tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
2/* Copyright (c) 2023 Imagination Technologies Ltd. */
3
4#ifndef PVR_VM_H
5#define PVR_VM_H
6
7#include "pvr_rogue_mmu_defs.h"
8
9#include <uapi/drm/pvr_drm.h>
10
11#include <linux/types.h>
12
13/* Forward declaration from "pvr_device.h" */
14struct pvr_device;
15struct pvr_file;
16
17/* Forward declaration from "pvr_gem.h" */
18struct pvr_gem_object;
19
20/* Forward declaration from "pvr_vm.c" */
21struct pvr_vm_context;
22
23/* Forward declaration from <uapi/drm/pvr_drm.h> */
24struct drm_pvr_ioctl_get_heap_info_args;
25
26/* Forward declaration from <drm/drm_exec.h> */
27struct drm_exec;
28
29/* Functions defined in pvr_vm.c */
30
31bool pvr_device_addr_is_valid(u64 device_addr);
32bool pvr_device_addr_and_size_are_valid(struct pvr_vm_context *vm_ctx,
33 u64 device_addr, u64 size);
34
35struct pvr_vm_context *pvr_vm_create_context(struct pvr_device *pvr_dev,
36 bool is_userspace_context);
37
38int pvr_vm_map(struct pvr_vm_context *vm_ctx,
39 struct pvr_gem_object *pvr_obj, u64 pvr_obj_offset,
40 u64 device_addr, u64 size);
41int pvr_vm_unmap_obj(struct pvr_vm_context *vm_ctx,
42 struct pvr_gem_object *pvr_obj,
43 u64 device_addr, u64 size);
44int pvr_vm_unmap(struct pvr_vm_context *vm_ctx, u64 device_addr, u64 size);
45void pvr_vm_unmap_all(struct pvr_vm_context *vm_ctx);
46
47dma_addr_t pvr_vm_get_page_table_root_addr(struct pvr_vm_context *vm_ctx);
48struct dma_resv *pvr_vm_get_dma_resv(struct pvr_vm_context *vm_ctx);
49
50int pvr_static_data_areas_get(const struct pvr_device *pvr_dev,
51 struct drm_pvr_ioctl_dev_query_args *args);
52int pvr_heap_info_get(const struct pvr_device *pvr_dev,
53 struct drm_pvr_ioctl_dev_query_args *args);
54const struct drm_pvr_heap *pvr_find_heap_containing(struct pvr_device *pvr_dev,
55 u64 addr, u64 size);
56
57struct pvr_gem_object *pvr_vm_find_gem_object(struct pvr_vm_context *vm_ctx,
58 u64 device_addr,
59 u64 *mapped_offset_out,
60 u64 *mapped_size_out);
61
62struct pvr_fw_object *
63pvr_vm_get_fw_mem_context(struct pvr_vm_context *vm_ctx);
64
65struct pvr_vm_context *pvr_vm_context_lookup(struct pvr_file *pvr_file, u32 handle);
66struct pvr_vm_context *pvr_vm_context_get(struct pvr_vm_context *vm_ctx);
67bool pvr_vm_context_put(struct pvr_vm_context *vm_ctx);
68void pvr_destroy_vm_contexts_for_file(struct pvr_file *pvr_file);
69
70#endif /* PVR_VM_H */