summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/i915/gvt/gvt.h
blob: 05d15a095310d41b75d6ab64aa04162799f393a1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
/*
 * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Authors:
 *    Kevin Tian <kevin.tian@intel.com>
 *    Eddie Dong <eddie.dong@intel.com>
 *
 * Contributors:
 *    Niu Bing <bing.niu@intel.com>
 *    Zhi Wang <zhi.a.wang@intel.com>
 *
 */

#ifndef _GVT_H_
#define _GVT_H_

#include "debug.h"
#include "hypercall.h"
#include "mmio.h"
#include "reg.h"
#include "interrupt.h"
#include "gtt.h"
#include "display.h"
#include "edid.h"
#include "execlist.h"
#include "scheduler.h"
#include "sched_policy.h"
#include "mmio_context.h"
#include "cmd_parser.h"
#include "fb_decoder.h"
#include "dmabuf.h"
#include "page_track.h"

#define GVT_MAX_VGPU 8

enum {
	INTEL_GVT_HYPERVISOR_XEN = 0,
	INTEL_GVT_HYPERVISOR_KVM,
};

struct intel_gvt_host {
	bool initialized;
	int hypervisor_type;
	struct intel_gvt_mpt *mpt;
};

extern struct intel_gvt_host intel_gvt_host;

/* Describe per-platform limitations. */
struct intel_gvt_device_info {
	u32 max_support_vgpus;
	u32 cfg_space_size;
	u32 mmio_size;
	u32 mmio_bar;
	unsigned long msi_cap_offset;
	u32 gtt_start_offset;
	u32 gtt_entry_size;
	u32 gtt_entry_size_shift;
	int gmadr_bytes_in_cmd;
	u32 max_surface_size;
};

/* GM resources owned by a vGPU */
struct intel_vgpu_gm {
	u64 aperture_sz;
	u64 hidden_sz;
	struct drm_mm_node low_gm_node;
	struct drm_mm_node high_gm_node;
};

#define INTEL_GVT_MAX_NUM_FENCES 32

/* Fences owned by a vGPU */
struct intel_vgpu_fence {
	struct drm_i915_fence_reg *regs[INTEL_GVT_MAX_NUM_FENCES];
	u32 base;
	u32 size;
};

struct intel_vgpu_mmio {
	void *vreg;
	void *sreg;
};

#define INTEL_GVT_MAX_BAR_NUM 4

struct intel_vgpu_pci_bar {
	u64 size;
	bool tracked;
};

struct intel_vgpu_cfg_space {
	unsigned char virtual_cfg_space[PCI_CFG_SPACE_EXP_SIZE];
	struct intel_vgpu_pci_bar bar[INTEL_GVT_MAX_BAR_NUM];
};

#define vgpu_cfg_space(vgpu) ((vgpu)->cfg_space.virtual_cfg_space)

#define INTEL_GVT_MAX_PIPE 4

struct intel_vgpu_irq {
	bool irq_warn_once[INTEL_GVT_EVENT_MAX];
	DECLARE_BITMAP(flip_done_event[INTEL_GVT_MAX_PIPE],
		       INTEL_GVT_EVENT_MAX);
};

struct intel_vgpu_opregion {
	bool mapped;
	void *va;
	u32 gfn[INTEL_GVT_OPREGION_PAGES];
};

#define vgpu_opregion(vgpu) (&(vgpu->opregion))

struct intel_vgpu_display {
	struct intel_vgpu_i2c_edid i2c_edid;
	struct intel_vgpu_port ports[I915_MAX_PORTS];
	struct intel_vgpu_sbi sbi;
};

struct vgpu_sched_ctl {
	int weight;
};

enum {
	INTEL_VGPU_EXECLIST_SUBMISSION = 1,
	INTEL_VGPU_GUC_SUBMISSION,
};

struct intel_vgpu_submission_ops {
	const char *name;
	int (*init)(struct intel_vgpu *vgpu, unsigned long engine_mask);
	void (*clean)(struct intel_vgpu *vgpu, unsigned long engine_mask);
	void (*reset)(struct intel_vgpu *vgpu, unsigned long engine_mask);
};

