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 34struct 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 50static int sd_revalidate_disk(struct gendisk *disk); 51static void sd_rw_intr(struct scsi_cmnd * SCpnt); 52static int sd_probe(struct device *); 53static int sd_remove(struct device *); 54static void sd_shutdown(struct device *dev); 55static int sd_suspend(struct device *dev, pm_message_t state); 56static int sd_resume(struct device *dev); 57static void sd_rescan(struct device *); 58static int sd_init_command(struct scsi_cmnd *); 59static int sd_issue_flush(struct device *, sector_t *); 60static void sd_prepare_flush(request_queue_t *, struct request *); 61static void sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer); 62static void scsi_disk_release(struct class_device *cdev); 63static void sd_print_sense_hdr(struct scsi_disk *, struct scsi_sense_hdr *); 64static 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 */ 73