]>
Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
e73aec82 MP |
2 | #ifndef _SCSI_DISK_H |
3 | #define _SCSI_DISK_H | |
4 | ||
5 | /* | |
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 | |
8 | * much numberspace. | |
9 | */ | |
10 | #define SD_MAJORS 16 | |
11 | ||
e73aec82 MP |
12 | /* |
13 | * Time out in seconds for disks and Magneto-opticals (which are slower). | |
14 | */ | |
15 | #define SD_TIMEOUT (30 * HZ) | |
16 | #define SD_MOD_TIMEOUT (75 * HZ) | |
7e660100 JB |
17 | /* |
18 | * Flush timeout is a multiplier over the standard device timeout which is | |
19 | * user modifiable via sysfs but initially set to SD_TIMEOUT | |
20 | */ | |
21 | #define SD_FLUSH_TIMEOUT_MULTIPLIER 2 | |
5db44863 | 22 | #define SD_WRITE_SAME_TIMEOUT (120 * HZ) |
e73aec82 MP |
23 | |
24 | /* | |
25 | * Number of allowed retries | |
26 | */ | |
27 | #define SD_MAX_RETRIES 5 | |
28 | #define SD_PASSTHROUGH_RETRIES 1 | |
18a4d0a2 | 29 | #define SD_MAX_MEDIUM_TIMEOUTS 2 |
e73aec82 MP |
30 | |
31 | /* | |
32 | * Size of the initial data buffer for mode and read capacity data | |
33 | */ | |
34 | #define SD_BUF_SIZE 512 | |
35 | ||
18351070 LT |
36 | /* |
37 | * Number of sectors at the end of the device to avoid multi-sector | |
38 | * accesses to in the case of last_sector_bug | |
39 | */ | |
40 | #define SD_LAST_BUGGY_SECTORS 8 | |
41 | ||
4e7392ec MP |
42 | enum { |
43 | SD_EXT_CDB_SIZE = 32, /* Extended CDB size */ | |
44 | SD_MEMPOOL_SIZE = 2, /* CDB pool size */ | |
45 | }; | |
46 | ||
5db44863 | 47 | enum { |
bcdb247c MP |
48 | SD_DEF_XFER_BLOCKS = 0xffff, |
49 | SD_MAX_XFER_BLOCKS = 0xffffffff, | |
5db44863 MP |
50 | SD_MAX_WS10_BLOCKS = 0xffff, |
51 | SD_MAX_WS16_BLOCKS = 0x7fffff, | |
52 | }; | |
53 | ||
c98a0eb0 MP |
54 | enum { |
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 */ | |
61 | }; | |
62 | ||
e6bd9312 MP |
63 | enum { |
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 */ | |
68 | }; | |
69 | ||
e73aec82 MP |
70 | struct scsi_disk { |
71 | struct scsi_driver *driver; /* always &sd_template */ | |
72 | struct scsi_device *device; | |
ee959b00 | 73 | struct device dev; |
e73aec82 | 74 | struct gendisk *disk; |
d80210f2 | 75 | struct opal_dev *opal_dev; |
89d94756 | 76 | #ifdef CONFIG_BLK_DEV_ZONED |
354f1132 | 77 | u32 nr_zones; |
a3d8a257 | 78 | u32 rev_nr_zones; |
354f1132 | 79 | u32 zone_blocks; |
a3d8a257 | 80 | u32 rev_zone_blocks; |
354f1132 BVA |
81 | u32 zones_optimal_open; |
82 | u32 zones_optimal_nonseq; | |
83 | u32 zones_max_open; | |
5795eb44 JT |
84 | u32 *zones_wp_offset; |
85 | spinlock_t zones_wp_offset_lock; | |
86 | u32 *rev_wp_offset; | |
87 | struct mutex rev_mutex; | |
88 | struct work_struct zone_wp_offset_work; | |
89 | char *zone_wp_update_buf; | |
89d94756 | 90 | #endif |
409f3499 | 91 | atomic_t openers; |
f08bb1e0 | 92 | sector_t capacity; /* size in logical blocks */ |
0610959f | 93 | int max_retries; |
bcdb247c | 94 | u32 max_xfer_blocks; |
ca369d51 | 95 | u32 opt_xfer_blocks; |
c98a0eb0 MP |
96 | u32 max_ws_blocks; |
97 | u32 max_unmap_blocks; | |
98 | u32 unmap_granularity; | |
99 | u32 unmap_alignment; | |
e73aec82 | 100 | u32 index; |
526f7c79 | 101 | unsigned int physical_block_size; |
18a4d0a2 MP |
102 | unsigned int max_medium_access_timeouts; |
