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8d5e72dfdf
This update includes the usual round of major driver updates (hisi_sas, ufs, fnic, cxlflash, be2iscsi, ipr, stex). There's also the usual amount of cosmetic and spelling stuff. Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABAgAGBQJZClQkAAoJEAVr7HOZEZN4OmkP/j/JJx2ImGzTgil5S8yeSWPY 5Gqb8IK9rCQ+OJgCZYCz3JsLZZnwY4ODZ9tC1lO/3he6VfjIhcEs2/eXbTnEfsZx D3EwWEVR3wYBNZN0d4hQoudVbdCf6UuvsUvM1hDFO7by10qFEs0DqsufccpDlpG/ us96BWf7PgiNzHYSvZIlmsfEDzNDRRg7Dm1NuLOQvXw56zFGsrysCO6Tqg7/ScJm Unz/VlEe1DE7zE9QotsKNCht7xHkmn1vfuva1wqG2wMp7EHf0rKnavRYrWUrxiEy 2ig6GpR7mIHmVHS8PAMNhyS6iNxGQ3e50sAvZdqDlq42P73AEwbrOo5YhgsTJxWT vCpRAzSuHwPOPY3W2Aa1yJ10iOpoPKxXs2xSZuzpcz8XJ3RjHy+l90Y0VT4Jrvzv +dSY1cynshFccZmw2HQanlt1Ly9G3U8xmx8KIbnsIPCdSIQaQQD27H+Ip0YZ0fKt aLmMcQzffma3UP/LPmRAQ45bwx8rLi9M3DWbWOGmSkIRY3etPCXqNuDcC6h5p9TF 4W74oVcELTql/u8ATZNSbdHBsWAg3GATIkAgdqwLTk/CU/0OgGY8epILr3EM2bc6 vVbglwP9DiyVOikTLhVNJdZA97qHjZ1WXNo03eefFTBfPDcUlkZw4j2gufGuNFh2 5vA4C/aSl9uxaLInr3aC =kj7u -----END PGP SIGNATURE----- Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "This update includes the usual round of major driver updates (hisi_sas, ufs, fnic, cxlflash, be2iscsi, ipr, stex). There's also the usual amount of cosmetic and spelling stuff" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (155 commits) scsi: qla4xxx: fix spelling mistake: "Tempalate" -> "Template" scsi: stex: make S6flag static scsi: mac_esp: fix to pass correct device identity to free_irq() scsi: aacraid: pci_alloc_consistent() failures on ARM64 scsi: ufs: make ufshcd_get_lists_status() register operation obvious scsi: ufs: use MASK_EE_STATUS scsi: mac_esp: Replace bogus memory barrier with spinlock scsi: fcoe: make fcoe_e_d_tov and fcoe_r_a_tov static scsi: sd_zbc: Do not write lock zones for reset scsi: sd_zbc: Remove superfluous assignments scsi: sd: sd_zbc: Rename sd_zbc_setup_write_cmnd scsi: Improve scsi_get_sense_info_fld scsi: sd: Cleanup sd_done sense data handling scsi: sd: Improve sd_completed_bytes scsi: sd: Fix function descriptions scsi: mpt3sas: remove redundant wmb scsi: mpt: Move scsi_remove_host() out of mptscsih_remove_host() scsi: sg: reset 'res_in_use' after unlinking reserved array scsi: mvumi: remove code handling zero scsi_sg_count(scmd) case scsi: fusion: fix spelling mistake: "Persistancy" -> "Persistency" ...
327 lines
8.4 KiB
C
327 lines
8.4 KiB
C
#ifndef _SCSI_DISK_H
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#define _SCSI_DISK_H
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/*
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* More than enough for everybody ;) The huge number of majors
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* is a leftover from 16bit dev_t days, we don't really need that
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* much numberspace.
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*/
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#define SD_MAJORS 16
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/*
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* Time out in seconds for disks and Magneto-opticals (which are slower).