struct intel_vgpu_submission {
	struct intel_vgpu_execlist execlist[I915_NUM_ENGINES];
	struct list_head workload_q_head[I915_NUM_ENGINES];
	struct kmem_cache *workloads;
	atomic_t running_workload_num;
	struct i915_gem_context *shadow_ctx;
	DECLARE_BITMAP(shadow_ctx_desc_updated, I915_NUM_ENGINES);
	DECLARE_BITMAP(tlb_handle_pending, I915_NUM_ENGINES);
	void *ring_scan_buffer[I915_NUM_ENGINES];
	int ring_scan_buffer_size[I915_NUM_ENGINES];
	const struct intel_vgpu_submission_ops *ops;
	int virtual_submission_interface;
	bool active;
};

struct intel_vgpu {
	struct intel_gvt *gvt;
	int id;
	unsigned long handle; /* vGPU handle used by hypervisor MPT modules */
	bool active;
	bool pv_notified;
	bool failsafe;
	unsigned int resetting_eng;
	void *sched_data;
	struct vgpu_sched_ctl sched_ctl;

	struct intel_vgpu_fence fence;
	struct intel_vgpu_gm gm;
	struct intel_vgpu_cfg_space cfg_space;
	struct intel_vgpu_mmio mmio;
	struct intel_vgpu_irq irq;
	struct intel_vgpu_gtt gtt;
	struct intel_vgpu_opregion opregion;
	struct intel_vgpu_display display;
	struct intel_vgpu_submission submission;
	struct radix_tree_root page_track_tree;
	u32 hws_pga[I915_NUM_ENGINES];

	struct dentry *debugfs;

#if IS_ENABLED(CONFIG_DRM_I915_GVT_KVMGT)
	struct {
		struct mdev_device *mdev;
		struct vfio_region *region;
		int num_regions;
		struct eventfd_ctx *intx_trigger;
		struct eventfd_ctx *msi_trigger;

		/*
		 * Two caches are used to avoid mapping duplicated pages (eg.
		 * scratch pages). This help to reduce dma setup overhead.
		 */
		struct rb_root gfn_cache;
		struct rb_root dma_addr_cache;
		unsigned long nr_cache_entries;
		struct mutex cache_lock;

		struct notifier_block iommu_notifier;
		struct notifier_block group_notifier;
		struct kvm *kvm;
		struct work_struct release_work;
		atomic_t released;
		struct vfio_device *vfio_device;
	} vdev;
#endif

	struct list_head dmabuf_obj_list_head;
	struct mutex dmabuf_lock;
	struct idr object_idr;

	struct completion vblank_done;

	u32 scan_nonprivbb;
};

/* validating GM healthy status*/
#define vgpu_is_vm_unhealthy(ret_val) \
	(((ret_val) == -EBADRQC) || ((ret_val) == -EFAULT))

struct intel_gvt_gm {
	unsigned long vgpu_allocated_low_gm_size;
	unsigned long vgpu_allocated_high_gm_size;
};

struct intel_gvt_fence {
	unsigned long vgpu_allocated_fence_num;
};

/* Special MMIO blocks. */
struct gvt_mmio_block {
	unsigned int device;
	i915_reg_t   offset;
	unsigned int size;
	gvt_mmio_func read;
	gvt_mmio_func write;
};

#define INTEL_GVT_MMIO_HASH_BITS 11

struct intel_gvt_mmio {
	u8 *mmio_attribute;
/* Register contains RO bits */
#define F_RO		(1 << 0)
/* Register contains graphics address */
#define F_GMADR		(1 << 1)
/* Mode mask registers with high 16 bits as the mask bits */
#define F_MODE_MASK	(1 << 2)
/* This reg can be accessed by GPU commands */
#define F_CMD_ACCESS	(1 << 3)
/* This reg has been accessed by a VM */
#define F_ACCESSED	(1 << 4)
/* This reg has been accessed through GPU commands */
#define F_CMD_ACCESSED	(1 << 5)
/* This reg could be accessed by unaligned address */
#define F_UNALIGN	(1 << 6)

	struct gvt_mmio_block *mmio_block;
	unsigned int num_mmio_block;

	DECLARE_HASHTABLE(mmio_info_table, INTEL_GVT_MMIO_HASH_BITS);
	unsigned long num_tracked_mmio;
};

struct intel_gvt_firmware {
	void *cfg_space;
	void *mmio;
	bool firmware_loaded;
};

