linux/drivers/gpu/drm/i915/gvt/gtt.h

/*
 * 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:
 *    Zhi Wang <[email protected]>
 *    Zhenyu Wang <[email protected]>
 *    Xiao Zheng <[email protected]>
 *
 * Contributors:
 *    Min He <[email protected]>
 *    Bing Niu <[email protected]>
 *
 */

#ifndef _GVT_GTT_H_
#define _GVT_GTT_H_

#include <linux/kernel.h>
#include <linux/kref.h>
#include <linux/mutex.h>
#include <linux/radix-tree.h>

#include "gt/intel_gtt.h"

struct intel_gvt;
struct intel_vgpu;
struct intel_vgpu_mm;

#define I915_GTT_PAGE_SHIFT …

#define INTEL_GVT_INVALID_ADDR …

struct intel_gvt_gtt_entry { … };

struct intel_gvt_gtt_pte_ops { … };

struct intel_gvt_gtt_gma_ops { … };

struct intel_gvt_gtt { … };

enum intel_gvt_gtt_type { … };

enum intel_gvt_mm_type { … };

#define GVT_RING_CTX_NR_PDPS …

struct intel_gvt_partial_pte { … };

struct intel_vgpu_mm { … };

struct intel_vgpu_mm *intel_vgpu_create_ppgtt_mm(struct intel_vgpu *vgpu,
		enum intel_gvt_gtt_type root_entry_type, u64 pdps[]);

static inline void intel_vgpu_mm_get(struct intel_vgpu_mm *mm)
{ … }

void _intel_vgpu_mm_release(struct kref *mm_ref);

static inline void intel_vgpu_mm_put(struct intel_vgpu_mm *mm)
{ … }

static inline void intel_vgpu_destroy_mm(struct intel_vgpu_mm *mm)
{ … }

struct intel_vgpu_guest_page;

struct intel_vgpu_scratch_pt { … };

struct intel_vgpu_gtt { … };

int intel_vgpu_init_gtt(struct intel_vgpu *vgpu);
void intel_vgpu_clean_gtt(struct intel_vgpu *vgpu);
void intel_vgpu_reset_ggtt(struct intel_vgpu *vgpu, bool invalidate_old);
void intel_vgpu_invalidate_ppgtt(struct intel_vgpu *vgpu);

int intel_gvt_init_gtt(struct intel_gvt *gvt);
void intel_gvt_clean_gtt(struct intel_gvt *gvt);

struct intel_vgpu_mm *intel_gvt_find_ppgtt_mm(struct intel_vgpu *vgpu,
					      int page_table_level,
					      void *root_entry);

struct intel_vgpu_oos_page { … };

#define GTT_ENTRY_NUM_IN_ONE_PAGE …

/* Represent a vgpu shadow page table. */
struct intel_vgpu_ppgtt_spt { … };

int intel_vgpu_sync_oos_pages(struct intel_vgpu *vgpu);

int intel_vgpu_flush_post_shadow(struct intel_vgpu *vgpu);

int intel_vgpu_pin_mm(struct intel_vgpu_mm *mm);

void intel_vgpu_unpin_mm(struct intel_vgpu_mm *mm);

unsigned long intel_vgpu_gma_to_gpa(struct intel_vgpu_mm *mm,
		unsigned long gma);

struct intel_vgpu_mm *intel_vgpu_find_ppgtt_mm(struct intel_vgpu *vgpu,
		u64 pdps[]);

struct intel_vgpu_mm *intel_vgpu_get_ppgtt_mm(struct intel_vgpu *vgpu,
		enum intel_gvt_gtt_type root_entry_type, u64 pdps[]);

int intel_vgpu_put_ppgtt_mm(struct intel_vgpu *vgpu, u64 pdps[]);

int intel_vgpu_emulate_ggtt_mmio_read(struct intel_vgpu *vgpu,
	unsigned int off, void *p_data, unsigned int bytes);

int intel_vgpu_emulate_ggtt_mmio_write(struct intel_vgpu *vgpu,
	unsigned int off, void *p_data, unsigned int bytes);

void intel_vgpu_destroy_all_ppgtt_mm(struct intel_vgpu *vgpu);
void intel_gvt_restore_ggtt(struct intel_gvt *gvt);

#endif /* _GVT_GTT_H_ */