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*/
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#define SD_TIMEOUT (30 * HZ)
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#define SD_MOD_TIMEOUT (75 * HZ)
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/*
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* Flush timeout is a multiplier over the standard device timeout which is
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* user modifiable via sysfs but initially set to SD_TIMEOUT
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*/
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#define SD_FLUSH_TIMEOUT_MULTIPLIER 2
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#define SD_WRITE_SAME_TIMEOUT (120 * HZ)
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/*
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* Number of allowed retries
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*/
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#define SD_MAX_RETRIES 5
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#define SD_PASSTHROUGH_RETRIES 1
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#define SD_MAX_MEDIUM_TIMEOUTS 2
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/*
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* Size of the initial data buffer for mode and read capacity data
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*/
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#define SD_BUF_SIZE 512
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/*
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* Number of sectors at the end of the device to avoid multi-sector
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* accesses to in the case of last_sector_bug
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*/
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#define SD_LAST_BUGGY_SECTORS 8
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enum {
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SD_EXT_CDB_SIZE = 32, /* Extended CDB size */
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SD_MEMPOOL_SIZE = 2, /* CDB pool size */
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};
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enum {
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SD_DEF_XFER_BLOCKS = 0xffff,
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SD_MAX_XFER_BLOCKS = 0xffffffff,
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SD_MAX_WS10_BLOCKS = 0xffff,
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SD_MAX_WS16_BLOCKS = 0x7fffff,
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};
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enum {
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SD_LBP_FULL = 0, /* Full logical block provisioning */
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SD_LBP_UNMAP, /* Use UNMAP command */
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SD_LBP_WS16, /* Use WRITE SAME(16) with UNMAP bit */
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SD_LBP_WS10, /* Use WRITE SAME(10) with UNMAP bit */
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SD_LBP_ZERO, /* Use WRITE SAME(10) with zero payload */
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SD_LBP_DISABLE, /* Discard disabled due to failed cmd */
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};
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enum {
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SD_ZERO_WRITE = 0, /* Use WRITE(10/16) command */
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SD_ZERO_WS, /* Use WRITE SAME(10/16) command */
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SD_ZERO_WS16_UNMAP, /* Use WRITE SAME(16) with UNMAP */
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SD_ZERO_WS10_UNMAP, /* Use WRITE SAME(10) with UNMAP */
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};
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struct scsi_disk {
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struct scsi_driver *driver; /* always &sd_template */
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struct scsi_device *device;
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struct device dev;
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struct gendisk *disk;
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#ifdef CONFIG_BLK_DEV_ZONED
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unsigned int nr_zones;
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unsigned int zone_blocks;
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unsigned int zone_shift;
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unsigned long *zones_wlock;
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unsigned int zones_optimal_open;
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unsigned int zones_optimal_nonseq;
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unsigned int zones_max_open;
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#endif
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atomic_t openers;
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sector_t capacity; /* size in logical blocks */
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u32 max_xfer_blocks;
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u32 opt_xfer_blocks;
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u32 max_ws_blocks;
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u32 max_unmap_blocks;
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u32 unmap_granularity;
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u32 unmap_alignment;
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u32 index;
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unsigned int physical_block_size;
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unsigned int max_medium_access_timeouts;
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unsigned int medium_access_timed_out;
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u8 media_present;
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u8 write_prot;
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u8 protection_type;/* Data Integrity Field */
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u8 provisioning_mode;
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u8 zeroing_mode;
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unsigned ATO : 1; /* state of disk ATO bit */
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unsigned cache_override : 1; /* temp override of WCE,RCD */
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unsigned WCE : 1; /* state of disk WCE bit */
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unsigned RCD : 1; /* state of disk RCD bit, unused */
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unsigned DPOFUA : 1; /* state of disk DPOFUA bit */
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unsigned first_scan : 1;
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unsigned lbpme : 1;
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unsigned lbprz : 1;
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unsigned lbpu : 1;
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unsigned lbpws : 1;