#define NR_MAX_INTEL_VGPU_TYPES 20
struct intel_vgpu_type {
	char name[16];
	unsigned int avail_instance;
	unsigned int low_gm_size;
	unsigned int high_gm_size;
	unsigned int fence;
	unsigned int weight;
	enum intel_vgpu_edid resolution;
};

struct intel_gvt {
	struct mutex lock;
	struct drm_i915_private *dev_priv;
	struct idr vgpu_idr;	/* vGPU IDR pool */

	struct intel_gvt_device_info device_info;
	struct intel_gvt_gm gm;
	struct intel_gvt_fence fence;
	struct intel_gvt_mmio mmio;
	struct intel_gvt_firmware firmware;
	struct intel_gvt_irq irq;
	struct intel_gvt_gtt gtt;
	struct intel_gvt_workload_scheduler scheduler;
	struct notifier_block shadow_ctx_notifier_block[I915_NUM_ENGINES];
	DECLARE_HASHTABLE(cmd_table, GVT_CMD_HASH_BITS);
	struct intel_vgpu_type *types;
	unsigned int num_types;
	struct intel_vgpu *idle_vgpu;

	struct task_struct *service_thread;
	wait_queue_head_t service_thread_wq;
	unsigned long service_request;

	struct {
		struct engine_mmio *mmio;
		int ctx_mmio_count[I915_NUM_ENGINES];
	} engine_mmio_list;

	struct dentry *debugfs_root;
};

static inline struct intel_gvt *to_gvt(struct drm_i915_private *i915)
{
	return i915->gvt;
}

enum {
	INTEL_GVT_REQUEST_EMULATE_VBLANK = 0,

	/* Scheduling trigger by timer */
	INTEL_GVT_REQUEST_SCHED = 1,

	/* Scheduling trigger by event */
	INTEL_GVT_REQUEST_EVENT_SCHED = 2,
};

static inline void intel_gvt_request_service(struct intel_gvt *gvt,
		int service)
{
	set_bit(service, (void *)&gvt->service_request);
	wake_up(&gvt->service_thread_wq);
}

void intel_gvt_free_firmware(struct intel_gvt *gvt);
int intel_gvt_load_firmware(struct intel_gvt *gvt);

/* Aperture/GM space definitions for GVT device */
#define MB_TO_BYTES(mb) ((mb) << 20ULL)
#define BYTES_TO_MB(b) ((b) >> 20ULL)

#define HOST_LOW_GM_SIZE MB_TO_BYTES(128)
#define HOST_HIGH_GM_SIZE MB_TO_BYTES(384)
#define HOST_FENCE 4

/* Aperture/GM space definitions for GVT device */
#define gvt_aperture_sz(gvt)	  (gvt->dev_priv->ggtt.mappable_end)
#define gvt_aperture_pa_base(gvt) (gvt->dev_priv->ggtt.gmadr.start)

#define gvt_ggtt_gm_sz(gvt)	  (gvt->dev_priv->ggtt.base.total)
#define gvt_ggtt_sz(gvt) \
	((gvt->dev_priv->ggtt.base.total >> PAGE_SHIFT) << 3)
#define gvt_hidden_sz(gvt)	  (gvt_ggtt_gm_sz(gvt) - gvt_aperture_sz(gvt))

#define gvt_aperture_gmadr_base(gvt) (0)
#define gvt_aperture_gmadr_end(gvt) (gvt_aperture_gmadr_base(gvt) \
				     + gvt_aperture_sz(gvt) - 1)

#define gvt_hidden_gmadr_base(gvt) (gvt_aperture_gmadr_base(gvt) \
				    + gvt_aperture_sz(gvt))
#define gvt_hidden_gmadr_end(gvt) (gvt_hidden_gmadr_base(gvt) \
				   + gvt_hidden_sz(gvt) - 1)

#define gvt_fence_sz(gvt) (gvt->dev_priv->num_fence_regs)

