]>
Commit | Line | Data |
---|---|---|
a4bd217b JG |
1 | /* |
2 | * Copyright (C) 2015 IT University of Copenhagen (rrpc.h) | |
3 | * Copyright (C) 2016 CNEX Labs | |
4 | * Initial release: Matias Bjorling <matias@cnexlabs.com> | |
5 | * Write buffering: Javier Gonzalez <javier@cnexlabs.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License version | |
9 | * 2 as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * Implementation of a Physical Block-device target for Open-channel SSDs. | |
17 | * | |
18 | */ | |
19 | ||
20 | #ifndef PBLK_H_ | |
21 | #define PBLK_H_ | |
22 | ||
23 | #include <linux/blkdev.h> | |
24 | #include <linux/blk-mq.h> | |
25 | #include <linux/bio.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/kthread.h> | |
28 | #include <linux/vmalloc.h> | |
29 | #include <linux/crc32.h> | |
30 | #include <linux/uuid.h> | |
31 | ||
32 | #include <linux/lightnvm.h> | |
33 | ||
34 | /* Run only GC if less than 1/X blocks are free */ | |
35 | #define GC_LIMIT_INVERSE 5 | |
36 | #define GC_TIME_MSECS 1000 | |
37 | ||
38 | #define PBLK_SECTOR (512) | |
39 | #define PBLK_EXPOSED_PAGE_SIZE (4096) | |
40 | #define PBLK_MAX_REQ_ADDRS (64) | |
41 | #define PBLK_MAX_REQ_ADDRS_PW (6) | |
42 | ||
ef576494 JG |
43 | #define PBLK_NR_CLOSE_JOBS (4) |
44 | ||
a4bd217b JG |
45 | #define PBLK_CACHE_NAME_LEN (DISK_NAME_LEN + 16) |
46 | ||
47 | #define PBLK_COMMAND_TIMEOUT_MS 30000 | |
48 | ||
49 | /* Max 512 LUNs per device */ | |
50 | #define PBLK_MAX_LUNS_BITMAP (4) | |
51 | ||
52 | #define NR_PHY_IN_LOG (PBLK_EXPOSED_PAGE_SIZE / PBLK_SECTOR) | |
53 | ||
0d880398 | 54 | /* Static pool sizes */ |
b84ae4a8 JG |
55 | #define PBLK_GEN_WS_POOL_SIZE (2) |
56 | ||
e5392739 JG |
57 | #define PBLK_DEFAULT_OP (11) |
58 | ||
e2cddf20 JG |
59 | enum { |
60 | PBLK_READ = READ, | |
61 | PBLK_WRITE = WRITE,/* Write from write buffer */ | |
62 | PBLK_WRITE_INT, /* Internal write - no write buffer */ | |
8f554597 | 63 | PBLK_READ_RECOV, /* Recovery read - errors allowed */ |
e2cddf20 JG |
64 | PBLK_ERASE, |
65 | }; | |
66 | ||
a4bd217b JG |
67 | enum { |
68 | /* IO Types */ | |
69 | PBLK_IOTYPE_USER = 1 << 0, | |
70 | PBLK_IOTYPE_GC = 1 << 1, | |
71 | ||
72 | /* Write buffer flags */ | |
73 | PBLK_FLUSH_ENTRY = 1 << 2, | |
74 | PBLK_WRITTEN_DATA = 1 << 3, | |
75 | PBLK_SUBMITTED_ENTRY = 1 << 4, | |
76 | PBLK_WRITABLE_ENTRY = 1 << 5, | |
77 | }; | |
78 | ||
79 | enum { | |
80 | PBLK_BLK_ST_OPEN = 0x1, | |
81 | PBLK_BLK_ST_CLOSED = 0x2, | |
82 | }; | |
83 | ||
b20ba1bc JG |
84 | struct pblk_sec_meta { |
85 | u64 reserved; | |
86 | __le64 lba; | |
87 | }; | |
88 | ||
a4bd217b JG |
89 | /* The number of GC lists and the rate-limiter states go together. This way the |
90 | * rate-limiter can dictate how much GC is needed based on resource utilization. | |
91 | */ | |
b20ba1bc | 92 | #define PBLK_GC_NR_LISTS 3 |
a4bd217b JG |
93 | |
94 | enum { | |
95 | PBLK_RL_HIGH = 1, | |
96 | PBLK_RL_MID = 2, | |
97 | PBLK_RL_LOW = 3, | |
98 | }; | |
99 | ||
a4bd217b | 100 | #define pblk_dma_meta_size (sizeof(struct pblk_sec_meta) * PBLK_MAX_REQ_ADDRS) |
