msm_mmu.h 1.6 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162
  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * Copyright (C) 2013 Red Hat
  4. * Author: Rob Clark <[email protected]>
  5. */
  6. #ifndef __MSM_MMU_H__
  7. #define __MSM_MMU_H__
  8. #include <linux/iommu.h>
  9. struct msm_mmu_funcs {
  10. void (*detach)(struct msm_mmu *mmu);
  11. int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt,
  12. size_t len, int prot);
  13. int (*unmap)(struct msm_mmu *mmu, uint64_t iova, size_t len);
  14. void (*destroy)(struct msm_mmu *mmu);
  15. void (*resume_translation)(struct msm_mmu *mmu);
  16. };
  17. enum msm_mmu_type {
  18. MSM_MMU_GPUMMU,
  19. MSM_MMU_IOMMU,
  20. MSM_MMU_IOMMU_PAGETABLE,
  21. };
  22. struct msm_mmu {
  23. const struct msm_mmu_funcs *funcs;
  24. struct device *dev;
  25. int (*handler)(void *arg, unsigned long iova, int flags, void *data);
  26. void *arg;
  27. enum msm_mmu_type type;
  28. };
  29. static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
  30. const struct msm_mmu_funcs *funcs, enum msm_mmu_type type)
  31. {
  32. mmu->dev = dev;
  33. mmu->funcs = funcs;
  34. mmu->type = type;
  35. }
  36. struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain);
  37. struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu);
  38. static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
  39. int (*handler)(void *arg, unsigned long iova, int flags, void *data))
  40. {
  41. mmu->arg = arg;
  42. mmu->handler = handler;
  43. }
  44. struct msm_mmu *msm_iommu_pagetable_create(struct msm_mmu *parent);
  45. void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base,
  46. dma_addr_t *tran_error);
  47. int msm_iommu_pagetable_params(struct msm_mmu *mmu, phys_addr_t *ttbr,
  48. int *asid);
  49. #endif /* __MSM_MMU_H__ */