/* Aperture/GM space definitions for vGPU */
#define vgpu_aperture_offset(vgpu)	((vgpu)->gm.low_gm_node.start)
#define vgpu_hidden_offset(vgpu)	((vgpu)->gm.high_gm_node.start)
#define vgpu_aperture_sz(vgpu)		((vgpu)->gm.aperture_sz)
#define vgpu_hidden_sz(vgpu)		((vgpu)->gm.hidden_sz)

#define vgpu_aperture_pa_base(vgpu) \
	(gvt_aperture_pa_base(vgpu->gvt) + vgpu_aperture_offset(vgpu))

#define vgpu_ggtt_gm_sz(vgpu) ((vgpu)->gm.aperture_sz + (vgpu)->gm.hidden_sz)

#define vgpu_aperture_pa_end(vgpu) \
	(vgpu_aperture_pa_base(vgpu) + vgpu_aperture_sz(vgpu) - 1)

#define vgpu_aperture_gmadr_base(vgpu) (vgpu_aperture_offset(vgpu))
#define vgpu_aperture_gmadr_end(vgpu) \
	(vgpu_aperture_gmadr_base(vgpu) + vgpu_aperture_sz(vgpu) - 1)

#define vgpu_hidden_gmadr_base(vgpu) (vgpu_hidden_offset(vgpu))
#define vgpu_hidden_gmadr_end(vgpu) \
	(vgpu_hidden_gmadr_base(vgpu) + vgpu_hidden_sz(vgpu) - 1)

#define vgpu_fence_base(vgpu) (vgpu->fence.base)
#define vgpu_fence_sz(vgpu) (vgpu->fence.size)

struct intel_vgpu_creation_params {
	__u64 handle;
	__u64 low_gm_sz;  /* in MB */
	__u64 high_gm_sz; /* in MB */
	__u64 fence_sz;
	__u64 resolution;
	__s32 primary;
	__u64 vgpu_id;

	__u32 weight;
};

int intel_vgpu_alloc_resource(struct intel_vgpu *vgpu,
			      struct intel_vgpu_creation_params *param);
void intel_vgpu_reset_resource(struct intel_vgpu *vgpu);
void intel_vgpu_free_resource(struct intel_vgpu *vgpu);
void intel_vgpu_write_fence(struct intel_vgpu *vgpu,
	u32 fence, u64 value);

/* Macros for easily accessing vGPU virtual/shadow register.
   Explicitly seperate use for typed MMIO reg or real offset.*/
#define vgpu_vreg_t(vgpu, reg) \
	(*(u32 *)(vgpu->mmio.vreg + i915_mmio_reg_offset(reg)))
#define vgpu_vreg(vgpu, offset) \
	(*(u32 *)(vgpu->mmio.vreg + (offset)))
#define vgpu_vreg64_t(vgpu, reg) \
	(*(u64 *)(vgpu->mmio.vreg + i915_mmio_reg_offset(reg)))
#define vgpu_vreg64(vgpu, offset) \
	(*(u64 *)(vgpu->mmio.vreg + (offset)))
#define vgpu_sreg_t(vgpu, reg) \
	(*(u32 *)(vgpu->mmio.sreg + i915_mmio_reg_offset(reg)))
#define vgpu_sreg(vgpu, offset) \
	(*(u32 *)(vgpu->mmio.sreg + (offset)))

#define for_each_active_vgpu(gvt, vgpu, id) \
	idr_for_each_entry((&(gvt)->vgpu_idr), (vgpu), (id)) \
		for_each_if(vgpu->active)

static inline void intel_vgpu_write_pci_bar(struct intel_vgpu *vgpu,
					    u32 offset, u32 val, bool low)
{
	u32 *pval;

	/* BAR offset should be 32 bits algiend */
	offset = rounddown(offset, 4);
	pval = (u32 *)(vgpu_cfg_space(vgpu) + offset);

	if (low) {
		/*
		 * only update bit 31 - bit 4,
		 * leave the bit 3 - bit 0 unchanged.
		 */
		*pval = (val & GENMASK(31, 4)) | (*pval & GENMASK(3, 0));
	} else {
		*pval = val;
	}
}

int intel_gvt_init_vgpu_types(struct intel_gvt *gvt);
void intel_gvt_clean_vgpu_types(struct intel_gvt *gvt);

struct intel_vgpu *intel_gvt_create_idle_vgpu(struct intel_gvt *gvt);
void intel_gvt_destroy_idle_vgpu(struct intel_vgpu *vgpu);
struct intel_vgpu *intel_gvt_create_vgpu(struct intel_gvt *gvt,
					 struct intel_vgpu_type *type);
void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu);
void intel_gvt_reset_vgpu_locked(struct intel_vgpu *vgpu, bool dmlr,
				 unsigned int engine_mask);
void intel_gvt_reset_vgpu(struct intel_vgpu *vgpu);
void intel_gvt_activate_vgpu(struct intel_vgpu *vgpu);
void intel_gvt_deactivate_vgpu(struct intel_vgpu *vgpu);