103 | unsigned int medium_access_timed_out; | |
e73aec82 MP |
104 | u8 media_present; |
105 | u8 write_prot; | |
e0597d70 | 106 | u8 protection_type;/* Data Integrity Field */ |
c98a0eb0 | 107 | u8 provisioning_mode; |
e6bd9312 | 108 | u8 zeroing_mode; |
e0597d70 | 109 | unsigned ATO : 1; /* state of disk ATO bit */ |
39c60a09 | 110 | unsigned cache_override : 1; /* temp override of WCE,RCD */ |
e73aec82 MP |
111 | unsigned WCE : 1; /* state of disk WCE bit */ |
112 | unsigned RCD : 1; /* state of disk RCD bit, unused */ | |
113 | unsigned DPOFUA : 1; /* state of disk DPOFUA bit */ | |
70a9b873 | 114 | unsigned first_scan : 1; |
c98a0eb0 MP |
115 | unsigned lbpme : 1; |
116 | unsigned lbprz : 1; | |
117 | unsigned lbpu : 1; | |
118 | unsigned lbpws : 1; | |
119 | unsigned lbpws10 : 1; | |
120 | unsigned lbpvpd : 1; | |
66c28f97 | 121 | unsigned ws10 : 1; |
5db44863 | 122 | unsigned ws16 : 1; |
89d94756 HR |
123 | unsigned rc_basis: 2; |
124 | unsigned zoned: 2; | |
125 | unsigned urswrz : 1; | |
d80210f2 | 126 | unsigned security : 1; |
7a38dc0b | 127 | unsigned ignore_medium_access_errors : 1; |
e73aec82 | 128 | }; |
ee959b00 | 129 | #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev) |
e73aec82 | 130 | |
5b635da1 MP |
131 | static inline struct scsi_disk *scsi_disk(struct gendisk *disk) |
132 | { | |
133 | return container_of(disk->private_data, struct scsi_disk, driver); | |
134 | } | |
135 | ||
e73aec82 MP |
136 | #define sd_printk(prefix, sdsk, fmt, a...) \ |
137 | (sdsk)->disk ? \ | |
22e0d994 HR |
138 | sdev_prefix_printk(prefix, (sdsk)->device, \ |
139 | (sdsk)->disk->disk_name, fmt, ##a) : \ | |
140 | sdev_printk(prefix, (sdsk)->device, fmt, ##a) | |
e73aec82 | 141 | |
b2bff6ce MP |
142 | #define sd_first_printk(prefix, sdsk, fmt, a...) \ |
143 | do { \ | |
df46cac3 | 144 | if ((sdsk)->first_scan) \ |
b2bff6ce MP |
145 | sd_printk(prefix, sdsk, fmt, ##a); \ |
146 | } while (0) | |
147 | ||
18a4d0a2 MP |
148 | static inline int scsi_medium_access_command(struct scsi_cmnd *scmd) |
149 | { | |
150 | switch (scmd->cmnd[0]) { | |
151 | case READ_6: | |
152 | case READ_10: | |
153 | case READ_12: | |
154 | case READ_16: | |
155 | case SYNCHRONIZE_CACHE: | |
156 | case VERIFY: | |
157 | case VERIFY_12: | |
158 | case VERIFY_16: | |
159 | case WRITE_6: | |
160 | case WRITE_10: | |
161 | case WRITE_12: | |
162 | case WRITE_16: | |
163 | case WRITE_SAME: | |
164 | case WRITE_SAME_16: | |
165 | case UNMAP: | |
166 | return 1; | |
167 | case VARIABLE_LENGTH_CMD: | |
168 | switch (scmd->cmnd[9]) { | |
169 | case READ_32: | |
170 | case VERIFY_32: | |
171 | case WRITE_32: | |
172 | case WRITE_SAME_32: | |
173 | return 1; | |
174 | } | |
175 | } | |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
f08bb1e0 MP |
180 | static inline sector_t logical_to_sectors(struct scsi_device *sdev, sector_t blocks) |
181 | { | |
182 | return blocks << (ilog2(sdev->sector_size) - 9); | |
183 | } | |
184 | ||
6b7e9cde MP |
185 | static inline unsigned int logical_to_bytes(struct scsi_device *sdev, sector_t blocks) |
186 | { | |
187 | return blocks * sdev->sector_size; | |
188 | } | |
189 | ||
6eadc612 DLM |
190 | static inline sector_t bytes_to_logical(struct scsi_device *sdev, unsigned int bytes) |
191 | { | |
