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asm-x86_64
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calgary.h

calgary.h 2.1 KB
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  1. /*
    2. 

  2.  * Derived from include/asm-powerpc/iommu.h
    3. 

  3.  *
    4. 

  4.  * Copyright (C) IBM Corporation, 2006
    5. 

  5.  *
    6. 

  6.  * Author: Jon Mason <jdmason@us.ibm.com>
    7. 

  7.  * Author: Muli Ben-Yehuda <muli@il.ibm.com>
    8. 

  8.  *
    9. 

  9.  * This program is free software; you can redistribute it and/or modify
    10. 

  10.  * it under the terms of the GNU General Public License as published by
    11. 

  11.  * the Free Software Foundation; either version 2 of the License, or
    12. 

  12.  * (at your option) any later version.
    13. 

  13.  *
    14. 

  14.  * This program is distributed in the hope that it will be useful,
    15. 

  15.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    16. 

  16.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    17. 

  17.  * GNU General Public License for more details.
    18. 

  18.  *
    19. 

  19.  * You should have received a copy of the GNU General Public License
    20. 

  20.  * along with this program; if not, write to the Free Software
    21. 

  21.  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
    22. 

  22.  */
    23. 

  23. 

  24. #ifndef _ASM_X86_64_CALGARY_H
    25. 

  25. #define _ASM_X86_64_CALGARY_H
    26. 

  26. 

  27. #include <linux/spinlock.h>
    28. 

  28. #include <linux/device.h>
    29. 

  29. #include <linux/dma-mapping.h>
    30. 

  30. #include <asm/types.h>
    31. 

  31. 

  32. struct iommu_table {
    33. 

  33. 	unsigned long  it_base;      /* mapped address of tce table */
    34. 

  34. 	unsigned long  it_hint;      /* Hint for next alloc */
    35. 

  35. 	unsigned long *it_map;       /* A simple allocation bitmap for now */
    36. 

  36. 	void __iomem  *bbar;         /* Bridge BAR */
    37. 

  37. 	u64	       tar_val;      /* Table Address Register */
    38. 

  38. 	struct timer_list watchdog_timer;
    39. 

  39. 	spinlock_t     it_lock;      /* Protects it_map */
    40. 

  40. 	unsigned int   it_size;      /* Size of iommu table in entries */
    41. 

  41. 	unsigned char  it_busno;     /* Bus number this table belongs to */
    42. 

  42. };
    43. 

  43. 

  44. #define TCE_TABLE_SIZE_UNSPECIFIED	~0
    45. 

  45. #define TCE_TABLE_SIZE_64K		0
    46. 

  46. #define TCE_TABLE_SIZE_128K		1
    47. 

  47. #define TCE_TABLE_SIZE_256K		2
    48. 

  48. #define TCE_TABLE_SIZE_512K		3
    49. 

  49. #define TCE_TABLE_SIZE_1M		4
    50. 

  50. #define TCE_TABLE_SIZE_2M		5
    51. 

  51. #define TCE_TABLE_SIZE_4M		6
    52. 

  52. #define TCE_TABLE_SIZE_8M		7
    53. 

  53. 

  54. #ifdef CONFIG_CALGARY_IOMMU
    55. 

  55. extern int calgary_iommu_init(void);
    56. 

  56. extern void detect_calgary(void);
    57. 

  57. #else
    58. 

  58. static inline int calgary_iommu_init(void) { return 1; }
    59. 

  59. static inline void detect_calgary(void) { return; }
    60. 

  60. #endif
    61. 

  61. 

  62. #endif /* _ASM_X86_64_CALGARY_H */
    63.