct drm_i915_private *dev_priv = to_i915(dev);
0673ad47
CW		 588 int ret;
589
590 if (i915_inject_load_failure())
591 return -ENODEV;
592
593 ret = intel_bios_init(dev_priv);
594 if (ret)
595 DRM_INFO("failed to find VBIOS tables\n");
596
597 /* If we have > 1 VGA cards, then we need to arbitrate access
598 * to the common VGA resources.
599 *
600 * If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA),
601 * then we do not take part in VGA arbitration and the
602 * vga_client_register() fails with -ENODEV.
603 */
604 ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode);
605 if (ret && ret != -ENODEV)
606 goto out;
607
608 intel_register_dsm_handler();
609
610 ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops, false);
611 if (ret)
612 goto cleanup_vga_client;
613
614 /* must happen before intel_power_domains_init_hw() on VLV/CHV */
615 intel_update_rawclk(dev_priv);
616
617 intel_power_domains_init_hw(dev_priv, false);
618
619 intel_csr_ucode_init(dev_priv);
620
621 ret = intel_irq_install(dev_priv);
622 if (ret)
623 goto cleanup_csr;
624
625 intel_setup_gmbus(dev);
626
627 /* Important: The output setup functions called by modeset_init need
628 * working irqs for e.g. gmbus and dp aux transfers. */
629 intel_modeset_init(dev);
630
631 intel_guc_init(dev);
632
633 ret = i915_gem_init(dev);
634 if (ret)
635 goto cleanup_irq;
636
637 intel_modeset_gem_init(dev);
638
639 if (INTEL_INFO(dev)->num_pipes == 0)
640 return 0;
641
642 ret = intel_fbdev_init(dev);
643 if (ret)
644 goto cleanup_gem;
645
646 /* Only enable hotplug handling once the fbdev is fully set up. */
647 intel_hpd_init(dev_priv);
648
649 drm_kms_helper_poll_init(dev);
650
651 return 0;
652
653cleanup_gem:
654 i915_gem_fini(dev);
655cleanup_irq:
656 intel_guc_fini(dev);
657 drm_irq_uninstall(dev);
658 intel_teardown_gmbus(dev);
659cleanup_csr:
660 intel_csr_ucode_fini(dev_priv);
661 intel_power_domains_fini(dev_priv);
662 vga_switcheroo_unregister_client(dev->pdev);
663cleanup_vga_client:
664 vga_client_register(dev->pdev, NULL, NULL, NULL);
665out:
666 return ret;
667}
668
669#if IS_ENABLED(CONFIG_FB)
670static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
671{
672 struct apertures_struct *ap;
91c8a326 673 struct pci_dev *pdev = dev_priv->drm.pdev;
0673ad47
CW		 674 struct i915_ggtt *ggtt = &dev_priv->ggtt;
675 bool primary;
676 int ret;
677
678 ap = alloc_apertures(1);
679 if (!ap)
680 return -ENOMEM;
681
682 ap->ranges[0].base = ggtt->mappable_base;
683 ap->ranges[0].size = ggtt->mappable_end;
684
685 primary =
686 pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
687
688 ret = remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
689
690 kfree(ap);
691
692 return ret;
693}
694#else
695static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
696{
697 return 0;
698}
699#endif
700
701#if !defined(CONFIG_VGA_CONSOLE)
702static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv)
703{
704 return 0;
705}
706#elif !defined(CONFIG_DUMMY_CONSOLE)
707static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv)
708{
709 return -ENODEV;
710}
711#else
712static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv)
713{
714 int ret = 0;
715
716 DRM_INFO("Replacing VGA console driver\n");
717
718 console_lock();
719 if (con_is_bound(&vga_con))
720 ret = do_take_over_console(&dummy_con, 0, MAX_NR_CONSOLES - 1, 1);
721 if (ret == 0) {
722 ret = do_unregister_con_driver(&vga_con);
723
724 /* Ignore "already unregistered". */
725 if (ret == -ENODEV)
726 ret = 0;
727 }
728 console_unlock();
729
730 return ret;
731}
732#endif
733
0673ad47
CW		 734static void intel_init_dpio(struct drm_i915_private *dev_priv)
735{
736 /*
737 * IOSF_PORT_DPIO is used for VLV x2 PHY (DP/HDMI B and C),
738 * CHV x1 PHY (DP/HDMI D)
739 * IOSF_PORT_DPIO_2 is used for CHV x2 PHY (DP/HDMI B and C)
740 */
741 if (IS_CHERRYVIEW(dev_priv)) {
742 DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO_2;
743 DPIO_PHY_IOSF_PORT(DPIO_PHY1) = IOSF_PORT_DPIO;
744 } else if (IS_VALLEYVIEW(dev_priv)) {
745 DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO;
746 }
747}
748
749static int i915_workqueues_init(struct drm_i915_private *dev_priv)
750{
751 /*
752 * The i915 workqueue is primarily used for batched retirement of
753 * requests (and thus managing bo) once the task has been completed
754 * by the GPU. i915_gem_retire_requests() is called directly when we
755 * need high-priority retirement, such as waiting for an explicit
756 * bo.
757 *
758 * It is also used for periodic low-priority events, such as
759 * idle-timers and recording error state.
760 *
761 * All tasks on the workqueue are expected to acquire the dev mutex
762 * so there is no point in running more than one instance of the
763 * workqueue at any time. Use an ordered one.
764 */
765 dev_priv->wq = alloc_ordered_workqueue("i915", 0);
766 if (dev_priv->wq == NULL)
767 goto out_err;
768
769 dev_priv->hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0);
770 if (dev_priv->hotplug.dp_wq == NULL)
771 goto out_free_wq;
772
0673ad47
CW		 773 return 0;
774
0673ad47
CW		 775out_free_wq:
776 destroy_workqueue(dev_priv->wq);
777out_err:
778 DRM_ERROR("Failed to allocate workqueues.\n");
779
780 return -ENOMEM;
781}
782
783static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv)
784{
0673ad47
CW		 785 destroy_workqueue(dev_priv->hotplug.dp_wq);
786 destroy_workqueue(dev_priv->wq);
787}
788
789/**
790 * i915_driver_init_early - setup state not requiring device access
791 * @dev_priv: device private
792 *
793 * Initialize everything that is a "SW-only" state, that is state not
794 * requiring accessing the device or exposing the driver via kernel internal
795 * or userspace interfaces. Example steps belonging here: lock initialization,
796 * system memory allocation, setting up device specific attributes and
797 * function hooks not requiring accessing the device.
798 */
799static int i915_driver_init_early(struct drm_i915_private *dev_priv,
800 const struct pci_device_id *ent)
801{
802 const struct intel_device_info *match_info =
803 (struct intel_device_info *)ent->driver_data;
804 struct intel_device_info *device_info;
805 int ret = 0;
806
807 if (i915_inject_load_failure())
808 return -ENODEV;
809
810 /* Setup the write-once "constant" device info */
94b4f3ba 811 device_info = mkwrite_device_info(dev_priv);
0673ad47
CW		 812 memcpy(device_info, match_info, sizeof(*device_info));
813 device_info->device_id = dev_priv->drm.pdev->device;
814
815 BUG_ON(device_info->gen > sizeof(device_info->gen_mask) * BITS_PER_BYTE);
816 device_info->gen_mask = BIT(device_info->gen - 1);
817
818 spin_lock_init(&dev_priv->irq_lock);
819 spin_lock_init(&dev_priv->gpu_error.lock);
820 mutex_init(&dev_priv->backlight_lock);
821 spin_lock_init(&dev_priv->uncore.lock);
822 spin_lock_init(&dev_priv->mm.object_stat_lock);
823 spin_lock_init(&dev_priv->mmio_flip_lock);
824 mutex_init(&dev_priv->sb_lock);
825 mutex_init(&dev_priv->modeset_restore_lock);
826 mutex_init(&dev_priv->av_mutex);
827 mutex_init(&dev_priv->wm.wm_mutex);
828 mutex_init(&dev_priv->pps_mutex);
829
830 ret = i915_workqueues_init(dev_priv);
831 if (ret < 0)
832 return ret;
833
834 ret = intel_gvt_init(dev_priv);
835 if (ret < 0)
836 goto err_workqueues;
837
838 /* This must be called before any calls to HAS_PCH_* */
839 intel_detect_pch(&dev_priv->drm);
840
841 intel_pm_setup(&dev_priv->drm);
842 intel_init_dpio(dev_priv);
843 intel_power_domains_init(dev_priv);
844 intel_irq_init(dev_priv);
845 intel_init_display_hooks(dev_priv);
846 intel_init_clock_gating_hooks(dev_priv);
847 intel_init_audio_hooks(dev_priv);
848 i915_gem_load_init(&dev_priv->drm);
849
850 intel_display_crc_init(&dev_priv->drm);
851
94b4f3ba 852 intel_device_info_dump(dev_priv);
0673ad47
CW		 853
854 /* Not all pre-production machines fall into this category, only the
855 * very first ones. Almost everything should work, except for maybe
856 * suspend/resume. And we don't implement workarounds that affect only
857 * pre-production machines. */
858 if (IS_HSW_EARLY_SDV(dev_priv))
859 DRM_INFO("This is an early pre-production Haswell machine. "
860 "It may not be fully functional.\n");
861
862 return 0;
863
864err_workqueues:
865 i915_workqueues_cleanup(dev_priv);
866 return ret;
867}
868
869/**
870 * i915_driver_cleanup_early - cleanup the setup done in i915_driver_init_early()
871 * @dev_priv: device private
872 */
873static void i915_driver_cleanup_early(struct drm_i915_private *dev_priv)
874{
91c8a326 875 i915_gem_load_cleanup(&dev_priv->drm);
0673ad47
CW		 876 i915_workqueues_cleanup(dev_priv);
877}
878
879static int i915_mmio_setup(struct drm_device *dev)
880{
881 struct drm_i915_private *dev_priv = to_i915(dev);
882 int mmio_bar;
883 int mmio_size;
884
885 mmio_bar = IS_GEN2(dev) ? 1 : 0;
886 /*
887 * Before gen4, the registers and the GTT are behind different BARs.
888 * However, from gen4 onwards, the registers and the GTT are shared
889 * in the same BAR, so we want to restrict this ioremap from
890 * clobbering the GTT which we want ioremap_wc instead. Fortunately,
891 * the register BAR remains the same size for all the earlier
892 * generations up to Ironlake.