a4809fee | 101 | #define pblk_dma_ppa_size (sizeof(u64) * PBLK_MAX_REQ_ADDRS) |
a4bd217b | 102 | |
084ec9ba | 103 | /* write buffer completion context */ |
a4bd217b JG |
104 | struct pblk_c_ctx { |
105 | struct list_head list; /* Head for out-of-order completion */ | |
106 | ||
107 | unsigned long *lun_bitmap; /* Luns used on current request */ | |
108 | unsigned int sentry; | |
109 | unsigned int nr_valid; | |
110 | unsigned int nr_padded; | |
111 | }; | |
112 | ||
a4809fee | 113 | /* read context */ |
084ec9ba JG |
114 | struct pblk_g_ctx { |
115 | void *private; | |
998ba629 | 116 | unsigned long start_time; |
a4809fee | 117 | u64 lba; |
a4bd217b JG |
118 | }; |
119 | ||
ee8d5c1a JG |
120 | /* Pad context */ |
121 | struct pblk_pad_rq { | |
122 | struct pblk *pblk; | |
123 | struct completion wait; | |
124 | struct kref ref; | |
125 | }; | |
126 | ||
a4bd217b JG |
127 | /* Recovery context */ |
128 | struct pblk_rec_ctx { | |
129 | struct pblk *pblk; | |
130 | struct nvm_rq *rqd; | |
131 | struct list_head failed; | |
132 | struct work_struct ws_rec; | |
133 | }; | |
134 | ||
135 | /* Write context */ | |
136 | struct pblk_w_ctx { | |
137 | struct bio_list bios; /* Original bios - used for completion | |
138 | * in REQ_FUA, REQ_FLUSH case | |
139 | */ | |
ef697902 | 140 | u64 lba; /* Logic addr. associated with entry */ |
a4bd217b JG |
141 | struct ppa_addr ppa; /* Physic addr. associated with entry */ |
142 | int flags; /* Write context flags */ | |
143 | }; | |
144 | ||
145 | struct pblk_rb_entry { | |
146 | struct ppa_addr cacheline; /* Cacheline for this entry */ | |
147 | void *data; /* Pointer to data on this entry */ | |
148 | struct pblk_w_ctx w_ctx; /* Context for this entry */ | |
149 | struct list_head index; /* List head to enable indexes */ | |
150 | }; | |
151 | ||
152 | #define EMPTY_ENTRY (~0U) | |
153 | ||
154 | struct pblk_rb_pages { | |
155 | struct page *pages; | |
156 | int order; | |
157 | struct list_head list; | |
158 | }; | |
159 | ||
160 | struct pblk_rb { | |
161 | struct pblk_rb_entry *entries; /* Ring buffer entries */ | |
162 | unsigned int mem; /* Write offset - points to next | |
163 | * writable entry in memory | |
164 | */ | |
165 | unsigned int subm; /* Read offset - points to last entry | |
166 | * that has been submitted to the media | |
167 | * to be persisted | |
168 | */ | |
169 | unsigned int sync; /* Synced - backpointer that signals | |
170 | * the last submitted entry that has | |
171 | * been successfully persisted to media | |
172 | */ | |
8154d296 | 173 | unsigned int flush_point; /* Sync point - last entry that must be |
a4bd217b JG |
174 | * flushed to the media. Used with |
175 | * REQ_FLUSH and REQ_FUA | |
176 | */ | |
177 | unsigned int l2p_update; /* l2p update point - next entry for | |
178 | * which l2p mapping will be updated to | |
179 | * contain a device ppa address (instead | |
180 | * of a cacheline | |
181 | */ | |
182 | unsigned int nr_entries; /* Number of entries in write buffer - | |
