1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2aa91696eSMartin K. Petersen #ifndef _SCSI_DISK_H 3aa91696eSMartin K. Petersen #define _SCSI_DISK_H 4aa91696eSMartin K. Petersen 5aa91696eSMartin K. Petersen /* 6aa91696eSMartin K. Petersen * More than enough for everybody ;) The huge number of majors 7aa91696eSMartin K. Petersen * is a leftover from 16bit dev_t days, we don't really need that 8aa91696eSMartin K. Petersen * much numberspace. 9aa91696eSMartin K. Petersen */ 10aa91696eSMartin K. Petersen #define SD_MAJORS 16 11aa91696eSMartin K. Petersen 12aa91696eSMartin K. Petersen /* 13aa91696eSMartin K. Petersen * Time out in seconds for disks and Magneto-opticals (which are slower). 14aa91696eSMartin K. Petersen */ 15aa91696eSMartin K. Petersen #define SD_TIMEOUT (30 * HZ) 16aa91696eSMartin K. Petersen #define SD_MOD_TIMEOUT (75 * HZ) 177e660100SJames Bottomley /* 187e660100SJames Bottomley * Flush timeout is a multiplier over the standard device timeout which is 197e660100SJames Bottomley * user modifiable via sysfs but initially set to SD_TIMEOUT 207e660100SJames Bottomley */ 217e660100SJames Bottomley #define SD_FLUSH_TIMEOUT_MULTIPLIER 2 225db44863SMartin K. Petersen #define SD_WRITE_SAME_TIMEOUT (120 * HZ) 23aa91696eSMartin K. Petersen 24aa91696eSMartin K. Petersen /* 25aa91696eSMartin K. Petersen * Number of allowed retries 26aa91696eSMartin K. Petersen */ 27aa91696eSMartin K. Petersen #define SD_MAX_RETRIES 5 28aa91696eSMartin K. Petersen #define SD_PASSTHROUGH_RETRIES 1 2918a4d0a2SMartin K. Petersen #define SD_MAX_MEDIUM_TIMEOUTS 2 30aa91696eSMartin K. Petersen 31aa91696eSMartin K. Petersen /* 32aa91696eSMartin K. Petersen * Size of the initial data buffer for mode and read capacity data 33aa91696eSMartin K. Petersen */ 34aa91696eSMartin K. Petersen #define SD_BUF_SIZE 512 35aa91696eSMartin K. Petersen 3618351070SLinus Torvalds /* 3718351070SLinus Torvalds * Number of sectors at the end of the device to avoid multi-sector 3818351070SLinus Torvalds * accesses to in the case of last_sector_bug 3918351070SLinus Torvalds */ 4018351070SLinus Torvalds #define SD_LAST_BUGGY_SECTORS 8 4118351070SLinus Torvalds 424e7392ecSMartin K. Petersen enum { 434e7392ecSMartin K. Petersen SD_EXT_CDB_SIZE = 32, /* Extended CDB size */ 444e7392ecSMartin K. Petersen SD_MEMPOOL_SIZE = 2, /* CDB pool size */ 454e7392ecSMartin K. Petersen }; 464e7392ecSMartin K. Petersen 47c98a0eb0SMartin K. Petersen enum { 48bcdb247cSMartin K. Petersen SD_DEF_XFER_BLOCKS = 0xffff, 49bcdb247cSMartin K. Petersen SD_MAX_XFER_BLOCKS = 0xffffffff, 505db44863SMartin K. Petersen SD_MAX_WS10_BLOCKS = 0xffff, 515db44863SMartin K. Petersen SD_MAX_WS16_BLOCKS = 0x7fffff, 525db44863SMartin K. Petersen }; 535db44863SMartin K. Petersen 545db44863SMartin K. Petersen enum { 55c98a0eb0SMartin K. Petersen SD_LBP_FULL = 0, /* Full logical block provisioning */ 56c98a0eb0SMartin K. Petersen SD_LBP_UNMAP, /* Use UNMAP command */ 57c98a0eb0SMartin K. Petersen SD_LBP_WS16, /* Use WRITE SAME(16) with UNMAP bit */ 58c98a0eb0SMartin K. Petersen SD_LBP_WS10, /* Use WRITE SAME(10) with UNMAP bit */ 59c98a0eb0SMartin K. Petersen SD_LBP_ZERO, /* Use WRITE SAME(10) with zero payload */ 60c98a0eb0SMartin K. Petersen SD_LBP_DISABLE, /* Discard disabled due to failed cmd */ 61c98a0eb0SMartin K. Petersen }; 62c98a0eb0SMartin K. Petersen 63e6bd9312SMartin K. Petersen enum { 64e6bd9312SMartin K. Petersen SD_ZERO_WRITE = 0, /* Use WRITE(10/16) command */ 65e6bd9312SMartin K. Petersen SD_ZERO_WS, /* Use WRITE SAME(10/16) command */ 66e6bd9312SMartin K. Petersen SD_ZERO_WS16_UNMAP, /* Use WRITE SAME(16) with UNMAP */ 67e6bd9312SMartin K. Petersen SD_ZERO_WS10_UNMAP, /* Use WRITE SAME(10) with UNMAP */ 68e6bd9312SMartin K. Petersen }; 69e6bd9312SMartin K. Petersen 70aa91696eSMartin K. Petersen struct scsi_disk { 71aa91696eSMartin K. Petersen struct scsi_driver *driver; /* always &sd_template */ 72aa91696eSMartin K. Petersen struct scsi_device *device; 73aa91696eSMartin K. Petersen struct device dev; 74aa91696eSMartin K. Petersen struct gendisk *disk; 75d80210f2SChristoph Hellwig struct opal_dev *opal_dev; 7689d94756SHannes Reinecke #ifdef CONFIG_BLK_DEV_ZONED 77354f1132SBart Van Assche u32 nr_zones; 78354f1132SBart Van Assche u32 zone_blocks; 79354f1132SBart Van Assche u32 zones_optimal_open; 80354f1132SBart Van Assche u32 zones_optimal_nonseq; 81354f1132SBart Van Assche u32 zones_max_open; 8289d94756SHannes Reinecke #endif 83409f3499SArnd Bergmann atomic_t openers; 84f08bb1e0SMartin K. Petersen sector_t capacity; /* size in logical blocks */ 85bcdb247cSMartin K. Petersen u32 max_xfer_blocks; 86ca369d51SMartin K. Petersen u32 opt_xfer_blocks; 87c98a0eb0SMartin K. Petersen u32 max_ws_blocks; 88c98a0eb0SMartin K. Petersen u32 max_unmap_blocks; 89c98a0eb0SMartin K. Petersen u32 unmap_granularity; 90c98a0eb0SMartin K. Petersen u32 unmap_alignment; 91aa91696eSMartin K. Petersen u32 index; 92526f7c79SMartin K. Petersen unsigned int physical_block_size; 9318a4d0a2SMartin K. Petersen unsigned int max_medium_access_timeouts; 9418a4d0a2SMartin K. Petersen unsigned int medium_access_timed_out; 95aa91696eSMartin K. Petersen u8 media_present; 96aa91696eSMartin K. Petersen u8 write_prot; 97e0597d70SMartin K. Petersen u8 protection_type;/* Data Integrity Field */ 98c98a0eb0SMartin K. Petersen u8 provisioning_mode; 99e6bd9312SMartin K. Petersen u8 zeroing_mode; 100e0597d70SMartin K. Petersen unsigned ATO : 1; /* state of disk ATO bit */ 10139c60a09SJames Bottomley unsigned cache_override : 1; /* temp override of WCE,RCD */ 102aa91696eSMartin K. Petersen unsigned WCE : 1; /* state of disk WCE bit */ 103aa91696eSMartin K. Petersen unsigned RCD : 1; /* state of disk RCD bit, unused */ 104aa91696eSMartin K. Petersen unsigned DPOFUA : 1; /* state of disk DPOFUA bit */ 10570a9b873SMartin K. Petersen unsigned first_scan : 1; 106c98a0eb0SMartin K. Petersen unsigned lbpme : 1; 107c98a0eb0SMartin K. Petersen unsigned lbprz : 1; 108c98a0eb0SMartin K. Petersen unsigned lbpu : 1; 109c98a0eb0SMartin K. Petersen unsigned lbpws : 1; 110c98a0eb0SMartin K. Petersen unsigned lbpws10 : 1; 111c98a0eb0SMartin K. Petersen unsigned lbpvpd : 1; 11266c28f97SMartin K. Petersen unsigned ws10 : 1; 1135db44863SMartin K. Petersen unsigned ws16 : 1; 11489d94756SHannes Reinecke unsigned rc_basis: 2; 11589d94756SHannes Reinecke unsigned zoned: 2; 11689d94756SHannes Reinecke unsigned urswrz : 1; 117d80210f2SChristoph Hellwig unsigned security : 1; 1187a38dc0bSHannes Reinecke unsigned ignore_medium_access_errors : 1; 119aa91696eSMartin