1 /* 2 * sd.h Copyright (C) 1992 Drew Eckhardt 3 * SCSI disk driver header file by 4 * Drew Eckhardt 5 * 6 * <drew@colorado.edu> 7 * 8 * Modified by Eric Youngdale eric@aib.com to 9 * add scatter-gather, multiple outstanding request, and other 10 * enhancements. 11 */ 12 #ifndef _SD_H 13 #define _SD_H 14 /* 15 $Header: /usr/src/linux/kernel/blk_drv/scsi/RCS/sd.h,v 1.1 1992/07/24 06:27:38 root Exp root $ 16 */ 17 18 #ifndef _SCSI_H 19 #include "scsi.h" 20 #endif 21 22 #ifndef _GENDISK_H 23 #include <linux/genhd.h> 24 #endif 25 26 extern struct hd_struct * sd; 27 28 typedef struct scsi_disk { 29 unsigned capacity; /* size in blocks */ 30 unsigned sector_size; /* size in bytes */ 31 Scsi_Device *device; 32 unsigned char sector_bit_size; /* sector_size = 2 to the bit size power */ 33 unsigned char sector_bit_shift; /* power of 2 sectors per FS block */ 34 unsigned ten:1; /* support ten byte read / write */ 35 unsigned remap:1; /* support remapping */ 36 unsigned has_part_table:1; /* has partition table */ 37 } Scsi_Disk; 38 39 extern Scsi_Disk * rscsi_disks; 40 41 extern int revalidate_scsidisk(kdev_t dev, int maxusage); 42 43 #endif 44 45 /* 46 * Overrides for Emacs so that we follow Linus's tabbing style. 47 * Emacs will notice this stuff at the end of the file and automatically 48 * adjust the settings for this buffer only. This must remain at the end 49 * of the file. 50 * --------------------------------------------------------------------------- 51 * Local variables: 52 * c-indent-level: 4 53 * c-brace-imaginary-offset: 0 54 * c-brace-offset: -4 55 * c-argdecl-indent: 4 56 * c-label-offset: -4 57 * c-continued-statement-offset: 4 58 * c-continued-brace-offset: 0 59 * indent-tabs-mode: nil 60 * tab-width: 8 61 * End: 62 */ 63