1 /* SPDX-License-Identifier: GPL-2.0 */
6 * More than enough for everybody ;) The huge number of majors
7 * is a leftover from 16bit dev_t days, we don't really need that
13 * Time out in seconds for disks and Magneto-opticals (which are slower).
15 #define SD_TIMEOUT (30 * HZ)
16 #define SD_MOD_TIMEOUT (75 * HZ)
18 * Flush timeout is a multiplier over the standard device timeout which is
19 * user modifiable via sysfs but initially set to SD_TIMEOUT
21 #define SD_FLUSH_TIMEOUT_MULTIPLIER 2
22 #define SD_WRITE_SAME_TIMEOUT (120 * HZ)
25 * Number of allowed retries
27 #define SD_MAX_RETRIES 5
28 #define SD_PASSTHROUGH_RETRIES 1
29 #define SD_MAX_MEDIUM_TIMEOUTS 2
32 * Size of the initial data buffer for mode and read capacity data
34 #define SD_BUF_SIZE 512
37 * Number of sectors at the end of the device to avoid multi-sector
38 * accesses to in the case of last_sector_bug
40 #define SD_LAST_BUGGY_SECTORS 8
43 SD_EXT_CDB_SIZE = 32, /* Extended CDB size */
44 SD_MEMPOOL_SIZE = 2, /* CDB pool size */
48 SD_DEF_XFER_BLOCKS = 0xffff,
49 SD_MAX_XFER_BLOCKS = 0xffffffff,
50 SD_MAX_WS10_BLOCKS = 0xffff,
51 SD_MAX_WS16_BLOCKS = 0x7fffff,
55 SD_LBP_FULL = 0, /* Full logical block provisioning */
56 SD_LBP_UNMAP, /* Use UNMAP command */
57 SD_LBP_WS16, /* Use WRITE SAME(16) with UNMAP bit */
58 SD_LBP_WS10, /* Use WRITE SAME(10) with UNMAP bit */
59 SD_LBP_ZERO, /* Use WRITE SAME(10) with zero payload */
60 SD_LBP_DISABLE, /* Discard disabled due to failed cmd */
64 SD_ZERO_WRITE = 0, /* Use WRITE(10/16) command */
65 SD_ZERO_WS, /* Use WRITE SAME(10/16) command */
66 SD_ZERO_WS16_UNMAP, /* Use WRITE SAME(16) with UNMAP */
67 SD_ZERO_WS10_UNMAP, /* Use WRITE SAME(10) with UNMAP */
71 struct scsi_driver *driver; /* always &sd_template */
72 struct scsi_device *device;
75 struct opal_dev *opal_dev;
76 #ifdef CONFIG_BLK_DEV_ZONED
79 u32 zones_optimal_open;
80 u32 zones_optimal_nonseq;
83 spinlock_t zones_wp_offset_lock;
85 struct mutex rev_mutex;
86 struct work_struct zone_wp_offset_work;
87 char *zone_wp_update_buf;
90 sector_t capacity; /* size in logical blocks */
95 u32 unmap_granularity;
98 unsigned int physical_block_size;
99 unsigned int max_medium_access_timeouts;
100 unsigned int medium_access_timed_out;
103 u8 protection_type;/* Data Integrity Field */
104 u8 provisioning_mode;
106 unsigned ATO : 1; /* state of disk ATO bit */
107 unsigned cache_override : 1; /* temp override of WCE,RCD */
108 unsigned WCE : 1; /* state of disk WCE bit */
109 unsigned RCD : 1; /* state of disk RCD bit, unused */
110 unsigned DPOFUA : 1; /* state of disk DPOFUA bit */
111 unsigned first_scan : 1;
116 unsigned lbpws10 : 1;
120 unsigned rc_basis: 2;
123 unsigned security : 1;
124 unsigned ignore_medium_access_errors : 1;
126 #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)
128 static inline struct scsi_disk *scsi_disk(struct gendisk *disk)
130 return container_of(disk->private_data, struct scsi_disk, driver);
133 #define sd_printk(prefix, sdsk, fmt, a...) \
135 sdev_prefix_printk(prefix, (sdsk)->device, \
