linux/drivers/gpu/drm/i915/gt/intel_ppgtt.c

// SPDX-License-Identifier: MIT
/*
 * Copyright © 2020 Intel Corporation
 */

#include <linux/slab.h>

#include "gem/i915_gem_lmem.h"

#include "i915_trace.h"
#include "intel_gt.h"
#include "intel_gtt.h"
#include "gen6_ppgtt.h"
#include "gen8_ppgtt.h"

struct i915_page_table *alloc_pt(struct i915_address_space *vm, int sz)
{ … }

struct i915_page_directory *__alloc_pd(int count)
{ … }

struct i915_page_directory *alloc_pd(struct i915_address_space *vm)
{ … }

void free_px(struct i915_address_space *vm, struct i915_page_table *pt, int lvl)
{ … }

static void
write_dma_entry(struct drm_i915_gem_object * const pdma,
		const unsigned short idx,
		const u64 encoded_entry)
{ … }

void
__set_pd_entry(struct i915_page_directory * const pd,
	       const unsigned short idx,
	       struct i915_page_table * const to,
	       u64 (*encode)(const dma_addr_t, const enum i915_cache_level))
{ … }

void
clear_pd_entry(struct i915_page_directory * const pd,
	       const unsigned short idx,
	       const struct drm_i915_gem_object * const scratch)
{ … }

bool
release_pd_entry(struct i915_page_directory * const pd,
		 const unsigned short idx,
		 struct i915_page_table * const pt,
		 const struct drm_i915_gem_object * const scratch)
{ … }

int i915_ppgtt_init_hw(struct intel_gt *gt)
{ … }

static struct i915_ppgtt *
__ppgtt_create(struct intel_gt *gt, unsigned long lmem_pt_obj_flags)
{ … }

struct i915_ppgtt *i915_ppgtt_create(struct intel_gt *gt,
				     unsigned long lmem_pt_obj_flags)
{ … }

void ppgtt_bind_vma(struct i915_address_space *vm,
		    struct i915_vm_pt_stash *stash,
		    struct i915_vma_resource *vma_res,
		    unsigned int pat_index,
		    u32 flags)
{ … }

void ppgtt_unbind_vma(struct i915_address_space *vm,
		      struct i915_vma_resource *vma_res)
{ … }

static unsigned long pd_count(u64 size, int shift)
{ … }

int i915_vm_alloc_pt_stash(struct i915_address_space *vm,
			   struct i915_vm_pt_stash *stash,
			   u64 size)
{ … }

int i915_vm_map_pt_stash(struct i915_address_space *vm,
			 struct i915_vm_pt_stash *stash)
{ … }

void i915_vm_free_pt_stash(struct i915_address_space *vm,
			   struct i915_vm_pt_stash *stash)
{ … }

void ppgtt_init(struct i915_ppgtt *ppgtt, struct intel_gt *gt,
		unsigned long lmem_pt_obj_flags)
{ … }