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include
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scsi
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sd.h

sd.h 2.2 KB
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  1. #ifndef _SCSI_DISK_H
    2. 

  2. #define _SCSI_DISK_H
    3. 

  3. 

  4. /*
    5. 

  5.  * More than enough for everybody ;)  The huge number of majors
    6. 

  6.  * is a leftover from 16bit dev_t days, we don't really need that
    7. 

  7.  * much numberspace.
    8. 

  8.  */
    9. 

  9. #define SD_MAJORS	16
    10. 

  10. 

  11. /*
    12. 

  12.  * This is limited by the naming scheme enforced in sd_probe,
    13. 

  13.  * add another character to it if you really need more disks.
    14. 

  14.  */
    15. 

  15. #define SD_MAX_DISKS	(((26 * 26) + 26 + 1) * 26)
    16. 

  16. 

  17. /*
    18. 

  18.  * Time out in seconds for disks and Magneto-opticals (which are slower).
    19. 

  19.  */
    20. 

  20. #define SD_TIMEOUT		(30 * HZ)
    21. 

  21. #define SD_MOD_TIMEOUT		(75 * HZ)
    22. 

  22. 

  23. /*
    24. 

  24.  * Number of allowed retries
    25. 

  25.  */
    26. 

  26. #define SD_MAX_RETRIES		5
    27. 

  27. #define SD_PASSTHROUGH_RETRIES	1
    28. 

  28. 

  29. /*
    30. 

  30.  * Size of the initial data buffer for mode and read capacity data
    31. 

  31.  */
    32. 

  32. #define SD_BUF_SIZE		512
    33. 

  33. 

  34. struct scsi_disk {
    35. 

  35. 	struct scsi_driver *driver;	/* always &sd_template */
    36. 

  36. 	struct scsi_device *device;
    37. 

  37. 	struct class_device cdev;
    38. 

  38. 	struct gendisk	*disk;
    39. 

  39. 	unsigned int	openers;	/* protected by BKL for now, yuck */
    40. 

  40. 	sector_t	capacity;	/* size in 512-byte sectors */
    41. 

  41. 	u32		index;
    42. 

  42. 	u8		media_present;
    43. 

  43. 	u8		write_prot;
    44. 

  44. 	unsigned	WCE : 1;	/* state of disk WCE bit */
    45. 

  45. 	unsigned	RCD : 1;	/* state of disk RCD bit, unused */
    46. 

  46. 	unsigned	DPOFUA : 1;	/* state of disk DPOFUA bit */
    47. 

  47. };
    48. 

  48. #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,cdev)
    49. 

  49. 

  50. static int  sd_revalidate_disk(struct gendisk *disk);
    51. 

  51. static void sd_rw_intr(struct scsi_cmnd * SCpnt);
    52. 

  52. static int  sd_probe(struct device *);
    53. 

  53. static int  sd_remove(struct device *);
    54. 

  54. static void sd_shutdown(struct device *dev);
    55. 

  55. static int sd_suspend(struct device *dev, pm_message_t state);
    56. 

  56. static int sd_resume(struct device *dev);
    57. 

  57. static void sd_rescan(struct device *);
    58. 

  58. static int  sd_init_command(struct scsi_cmnd *);
    59. 

  59. static void sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer);
    60. 

  60. static void scsi_disk_release(struct class_device *cdev);
    61. 

  61. static void sd_print_sense_hdr(struct scsi_disk *, struct scsi_sense_hdr *);
    62. 

  62. static void sd_print_result(struct scsi_disk *, int);
    63. 

  63. 

  64. #define sd_printk(prefix, sdsk, fmt, a...)				\
    65. 

  65.         (sdsk)->disk ?							\
    66. 

  66. 	sdev_printk(prefix, (sdsk)->device, "[%s] " fmt,		\
    67. 

  67. 		    (sdsk)->disk->disk_name, ##a) :			\
    68. 

  68. 	sdev_printk(prefix, (sdsk)->device, fmt, ##a)
    69. 

  69. 

  70. #endif /* _SCSI_DISK_H */
    71.