192 | return bytes >> ilog2(sdev->sector_size); | |
193 | } | |
194 | ||
89d94756 HR |
195 | static inline sector_t sectors_to_logical(struct scsi_device *sdev, sector_t sector) |
196 | { | |
197 | return sector >> (ilog2(sdev->sector_size) - 9); | |
198 | } | |
199 | ||
4c393e6e | 200 | #ifdef CONFIG_BLK_DEV_INTEGRITY |
af55ff67 | 201 | |
af55ff67 | 202 | extern void sd_dif_config_host(struct scsi_disk *); |
af55ff67 MP |
203 | |
204 | #else /* CONFIG_BLK_DEV_INTEGRITY */ | |
205 | ||
4c393e6e JB |
206 | static inline void sd_dif_config_host(struct scsi_disk *disk) |
207 | { | |
208 | } | |
af55ff67 MP |
209 | |
210 | #endif /* CONFIG_BLK_DEV_INTEGRITY */ | |
211 | ||
89d94756 HR |
212 | static inline int sd_is_zoned(struct scsi_disk *sdkp) |
213 | { | |
214 | return sdkp->zoned == 1 || sdkp->device->type == TYPE_ZBC; | |
215 | } | |
216 | ||
217 | #ifdef CONFIG_BLK_DEV_ZONED | |
218 | ||
5795eb44 | 219 | void sd_zbc_release_disk(struct scsi_disk *sdkp); |
a3d8a257 DLM |
220 | int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buffer); |
221 | int sd_zbc_revalidate_zones(struct scsi_disk *sdkp); | |
ad512f20 AJ |
222 | blk_status_t sd_zbc_setup_zone_mgmt_cmnd(struct scsi_cmnd *cmd, |
223 | unsigned char op, bool all); | |
5795eb44 JT |
224 | unsigned int sd_zbc_complete(struct scsi_cmnd *cmd, unsigned int good_bytes, |
225 | struct scsi_sense_hdr *sshdr); | |
d4100351 CH |
226 | int sd_zbc_report_zones(struct gendisk *disk, sector_t sector, |
227 | unsigned int nr_zones, report_zones_cb cb, void *data); | |
89d94756 | 228 | |
5795eb44 JT |
229 | blk_status_t sd_zbc_prepare_zone_append(struct scsi_cmnd *cmd, sector_t *lba, |
230 | unsigned int nr_blocks); | |
231 | ||
89d94756 HR |
232 | #else /* CONFIG_BLK_DEV_ZONED */ |
233 | ||
5795eb44 JT |
234 | static inline void sd_zbc_release_disk(struct scsi_disk *sdkp) {} |
235 | ||
89d94756 HR |
236 | static inline int sd_zbc_read_zones(struct scsi_disk *sdkp, |
237 | unsigned char *buf) | |
238 | { | |
239 | return 0; | |
240 | } | |
241 | ||
a3d8a257 DLM |
242 | static inline int sd_zbc_revalidate_zones(struct scsi_disk *sdkp) |
243 | { | |
244 | return 0; | |
245 | } | |
89d94756 | 246 | |
ad512f20 AJ |
247 | static inline blk_status_t sd_zbc_setup_zone_mgmt_cmnd(struct scsi_cmnd *cmd, |
248 | unsigned char op, | |
249 | bool all) | |
89d94756 | 250 | { |
159b2cbf | 251 | return BLK_STS_TARGET; |
89d94756 HR |
252 | } |
253 | ||
5795eb44 JT |
254 | static inline unsigned int sd_zbc_complete(struct scsi_cmnd *cmd, |
255 | unsigned int good_bytes, struct scsi_sense_hdr *sshdr) | |
256 | { | |
27ba3e8f | 257 | return good_bytes; |
5795eb44 JT |
258 | } |
259 | ||
260 | static inline blk_status_t sd_zbc_prepare_zone_append(struct scsi_cmnd *cmd, | |
261 | sector_t *lba, | |
262 | unsigned int nr_blocks) | |
263 | { | |
264 | return BLK_STS_TARGET; | |
265 | } | |
89d94756 | 266 | |
e76239a3 CH |
267 | #define sd_zbc_report_zones NULL |
268 | ||
89d94756 HR |
269 | #endif /* CONFIG_BLK_DEV_ZONED */ |
270 | ||
a35989a0 DLM |
271 | void sd_print_sense_hdr(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr); |
272 | void sd_print_result(const struct scsi_disk *sdkp, const char *msg, int result); | |
273 | ||
e73aec82 | 274 | #endif /* _SCSI_DISK_H */ |