K. Petersen }; 120aa91696eSMartin K. Petersen #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev) 121aa91696eSMartin K. Petersen 1225b635da1SMartin K. Petersen static inline struct scsi_disk *scsi_disk(struct gendisk *disk) 1235b635da1SMartin K. Petersen { 1245b635da1SMartin K. Petersen return container_of(disk->private_data, struct scsi_disk, driver); 1255b635da1SMartin K. Petersen } 1265b635da1SMartin K. Petersen 127aa91696eSMartin K. Petersen #define sd_printk(prefix, sdsk, fmt, a...) \ 128aa91696eSMartin K. Petersen (sdsk)->disk ? \ 12922e0d994SHannes Reinecke sdev_prefix_printk(prefix, (sdsk)->device, \ 13022e0d994SHannes Reinecke (sdsk)->disk->disk_name, fmt, ##a) : \ 131aa91696eSMartin K. Petersen sdev_printk(prefix, (sdsk)->device, fmt, ##a) 132aa91696eSMartin K. Petersen 133b2bff6ceSMartin K. Petersen #define sd_first_printk(prefix, sdsk, fmt, a...) \ 134b2bff6ceSMartin K. Petersen do { \ 135df46cac3SDietmar Hahn if ((sdsk)->first_scan) \ 136b2bff6ceSMartin K. Petersen sd_printk(prefix, sdsk, fmt, ##a); \ 137b2bff6ceSMartin K. Petersen } while (0) 138b2bff6ceSMartin K. Petersen 13918a4d0a2SMartin K. Petersen static inline int scsi_medium_access_command(struct scsi_cmnd *scmd) 14018a4d0a2SMartin K. Petersen { 14118a4d0a2SMartin K. Petersen switch (scmd->cmnd[0]) { 14218a4d0a2SMartin K. Petersen case READ_6: 14318a4d0a2SMartin K. Petersen case READ_10: 14418a4d0a2SMartin K. Petersen case READ_12: 14518a4d0a2SMartin K. Petersen case READ_16: 14618a4d0a2SMartin K. Petersen case SYNCHRONIZE_CACHE: 14718a4d0a2SMartin K. Petersen case VERIFY: 14818a4d0a2SMartin K. Petersen case VERIFY_12: 14918a4d0a2SMartin K. Petersen case VERIFY_16: 15018a4d0a2SMartin K. Petersen case WRITE_6: 15118a4d0a2SMartin K. Petersen case WRITE_10: 15218a4d0a2SMartin K. Petersen case WRITE_12: 15318a4d0a2SMartin K. Petersen case WRITE_16: 15418a4d0a2SMartin K. Petersen case WRITE_SAME: 15518a4d0a2SMartin K. Petersen case WRITE_SAME_16: 15618a4d0a2SMartin K. Petersen case UNMAP: 15718a4d0a2SMartin K. Petersen return 1; 15818a4d0a2SMartin K. Petersen case VARIABLE_LENGTH_CMD: 15918a4d0a2SMartin K. Petersen switch (scmd->cmnd[9]) { 16018a4d0a2SMartin K. Petersen case READ_32: 16118a4d0a2SMartin K. Petersen case VERIFY_32: 16218a4d0a2SMartin K. Petersen case WRITE_32: 16318a4d0a2SMartin K. Petersen case WRITE_SAME_32: 16418a4d0a2SMartin K. Petersen return 1; 16518a4d0a2SMartin K. Petersen } 16618a4d0a2SMartin K. Petersen } 16718a4d0a2SMartin K. Petersen 16818a4d0a2SMartin K. Petersen return 0; 16918a4d0a2SMartin K. Petersen } 17018a4d0a2SMartin K. Petersen 171f08bb1e0SMartin K. Petersen static inline sector_t logical_to_sectors(struct scsi_device *sdev, sector_t blocks) 172f08bb1e0SMartin K. Petersen { 173f08bb1e0SMartin K. Petersen return blocks << (ilog2(sdev->sector_size) - 9); 174f08bb1e0SMartin K. Petersen } 175f08bb1e0SMartin K. Petersen 1766b7e9cdeSMartin K. Petersen static inline unsigned int logical_to_bytes(struct scsi_device *sdev, sector_t blocks) 1776b7e9cdeSMartin K. Petersen { 1786b7e9cdeSMartin K. Petersen return blocks * sdev->sector_size; 1796b7e9cdeSMartin K. Petersen } 1806b7e9cdeSMartin K. Petersen 1816eadc612SDamien Le Moal static inline sector_t bytes_to_logical(struct scsi_device *sdev, unsigned int bytes) 