lmb.h 1.8 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. #ifndef _LINUX_LMB_H
  3. #define _LINUX_LMB_H
  4. #ifdef __KERNEL__
  5. #include <asm/types.h>
  6. #include <asm/u-boot.h>
  7. /*
  8. * Logical memory blocks.
  9. *
  10. * Copyright (C) 2001 Peter Bergner, IBM Corp.
  11. */
  12. #define MAX_LMB_REGIONS 8
  13. struct lmb_property {
  14. phys_addr_t base;
  15. phys_size_t size;
  16. };
  17. struct lmb_region {
  18. unsigned long cnt;
  19. phys_size_t size;
  20. struct lmb_property region[MAX_LMB_REGIONS+1];
  21. };
  22. struct lmb {
  23. struct lmb_region memory;
  24. struct lmb_region reserved;
  25. };
  26. extern void lmb_init(struct lmb *lmb);
  27. extern void lmb_init_and_reserve(struct lmb *lmb, bd_t *bd, void *fdt_blob);
  28. extern void lmb_init_and_reserve_range(struct lmb *lmb, phys_addr_t base,
  29. phys_size_t size, void *fdt_blob);
  30. extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  31. extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  32. extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align);
  33. extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
  34. phys_addr_t max_addr);
  35. extern phys_addr_t __lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
  36. phys_addr_t max_addr);
  37. extern phys_addr_t lmb_alloc_addr(struct lmb *lmb, phys_addr_t base,
  38. phys_size_t size);
  39. extern phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr);
  40. extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr);
  41. extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  42. extern void lmb_dump_all(struct lmb *lmb);
  43. static inline phys_size_t
  44. lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
  45. {
  46. return type->region[region_nr].size;
  47. }
  48. void board_lmb_reserve(struct lmb *lmb);
  49. void arch_lmb_reserve(struct lmb *lmb);
  50. #endif /* __KERNEL__ */
  51. #endif /* _LINUX_LMB_H */