1
2#ifndef _SCSI_DISK_H
3#define _SCSI_DISK_H
4
5
6
7
8
9
10#define SD_MAJORS 16
11
12
13
14
15#define SD_TIMEOUT (30 * HZ)
16#define SD_MOD_TIMEOUT (75 * HZ)
17
18
19
20
21#define SD_FLUSH_TIMEOUT_MULTIPLIER 2
22#define SD_WRITE_SAME_TIMEOUT (120 * HZ)
23
24
25
26
27#define SD_MAX_RETRIES 5
28#define SD_PASSTHROUGH_RETRIES 1
29#define SD_MAX_MEDIUM_TIMEOUTS 2
30
31
32
33
34#define SD_BUF_SIZE 512
35
36
37
38
39
40#define SD_LAST_BUGGY_SECTORS 8
41
42enum {
43 SD_EXT_CDB_SIZE = 32,
44 SD_MEMPOOL_SIZE = 2,
45};
46
47enum {
48 SD_DEF_XFER_BLOCKS = 0xffff,
49 SD_MAX_XFER_BLOCKS = 0xffffffff,
50 SD_MAX_WS10_BLOCKS = 0xffff,
51 SD_MAX_WS16_BLOCKS = 0x7fffff,
52};
53
54enum {
55 SD_LBP_FULL = 0,
56 SD_LBP_UNMAP,
57 SD_LBP_WS16,
58 SD_LBP_WS10,
59 SD_LBP_ZERO,
60 SD_LBP_DISABLE,
61};
62
63enum {
64 SD_ZERO_WRITE = 0,
65 SD_ZERO_WS,
66 SD_ZERO_WS16_UNMAP,
67 SD_ZERO_WS10_UNMAP,
68};
69
70struct scsi_disk {
71 struct scsi_driver *driver;
72 struct scsi_device *device;
73 struct device dev;
74 struct gendisk *disk;
75 struct opal_dev *opal_dev;
76#ifdef CONFIG_BLK_DEV_ZONED
77 u32 nr_zones;
78 u32 rev_nr_zones;
79 u32 zone_blocks;
80 u32 rev_zone_blocks;
81 u32 zones_optimal_open;
82 u32 zones_optimal_nonseq;
83 u32 zones_max_open;
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;
90#endif
91 atomic_t openers;
92 sector_t capacity;
93 int max_retries;
94 u32 max_xfer_blocks;
95 u32 opt_xfer_blocks;
96 u32 max_ws_blocks;
97 u32 max_unmap_blocks;
98 u32 unmap_granularity;
99 u32 unmap_alignment;
100 u32 index;
101 unsigned int physical_block_size;
102 unsigned int max_medium_access_timeouts;
103 unsigned int medium_access_timed_out;
104 u8 media_present;
105 u8 write_prot;
106 u8 protection_type;
107 u8 provisioning_mode;
108 u8 zeroing_mode;
109 unsigned ATO : 1;
110 unsigned cache_override : 1;
111 unsigned WCE : 1;
112 unsigned RCD : 1;
113 unsigned DPOFUA : 1;
114 unsigned first_scan : 1;
115 unsigned lbpme : 1;
116 unsigned lbprz : 1;
117 unsigned lbpu : 1;
118 unsigned lbpws : 1;
119 unsigned lbpws10 : 1;
120 unsigned lbpvpd : 1;
121 unsigned ws10 : 1;
122 unsigned ws16 : 1;
123 unsigned rc_basis: 2;
124 unsigned zoned: 2;
125 unsigned urswrz : 1;
126 unsigned security : 1;
127 unsigned ignore_medium_access_errors : 1;
128};
129#define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)
130
131static inline struct scsi_disk *scsi_disk(struct gendisk *disk)
132{
133 return container_of(disk->private_data, struct scsi_disk, driver);
134}
135
136#define sd_printk(prefix, sdsk, fmt, a...) \
137 (sdsk)->disk ? \
138 sdev_prefix_printk(prefix, (sdsk)->device, \
139 (sdsk)->disk->disk_name, fmt, ##a) : \
140 sdev_printk(prefix, (sdsk)->device, fmt, ##a)
141
142#define sd_first_printk(prefix, sdsk, fmt, a...) \
143 do { \
144 if ((sdsk)->first_scan) \
145 sd_printk(prefix, sdsk, fmt, ##a); \
146 } while (0)
147
148static 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
180static inline sector_t logical_to_sectors(struct scsi_device *sdev, sector_t blocks)
181{
182 return blocks << (ilog2(sdev->sector_size) - 9);
183}
184
185static inline unsigned int logical_to_bytes(struct scsi_device *sdev, sector_t blocks)
186{
187 return blocks * sdev->sector_size;
188}
189
190static inline sector_t bytes_to_logical(struct scsi_device *sdev, unsigned int bytes)
191{
192 return bytes >> ilog2(sdev->sector_size);
193}
194
195static inline sector_t sectors_to_logical(struct scsi_device *sdev, sector_t sector)
196{
197 return sector >> (ilog2(sdev->sector_size) - 9);
198}
199
200#ifdef CONFIG_BLK_DEV_INTEGRITY
201
202extern void sd_dif_config_host(struct scsi_disk *);
203
204#else
205
206static inline void sd_dif_config_host(struct scsi_disk *disk)
207{
208}
209
210#endif
211
212static 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
219void sd_zbc_release_disk(struct scsi_disk *sdkp);
220int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buffer);
221int sd_zbc_revalidate_zones(struct scsi_disk *sdkp);
222blk_status_t sd_zbc_setup_zone_mgmt_cmnd(struct scsi_cmnd *cmd,
223 unsigned char op, bool all);
224unsigned int sd_zbc_complete(struct scsi_cmnd *cmd, unsigned int good_bytes,
225 struct scsi_sense_hdr *sshdr);
226int sd_zbc_report_zones(struct gendisk *disk, sector_t sector,
227 unsigned int nr_zones, report_zones_cb cb, void *data);
228
229blk_status_t sd_zbc_prepare_zone_append(struct scsi_cmnd *cmd, sector_t *lba,
230 unsigned int nr_blocks);
231
232#else
233
234static inline void sd_zbc_release_disk(struct scsi_disk *sdkp) {}
235
236static inline int sd_zbc_read_zones(struct scsi_disk *sdkp,
237 unsigned char *buf)
238{
239 return 0;
240}
241
242static inline int sd_zbc_revalidate_zones(struct scsi_disk *sdkp)
243{
244 return 0;
245}
246
247static inline blk_status_t sd_zbc_setup_zone_mgmt_cmnd(struct scsi_cmnd *cmd,
248 unsigned char op,
249 bool all)
250{
251 return BLK_STS_TARGET;
252}
253
254static inline unsigned int sd_zbc_complete(struct scsi_cmnd *cmd,
255 unsigned int good_bytes, struct scsi_sense_hdr *sshdr)
256{
257 return good_bytes;
258}
259
260static 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}
266
267#define sd_zbc_report_zones NULL
268
269#endif
270
271void sd_print_sense_hdr(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr);
272void sd_print_result(const struct scsi_disk *sdkp, const char *msg, int result);
273
274#endif
275