/* validating GM functions */
#define vgpu_gmadr_is_aperture(vgpu, gmadr) \
	((gmadr >= vgpu_aperture_gmadr_base(vgpu)) && \
	 (gmadr <= vgpu_aperture_gmadr_end(vgpu)))

#define vgpu_gmadr_is_hidden(vgpu, gmadr) \
	((gmadr >= vgpu_hidden_gmadr_base(vgpu)) && \
	 (gmadr <= vgpu_hidden_gmadr_end(vgpu)))

#define vgpu_gmadr_is_valid(vgpu, gmadr) \
	 ((vgpu_gmadr_is_aperture(vgpu, gmadr) || \
	  (vgpu_gmadr_is_hidden(vgpu, gmadr))))

#define gvt_gmadr_is_aperture(gvt, gmadr) \
	 ((gmadr >= gvt_aperture_gmadr_base(gvt)) && \
	  (gmadr <= gvt_aperture_gmadr_end(gvt)))

#define gvt_gmadr_is_hidden(gvt, gmadr) \
	  ((gmadr >= gvt_hidden_gmadr_base(gvt)) && \
	   (gmadr <= gvt_hidden_gmadr_end(gvt)))

#define gvt_gmadr_is_valid(gvt, gmadr) \
	  (gvt_gmadr_is_aperture(gvt, gmadr) || \
	    gvt_gmadr_is_hidden(gvt, gmadr))

bool intel_gvt_ggtt_validate_range(struct intel_vgpu *vgpu, u64 addr, u32 size);
int intel_gvt_ggtt_gmadr_g2h(struct intel_vgpu *vgpu, u64 g_addr, u64 *h_addr);
int intel_gvt_ggtt_gmadr_h2g(struct intel_vgpu *vgpu, u64 h_addr, u64 *g_addr);
int intel_gvt_ggtt_index_g2h(struct intel_vgpu *vgpu, unsigned long g_index,
			     unsigned long *h_index);
int intel_gvt_ggtt_h2g_index(struct intel_vgpu *vgpu, unsigned long h_index,
			     unsigned long *g_index);

void intel_vgpu_init_cfg_space(struct intel_vgpu *vgpu,
		bool primary);
void intel_vgpu_reset_cfg_space(struct intel_vgpu *vgpu);

int intel_vgpu_emulate_cfg_read(struct intel_vgpu *vgpu, unsigned int offset,
		void *p_data, unsigned int bytes);

int intel_vgpu_emulate_cfg_write(struct intel_vgpu *vgpu, unsigned int offset,
		void *p_data, unsigned int bytes);

static inline u64 intel_vgpu_get_bar_gpa(struct intel_vgpu *vgpu, int bar)
{
	/* We are 64bit bar. */
	return (*(u64 *)(vgpu->cfg_space.virtual_cfg_space + bar)) &
			PCI_BASE_ADDRESS_MEM_MASK;
}

void intel_vgpu_clean_opregion(struct intel_vgpu *vgpu);
int intel_vgpu_init_opregion(struct intel_vgpu *vgpu);
int intel_vgpu_opregion_base_write_handler(struct intel_vgpu *vgpu, u32 gpa);

int intel_vgpu_emulate_opregion_request(struct intel_vgpu *vgpu, u32 swsci);
void populate_pvinfo_page(struct intel_vgpu *vgpu);

int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload);
void enter_failsafe_mode(struct intel_vgpu *vgpu, int reason);