136 (sdsk)->disk->disk_name, fmt, ##a) : \
137 sdev_printk(prefix, (sdsk)->device, fmt, ##a)
139 #define sd_first_printk(prefix, sdsk, fmt, a...) \
141 if ((sdsk)->first_scan) \
142 sd_printk(prefix, sdsk, fmt, ##a); \
145 static inline int scsi_medium_access_command(struct scsi_cmnd *scmd)
147 switch (scmd->cmnd[0]) {
152 case SYNCHRONIZE_CACHE:
164 case VARIABLE_LENGTH_CMD:
165 switch (scmd->cmnd[9]) {
177 static inline sector_t logical_to_sectors(struct scsi_device *sdev, sector_t blocks)
179 return blocks << (ilog2(sdev->sector_size) - 9);
182 static inline unsigned int logical_to_bytes(struct scsi_device *sdev, sector_t blocks)
184 return blocks * sdev->sector_size;
187 static inline sector_t bytes_to_logical(struct scsi_device *sdev, unsigned int bytes)
189 return bytes >> ilog2(sdev->sector_size);
192 static inline sector_t sectors_to_logical(struct scsi_device *sdev, sector_t sector)
194 return sector >> (ilog2(sdev->sector_size) - 9);
197 #ifdef CONFIG_BLK_DEV_INTEGRITY
199 extern void sd_dif_config_host(struct scsi_disk *);
201 #else /* CONFIG_BLK_DEV_INTEGRITY */
203 static inline void sd_dif_config_host(struct scsi_disk *disk)
207 #endif /* CONFIG_BLK_DEV_INTEGRITY */
209 static inline int sd_is_zoned(struct scsi_disk *sdkp)
211 return sdkp->zoned == 1 || sdkp->device->type == TYPE_ZBC;
214 #ifdef CONFIG_BLK_DEV_ZONED
216 int sd_zbc_init_disk(struct scsi_disk *sdkp);
217 void sd_zbc_release_disk(struct scsi_disk *sdkp);
218 extern int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buffer);
219 extern void sd_zbc_print_zones(struct scsi_disk *sdkp);
220 blk_status_t sd_zbc_setup_zone_mgmt_cmnd(struct scsi_cmnd *cmd,
221 unsigned char op, bool all);
222 unsigned int sd_zbc_complete(struct scsi_cmnd *cmd, unsigned int good_bytes,
223 struct scsi_sense_hdr *sshdr);
224 int sd_zbc_report_zones(struct gendisk *disk, sector_t sector,
225 unsigned int nr_zones, report_zones_cb cb, void *data);
227 blk_status_t sd_zbc_prepare_zone_append(struct scsi_cmnd *cmd, sector_t *lba,
228 unsigned int nr_blocks);
230 #else /* CONFIG_BLK_DEV_ZONED */
232 static inline int sd_zbc_init(void)
237 static inline int sd_zbc_init_disk(struct scsi_disk *sdkp)
242 static inline void sd_zbc_exit(void) {}
243 static inline void sd_zbc_release_disk(struct scsi_disk *sdkp) {}
245 static inline int sd_zbc_read_zones(struct scsi_disk *sdkp,
251 static inline void sd_zbc_print_zones(struct scsi_disk *sdkp) {}
253 static inline blk_status_t sd_zbc_setup_zone_mgmt_cmnd(struct scsi_cmnd *cmd,
257 return BLK_STS_TARGET;
260 static inline unsigned int sd_zbc_complete(struct scsi_cmnd *cmd,
261 unsigned int good_bytes, struct scsi_sense_hdr *sshdr)
266 static inline blk_status_t sd_zbc_prepare_zone_append(struct scsi_cmnd *cmd,
268 unsigned int nr_blocks)
270 return BLK_STS_TARGET;
273 #define sd_zbc_report_zones NULL
275 #endif /* CONFIG_BLK_DEV_ZONED */
277 void sd_print_sense_hdr(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr);
278 void sd_print_result(const struct scsi_disk *sdkp, const char *msg, int result);
280 #endif /* _SCSI_DISK_H */