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arch
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sparc
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include
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asm
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iommu_64.h

iommu_64.h 1.8 KB
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  1. /* iommu.h: Definitions for the sun5 IOMMU.
    2. 

  2.  *
    3. 

  3.  * Copyright (C) 1996, 1999, 2007 David S. Miller (davem@davemloft.net)
    4. 

  4.  */
    5. 

  5. #ifndef _SPARC64_IOMMU_H
    6. 

  6. #define _SPARC64_IOMMU_H
    7. 

  7. 

  8. /* The format of an iopte in the page tables. */
    9. 

  9. #define IOPTE_VALID   0x8000000000000000UL
    10. 

  10. #define IOPTE_64K     0x2000000000000000UL
    11. 

  11. #define IOPTE_STBUF   0x1000000000000000UL
    12. 

  12. #define IOPTE_INTRA   0x0800000000000000UL
    13. 

  13. #define IOPTE_CONTEXT 0x07ff800000000000UL
    14. 

  14. #define IOPTE_PAGE    0x00007fffffffe000UL
    15. 

  15. #define IOPTE_CACHE   0x0000000000000010UL
    16. 

  16. #define IOPTE_WRITE   0x0000000000000002UL
    17. 

  17. 

  18. #define IOMMU_NUM_CTXS	4096
    19. 

  19. 

  20. struct iommu_arena {
    21. 

  21. 	unsigned long	*map;
    22. 

  22. 	unsigned int	hint;
    23. 

  23. 	unsigned int	limit;
    24. 

  24. };
    25. 

  25. 

  26. struct iommu {
    27. 

  27. 	spinlock_t		lock;
    28. 

  28. 	struct iommu_arena	arena;
    29. 

  29. 	void			(*flush_all)(struct iommu *);
    30. 

  30. 	iopte_t			*page_table;
    31. 

  31. 	u32			page_table_map_base;
    32. 

  32. 	unsigned long		iommu_control;
    33. 

  33. 	unsigned long		iommu_tsbbase;
    34. 

  34. 	unsigned long		iommu_flush;
    35. 

  35. 	unsigned long		iommu_flushinv;
    36. 

  36. 	unsigned long		iommu_tags;
    37. 

  37. 	unsigned long		iommu_ctxflush;
    38. 

  38. 	unsigned long		write_complete_reg;
    39. 

  39. 	unsigned long		dummy_page;
    40. 

  40. 	unsigned long		dummy_page_pa;
    41. 

  41. 	unsigned long		ctx_lowest_free;
    42. 

  42. 	DECLARE_BITMAP(ctx_bitmap, IOMMU_NUM_CTXS);
    43. 

  43. 	u32			dma_addr_mask;
    44. 

  44. };
    45. 

  45. 

  46. struct strbuf {
    47. 

  47. 	int			strbuf_enabled;
    48. 

  48. 	unsigned long		strbuf_control;
    49. 

  49. 	unsigned long		strbuf_pflush;
    50. 

  50. 	unsigned long		strbuf_fsync;
    51. 

  51. 	unsigned long		strbuf_err_stat;
    52. 

  52. 	unsigned long		strbuf_tag_diag;
    53. 

  53. 	unsigned long		strbuf_line_diag;
    54. 

  54. 	unsigned long		strbuf_ctxflush;
    55. 

  55. 	unsigned long		strbuf_ctxmatch_base;
    56. 

  56. 	unsigned long		strbuf_flushflag_pa;
    57. 

  57. 	volatile unsigned long *strbuf_flushflag;
    58. 

  58. 	volatile unsigned long	__flushflag_buf[(64+(64-1)) / sizeof(long)];
    59. 

  59. };
    60. 

  60. 

  61. extern int iommu_table_init(struct iommu *iommu, int tsbsize,
    62. 

  62. 			    u32 dma_offset, u32 dma_addr_mask,
    63. 

  63. 			    int numa_node);
    64. 

  64. 

  65. #endif /* !(_SPARC64_IOMMU_H) */
    66.