893 */
894 if (INTEL_INFO(dev)->gen < 5)
895 mmio_size = 512 * 1024;
896 else
897 mmio_size = 2 * 1024 * 1024;
898 dev_priv->regs = pci_iomap(dev->pdev, mmio_bar, mmio_size);
899 if (dev_priv->regs == NULL) {
900 DRM_ERROR("failed to map registers\n");
901
902 return -EIO;
903 }
904
905 /* Try to make sure MCHBAR is enabled before poking at it */
906 intel_setup_mchbar(dev);
907
908 return 0;
909}
910
911static void i915_mmio_cleanup(struct drm_device *dev)
912{
913 struct drm_i915_private *dev_priv = to_i915(dev);
914
915 intel_teardown_mchbar(dev);
916 pci_iounmap(dev->pdev, dev_priv->regs);
917}
918
919/**
920 * i915_driver_init_mmio - setup device MMIO
921 * @dev_priv: device private
922 *
923 * Setup minimal device state necessary for MMIO accesses later in the
924 * initialization sequence. The setup here should avoid any other device-wide
925 * side effects or exposing the driver via kernel internal or user space
926 * interfaces.
927 */
928static int i915_driver_init_mmio(struct drm_i915_private *dev_priv)
929{
91c8a326 930 struct drm_device *dev = &dev_priv->drm;
0673ad47
CW		 931 int ret;
932
933 if (i915_inject_load_failure())
934 return -ENODEV;
935
936 if (i915_get_bridge_dev(dev))
937 return -EIO;
938
939 ret = i915_mmio_setup(dev);
940 if (ret < 0)
941 goto put_bridge;
942
943 intel_uncore_init(dev_priv);
944
945 return 0;
946
947put_bridge:
948 pci_dev_put(dev_priv->bridge_dev);
949
950 return ret;
951}
952
953/**
954 * i915_driver_cleanup_mmio - cleanup the setup done in i915_driver_init_mmio()
955 * @dev_priv: device private
956 */
957static void i915_driver_cleanup_mmio(struct drm_i915_private *dev_priv)
958{
91c8a326 959 struct drm_device *dev = &dev_priv->drm;
0673ad47
CW		 960
961 intel_uncore_fini(dev_priv);
962 i915_mmio_cleanup(dev);
963 pci_dev_put(dev_priv->bridge_dev);
964}
965
94b4f3ba
CW		 966static void intel_sanitize_options(struct drm_i915_private *dev_priv)
967{
968 i915.enable_execlists =
969 intel_sanitize_enable_execlists(dev_priv,
970 i915.enable_execlists);
971
972 /*
973 * i915.enable_ppgtt is read-only, so do an early pass to validate the
974 * user's requested state against the hardware/driver capabilities. We
975 * do this now so that we can print out any log messages once rather
976 * than every time we check intel_enable_ppgtt().
977 */
978 i915.enable_ppgtt =
979 intel_sanitize_enable_ppgtt(dev_priv, i915.enable_ppgtt);
980 DRM_DEBUG_DRIVER("ppgtt mode: %i\n", i915.enable_ppgtt);
39df9190
CW		 981
982 i915.semaphores = intel_sanitize_semaphores(dev_priv, i915.semaphores);
983 DRM_DEBUG_DRIVER("use GPU sempahores? %s\n", yesno(i915.semaphores));
94b4f3ba
CW		 984}
985
0673ad47
CW		 986/**
987 * i915_driver_init_hw - setup state requiring device access
988 * @dev_priv: device private
989 *
990 * Setup state that requires accessing the device, but doesn't require
991 * exposing the driver via kernel internal or userspace interfaces.
992 */
993static int i915_driver_init_hw(struct drm_i915_private *dev_priv)
994{
91c8a326 995 struct drm_device *dev = &dev_priv->drm;
0673ad47
CW		 996 int ret;
997
998 if (i915_inject_load_failure())
999 return -ENODEV;
1000
94b4f3ba
CW		 1001 intel_device_info_runtime_init(dev_priv);
1002
1003 intel_sanitize_options(dev_priv);
0673ad47 1004
97d6d7ab 1005 ret = i915_ggtt_probe_hw(dev_priv);
0673ad47
CW		 1006 if (ret)
1007 return ret;
1008
0673ad47
CW		 1009 /* WARNING: Apparently we must kick fbdev drivers before vgacon,
1010 * otherwise the vga fbdev driver falls over. */
1011 ret = i915_kick_out_firmware_fb(dev_priv);
1012 if (ret) {
1013 DRM_ERROR("failed to remove conflicting framebuffer drivers\n");
1014 goto out_ggtt;
1015 }
1016
1017 ret = i915_kick_out_vgacon(dev_priv);
1018 if (ret) {
1019 DRM_ERROR("failed to remove conflicting VGA console\n");
1020 goto out_ggtt;
1021 }
1022
97d6d7ab 1023 ret = i915_ggtt_init_hw(dev_priv);
0088e522
CW		 1024 if (ret)
1025 return ret;
1026
97d6d7ab 1027 ret = i915_ggtt_enable_hw(dev_priv);
0088e522
CW		 1028 if (ret) {
1029 DRM_ERROR("failed to enable GGTT\n");
1030 goto out_ggtt;
1031 }
1032
0673ad47
CW		 1033 pci_set_master(dev->pdev);
1034
1035 /* overlay on gen2 is broken and can't address above 1G */
1036 if (IS_GEN2(dev)) {
1037 ret = dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(30));
1038 if (ret) {
1039 DRM_ERROR("failed to set DMA mask\n");
1040
1041 goto out_ggtt;
1042 }
1043 }
1044
0673ad47
CW		 1045 /* 965GM sometimes incorrectly writes to hardware status page (HWS)
1046 * using 32bit addressing, overwriting memory if HWS is located
1047 * above 4GB.
1048 *
1049 * The documentation also mentions an issue with undefined
1050 * behaviour if any general state is accessed within a page above 4GB,
1051 * which also needs to be handled carefully.
1052 */
1053 if (IS_BROADWATER(dev) || IS_CRESTLINE(dev)) {
1054 ret = dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(32));
1055
1056 if (ret) {
1057 DRM_ERROR("failed to set DMA mask\n");
1058
1059 goto out_ggtt;
1060 }
1061 }
1062
0673ad47
CW		 1063 pm_qos_add_request(&dev_priv->pm_qos, PM_QOS_CPU_DMA_LATENCY,
1064 PM_QOS_DEFAULT_VALUE);
1065
1066 intel_uncore_sanitize(dev_priv);
1067
1068 intel_opregion_setup(dev_priv);
1069
1070 i915_gem_load_init_fences(dev_priv);
1071
1072 /* On the 945G/GM, the chipset reports the MSI capability on the
1073 * integrated graphics even though the support isn't actually there
1074 * according to the published specs. It doesn't appear to function
1075 * correctly in testing on 945G.
1076 * This may be a side effect of MSI having been made available for PEG
1077 * and the registers being closely associated.
1078 *
1079 * According to chipset errata, on the 965GM, MSI interrupts may
1080 * be lost or delayed, but we use them anyways to avoid
1081 * stuck interrupts on some machines.
1082 */
1083 if (!IS_I945G(dev) && !IS_I945GM(dev)) {
1084 if (pci_enable_msi(dev->pdev) < 0)
1085 DRM_DEBUG_DRIVER("can't enable MSI");
1086 }
1087
1088 return 0;
1089
1090out_ggtt:
97d6d7ab 1091 i915_ggtt_cleanup_hw(dev_priv);
0673ad47
CW		 1092
1093 return ret;
1094}
1095
1096/**
1097 * i915_driver_cleanup_hw - cleanup the setup done in i915_driver_init_hw()
1098 * @dev_priv: device private
1099 */
1100static void i915_driver_cleanup_hw(struct drm_i915_private *dev_priv)
1101{
91c8a326 1102 struct drm_device *dev = &dev_priv->drm;
0673ad47
CW		 1103
1104 if (dev->pdev->msi_enabled)
1105 pci_disable_msi(dev->pdev);
1106
1107 pm_qos_remove_request(&dev_priv->pm_qos);
97d6d7ab 1108 i915_ggtt_cleanup_hw(dev_priv);
0673ad47
CW		 1109}
1110
1111/**
1112 * i915_driver_register - register the driver with the rest of the system
1113 * @dev_priv: device private
1114 *
1115 * Perform any steps necessary to make the driver available via kernel
1116 * internal or userspace interfaces.
1117 */
1118static void i915_driver_register(struct drm_i915_private *dev_priv)
1119{
91c8a326 1120 struct drm_device *dev = &dev_priv->drm;
0673ad47
CW		 1121
1122 i915_gem_shrinker_init(dev_priv);
1123
1124 /*
1125 * Notify a valid surface after modesetting,
1126 * when running inside a VM.
1127 */
1128 if (intel_vgpu_active(dev_priv))
1129 I915_WRITE(vgtif_reg(display_ready), VGT_DRV_DISPLAY_READY);
1130
1131 /* Reveal our presence to userspace */
1132 if (drm_dev_register(dev, 0) == 0) {
1133 i915_debugfs_register(dev_priv);
1134 i915_setup_sysfs(dev);
1135 } else
1136 DRM_ERROR("Failed to register driver for userspace access!\n");
1137
1138 if (INTEL_INFO(dev_priv)->num_pipes) {
1139 /* Must be done after probing outputs */
1140 intel_opregion_register(dev_priv);
1141 acpi_video_register();
1142 }
1143
1144 if (IS_GEN5(dev_priv))
1145 intel_gpu_ips_init(dev_priv);
1146
1147 i915_audio_component_init(dev_priv);
1148
1149 /*
1150 * Some ports require correctly set-up hpd registers for detection to
1151 * work properly (leading to ghost connected connector status), e.g. VGA
1152 * on gm45. Hence we can only set up the initial fbdev config after hpd
1153 * irqs are fully enabled. We do it last so that the async config
1154 * cannot run before the connectors are registered.
