drivers/gpu/drm/imagination/pvr_vm.h

   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" */
  14 struct pvr_device;
  15 struct pvr_file;
  16
  17 /* Forward declaration from "pvr_gem.h" */
  18 struct pvr_gem_object;
  19
  20 /* Forward declaration from "pvr_vm.c" */
  21 struct pvr_vm_context;
  22
  23 /* Forward declaration from <uapi/drm/pvr_drm.h> */
  24 struct drm_pvr_ioctl_get_heap_info_args;
  25
  26 /* Forward declaration from <drm/drm_exec.h> */
  27 struct drm_exec;
  28
  29 /* Functions defined in pvr_vm.c */
  30
  31 bool pvr_device_addr_is_valid(u64 device_addr);
  32 bool pvr_device_addr_and_size_are_valid(struct pvr_vm_context *vm_ctx,
  33                                         u64 device_addr, u64 size);
  34
  35 struct pvr_vm_context *pvr_vm_create_context(struct pvr_device *pvr_dev,
  36                                              bool is_userspace_context);
  37
  38 int 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);
  41 int pvr_vm_unmap(struct pvr_vm_context *vm_ctx, u64 device_addr, u64 size);
  42 void pvr_vm_unmap_all(struct pvr_vm_context *vm_ctx);
  43
  44 dma_addr_t pvr_vm_get_page_table_root_addr(struct pvr_vm_context *vm_ctx);
  45 struct dma_resv *pvr_vm_get_dma_resv(struct pvr_vm_context *vm_ctx);
  46
  47 int pvr_static_data_areas_get(const struct pvr_device *pvr_dev,
  48                               struct drm_pvr_ioctl_dev_query_args *args);
  49 int pvr_heap_info_get(const struct pvr_device *pvr_dev,
  50                       struct drm_pvr_ioctl_dev_query_args *args);
  51 const struct drm_pvr_heap *pvr_find_heap_containing(struct pvr_device *pvr_dev,
  52                                                     u64 addr, u64 size);
  53
  54 struct pvr_gem_object *pvr_vm_find_gem_object(struct pvr_vm_context *vm_ctx,
  55                                               u64 device_addr,
  56                                               u64 *mapped_offset_out,
  57                                               u64 *mapped_size_out);
  58
  59 struct pvr_fw_object *
  60 pvr_vm_get_fw_mem_context(struct pvr_vm_context *vm_ctx);
  61
  62 struct pvr_vm_context *pvr_vm_context_lookup(struct pvr_file *pvr_file, u32 handle);
  63 struct pvr_vm_context *pvr_vm_context_get(struct pvr_vm_context *vm_ctx);
  64 bool pvr_vm_context_put(struct pvr_vm_context *vm_ctx);
  65 void pvr_destroy_vm_contexts_for_file(struct pvr_file *pvr_file);
  66
  67 #endif /* PVR_VM_H */