| Martin K. Petersen | e73aec8 | 2007-02-27 22:40:55 -0500 | [diff] [blame] | 1 | #ifndef _SCSI_DISK_H |
| 2 | #define _SCSI_DISK_H |
| 3 | |
| 4 | /* |
| 5 | * More than enough for everybody ;) The huge number of majors |
| 6 | * is a leftover from 16bit dev_t days, we don't really need that |
| 7 | * much numberspace. |
| 8 | */ |
| 9 | #define SD_MAJORS 16 |
| 10 | |
| 11 | /* |
| 12 | * This is limited by the naming scheme enforced in sd_probe, |
| 13 | * add another character to it if you really need more disks. |
| 14 | */ |
| 15 | #define SD_MAX_DISKS (((26 * 26) + 26 + 1) * 26) |
| 16 | |
| 17 | /* |
| 18 | * Time out in seconds for disks and Magneto-opticals (which are slower). |
| 19 | */ |
| 20 | #define SD_TIMEOUT (30 * HZ) |
| 21 | #define SD_MOD_TIMEOUT (75 * HZ) |
| 22 | |
| 23 | /* |
| 24 | * Number of allowed retries |
| 25 | */ |
| 26 | #define SD_MAX_RETRIES 5 |
| 27 | #define SD_PASSTHROUGH_RETRIES 1 |
| 28 | |
| 29 | /* |
| 30 | * Size of the initial data buffer for mode and read capacity data |
| 31 | */ |
| 32 | #define SD_BUF_SIZE 512 |
| 33 | |
| 34 | struct scsi_disk { |
| 35 | struct scsi_driver *driver; /* always &sd_template */ |
| 36 | struct scsi_device *device; |
| 37 | struct class_device cdev; |
| 38 | struct gendisk *disk; |
| 39 | unsigned int openers; /* protected by BKL for now, yuck */ |
| 40 | sector_t capacity; /* size in 512-byte sectors */ |
| 41 | u32 index; |
| 42 | u8 media_present; |
| 43 | u8 write_prot; |
| 44 | unsigned WCE : 1; /* state of disk WCE bit */ |
| 45 | unsigned RCD : 1; /* state of disk RCD bit, unused */ |
| 46 | unsigned DPOFUA : 1; /* state of disk DPOFUA bit */ |
| 47 | }; |
| 48 | #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,cdev) |
| 49 | |
| 50 | static int sd_revalidate_disk(struct gendisk *disk); |
| 51 | static void sd_rw_intr(struct scsi_cmnd * SCpnt); |
| 52 | static int sd_probe(struct device *); |
| 53 | static int sd_remove(struct device *); |
| 54 | static void sd_shutdown(struct device *dev); |
| Tejun Heo | c3c94c5 | 2007-03-21 00:13:59 +0900 | [diff] [blame] | 55 | static int sd_suspend(struct device *dev, pm_message_t state); |
| 56 | static int sd_resume(struct device *dev); |
| Martin K. Petersen | e73aec8 | 2007-02-27 22:40:55 -0500 | [diff] [blame] | 57 | static void sd_rescan(struct device *); |
| 58 | static int sd_init_command(struct scsi_cmnd *); |
| 59 | static int sd_issue_flush(struct device *, sector_t *); |
| Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 60 | static void sd_prepare_flush(struct request_queue *, struct request *); |
| Martin K. Petersen | e73aec8 | 2007-02-27 22:40:55 -0500 | [diff] [blame] | 61 | static void sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer); |
| 62 | static void scsi_disk_release(struct class_device *cdev); |
| 63 | static void sd_print_sense_hdr(struct scsi_disk *, struct scsi_sense_hdr *); |
| 64 | static void sd_print_result(struct scsi_disk *, int); |
| 65 | |
| 66 | #define sd_printk(prefix, sdsk, fmt, a...) \ |
| 67 | (sdsk)->disk ? \ |
| 68 | sdev_printk(prefix, (sdsk)->device, "[%s] " fmt, \ |
| 69 | (sdsk)->disk->disk_name, ##a) : \ |
| 70 | sdev_printk(prefix, (sdsk)->device, fmt, ##a) |
| 71 | |
| 72 | #endif /* _SCSI_DISK_H */ |