1155 */
1156 intel_fbdev_initial_config_async(dev);
1157}
1158
1159/**
1160 * i915_driver_unregister - cleanup the registration done in i915_driver_regiser()
1161 * @dev_priv: device private
1162 */
1163static void i915_driver_unregister(struct drm_i915_private *dev_priv)
1164{
1165 i915_audio_component_cleanup(dev_priv);
1166
1167 intel_gpu_ips_teardown();
1168 acpi_video_unregister();
1169 intel_opregion_unregister(dev_priv);
1170
91c8a326 1171 i915_teardown_sysfs(&dev_priv->drm);
0673ad47 1172 i915_debugfs_unregister(dev_priv);
91c8a326 1173 drm_dev_unregister(&dev_priv->drm);
0673ad47
CW		 1174
1175 i915_gem_shrinker_cleanup(dev_priv);
1176}
1177
1178/**
1179 * i915_driver_load - setup chip and create an initial config
1180 * @dev: DRM device
1181 * @flags: startup flags
1182 *
1183 * The driver load routine has to do several things:
1184 * - drive output discovery via intel_modeset_init()
1185 * - initialize the memory manager
1186 * - allocate initial config memory
1187 * - setup the DRM framebuffer with the allocated memory
1188 */
42f5551d 1189int i915_driver_load(struct pci_dev *pdev, const struct pci_device_id *ent)
0673ad47
CW		 1190{
1191 struct drm_i915_private *dev_priv;
1192 int ret;
7d87a7f7 1193
a09d0ba1
CW		 1194 if (i915.nuclear_pageflip)
1195 driver.driver_features |= DRIVER_ATOMIC;
1196
0673ad47
CW		 1197 ret = -ENOMEM;
1198 dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
1199 if (dev_priv)
1200 ret = drm_dev_init(&dev_priv->drm, &driver, &pdev->dev);
1201 if (ret) {
1202 dev_printk(KERN_ERR, &pdev->dev,
1203 "[" DRM_NAME ":%s] allocation failed\n", __func__);
1204 kfree(dev_priv);
1205 return ret;
1206 }
72bbf0af 1207
0673ad47
CW		 1208 dev_priv->drm.pdev = pdev;
1209 dev_priv->drm.dev_private = dev_priv;
719388e1 1210
0673ad47
CW		 1211 ret = pci_enable_device(pdev);
1212 if (ret)
1213 goto out_free_priv;
1347f5b4 1214
0673ad47 1215 pci_set_drvdata(pdev, &dev_priv->drm);
ef11bdb3 1216
0673ad47
CW		 1217 ret = i915_driver_init_early(dev_priv, ent);
1218 if (ret < 0)
1219 goto out_pci_disable;
ef11bdb3 1220
0673ad47 1221 intel_runtime_pm_get(dev_priv);
1da177e4 1222
0673ad47
CW		 1223 ret = i915_driver_init_mmio(dev_priv);
1224 if (ret < 0)
1225 goto out_runtime_pm_put;
79e53945 1226
0673ad47
CW		 1227 ret = i915_driver_init_hw(dev_priv);
1228 if (ret < 0)
1229 goto out_cleanup_mmio;
30c964a6
RB		 1230
1231 /*
0673ad47
CW		 1232 * TODO: move the vblank init and parts of modeset init steps into one
1233 * of the i915_driver_init_/i915_driver_register functions according
1234 * to the role/effect of the given init step.
30c964a6 1235 */
0673ad47 1236 if (INTEL_INFO(dev_priv)->num_pipes) {
91c8a326 1237 ret = drm_vblank_init(&dev_priv->drm,
0673ad47
CW		 1238 INTEL_INFO(dev_priv)->num_pipes);
1239 if (ret)
1240 goto out_cleanup_hw;
30c964a6
RB		 1241 }
1242
91c8a326 1243 ret = i915_load_modeset_init(&dev_priv->drm);
0673ad47
CW		 1244 if (ret < 0)
1245 goto out_cleanup_vblank;
1246
1247 i915_driver_register(dev_priv);
1248
1249 intel_runtime_pm_enable(dev_priv);
1250
1251 intel_runtime_pm_put(dev_priv);
1252
1253 return 0;
1254
1255out_cleanup_vblank:
91c8a326 1256 drm_vblank_cleanup(&dev_priv->drm);
0673ad47
CW		 1257out_cleanup_hw:
1258 i915_driver_cleanup_hw(dev_priv);
1259out_cleanup_mmio:
1260 i915_driver_cleanup_mmio(dev_priv);
1261out_runtime_pm_put:
1262 intel_runtime_pm_put(dev_priv);
1263 i915_driver_cleanup_early(dev_priv);
1264out_pci_disable:
1265 pci_disable_device(pdev);
1266out_free_priv:
1267 i915_load_error(dev_priv, "Device initialization failed (%d)\n", ret);
1268 drm_dev_unref(&dev_priv->drm);
30c964a6
RB		 1269 return ret;
1270}
1271
42f5551d 1272void i915_driver_unload(struct drm_device *dev)
3bad0781 1273{
fac5e23e 1274 struct drm_i915_private *dev_priv = to_i915(dev);
3bad0781 1275
0673ad47
CW		 1276 intel_fbdev_fini(dev);
1277
42f5551d
CW		 1278 if (i915_gem_suspend(dev))
1279 DRM_ERROR("failed to idle hardware; continuing to unload!\n");
ce1bb329 1280
0673ad47
CW		 1281 intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
1282
1283 i915_driver_unregister(dev_priv);
1284
1285 drm_vblank_cleanup(dev);
1286
1287 intel_modeset_cleanup(dev);
1288
3bad0781 1289 /*
0673ad47
CW		 1290 * free the memory space allocated for the child device
1291 * config parsed from VBT
3bad0781 1292 */
0673ad47
CW		 1293 if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) {
1294 kfree(dev_priv->vbt.child_dev);
1295 dev_priv->vbt.child_dev = NULL;
1296 dev_priv->vbt.child_dev_num = 0;
1297 }
1298 kfree(dev_priv->vbt.sdvo_lvds_vbt_mode);
1299 dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
1300 kfree(dev_priv->vbt.lfp_lvds_vbt_mode);
1301 dev_priv->vbt.lfp_lvds_vbt_mode = NULL;
3bad0781 1302
0673ad47
CW		 1303 vga_switcheroo_unregister_client(dev->pdev);
1304 vga_client_register(dev->pdev, NULL, NULL, NULL);
bcdb72ac 1305
0673ad47 1306 intel_csr_ucode_fini(dev_priv);
bcdb72ac 1307
0673ad47
CW		 1308 /* Free error state after interrupts are fully disabled. */
1309 cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work);
1310 i915_destroy_error_state(dev);
1311
1312 /* Flush any outstanding unpin_work. */
b7137e0c 1313 drain_workqueue(dev_priv->wq);
0673ad47
CW		 1314
1315 intel_guc_fini(dev);
1316 i915_gem_fini(dev);
1317 intel_fbc_cleanup_cfb(dev_priv);
1318
1319 intel_power_domains_fini(dev_priv);
1320
1321 i915_driver_cleanup_hw(dev_priv);
1322 i915_driver_cleanup_mmio(dev_priv);
1323
1324 intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
1325
1326 i915_driver_cleanup_early(dev_priv);
3bad0781
ZW		 1327}
1328
0673ad47 1329static int i915_driver_open(struct drm_device *dev, struct drm_file *file)
2911a35b 1330{
0673ad47 1331 int ret;
2911a35b 1332
0673ad47
CW		 1333 ret = i915_gem_open(dev, file);
1334 if (ret)
1335 return ret;
2911a35b 1336
0673ad47
CW		 1337 return 0;
1338}
71386ef9 1339
0673ad47
CW		 1340/**
1341 * i915_driver_lastclose - clean up after all DRM clients have exited
1342 * @dev: DRM device
1343 *
1344 * Take care of cleaning up after all DRM clients have exited. In the
1345 * mode setting case, we want to restore the kernel's initial mode (just
1346 * in case the last client left us in a bad state).
1347 *
1348 * Additionally, in the non-mode setting case, we'll tear down the GTT
1349 * and DMA structures, since the kernel won't be using them, and clea
1350 * up any GEM state.
1351 */
1352static void i915_driver_lastclose(struct drm_device *dev)
1353{
1354 intel_fbdev_restore_mode(dev);
1355 vga_switcheroo_process_delayed_switch();
1356}
2911a35b 1357
0673ad47
CW		 1358static void i915_driver_preclose(struct drm_device *dev, struct drm_file *file)
1359{
1360 mutex_lock(&dev->struct_mutex);
1361 i915_gem_context_close(dev, file);
1362 i915_gem_release(dev, file);
1363 mutex_unlock(&dev->struct_mutex);
1364}
1365
1366static void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
1367{
1368 struct drm_i915_file_private *file_priv = file->driver_priv;
1369
1370 kfree(file_priv);
2911a35b
BW		 1371}
1372
07f9cd0b
ID		 1373static void intel_suspend_encoders(struct drm_i915_private *dev_priv)
1374{
91c8a326 1375 struct drm_device *dev = &dev_priv->drm;
19c8054c 1376 struct intel_encoder *encoder;
07f9cd0b
ID		 1377
1378 drm_modeset_lock_all(dev);
19c8054c
JN		 1379 for_each_intel_encoder(dev, encoder)
1380 if (encoder->suspend)
1381 encoder->suspend(encoder);
07f9cd0b
ID		 1382 drm_modeset_unlock_all(dev);
1383}
1384
1a5df187
PZ		 1385static int vlv_resume_prepare(struct drm_i915_private *dev_priv,
1386 bool rpm_resume);
507e126e 1387static int vlv_suspend_complete(struct drm_i915_private *dev_priv);
f75a1985 1388
bc87229f
ID		 1389static bool suspend_to_idle(struct drm_i915_private *dev_priv)
1390{
1391#if IS_ENABLED(CONFIG_ACPI_SLEEP)
1392 if (acpi_target_system_state() < ACPI_STATE_S3)
1393 return true;
1394#endif
1395 return false;
1396}
ebc32824 1397
5e365c39 1398static int i915_drm_suspend(struct drm_device *dev)
ba8bbcf6 1399{
fac5e23e 1400 struct drm_i915_private *dev_priv = to_i915(dev);
e5747e3a 1401 pci_power_t opregion_target_state;
d5818938 1402 int error;
61caf87c 1403
b8efb17b
ZR		 1404 /* ignore lid events during suspend */
1405 mutex_lock(&dev_priv->modeset_restore_lock);
1406 dev_priv->modeset_restore = MODESET_SUSPENDED;
1407 mutex_unlock(&dev_priv->modeset_restore_lock);
1408
1f814dac
ID		 1409 disable_rpm_wakeref_asserts(dev_priv);
1410
c67a470b
PZ		 1411 /* We do a lot of poking in a lot of registers, make sure they work
1412 * properly. */
da7e29bd 1413 intel_display_set_init_power(dev_priv, true);
cb10799c 1414
5bcf719b
DA		 1415 drm_kms_helper_poll_disable(dev);
1416
ba8bbcf6 1417 pci_save_state(dev->pdev);
ba8bbcf6 1418
d5818938
DV		 1419 error = i915_gem_suspend(dev);
1420 if (error) {
1421 dev_err(&dev->pdev->dev,
1422 "GEM idle failed, resume might fail\n");
1f814dac 1423 goto out;
d5818938 1424 }
db1b76ca 1425
a1c41994
AD		 1426 intel_guc_suspend(dev);
1427
6b72d486 1428 intel_display_suspend(dev);
2eb5252e 1429
d5818938 1430 intel_dp_mst_suspend(dev);
7d708ee4 1431
d5818938
DV		 1432 intel_runtime_pm_disable_interrupts(dev_priv);
1433 intel_hpd_cancel_work(dev_priv);
09b64267 1434
d5818938 1435 intel_suspend_encoders(dev_priv);
0e32b39c 1436
d5818938 1437 intel_suspend_hw(dev);
5669fcac 1438
828c7908
BW		 1439 i915_gem_suspend_gtt_mappings(dev);
1440
9e06dd39
JB		 1441 i915_save_state(dev);
1442
bc87229f 1443 opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold;
6f9f4b7a 1444 intel_opregion_notify_adapter(dev_priv, opregion_target_state);
e5747e3a 1445
dc97997a 1446 intel_uncore_forcewake_reset(dev_priv, false);
03d92e47 1447 intel_opregion_unregister(dev_priv);
8ee1c3db 1448
82e3b8c1 1449 intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true);
3fa016a0 1450
62d5d69b
MK		 1451 dev_priv->suspend_count++;
1452
85e90679
KCA		 1453 intel_display_set_init_power(dev_priv, false);
1454
f74ed08d 1455 intel_csr_ucode_suspend(dev_priv);
f514c2d8 1456
1f814dac
ID		 1457out:
1458 enable_rpm_wakeref_asserts(dev_priv);
1459
1460 return error;
84b79f8d
RW		 1461}
1462
ab3be73f 1463static int i915_drm_suspend_late(struct drm_device *drm_dev, bool hibernation)
c3c09c95 1464{
fac5e23e 1465 struct drm_i915_private *dev_priv = to_i915(drm_dev);
bc87229f 1466 bool fw_csr;
c3c09c95
ID		 1467 int ret;
1468
1f814dac
ID		 1469 disable_rpm_wakeref_asserts(dev_priv);
1470
a7c8125f
ID		 1471 fw_csr = !IS_BROXTON(dev_priv) &&
1472 suspend_to_idle(dev_priv) && dev_priv->csr.dmc_payload;
bc87229f
ID		 1473 /*
1474 * In case of firmware assisted context save/restore don't manually
1475 * deinit the power domains. This also means the CSR/DMC firmware will
1476 * stay active, it will power down any HW resources as required and
1477 * also enable deeper system power states that would be blocked if the
1478 * firmware was inactive.