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unsigned lbpws10 : 1;
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unsigned lbpvpd : 1;
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unsigned ws10 : 1;
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unsigned ws16 : 1;
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unsigned rc_basis: 2;
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unsigned zoned: 2;
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unsigned urswrz : 1;
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unsigned ignore_medium_access_errors : 1;
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};
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#define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)
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static inline struct scsi_disk *scsi_disk(struct gendisk *disk)
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{
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return container_of(disk->private_data, struct scsi_disk, driver);
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}
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#define sd_printk(prefix, sdsk, fmt, a...) \
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(sdsk)->disk ? \
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sdev_prefix_printk(prefix, (sdsk)->device, \
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(sdsk)->disk->disk_name, fmt, ##a) : \
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sdev_printk(prefix, (sdsk)->device, fmt, ##a)
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#define sd_first_printk(prefix, sdsk, fmt, a...) \
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do { \
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if ((sdkp)->first_scan) \
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sd_printk(prefix, sdsk, fmt, ##a); \
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} while (0)
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static inline int scsi_medium_access_command(struct scsi_cmnd *scmd)
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{
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switch (scmd->cmnd[0]) {
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case READ_6:
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case READ_10:
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case READ_12:
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case READ_16:
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case SYNCHRONIZE_CACHE:
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case VERIFY:
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case VERIFY_12:
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case VERIFY_16:
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case WRITE_6:
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case WRITE_10:
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case WRITE_12:
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case WRITE_16:
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case WRITE_SAME:
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case WRITE_SAME_16:
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case UNMAP:
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return 1;
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case VARIABLE_LENGTH_CMD:
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switch (scmd->cmnd[9]) {
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case READ_32:
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case VERIFY_32:
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case WRITE_32:
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case WRITE_SAME_32:
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return 1;
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}
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}
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return 0;
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}
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static inline sector_t logical_to_sectors(struct scsi_device *sdev, sector_t blocks)
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{
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return blocks << (ilog2(sdev->sector_size) - 9);
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}
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static inline unsigned int logical_to_bytes(struct scsi_device *sdev, sector_t blocks)
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{
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return blocks * sdev->sector_size;
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}
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static inline sector_t bytes_to_logical(struct scsi_device *sdev, unsigned int bytes)
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{
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return bytes >> ilog2(sdev->sector_size);
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}
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static inline sector_t sectors_to_logical(struct scsi_device *sdev, sector_t sector)
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{
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return sector >> (ilog2(sdev->sector_size) - 9);
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}
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/*
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* Look up the DIX operation based on whether the command is read or
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* write and whether dix and dif are enabled.
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*/
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static inline unsigned int sd_prot_op(bool write, bool dix, bool dif)
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{
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/* Lookup table: bit 2 (write), bit 1 (dix), bit 0 (dif) */
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const unsigned int ops[] = { /* wrt dix dif */
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SCSI_PROT_NORMAL, /* 0 0 0 */
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SCSI_PROT_READ_STRIP, /* 0 0 1 */
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SCSI_PROT_READ_INSERT, /* 0 1 0 */
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SCSI_PROT_READ_PASS, /* 0 1 1 */
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SCSI_PROT_NORMAL, /* 1 0 0 */
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SCSI_PROT_WRITE_INSERT, /* 1 0 1 */
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SCSI_PROT_WRITE_STRIP, /* 1 1 0 */
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SCSI_PROT_WRITE_PASS, /* 1 1 1 */
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};
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return ops[write << 2 | dix << 1 | dif];
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}
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/*
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* Returns a mask of the protection flags that are valid for a given DIX
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* operation.
