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drivers
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dma-buf
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heaps
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qcom_system_heap.h

qcom_system_heap.h 2.0 KB
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  1. /* SPDX-License-Identifier: GPL-2.0-only */
    2. 

  2. /*
    3. 

  3.  * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
    4. 

  4.  * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
    5. 

  5.  */
    6. 

  6. 

  7. #ifndef _QCOM_SYSTEM_HEAP_H
    8. 

  8. #define _QCOM_SYSTEM_HEAP_H
    9. 

  9. 

  10. #include <linux/dma-heap.h>
    11. 

  11. #include <linux/err.h>
    12. 

  12. #include "qcom_sg_ops.h"
    13. 

  13. #include "qcom_dynamic_page_pool.h"
    14. 

  14. #include "qcom_sg_ops.h"
    15. 

  15. 

  16. struct qcom_system_heap {
    17. 

  17. 	int uncached;
    18. 

  18. 	struct dynamic_page_pool **pool_list;
    19. 

  19. 	atomic_long_t total_bytes;
    20. 

  20. };
    21. 

  21. 

  22. #ifdef CONFIG_QCOM_DMABUF_HEAPS_SYSTEM
    23. 

  23. void qcom_system_heap_create(const char *name, const char *system_alias, bool uncached);
    24. 

  24. void qcom_system_heap_free(struct qcom_sg_buffer *buffer);
    25. 

  25. struct page *qcom_sys_heap_alloc_largest_available(struct dynamic_page_pool **pools,
    26. 

  26. 						   unsigned long size,
    27. 

  27. 						   unsigned int max_order,
    28. 

  28. 						   bool movable);
    29. 

  29. int system_qcom_sg_buffer_alloc(struct dma_heap *heap,
    30. 

  30. 				struct qcom_sg_buffer *buffer,
    31. 

  31. 				unsigned long len,
    32. 

  32. 				bool movable);
    33. 

  33. enum zone_type dynamic_pool_gfp_zone(gfp_t flags);
    34. 

  34. 

  35. bool dynamic_pool_zone_watermark_ok_safe(struct zone *z, unsigned int order,
    36. 

  36. 					unsigned long mark, int highest_zoneidx);
    37. 

  37. #else
    38. 

  38. static inline void qcom_system_heap_create(const char *name, const char *system_alias,
    39. 

  39. 					   bool uncached)
    40. 

  40. {
    41. 

  41. 

  42. }
    43. 

  43. static inline void qcom_system_heap_free(struct qcom_sg_buffer *buffer)
    44. 

  44. {
    45. 

  45. 

  46. }
    47. 

  47. static inline struct page *qcom_sys_heap_alloc_largest_available(struct dynamic_page_pool **pools,
    48. 

  48. 								 unsigned long size,
    49. 

  49. 								 unsigned int max_order,
    50. 

  50. 								 bool movable)
    51. 

  51. {
    52. 

  52. 	return ERR_PTR(-EOPNOTSUPP);
    53. 

  53. }
    54. 

  54. static inline int system_qcom_sg_buffer_alloc(struct dma_heap *heap,
    55. 

  55. 					      struct qcom_sg_buffer *buffer,
    56. 

  56. 					      unsigned long len,
    57. 

  57. 					      bool movable)
    58. 

  58. {
    59. 

  59. 	return -EOPNOTSUPP;
    60. 

  60. }
    61. 

  61. enum zone_type dynamic_pool_gfp_zone(gfp_t flags)
    62. 

  62. {
    63. 

  63. 	return -EOPNOTSUPP;
    64. 

  64. }
    65. 

  65. 

  66. bool dynamic_pool_zone_watermark_ok_safe(struct zone *z, unsigned int order,
    67. 

  67. 					unsigned long mark, int highest_zoneidx)
    68. 

  68. {
    69. 

  69. 	return -EOPNOTSUPP;
    70. 

  70. }
    71. 

  71. #endif
    72. 

  72. 

  73. #endif /* _QCOM_SYSTEM_HEAP_H */
    74.