1479 */
1480 if (!fw_csr)
1481 intel_power_domains_suspend(dev_priv);
73dfc227 1482
507e126e 1483 ret = 0;
b8aea3d1 1484 if (IS_BROXTON(dev_priv))
507e126e 1485 bxt_enable_dc9(dev_priv);
b8aea3d1 1486 else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
507e126e
ID		 1487 hsw_enable_pc8(dev_priv);
1488 else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
1489 ret = vlv_suspend_complete(dev_priv);
c3c09c95
ID		 1490
1491 if (ret) {
1492 DRM_ERROR("Suspend complete failed: %d\n", ret);
bc87229f
ID		 1493 if (!fw_csr)
1494 intel_power_domains_init_hw(dev_priv, true);
c3c09c95 1495
1f814dac 1496 goto out;
c3c09c95
ID		 1497 }
1498
1499 pci_disable_device(drm_dev->pdev);
ab3be73f 1500 /*
54875571 1501 * During hibernation on some platforms the BIOS may try to access
ab3be73f
ID		 1502 * the device even though it's already in D3 and hang the machine. So
1503 * leave the device in D0 on those platforms and hope the BIOS will
54875571
ID		 1504 * power down the device properly. The issue was seen on multiple old
1505 * GENs with different BIOS vendors, so having an explicit blacklist
1506 * is inpractical; apply the workaround on everything pre GEN6. The
1507 * platforms where the issue was seen:
1508 * Lenovo Thinkpad X301, X61s, X60, T60, X41
1509 * Fujitsu FSC S7110
1510 * Acer Aspire 1830T
ab3be73f 1511 */
54875571 1512 if (!(hibernation && INTEL_INFO(dev_priv)->gen < 6))
ab3be73f 1513 pci_set_power_state(drm_dev->pdev, PCI_D3hot);
c3c09c95 1514
bc87229f
ID		 1515 dev_priv->suspended_to_idle = suspend_to_idle(dev_priv);
1516
1f814dac
ID		 1517out:
1518 enable_rpm_wakeref_asserts(dev_priv);
1519
1520 return ret;
c3c09c95
ID		 1521}
1522
1751fcf9 1523int i915_suspend_switcheroo(struct drm_device *dev, pm_message_t state)
84b79f8d
RW		 1524{
1525 int error;
1526
ded8b07d 1527 if (!dev) {
84b79f8d
RW		 1528 DRM_ERROR("dev: %p\n", dev);
1529 DRM_ERROR("DRM not initialized, aborting suspend.\n");
1530 return -ENODEV;
1531 }
1532
0b14cbd2
ID		 1533 if (WARN_ON_ONCE(state.event != PM_EVENT_SUSPEND &&
1534 state.event != PM_EVENT_FREEZE))
1535 return -EINVAL;
5bcf719b
DA		 1536
1537 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1538 return 0;
6eecba33 1539
5e365c39 1540 error = i915_drm_suspend(dev);
84b79f8d
RW		 1541 if (error)
1542 return error;
1543
ab3be73f 1544 return i915_drm_suspend_late(dev, false);
ba8bbcf6
JB		 1545}
1546
5e365c39 1547static int i915_drm_resume(struct drm_device *dev)
76c4b250 1548{
fac5e23e 1549 struct drm_i915_private *dev_priv = to_i915(dev);
ac840ae5 1550 int ret;
9d49c0ef 1551
1f814dac
ID		 1552 disable_rpm_wakeref_asserts(dev_priv);
1553
97d6d7ab 1554 ret = i915_ggtt_enable_hw(dev_priv);
ac840ae5
VS		 1555 if (ret)
1556 DRM_ERROR("failed to re-enable GGTT\n");
1557
f74ed08d
ID		 1558 intel_csr_ucode_resume(dev_priv);
1559
5ab57c70 1560 i915_gem_resume(dev);
9d49c0ef 1561
61caf87c 1562 i915_restore_state(dev);
6f9f4b7a 1563 intel_opregion_setup(dev_priv);
61caf87c 1564
d5818938
DV		 1565 intel_init_pch_refclk(dev);
1566 drm_mode_config_reset(dev);
1833b134 1567
364aece0
PA		 1568 /*
1569 * Interrupts have to be enabled before any batches are run. If not the
1570 * GPU will hang. i915_gem_init_hw() will initiate batches to
1571 * update/restore the context.
1572 *
1573 * Modeset enabling in intel_modeset_init_hw() also needs working
1574 * interrupts.
1575 */
1576 intel_runtime_pm_enable_interrupts(dev_priv);
1577
d5818938
DV		 1578 mutex_lock(&dev->struct_mutex);
1579 if (i915_gem_init_hw(dev)) {
1580 DRM_ERROR("failed to re-initialize GPU, declaring wedged!\n");
338d0eea 1581 atomic_or(I915_WEDGED, &dev_priv->gpu_error.reset_counter);
d5818938
DV		 1582 }
1583 mutex_unlock(&dev->struct_mutex);
226485e9 1584
a1c41994
AD		 1585 intel_guc_resume(dev);
1586
d5818938 1587 intel_modeset_init_hw(dev);
24576d23 1588
d5818938
DV		 1589 spin_lock_irq(&dev_priv->irq_lock);
1590 if (dev_priv->display.hpd_irq_setup)
91d14251 1591 dev_priv->display.hpd_irq_setup(dev_priv);
d5818938 1592 spin_unlock_irq(&dev_priv->irq_lock);
0e32b39c 1593
d5818938 1594 intel_dp_mst_resume(dev);
e7d6f7d7 1595
a16b7658
L		 1596 intel_display_resume(dev);
1597
d5818938
DV		 1598 /*
1599 * ... but also need to make sure that hotplug processing
1600 * doesn't cause havoc. Like in the driver load code we don't
1601 * bother with the tiny race here where we might loose hotplug
1602 * notifications.
1603 * */
1604 intel_hpd_init(dev_priv);
1605 /* Config may have changed between suspend and resume */
1606 drm_helper_hpd_irq_event(dev);
1daed3fb 1607
03d92e47 1608 intel_opregion_register(dev_priv);
44834a67 1609
82e3b8c1 1610 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false);
073f34d9 1611
b8efb17b
ZR		 1612 mutex_lock(&dev_priv->modeset_restore_lock);
1613 dev_priv->modeset_restore = MODESET_DONE;
1614 mutex_unlock(&dev_priv->modeset_restore_lock);
8a187455 1615
6f9f4b7a 1616 intel_opregion_notify_adapter(dev_priv, PCI_D0);
e5747e3a 1617
54b4f68f 1618 intel_autoenable_gt_powersave(dev_priv);
ee6f280e
ID		 1619 drm_kms_helper_poll_enable(dev);
1620
1f814dac
ID		 1621 enable_rpm_wakeref_asserts(dev_priv);
1622
074c6ada 1623 return 0;
84b79f8d
RW		 1624}
1625
5e365c39 1626static int i915_drm_resume_early(struct drm_device *dev)
84b79f8d 1627{
fac5e23e 1628 struct drm_i915_private *dev_priv = to_i915(dev);
44410cd0 1629 int ret;
36d61e67 1630
76c4b250
ID		 1631 /*
1632 * We have a resume ordering issue with the snd-hda driver also
1633 * requiring our device to be power up. Due to the lack of a
1634 * parent/child relationship we currently solve this with an early
1635 * resume hook.
1636 *
1637 * FIXME: This should be solved with a special hdmi sink device or
1638 * similar so that power domains can be employed.
1639 */
44410cd0
ID		 1640
1641 /*
1642 * Note that we need to set the power state explicitly, since we
1643 * powered off the device during freeze and the PCI core won't power
1644 * it back up for us during thaw. Powering off the device during
1645 * freeze is not a hard requirement though, and during the
1646 * suspend/resume phases the PCI core makes sure we get here with the
1647 * device powered on. So in case we change our freeze logic and keep
1648 * the device powered we can also remove the following set power state
1649 * call.
1650 */
1651 ret = pci_set_power_state(dev->pdev, PCI_D0);
1652 if (ret) {
1653 DRM_ERROR("failed to set PCI D0 power state (%d)\n", ret);
1654 goto out;
1655 }
1656
1657 /*
1658 * Note that pci_enable_device() first enables any parent bridge
1659 * device and only then sets the power state for this device. The
1660 * bridge enabling is a nop though, since bridge devices are resumed
1661 * first. The order of enabling power and enabling the device is
1662 * imposed by the PCI core as described above, so here we preserve the
1663 * same order for the freeze/thaw phases.
1664 *
1665 * TODO: eventually we should remove pci_disable_device() /
1666 * pci_enable_enable_device() from suspend/resume. Due to how they
1667 * depend on the device enable refcount we can't anyway depend on them
1668 * disabling/enabling the device.