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*/
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static inline unsigned int sd_prot_flag_mask(unsigned int prot_op)
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{
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const unsigned int flag_mask[] = {
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[SCSI_PROT_NORMAL] = 0,
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[SCSI_PROT_READ_STRIP] = SCSI_PROT_TRANSFER_PI |
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SCSI_PROT_GUARD_CHECK |
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SCSI_PROT_REF_CHECK |
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SCSI_PROT_REF_INCREMENT,
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[SCSI_PROT_READ_INSERT] = SCSI_PROT_REF_INCREMENT |
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SCSI_PROT_IP_CHECKSUM,
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[SCSI_PROT_READ_PASS] = SCSI_PROT_TRANSFER_PI |
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SCSI_PROT_GUARD_CHECK |
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SCSI_PROT_REF_CHECK |
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SCSI_PROT_REF_INCREMENT |
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SCSI_PROT_IP_CHECKSUM,
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[SCSI_PROT_WRITE_INSERT] = SCSI_PROT_TRANSFER_PI |
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SCSI_PROT_REF_INCREMENT,
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[SCSI_PROT_WRITE_STRIP] = SCSI_PROT_GUARD_CHECK |
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SCSI_PROT_REF_CHECK |
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SCSI_PROT_REF_INCREMENT |
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SCSI_PROT_IP_CHECKSUM,
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[SCSI_PROT_WRITE_PASS] = SCSI_PROT_TRANSFER_PI |
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SCSI_PROT_GUARD_CHECK |
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SCSI_PROT_REF_CHECK |
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SCSI_PROT_REF_INCREMENT |
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SCSI_PROT_IP_CHECKSUM,
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};
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return flag_mask[prot_op];
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}
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#ifdef CONFIG_BLK_DEV_INTEGRITY
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extern void sd_dif_config_host(struct scsi_disk *);
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extern void sd_dif_prepare(struct scsi_cmnd *scmd);
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extern void sd_dif_complete(struct scsi_cmnd *, unsigned int);
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#else /* CONFIG_BLK_DEV_INTEGRITY */
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static inline void sd_dif_config_host(struct scsi_disk *disk)
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{
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}
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static inline int sd_dif_prepare(struct scsi_cmnd *scmd)
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{
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return 0;
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}
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static inline void sd_dif_complete(struct scsi_cmnd *cmd, unsigned int a)
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{
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}
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#endif /* CONFIG_BLK_DEV_INTEGRITY */
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static inline int sd_is_zoned(struct scsi_disk *sdkp)
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{
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return sdkp->zoned == 1 || sdkp->device->type == TYPE_ZBC;
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}
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#ifdef CONFIG_BLK_DEV_ZONED
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extern int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buffer);
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extern void sd_zbc_remove(struct scsi_disk *sdkp);
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extern void sd_zbc_print_zones(struct scsi_disk *sdkp);
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extern int sd_zbc_write_lock_zone(struct scsi_cmnd *cmd);
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extern void sd_zbc_write_unlock_zone(struct scsi_cmnd *cmd);
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extern int sd_zbc_setup_report_cmnd(struct scsi_cmnd *cmd);
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extern int sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd);
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extern void sd_zbc_complete(struct scsi_cmnd *cmd, unsigned int good_bytes,
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struct scsi_sense_hdr *sshdr);
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#else /* CONFIG_BLK_DEV_ZONED */
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static inline int sd_zbc_read_zones(struct scsi_disk *sdkp,
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unsigned char *buf)
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{
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return 0;
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}
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static inline void sd_zbc_remove(struct scsi_disk *sdkp) {}
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static inline void sd_zbc_print_zones(struct scsi_disk *sdkp) {}
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static inline int sd_zbc_write_lock_zone(struct scsi_cmnd *cmd)
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{
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/* Let the drive fail requests */
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return BLKPREP_OK;
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}
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static inline void sd_zbc_write_unlock_zone(struct scsi_cmnd *cmd) {}
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static inline int sd_zbc_setup_report_cmnd(struct scsi_cmnd *cmd)
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{
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return BLKPREP_INVALID;
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}
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static inline int sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd)
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{
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return BLKPREP_INVALID;
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}
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static inline void sd_zbc_complete(struct scsi_cmnd *cmd,
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unsigned int good_bytes,
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struct scsi_sense_hdr *sshdr) {}
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#endif /* CONFIG_BLK_DEV_ZONED */
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#endif /* _SCSI_DISK_H */
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