1826eadc612SDamien Le Moal { 1836eadc612SDamien Le Moal return bytes >> ilog2(sdev->sector_size); 1846eadc612SDamien Le Moal } 1856eadc612SDamien Le Moal 18689d94756SHannes Reinecke static inline sector_t sectors_to_logical(struct scsi_device *sdev, sector_t sector) 18789d94756SHannes Reinecke { 18889d94756SHannes Reinecke return sector >> (ilog2(sdev->sector_size) - 9); 18989d94756SHannes Reinecke } 19089d94756SHannes Reinecke 1914c393e6eSJames Bottomley #ifdef CONFIG_BLK_DEV_INTEGRITY 192af55ff67SMartin K. Petersen 193af55ff67SMartin K. Petersen extern void sd_dif_config_host(struct scsi_disk *); 194af55ff67SMartin K. Petersen 195af55ff67SMartin K. Petersen #else /* CONFIG_BLK_DEV_INTEGRITY */ 196af55ff67SMartin K. Petersen 1974c393e6eSJames Bottomley static inline void sd_dif_config_host(struct scsi_disk *disk) 1984c393e6eSJames Bottomley { 1994c393e6eSJames Bottomley } 200af55ff67SMartin K. Petersen 201af55ff67SMartin K. Petersen #endif /* CONFIG_BLK_DEV_INTEGRITY */ 202af55ff67SMartin K. Petersen 20389d94756SHannes Reinecke static inline int sd_is_zoned(struct scsi_disk *sdkp) 20489d94756SHannes Reinecke { 20589d94756SHannes Reinecke return sdkp->zoned == 1 || sdkp->device->type == TYPE_ZBC; 20689d94756SHannes Reinecke } 20789d94756SHannes Reinecke 20889d94756SHannes Reinecke #ifdef CONFIG_BLK_DEV_ZONED 20989d94756SHannes Reinecke 21089d94756SHannes Reinecke extern int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buffer); 21189d94756SHannes Reinecke extern void sd_zbc_print_zones(struct scsi_disk *sdkp); 212d81e9d49SChaitanya Kulkarni extern blk_status_t sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd, bool all); 21389d94756SHannes Reinecke extern void sd_zbc_complete(struct scsi_cmnd *cmd, unsigned int good_bytes, 21489d94756SHannes Reinecke struct scsi_sense_hdr *sshdr); 215e76239a3SChristoph Hellwig extern int sd_zbc_report_zones(struct gendisk *disk, sector_t sector, 216bd976e52SDamien Le Moal struct blk_zone *zones, unsigned int *nr_zones); 21789d94756SHannes Reinecke 21889d94756SHannes Reinecke #else /* CONFIG_BLK_DEV_ZONED */ 21989d94756SHannes Reinecke 22089d94756SHannes Reinecke static inline int sd_zbc_read_zones(struct scsi_disk *sdkp, 22189d94756SHannes Reinecke unsigned char *buf) 22289d94756SHannes Reinecke { 22389d94756SHannes Reinecke return 0; 22489d94756SHannes Reinecke } 22589d94756SHannes Reinecke 22689d94756SHannes Reinecke static inline void sd_zbc_print_zones(struct scsi_disk *sdkp) {} 22789d94756SHannes Reinecke 228d81e9d49SChaitanya Kulkarni static inline blk_status_t sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd, 229d81e9d49SChaitanya Kulkarni bool all) 23089d94756SHannes Reinecke { 231159b2cbfSChristoph Hellwig return BLK_STS_TARGET; 23289d94756SHannes Reinecke } 23389d94756SHannes Reinecke 23489d94756SHannes Reinecke static inline void sd_zbc_complete(struct scsi_cmnd *cmd, 23589d94756SHannes Reinecke unsigned int good_bytes, 23689d94756SHannes Reinecke struct scsi_sense_hdr *sshdr) {} 23789d94756SHannes Reinecke 238e76239a3SChristoph Hellwig #define sd_zbc_report_zones NULL 239e76239a3SChristoph Hellwig 24089d94756SHannes Reinecke #endif /* CONFIG_BLK_DEV_ZONED */ 24189d94756SHannes Reinecke 242aa91696eSMartin K. Petersen #endif /* _SCSI_DISK_H */ 243