1669 */
bc87229f
ID		 1670 if (pci_enable_device(dev->pdev)) {
1671 ret = -EIO;
1672 goto out;
1673 }
84b79f8d
RW		 1674
1675 pci_set_master(dev->pdev);
1676
1f814dac
ID		 1677 disable_rpm_wakeref_asserts(dev_priv);
1678
666a4537 1679 if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
1a5df187 1680 ret = vlv_resume_prepare(dev_priv, false);
36d61e67 1681 if (ret)
ff0b187f
DL		 1682 DRM_ERROR("Resume prepare failed: %d, continuing anyway\n",
1683 ret);
36d61e67 1684
dc97997a 1685 intel_uncore_early_sanitize(dev_priv, true);
efee833a 1686
dc97997a 1687 if (IS_BROXTON(dev_priv)) {
da2f41d1
ID		 1688 if (!dev_priv->suspended_to_idle)
1689 gen9_sanitize_dc_state(dev_priv);
507e126e 1690 bxt_disable_dc9(dev_priv);
da2f41d1 1691 } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
a9a6b73a 1692 hsw_disable_pc8(dev_priv);
da2f41d1 1693 }
efee833a 1694
dc97997a 1695 intel_uncore_sanitize(dev_priv);
bc87229f 1696
a7c8125f
ID		 1697 if (IS_BROXTON(dev_priv) ||
1698 !(dev_priv->suspended_to_idle && dev_priv->csr.dmc_payload))
bc87229f
ID		 1699 intel_power_domains_init_hw(dev_priv, true);
1700
6e35e8ab
ID		 1701 enable_rpm_wakeref_asserts(dev_priv);
1702
bc87229f
ID		 1703out:
1704 dev_priv->suspended_to_idle = false;
36d61e67
ID		 1705
1706 return ret;
76c4b250
ID		 1707}
1708
1751fcf9 1709int i915_resume_switcheroo(struct drm_device *dev)
76c4b250 1710{
50a0072f 1711 int ret;
76c4b250 1712
097dd837
ID		 1713 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1714 return 0;
1715
5e365c39 1716 ret = i915_drm_resume_early(dev);
50a0072f
ID		 1717 if (ret)
1718 return ret;
1719
5a17514e
ID		 1720 return i915_drm_resume(dev);
1721}
1722
11ed50ec 1723/**
f3953dcb 1724 * i915_reset - reset chip after a hang
11ed50ec 1725 * @dev: drm device to reset
11ed50ec
BG		 1726 *
1727 * Reset the chip. Useful if a hang is detected. Returns zero on successful
1728 * reset or otherwise an error code.
1729 *
1730 * Procedure is fairly simple:
1731 * - reset the chip using the reset reg
1732 * - re-init context state
1733 * - re-init hardware status page
1734 * - re-init ring buffer
1735 * - re-init interrupt state
1736 * - re-init display
1737 */
c033666a 1738int i915_reset(struct drm_i915_private *dev_priv)
11ed50ec 1739{
91c8a326 1740 struct drm_device *dev = &dev_priv->drm;
d98c52cf
CW		 1741 struct i915_gpu_error *error = &dev_priv->gpu_error;
1742 unsigned reset_counter;
0573ed4a 1743 int ret;
11ed50ec 1744
d54a02c0 1745 mutex_lock(&dev->struct_mutex);
11ed50ec 1746
d98c52cf
CW		 1747 /* Clear any previous failed attempts at recovery. Time to try again. */
1748 atomic_andnot(I915_WEDGED, &error->reset_counter);
77f01230 1749
d98c52cf
CW		 1750 /* Clear the reset-in-progress flag and increment the reset epoch. */
1751 reset_counter = atomic_inc_return(&error->reset_counter);
1752 if (WARN_ON(__i915_reset_in_progress(reset_counter))) {
1753 ret = -EIO;
1754 goto error;
1755 }
1756
7b4d3a16
CW		 1757 pr_notice("drm/i915: Resetting chip after gpu hang\n");
1758
d98c52cf 1759 i915_gem_reset(dev);
2e7c8ee7 1760
dc97997a 1761 ret = intel_gpu_reset(dev_priv, ALL_ENGINES);
0573ed4a 1762 if (ret) {
804e59a8
CW		 1763 if (ret != -ENODEV)
1764 DRM_ERROR("Failed to reset chip: %i\n", ret);
1765 else
1766 DRM_DEBUG_DRIVER("GPU reset disabled\n");
d98c52cf 1767 goto error;
11ed50ec
BG		 1768 }
1769
1362b776
VS		 1770 intel_overlay_reset(dev_priv);
1771
11ed50ec
BG		 1772 /* Ok, now get things going again... */
1773
1774 /*
1775 * Everything depends on having the GTT running, so we need to start
1776 * there. Fortunately we don't need to do this unless we reset the
1777 * chip at a PCI level.
1778 *
1779 * Next we need to restore the context, but we don't use those
1780 * yet either...
1781 *
1782 * Ring buffer needs to be re-initialized in the KMS case, or if X
1783 * was running at the time of the reset (i.e. we weren't VT
1784 * switched away).
1785 */
33d30a9c 1786 ret = i915_gem_init_hw(dev);
33d30a9c
DV		 1787 if (ret) {
1788 DRM_ERROR("Failed hw init on reset %d\n", ret);
d98c52cf 1789 goto error;
11ed50ec
BG		 1790 }
1791
d98c52cf
CW		 1792 mutex_unlock(&dev->struct_mutex);
1793
33d30a9c
DV		 1794 /*
1795 * rps/rc6 re-init is necessary to restore state lost after the
1796 * reset and the re-install of gt irqs. Skip for ironlake per
1797 * previous concerns that it doesn't respond well to some forms
1798 * of re-init after reset.
1799 */
54b4f68f 1800 intel_autoenable_gt_powersave(dev_priv);
33d30a9c 1801
11ed50ec 1802 return 0;
d98c52cf
CW		 1803
1804error:
1805 atomic_or(I915_WEDGED, &error->reset_counter);
1806 mutex_unlock(&dev->struct_mutex);
1807 return ret;
11ed50ec
BG		 1808}
1809
84b79f8d 1810static int i915_pm_suspend(struct device *dev)
112b715e 1811{
84b79f8d
RW		 1812 struct pci_dev *pdev = to_pci_dev(dev);
1813 struct drm_device *drm_dev = pci_get_drvdata(pdev);
112b715e 1814
ded8b07d 1815 if (!drm_dev) {
84b79f8d
RW		 1816 dev_err(dev, "DRM not initialized, aborting suspend.\n");
1817 return -ENODEV;
1818 }
112b715e 1819
5bcf719b
DA		 1820 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1821 return 0;
1822
5e365c39 1823 return i915_drm_suspend(drm_dev);
76c4b250
ID		 1824}
1825
1826static int i915_pm_suspend_late(struct device *dev)
1827{
91c8a326 1828 struct drm_device *drm_dev = &dev_to_i915(dev)->drm;
76c4b250
ID		 1829
1830 /*
c965d995 1831 * We have a suspend ordering issue with the snd-hda driver also
76c4b250
ID		 1832 * requiring our device to be power up. Due to the lack of a
1833 * parent/child relationship we currently solve this with an late
1834 * suspend hook.
1835 *
1836 * FIXME: This should be solved with a special hdmi sink device or
1837 * similar so that power domains can be employed.
1838 */
1839 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1840 return 0;
112b715e 1841
ab3be73f
ID		 1842 return i915_drm_suspend_late(drm_dev, false);
1843}
1844
1845static int i915_pm_poweroff_late(struct device *dev)
1846{
91c8a326 1847 struct drm_device *drm_dev = &dev_to_i915(dev)->drm;
ab3be73f
ID		 1848
1849 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1850 return 0;
1851
1852 return i915_drm_suspend_late(drm_dev, true);
cbda12d7
ZW		 1853}
1854
76c4b250
ID		 1855static int i915_pm_resume_early(struct device *dev)
1856{
91c8a326 1857 struct drm_device *drm_dev = &dev_to_i915(dev)->drm;
76c4b250 1858
097dd837
ID		 1859 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1860 return 0;
1861
5e365c39 1862 return i915_drm_resume_early(drm_dev);
76c4b250
ID		 1863}
1864
84b79f8d 1865static int i915_pm_resume(struct device *dev)
cbda12d7 1866{
91c8a326 1867 struct drm_device *drm_dev = &dev_to_i915(dev)->drm;
84b79f8d 1868
097dd837
ID		 1869 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1870 return 0;
1871
5a17514e 1872 return i915_drm_resume(drm_dev);
cbda12d7
ZW		 1873}
1874
1f19ac2a
CW		 1875/* freeze: before creating the hibernation_image */
1876static int i915_pm_freeze(struct device *dev)
1877{
1878 return i915_pm_suspend(dev);
1879}
1880
1881static int i915_pm_freeze_late(struct device *dev)
1882{
461fb99c
CW		 1883 int ret;
1884
1885 ret = i915_pm_suspend_late(dev);
1886 if (ret)
1887 return ret;
1888
1889 ret = i915_gem_freeze_late(dev_to_i915(dev));
1890 if (ret)
1891 return ret;
1892
1893 return 0;
1f19ac2a
CW		 1894}
1895
1896/* thaw: called after creating the hibernation image, but before turning off. */
1897static int i915_pm_thaw_early(struct device *dev)
1898{
1899 return i915_pm_resume_early(dev);
1900}
1901
1902static int i915_pm_thaw(struct device *dev)
1903{
1904 return i915_pm_resume(dev);
1905}
1906
1907/* restore: called after loading the hibernation image. */
1908static int i915_pm_restore_early(struct device *dev)
1909{
1910 return i915_pm_resume_early(dev);
1911}
1912
1913static int i915_pm_restore(struct device *dev)
1914{
1915 return i915_pm_resume(dev);
1916}
1917
ddeea5b0
ID		 1918/*
1919 * Save all Gunit registers that may be lost after a D3 and a subsequent
1920 * S0i[R123] transition. The list of registers needing a save/restore is
1921 * defined in the VLV2_S0IXRegs document. This documents marks all Gunit
1922 * registers in the following way:
1923 * - Driver: saved/restored by the driver
1924 * - Punit : saved/restored by the Punit firmware
1925 * - No, w/o marking: no need to save/restore, since the register is R/O or
1926 * used internally by the HW in a way that doesn't depend
1927 * keeping the content across a suspend/resume.
1928 * - Debug : used for debugging
1929 *
1930 * We save/restore all registers marked with 'Driver', with the following
1931 * exceptions:
1932 * - Registers out of use, including also registers marked with 'Debug'.
1933 * These have no effect on the driver's operation, so we don't save/restore
1934 * them to reduce the overhead.
1935 * - Registers that are fully setup by an initialization function called from
1936 * the resume path. For example many clock gating and RPS/RC6 registers.
1937 * - Registers that provide the right functionality with their reset defaults.
1938 *
1939 * TODO: Except for registers that based on the above 3 criteria can be safely
1940 * ignored, we save/restore all others, practically treating the HW context as
1941 * a black-box for the driver. Further investigation is needed to reduce the
1942 * saved/restored registers even further, by following the same 3 criteria.