struct intel_gvt_ops {
	int (*emulate_cfg_read)(struct intel_vgpu *, unsigned int, void *,
				unsigned int);
	int (*emulate_cfg_write)(struct intel_vgpu *, unsigned int, void *,
				unsigned int);
	int (*emulate_mmio_read)(struct intel_vgpu *, u64, void *,
				unsigned int);
	int (*emulate_mmio_write)(struct intel_vgpu *, u64, void *,
				unsigned int);
	struct intel_vgpu *(*vgpu_create)(struct intel_gvt *,
				struct intel_vgpu_type *);
	void (*vgpu_destroy)(struct intel_vgpu *);
	void (*vgpu_reset)(struct intel_vgpu *);
	void (*vgpu_activate)(struct intel_vgpu *);
	void (*vgpu_deactivate)(struct intel_vgpu *);
	struct intel_vgpu_type *(*gvt_find_vgpu_type)(struct intel_gvt *gvt,
			const char *name);
	bool (*get_gvt_attrs)(struct attribute ***type_attrs,
			struct attribute_group ***intel_vgpu_type_groups);
	int (*vgpu_query_plane)(struct intel_vgpu *vgpu, void *);
	int (*vgpu_get_dmabuf)(struct intel_vgpu *vgpu, unsigned int);
	int (*write_protect_handler)(struct intel_vgpu *, u64, void *,
				     unsigned int);
};


enum {
	GVT_FAILSAFE_UNSUPPORTED_GUEST,
	GVT_FAILSAFE_INSUFFICIENT_RESOURCE,
	GVT_FAILSAFE_GUEST_ERR,
};

static inline void mmio_hw_access_pre(struct drm_i915_private *dev_priv)
{
	intel_runtime_pm_get(dev_priv);
}

static inline void mmio_hw_access_post(struct drm_i915_private *dev_priv)
{
	intel_runtime_pm_put(dev_priv);
}

/**
 * intel_gvt_mmio_set_accessed - mark a MMIO has been accessed
 * @gvt: a GVT device
 * @offset: register offset
 *
 */
static inline void intel_gvt_mmio_set_accessed(
			struct intel_gvt *gvt, unsigned int offset)
{
	gvt->mmio.mmio_attribute[offset >> 2] |= F_ACCESSED;
}

/**
 * intel_gvt_mmio_is_cmd_accessed - mark a MMIO could be accessed by command
 * @gvt: a GVT device
 * @offset: register offset
 *
 */
static inline bool intel_gvt_mmio_is_cmd_access(
			struct intel_gvt *gvt, unsigned int offset)
{
	return gvt->mmio.mmio_attribute[offset >> 2] & F_CMD_ACCESS;
}

/**
 * intel_gvt_mmio_is_unalign - mark a MMIO could be accessed unaligned
 * @gvt: a GVT device
 * @offset: register offset
 *
 */
static inline bool intel_gvt_mmio_is_unalign(
			struct intel_gvt *gvt, unsigned int offset)
{
	return gvt->mmio.mmio_attribute[offset >> 2] & F_UNALIGN;
}

/**
 * intel_gvt_mmio_set_cmd_accessed - mark a MMIO has been accessed by command
 * @gvt: a GVT device
 * @offset: register offset
 *
 */
static inline void intel_gvt_mmio_set_cmd_accessed(
			struct intel_gvt *gvt, unsigned int offset)
{
	gvt->mmio.mmio_attribute[offset >> 2] |= F_CMD_ACCESSED;
}

/**
 * intel_gvt_mmio_has_mode_mask - if a MMIO has a mode mask
 * @gvt: a GVT device
 * @offset: register offset
 *
 * Returns:
 * True if a MMIO has a mode mask in its higher 16 bits, false if it isn't.
 *
 */
static inline bool intel_gvt_mmio_has_mode_mask(
			struct intel_gvt *gvt, unsigned int offset)
{
	return gvt->mmio.mmio_attribute[offset >> 2] & F_MODE_MASK;
}

int intel_gvt_debugfs_add_vgpu(struct intel_vgpu *vgpu);
void intel_gvt_debugfs_remove_vgpu(struct intel_vgpu *vgpu);
int intel_gvt_debugfs_init(struct intel_gvt *gvt);
void intel_gvt_debugfs_clean(struct intel_gvt *gvt);


#include "trace.h"
#include "mpt.h"

#endif
OpenPOWER on IntegriCloud