lima_vm.h 1.5 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 OR MIT */
  2. /* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */
  3. #ifndef __LIMA_VM_H__
  4. #define __LIMA_VM_H__
  5. #include <drm/drm_mm.h>
  6. #include <linux/kref.h>
  7. #define LIMA_PAGE_SIZE 4096
  8. #define LIMA_PAGE_MASK (LIMA_PAGE_SIZE - 1)
  9. #define LIMA_PAGE_ENT_NUM (LIMA_PAGE_SIZE / sizeof(u32))
  10. #define LIMA_VM_NUM_PT_PER_BT_SHIFT 3
  11. #define LIMA_VM_NUM_PT_PER_BT (1 << LIMA_VM_NUM_PT_PER_BT_SHIFT)
  12. #define LIMA_VM_NUM_BT (LIMA_PAGE_ENT_NUM >> LIMA_VM_NUM_PT_PER_BT_SHIFT)
  13. #define LIMA_VA_RESERVE_START 0x0FFF00000ULL
  14. #define LIMA_VA_RESERVE_DLBU LIMA_VA_RESERVE_START
  15. #define LIMA_VA_RESERVE_END 0x100000000ULL
  16. struct lima_device;
  17. struct lima_vm_page {
  18. u32 *cpu;
  19. dma_addr_t dma;
  20. };
  21. struct lima_vm {
  22. struct mutex lock;
  23. struct kref refcount;
  24. struct drm_mm mm;
  25. struct lima_device *dev;
  26. struct lima_vm_page pd;
  27. struct lima_vm_page bts[LIMA_VM_NUM_BT];
  28. };
  29. int lima_vm_bo_add(struct lima_vm *vm, struct lima_bo *bo, bool create);
  30. void lima_vm_bo_del(struct lima_vm *vm, struct lima_bo *bo);
  31. u32 lima_vm_get_va(struct lima_vm *vm, struct lima_bo *bo);
  32. struct lima_vm *lima_vm_create(struct lima_device *dev);
  33. void lima_vm_release(struct kref *kref);
  34. static inline struct lima_vm *lima_vm_get(struct lima_vm *vm)
  35. {
  36. kref_get(&vm->refcount);
  37. return vm;
  38. }
  39. static inline void lima_vm_put(struct lima_vm *vm)
  40. {
  41. if (vm)
  42. kref_put(&vm->refcount, lima_vm_release);
  43. }
  44. void lima_vm_print(struct lima_vm *vm);
  45. int lima_vm_map_bo(struct lima_vm *vm, struct lima_bo *bo, int pageoff);
  46. #endif