1943 */
1944static void vlv_save_gunit_s0ix_state(struct drm_i915_private *dev_priv)
1945{
1946 struct vlv_s0ix_state *s = &dev_priv->vlv_s0ix_state;
1947 int i;
1948
1949 /* GAM 0x4000-0x4770 */
1950 s->wr_watermark = I915_READ(GEN7_WR_WATERMARK);
1951 s->gfx_prio_ctrl = I915_READ(GEN7_GFX_PRIO_CTRL);
1952 s->arb_mode = I915_READ(ARB_MODE);
1953 s->gfx_pend_tlb0 = I915_READ(GEN7_GFX_PEND_TLB0);
1954 s->gfx_pend_tlb1 = I915_READ(GEN7_GFX_PEND_TLB1);
1955
1956 for (i = 0; i < ARRAY_SIZE(s->lra_limits); i++)
22dfe79f 1957 s->lra_limits[i] = I915_READ(GEN7_LRA_LIMITS(i));
ddeea5b0
ID		 1958
1959 s->media_max_req_count = I915_READ(GEN7_MEDIA_MAX_REQ_COUNT);
b5f1c97f 1960 s->gfx_max_req_count = I915_READ(GEN7_GFX_MAX_REQ_COUNT);
ddeea5b0
ID		 1961
1962 s->render_hwsp = I915_READ(RENDER_HWS_PGA_GEN7);
1963 s->ecochk = I915_READ(GAM_ECOCHK);
1964 s->bsd_hwsp = I915_READ(BSD_HWS_PGA_GEN7);
1965 s->blt_hwsp = I915_READ(BLT_HWS_PGA_GEN7);
1966
1967 s->tlb_rd_addr = I915_READ(GEN7_TLB_RD_ADDR);
1968
1969 /* MBC 0x9024-0x91D0, 0x8500 */
1970 s->g3dctl = I915_READ(VLV_G3DCTL);
1971 s->gsckgctl = I915_READ(VLV_GSCKGCTL);
1972 s->mbctl = I915_READ(GEN6_MBCTL);
1973
1974 /* GCP 0x9400-0x9424, 0x8100-0x810C */
1975 s->ucgctl1 = I915_READ(GEN6_UCGCTL1);
1976 s->ucgctl3 = I915_READ(GEN6_UCGCTL3);
1977 s->rcgctl1 = I915_READ(GEN6_RCGCTL1);
1978 s->rcgctl2 = I915_READ(GEN6_RCGCTL2);
1979 s->rstctl = I915_READ(GEN6_RSTCTL);
1980 s->misccpctl = I915_READ(GEN7_MISCCPCTL);
1981
1982 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
1983 s->gfxpause = I915_READ(GEN6_GFXPAUSE);
1984 s->rpdeuhwtc = I915_READ(GEN6_RPDEUHWTC);
1985 s->rpdeuc = I915_READ(GEN6_RPDEUC);
1986 s->ecobus = I915_READ(ECOBUS);
1987 s->pwrdwnupctl = I915_READ(VLV_PWRDWNUPCTL);
1988 s->rp_down_timeout = I915_READ(GEN6_RP_DOWN_TIMEOUT);
1989 s->rp_deucsw = I915_READ(GEN6_RPDEUCSW);
1990 s->rcubmabdtmr = I915_READ(GEN6_RCUBMABDTMR);
1991 s->rcedata = I915_READ(VLV_RCEDATA);
1992 s->spare2gh = I915_READ(VLV_SPAREG2H);
1993
1994 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
1995 s->gt_imr = I915_READ(GTIMR);
1996 s->gt_ier = I915_READ(GTIER);
1997 s->pm_imr = I915_READ(GEN6_PMIMR);
1998 s->pm_ier = I915_READ(GEN6_PMIER);
1999
2000 for (i = 0; i < ARRAY_SIZE(s->gt_scratch); i++)
22dfe79f 2001 s->gt_scratch[i] = I915_READ(GEN7_GT_SCRATCH(i));
ddeea5b0
ID		 2002
2003 /* GT SA CZ domain, 0x100000-0x138124 */
2004 s->tilectl = I915_READ(TILECTL);
2005 s->gt_fifoctl = I915_READ(GTFIFOCTL);
2006 s->gtlc_wake_ctrl = I915_READ(VLV_GTLC_WAKE_CTRL);
2007 s->gtlc_survive = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
2008 s->pmwgicz = I915_READ(VLV_PMWGICZ);
2009
2010 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
2011 s->gu_ctl0 = I915_READ(VLV_GU_CTL0);
2012 s->gu_ctl1 = I915_READ(VLV_GU_CTL1);
9c25210f 2013 s->pcbr = I915_READ(VLV_PCBR);
ddeea5b0
ID		 2014 s->clock_gate_dis2 = I915_READ(VLV_GUNIT_CLOCK_GATE2);
2015
2016 /*
2017 * Not saving any of:
2018 * DFT, 0x9800-0x9EC0
2019 * SARB, 0xB000-0xB1FC
2020 * GAC, 0x5208-0x524C, 0x14000-0x14C000
2021 * PCI CFG
2022 */
2023}
2024
2025static void vlv_restore_gunit_s0ix_state(struct drm_i915_private *dev_priv)
2026{
2027 struct vlv_s0ix_state *s = &dev_priv->vlv_s0ix_state;
2028 u32 val;
2029 int i;
2030
2031 /* GAM 0x4000-0x4770 */
2032 I915_WRITE(GEN7_WR_WATERMARK, s->wr_watermark);
2033 I915_WRITE(GEN7_GFX_PRIO_CTRL, s->gfx_prio_ctrl);
2034 I915_WRITE(ARB_MODE, s->arb_mode | (0xffff << 16));
2035 I915_WRITE(GEN7_GFX_PEND_TLB0, s->gfx_pend_tlb0);
2036 I915_WRITE(GEN7_GFX_PEND_TLB1, s->gfx_pend_tlb1);
2037
2038 for (i = 0; i < ARRAY_SIZE(s->lra_limits); i++)
22dfe79f 2039 I915_WRITE(GEN7_LRA_LIMITS(i), s->lra_limits[i]);
ddeea5b0
ID		 2040
2041 I915_WRITE(GEN7_MEDIA_MAX_REQ_COUNT, s->media_max_req_count);
b5f1c97f 2042 I915_WRITE(GEN7_GFX_MAX_REQ_COUNT, s->gfx_max_req_count);
ddeea5b0
ID		 2043
2044 I915_WRITE(RENDER_HWS_PGA_GEN7, s->render_hwsp);
2045 I915_WRITE(GAM_ECOCHK, s->ecochk);
2046 I915_WRITE(BSD_HWS_PGA_GEN7, s->bsd_hwsp);
2047 I915_WRITE(BLT_HWS_PGA_GEN7, s->blt_hwsp);
2048
2049 I915_WRITE(GEN7_TLB_RD_ADDR, s->tlb_rd_addr);
2050
2051 /* MBC 0x9024-0x91D0, 0x8500 */
2052 I915_WRITE(VLV_G3DCTL, s->g3dctl);
2053 I915_WRITE(VLV_GSCKGCTL, s->gsckgctl);
2054 I915_WRITE(GEN6_MBCTL, s->mbctl);
2055
2056 /* GCP 0x9400-0x9424, 0x8100-0x810C */
2057 I915_WRITE(GEN6_UCGCTL1, s->ucgctl1);
2058 I915_WRITE(GEN6_UCGCTL3, s->ucgctl3);
2059 I915_WRITE(GEN6_RCGCTL1, s->rcgctl1);
2060 I915_WRITE(GEN6_RCGCTL2, s->rcgctl2);
2061 I915_WRITE(GEN6_RSTCTL, s->rstctl);
2062 I915_WRITE(GEN7_MISCCPCTL, s->misccpctl);
2063
2064 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
2065 I915_WRITE(GEN6_GFXPAUSE, s->gfxpause);
2066 I915_WRITE(GEN6_RPDEUHWTC, s->rpdeuhwtc);
2067 I915_WRITE(GEN6_RPDEUC, s->rpdeuc);
2068 I915_WRITE(ECOBUS, s->ecobus);
2069 I915_WRITE(VLV_PWRDWNUPCTL, s->pwrdwnupctl);
2070 I915_WRITE(GEN6_RP_DOWN_TIMEOUT,s->rp_down_timeout);
2071 I915_WRITE(GEN6_RPDEUCSW, s->rp_deucsw);
2072 I915_WRITE(GEN6_RCUBMABDTMR, s->rcubmabdtmr);
2073 I915_WRITE(VLV_RCEDATA, s->rcedata);
2074 I915_WRITE(VLV_SPAREG2H, s->spare2gh);
2075
2076 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
2077 I915_WRITE(GTIMR, s->gt_imr);
2078 I915_WRITE(GTIER, s->gt_ier);
2079 I915_WRITE(GEN6_PMIMR, s->pm_imr);
2080 I915_WRITE(GEN6_PMIER, s->pm_ier);
2081
2082 for (i = 0; i < ARRAY_SIZE(s->gt_scratch); i++)
22dfe79f 2083 I915_WRITE(GEN7_GT_SCRATCH(i), s->gt_scratch[i]);
ddeea5b0
ID		 2084
2085 /* GT SA CZ domain, 0x100000-0x138124 */
2086 I915_WRITE(TILECTL, s->tilectl);
2087 I915_WRITE(GTFIFOCTL, s->gt_fifoctl);
2088 /*
2089 * Preserve the GT allow wake and GFX force clock bit, they are not
2090 * be restored, as they are used to control the s0ix suspend/resume
2091 * sequence by the caller.
2092 */
2093 val = I915_READ(VLV_GTLC_WAKE_CTRL);
2094 val &= VLV_GTLC_ALLOWWAKEREQ;
2095 val |= s->gtlc_wake_ctrl & ~VLV_GTLC_ALLOWWAKEREQ;
2096 I915_WRITE(VLV_GTLC_WAKE_CTRL, val);
2097
2098 val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
2099 val &= VLV_GFX_CLK_FORCE_ON_BIT;
2100 val |= s->gtlc_survive & ~VLV_GFX_CLK_FORCE_ON_BIT;
2101 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG, val);
2102
2103 I915_WRITE(VLV_PMWGICZ, s->pmwgicz);
2104
2105 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
2106 I915_WRITE(VLV_GU_CTL0, s->gu_ctl0);
2107 I915_WRITE(VLV_GU_CTL1, s->gu_ctl1);
9c25210f 2108 I915_WRITE(VLV_PCBR, s->pcbr);
ddeea5b0
ID		 2109 I915_WRITE(VLV_GUNIT_CLOCK_GATE2, s->clock_gate_dis2);
2110}
2111
650ad970
ID		 2112int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool force_on)
2113{
2114 u32 val;
2115 int err;
2116
650ad970
ID		 2117 val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
2118 val &= ~VLV_GFX_CLK_FORCE_ON_BIT;
2119 if (force_on)
2120 val |= VLV_GFX_CLK_FORCE_ON_BIT;
2121 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG, val);
2122
2123 if (!force_on)
2124 return 0;
2125
c6ddc5f3
CW		 2126 err = intel_wait_for_register(dev_priv,
2127 VLV_GTLC_SURVIVABILITY_REG,
2128 VLV_GFX_CLK_STATUS_BIT,
2129 VLV_GFX_CLK_STATUS_BIT,
2130 20);
650ad970
ID		 2131 if (err)
2132 DRM_ERROR("timeout waiting for GFX clock force-on (%08x)\n",
2133 I915_READ(VLV_GTLC_SURVIVABILITY_REG));
2134
2135 return err;
650ad970
ID		 2136}
2137
ddeea5b0
ID		 2138static int vlv_allow_gt_wake(struct drm_i915_private *dev_priv, bool allow)
2139{
2140 u32 val;
2141 int err = 0;
2142
2143 val = I915_READ(VLV_GTLC_WAKE_CTRL);
2144 val &= ~VLV_GTLC_ALLOWWAKEREQ;
2145 if (allow)
2146 val |= VLV_GTLC_ALLOWWAKEREQ;
2147 I915_WRITE(VLV_GTLC_WAKE_CTRL, val);
2148 POSTING_READ(VLV_GTLC_WAKE_CTRL);
2149
b2736695
CW		 2150 err = intel_wait_for_register(dev_priv,
2151 VLV_GTLC_PW_STATUS,
2152 VLV_GTLC_ALLOWWAKEACK,
2153 allow,
2154 1);
ddeea5b0
ID		 2155 if (err)
2156 DRM_ERROR("timeout disabling GT waking\n");
b2736695 2157
ddeea5b0 2158 return err;
ddeea5b0
ID		 2159}
2160
2161static int vlv_wait_for_gt_wells(struct drm_i915_private *dev_priv,
2162 bool wait_for_on)
2163{
2164 u32 mask;
2165 u32 val;
2166 int err;
2167
2168 mask = VLV_GTLC_PW_MEDIA_STATUS_MASK | VLV_GTLC_PW_RENDER_STATUS_MASK;
2169 val = wait_for_on ? mask : 0;
41ce405e 2170 if ((I915_READ(VLV_GTLC_PW_STATUS) & mask) == val)
ddeea5b0
ID		 2171 return 0;
2172
2173 DRM_DEBUG_KMS("waiting for GT wells to go %s (%08x)\n",
87ad3212
JN		 2174 onoff(wait_for_on),
2175 I915_READ(VLV_GTLC_PW_STATUS));
ddeea5b0
ID		 2176
2177 /*
2178 * RC6 transitioning can be delayed up to 2 msec (see
2179 * valleyview_enable_rps), use 3 msec for safety.
2180 */
41ce405e
CW		 2181 err = intel_wait_for_register(dev_priv,
2182 VLV_GTLC_PW_STATUS, mask, val,
2183 3);
ddeea5b0
ID		 2184 if (err)
2185 DRM_ERROR("timeout waiting for GT wells to go %s\n",
87ad3212 2186 onoff(wait_for_on));
ddeea5b0
ID		 2187
2188 return err;
ddeea5b0
ID		 2189}
2190
2191static void vlv_check_no_gt_access(struct drm_i915_private *dev_priv)
2192{
2193 if (!(I915_READ(VLV_GTLC_PW_STATUS) & VLV_GTLC_ALLOWWAKEERR))
2194 return;
2195
6fa283b0 2196 DRM_DEBUG_DRIVER("GT register access while GT waking disabled\n");
ddeea5b0
ID		 2197 I915_WRITE(VLV_GTLC_PW_STATUS, VLV_GTLC_ALLOWWAKEERR);
2198}
2199
ebc32824 2200static int vlv_suspend_complete(struct drm_i915_private *dev_priv)
ddeea5b0
ID		 2201{
2202 u32 mask;
2203 int err;
2204
2205 /*
2206 * Bspec defines the following GT well on flags as debug only, so
2207 * don't treat them as hard failures.
2208 */
2209 (void)vlv_wait_for_gt_wells(dev_priv, false);
2210
2211 mask = VLV_GTLC_RENDER_CTX_EXISTS | VLV_GTLC_MEDIA_CTX_EXISTS;
2212 WARN_ON((I915_READ(VLV_GTLC_WAKE_CTRL) & mask) != mask);
2213
2214 vlv_check_no_gt_access(dev_priv);
2215
2216 err = vlv_force_gfx_clock(dev_priv, true);
2217 if (err)
2218 goto err1;
2219
2220 err = vlv_allow_gt_wake(dev_priv, false);
2221 if (err)
2222 goto err2;
98711167 2223
2d1fe073 2224 if (!IS_CHERRYVIEW(dev_priv))
98711167 2225 vlv_save_gunit_s0ix_state(dev_priv);
ddeea5b0
ID		 2226
2227 err = vlv_force_gfx_clock(dev_priv, false);
2228 if (err)
2229 goto err2;
2230
2231 return 0;
2232
2233err2:
2234 /* For safety always re-enable waking and disable gfx clock forcing */
2235 vlv_allow_gt_wake(dev_priv, true);
2236err1:
2237 vlv_force_gfx_clock(dev_priv, false);
2238
2239 return err;
2240}
2241
016970be
SK		 2242static int vlv_resume_prepare(struct drm_i915_private *dev_priv,
2243 bool rpm_resume)
ddeea5b0 2244{
91c8a326 2245 struct drm_device *dev = &dev_priv->drm;
ddeea5b0
ID		 2246 int err;
2247 int ret;
2248
2249 /*
2250 * If any of the steps fail just try to continue, that's the best we
2251 * can do at this point. Return the first error code (which will also
2252 * leave RPM permanently disabled).
2253 */
2254 ret = vlv_force_gfx_clock(dev_priv, true);
2255
2d1fe073 2256 if (!IS_CHERRYVIEW(dev_priv))
98711167 2257 vlv_restore_gunit_s0ix_state(dev_priv);
ddeea5b0
ID		 2258
2259 err = vlv_allow_gt_wake(dev_priv, true);
2260 if (!ret)
2261 ret = err;
2262
2263 err = vlv_force_gfx_clock(dev_priv, false);
2264 if (!ret)
2265 ret = err;
2266
2267 vlv_check_no_gt_access(dev_priv);
2268
016970be
SK		 2269 if (rpm_resume) {
2270 intel_init_clock_gating(dev);
2271 i915_gem_restore_fences(dev);
2272 }
ddeea5b0
ID		 2273
2274 return ret;
2275}
2276
97bea207 2277static int intel_runtime_suspend(struct device *device)
8a187455
PZ		 2278{
2279 struct pci_dev *pdev = to_pci_dev(device);
2280 struct drm_device *dev = pci_get_drvdata(pdev);
fac5e23e 2281 struct drm_i915_private *dev_priv = to_i915(dev);
0ab9cfeb 2282 int ret;
8a187455 2283
dc97997a 2284 if (WARN_ON_ONCE(!(dev_priv->rps.enabled && intel_enable_rc6())))
c6df39b5
ID		 2285 return -ENODEV;
2286
604effb7
ID		 2287 if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev)))
2288 return -ENODEV;
2289
8a187455
PZ		 2290 DRM_DEBUG_KMS("Suspending device\n");
2291
d6102977
ID		 2292 /*
2293 * We could deadlock here in case another thread holding struct_mutex
2294 * calls RPM suspend concurrently, since the RPM suspend will wait
2295 * first for this RPM suspend to finish. In this case the concurrent
2296 * RPM resume will be followed by its RPM suspend counterpart. Still
2297 * for consistency return -EAGAIN, which will reschedule this suspend.
2298 */
2299 if (!mutex_trylock(&dev->struct_mutex)) {
2300 DRM_DEBUG_KMS("device lock contention, deffering suspend\n");
2301 /*
2302 * Bump the expiration timestamp, otherwise the suspend won't
2303 * be rescheduled.
2304 */
2305 pm_runtime_mark_last_busy(device);
2306
2307 return -EAGAIN;
2308 }
1f814dac
ID		 2309
2310 disable_rpm_wakeref_asserts(dev_priv);
2311
d6102977
ID		 2312 /*
2313 * We are safe here against re-faults, since the fault handler takes
2314 * an RPM reference.
2315 */
2316 i915_gem_release_all_mmaps(dev_priv);
2317 mutex_unlock(&dev->struct_mutex);
2318
a1c41994
AD		 2319 intel_guc_suspend(dev);
2320
2eb5252e 2321 intel_runtime_pm_disable_interrupts(dev_priv);
b5478bcd 2322
507e126e
ID		 2323 ret = 0;
2324 if (IS_BROXTON(dev_priv)) {
2325 bxt_display_core_uninit(dev_priv);
2326 bxt_enable_dc9(dev_priv);
2327 } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
2328 hsw_enable_pc8(dev_priv);
2329 } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
2330 ret = vlv_suspend_complete(dev_priv);
2331 }
2332
0ab9cfeb
ID		 2333 if (ret) {
2334 DRM_ERROR("Runtime suspend failed, disabling it (%d)\n", ret);
b963291c 2335 intel_runtime_pm_enable_interrupts(dev_priv);
0ab9cfeb 2336
1f814dac
ID		 2337 enable_rpm_wakeref_asserts(dev_priv);
2338
0ab9cfeb
ID		 2339 return ret;
2340 }
a8a8bd54 2341
dc97997a 2342 intel_uncore_forcewake_reset(dev_priv, false);
1f814dac
ID		 2343
2344 enable_rpm_wakeref_asserts(dev_priv);
2345 WARN_ON_ONCE(atomic_read(&dev_priv->pm.wakeref_count));
55ec45c2 2346
bc3b9346 2347 if (intel_uncore_arm_unclaimed_mmio_detection(dev_priv))
55ec45c2
MK		 2348 DRM_ERROR("Unclaimed access detected prior to suspending\n");
2349
8a187455 2350 dev_priv->pm.suspended = true;
1fb2362b
KCA		 2351
2352 /*
c8a0bd42
PZ		 2353 * FIXME: We really should find a document that references the arguments
2354 * used below!
1fb2362b 2355 */
6f9f4b7a 2356 if (IS_BROADWELL(dev_priv)) {
d37ae19a
PZ		 2357 /*
2358 * On Broadwell, if we use PCI_D1 the PCH DDI ports will stop
2359 * being detected, and the call we do at intel_runtime_resume()
2360 * won't be able to restore them. Since PCI_D3hot matches the
2361 * actual specification and appears to be working, use it.
2362 */
6f9f4b7a 2363 intel_opregion_notify_adapter(dev_priv, PCI_D3hot);
d37ae19a 2364 } else {
c8a0bd42
PZ		 2365 /*
2366 * current versions of firmware which depend on this opregion
2367 * notification have repurposed the D1 definition to mean
2368 * "runtime suspended" vs. what you would normally expect (D3)
2369 * to distinguish it from notifications that might be sent via
2370 * the suspend path.
2371 */
6f9f4b7a 2372 intel_opregion_notify_adapter(dev_priv, PCI_D1);
c8a0bd42 2373 }
8a187455 2374
59bad947 2375 assert_forcewakes_inactive(dev_priv);
dc9fb09c 2376
19625e85
L		 2377 if (!IS_VALLEYVIEW(dev_priv) || !IS_CHERRYVIEW(dev_priv))
2378 intel_hpd_poll_init(dev_priv);
2379
a8a8bd54 2380 DRM_DEBUG_KMS("Device suspended\n");
8a187455
PZ		 2381 return 0;
2382}
2383
97bea207 2384static int intel_runtime_resume(struct device *device)
8a187455
PZ		 2385{
2386 struct pci_dev *pdev = to_pci_dev(device);
2387 struct drm_device *dev = pci_get_drvdata(pdev);
fac5e23e 2388 struct drm_i915_private *dev_priv = to_i915(dev);
1a5df187 2389 int ret = 0;
8a187455 2390
604effb7
ID		 2391 if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev)))
2392 return -ENODEV;
8a187455
PZ		 2393
2394 DRM_DEBUG_KMS("Resuming device\n");
2395
1f814dac
ID		 2396 WARN_ON_ONCE(atomic_read(&dev_priv->pm.wakeref_count));
2397 disable_rpm_wakeref_asserts(dev_priv);
2398
6f9f4b7a 2399 intel_opregion_notify_adapter(dev_priv, PCI_D0);
8a187455 2400 dev_priv->pm.suspended = false;
55ec45c2
MK		 2401 if (intel_uncore_unclaimed_mmio(dev_priv))
2402 DRM_DEBUG_DRIVER("Unclaimed access during suspend, bios?\n");
8a187455 2403
a1c41994
AD		 2404 intel_guc_resume(dev);
2405
1a5df187
PZ		 2406 if (IS_GEN6(dev_priv))
2407 intel_init_pch_refclk(dev);
31335cec 2408
507e126e
ID		 2409 if (IS_BROXTON(dev)) {
2410 bxt_disable_dc9(dev_priv);
2411 bxt_display_core_init(dev_priv, true);
f62c79b3
ID		 2412 if (dev_priv->csr.dmc_payload &&
2413 (dev_priv->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC5))
2414 gen9_enable_dc5(dev_priv);
507e126e 2415 } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
1a5df187 2416 hsw_disable_pc8(dev_priv);
507e126e 2417 } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
1a5df187 2418 ret = vlv_resume_prepare(dev_priv, true);
507e126e 2419 }
1a5df187 2420
0ab9cfeb
ID		 2421 /*
2422 * No point of rolling back things in case of an error, as the best
2423 * we can do is to hope that things will still work (and disable RPM).
2424 */
92b806d3 2425 i915_gem_init_swizzling(dev);
92b806d3 2426
b963291c 2427 intel_runtime_pm_enable_interrupts(dev_priv);
08d8a232
VS		 2428
2429 /*
2430 * On VLV/CHV display interrupts are part of the display
2431 * power well, so hpd is reinitialized from there. For
2432 * everyone else do it here.
2433 */
666a4537 2434 if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
08d8a232
VS		 2435 intel_hpd_init(dev_priv);
2436
1f814dac
ID		 2437 enable_rpm_wakeref_asserts(dev_priv);
2438
0ab9cfeb
ID		 2439 if (ret)
2440 DRM_ERROR("Runtime resume failed, disabling it (%d)\n", ret);
2441 else
2442 DRM_DEBUG_KMS("Device resumed\n");
2443
2444 return ret;
8a187455
PZ		 2445}
2446
42f5551d 2447const struct dev_pm_ops i915_pm_ops = {
5545dbbf
ID		 2448 /*
2449 * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND,
2450 * PMSG_RESUME]
2451 */
0206e353 2452 .suspend = i915_pm_suspend,
76c4b250
ID		 2453 .suspend_late = i915_pm_suspend_late,
2454 .resume_early = i915_pm_resume_early,
0206e353 2455 .resume = i915_pm_resume,
5545dbbf
ID		 2456
2457 /*
2458 * S4 event handlers
2459 * @freeze, @freeze_late : called (1) before creating the
2460 * hibernation image [PMSG_FREEZE] and
2461 * (2) after rebooting, before restoring
2462 * the image [PMSG_QUIESCE]
2463 * @thaw, @thaw_early : called (1) after creating the hibernation
2464 * image, before writing it [PMSG_THAW]
2465 * and (2) after failing to create or
2466 * restore the image [PMSG_RECOVER]
2467 * @poweroff, @poweroff_late: called after writing the hibernation
2468 * image, before rebooting [PMSG_HIBERNATE]
2469 * @restore, @restore_early : called after rebooting and restoring the
2470 * hibernation image [PMSG_RESTORE]
2471 */
1f19ac2a
CW		 2472 .freeze = i915_pm_freeze,
2473 .freeze_late = i915_pm_freeze_late,
2474 .thaw_early = i915_pm_thaw_early,
2475 .thaw = i915_pm_thaw,
36d61e67 2476 .poweroff = i915_pm_suspend,
ab3be73f 2477 .poweroff_late = i915_pm_poweroff_late,
1f19ac2a
CW		 2478 .restore_early = i915_pm_restore_early,
2479 .restore = i915_pm_restore,
5545dbbf
ID		 2480
2481 /* S0ix (via runtime suspend) event handlers */
97bea207
PZ		 2482 .runtime_suspend = intel_runtime_suspend,
2483 .runtime_resume = intel_runtime_resume,
cbda12d7
ZW		 2484};
2485
78b68556 2486static const struct vm_operations_struct i915_gem_vm_ops = {
de151cf6 2487 .fault = i915_gem_fault,
ab00b3e5
JB		 2488 .open = drm_gem_vm_open,
2489 .close = drm_gem_vm_close,
de151cf6
JB		 2490};
2491
e08e96de
AV		 2492static const struct file_operations i915_driver_fops = {
2493 .owner = THIS_MODULE,
2494 .open = drm_open,
2495 .release = drm_release,
2496 .unlocked_ioctl = drm_ioctl,
2497 .mmap = drm_gem_mmap,
2498 .poll = drm_poll,
e08e96de
AV		 2499 .read = drm_read,
2500#ifdef CONFIG_COMPAT
2501 .compat_ioctl = i915_compat_ioctl,
2502#endif
2503 .llseek = noop_llseek,
2504};
2505
0673ad47
CW		 2506static int
2507i915_gem_reject_pin_ioctl(struct drm_device *dev, void *data,
2508 struct drm_file *file)
2509{
2510 return -ENODEV;
2511}
2512
2513static const struct drm_ioctl_desc i915_ioctls[] = {
2514 DRM_IOCTL_DEF_DRV(I915_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2515 DRM_IOCTL_DEF_DRV(I915_FLUSH, drm_noop, DRM_AUTH),
2516 DRM_IOCTL_DEF_DRV(I915_FLIP, drm_noop, DRM_AUTH),
2517 DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, drm_noop, DRM_AUTH),
2518 DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH),
2519 DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH),
2520 DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH|DRM_RENDER_ALLOW),
2521 DRM_IOCTL_DEF_DRV(I915_SETPARAM, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2522 DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH),
2523 DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH),
2524 DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2525 DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, drm_noop, DRM_AUTH),
2526 DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2527 DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2528 DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, drm_noop, DRM_AUTH),
2529 DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, drm_noop, DRM_AUTH),
2530 DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2531 DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2532 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH),
2533 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_RENDER_ALLOW),
2534 DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
2535 DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
2536 DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
2537 DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_RENDER_ALLOW),
2538 DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_RENDER_ALLOW),
2539 DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
2540 DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2541 DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2542 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_RENDER_ALLOW),
2543 DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_RENDER_ALLOW),
2544 DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_RENDER_ALLOW),
2545 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_RENDER_ALLOW),
2546 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_RENDER_ALLOW),
2547 DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_RENDER_ALLOW),
2548 DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_RENDER_ALLOW),
2549 DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_RENDER_ALLOW),
2550 DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_RENDER_ALLOW),
2551 DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_RENDER_ALLOW),
2552 DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, 0),
2553 DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_RENDER_ALLOW),
2554 DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
2555 DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
2556 DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW),
2557 DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW),
2558 DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
2559 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW),
2560 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW),
2561 DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW),
2562 DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_gem_context_reset_stats_ioctl, DRM_RENDER_ALLOW),
2563 DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR, i915_gem_userptr_ioctl, DRM_RENDER_ALLOW),
2564 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW),
2565 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW),
2566};
2567
1da177e4 2568static struct drm_driver driver = {
0c54781b
MW		 2569 /* Don't use MTRRs here; the Xserver or userspace app should
2570 * deal with them for Intel hardware.
792d2b9a 2571 */
673a394b 2572 .driver_features =
10ba5012 2573 DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME |
1751fcf9 2574 DRIVER_RENDER | DRIVER_MODESET,
673a394b 2575 .open = i915_driver_open,
22eae947
DA		 2576 .lastclose = i915_driver_lastclose,
2577 .preclose = i915_driver_preclose,
673a394b 2578 .postclose = i915_driver_postclose,
915b4d11 2579 .set_busid = drm_pci_set_busid,
d8e29209 2580
673a394b 2581 .gem_free_object = i915_gem_free_object,
de151cf6 2582 .gem_vm_ops = &i915_gem_vm_ops,
1286ff73
DV		 2583
2584 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
2585 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
2586 .gem_prime_export = i915_gem_prime_export,
2587 .gem_prime_import = i915_gem_prime_import,
2588
ff72145b 2589 .dumb_create = i915_gem_dumb_create,
da6b51d0 2590 .dumb_map_offset = i915_gem_mmap_gtt,
43387b37 2591 .dumb_destroy = drm_gem_dumb_destroy,
1da177e4 2592 .ioctls = i915_ioctls,
0673ad47 2593 .num_ioctls = ARRAY_SIZE(i915_ioctls),
e08e96de 2594 .fops = &i915_driver_fops,
22eae947
DA		 2595 .name = DRIVER_NAME,
2596 .desc = DRIVER_DESC,
2597 .date = DRIVER_DATE,
2598 .major = DRIVER_MAJOR,
2599 .minor = DRIVER_MINOR,
2600 .patchlevel = DRIVER_PATCHLEVEL,
1da177e4 2601};
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