183 | * must be a power of two | |
184 | */ | |
185 | unsigned int seg_size; /* Size of the data segments being | |
186 | * stored on each entry. Typically this | |
187 | * will be 4KB | |
188 | */ | |
189 | ||
190 | struct list_head pages; /* List of data pages */ | |
191 | ||
192 | spinlock_t w_lock; /* Write lock */ | |
193 | spinlock_t s_lock; /* Sync lock */ | |
194 | ||
195 | #ifdef CONFIG_NVM_DEBUG | |
8154d296 | 196 | atomic_t inflight_flush_point; /* Not served REQ_FLUSH | REQ_FUA */ |
a4bd217b JG |
197 | #endif |
198 | }; | |
199 | ||
200 | #define PBLK_RECOVERY_SECTORS 16 | |
201 | ||
202 | struct pblk_lun { | |
203 | struct ppa_addr bppa; | |
a4bd217b JG |
204 | struct semaphore wr_sem; |
205 | }; | |
206 | ||
207 | struct pblk_gc_rq { | |
208 | struct pblk_line *line; | |
209 | void *data; | |
d340121e | 210 | u64 paddr_list[PBLK_MAX_REQ_ADDRS]; |
b20ba1bc | 211 | u64 lba_list[PBLK_MAX_REQ_ADDRS]; |
a4bd217b JG |
212 | int nr_secs; |
213 | int secs_to_gc; | |
214 | struct list_head list; | |
215 | }; | |
216 | ||
217 | struct pblk_gc { | |
b20ba1bc JG |
218 | /* These states are not protected by a lock since (i) they are in the |
219 | * fast path, and (ii) they are not critical. | |
220 | */ | |
a4bd217b JG |
221 | int gc_active; |
222 | int gc_enabled; | |
223 | int gc_forced; | |
a4bd217b JG |
224 | |
225 | struct task_struct *gc_ts; | |
226 | struct task_struct *gc_writer_ts; | |
b20ba1bc JG |
227 | struct task_struct *gc_reader_ts; |
228 | ||
229 | struct workqueue_struct *gc_line_reader_wq; | |
a4bd217b | 230 | struct workqueue_struct *gc_reader_wq; |
b20ba1bc | 231 | |
a4bd217b JG |
232 | struct timer_list gc_timer; |
233 | ||
b20ba1bc | 234 | struct semaphore gc_sem; |
d6b992f7 HH |
235 | atomic_t read_inflight_gc; /* Number of lines with inflight GC reads */ |
236 | atomic_t pipeline_gc; /* Number of lines in the GC pipeline - | |
237 | * started reads to finished writes | |
238 | */ | |
a4bd217b | 239 | int w_entries; |
b20ba1bc | 240 | |
a4bd217b | 241 | struct list_head w_list; |
b20ba1bc | 242 | struct list_head r_list; |
a4bd217b JG |
243 | |
244 | spinlock_t lock; | |
245 | spinlock_t w_lock; | |
b20ba1bc | 246 | spinlock_t r_lock; |
a4bd217b JG |
247 | }; |
248 | ||
249 | struct pblk_rl { | |
250 | unsigned int high; /* Upper threshold for rate limiter (free run - | |
251 | * user I/O rate limiter | |
252 | */ | |
a4bd217b JG |
253 | unsigned int high_pw; /* High rounded up as a power of 2 */ |
254 | ||
b20ba1bc JG |
255 | #define PBLK_USER_HIGH_THRS 8 /* Begin write limit at 12% available blks */ |
256 | #define PBLK_USER_LOW_THRS 10 /* Aggressive GC at 10% available blocks */ | |
a4bd217b JG |
257 | |
258 | int rb_windows_pw; /* Number of rate windows in the write buffer | |
259 | * given as a power-of-2. This guarantees that | |
260 | * when user I/O is being rate limited, there | |
261 | * will be reserved enough space for the GC to | |
262 | * place its payload. A window is of | |
263 | * pblk->max_write_pgs size, which in NVMe is | |
264 | * 64, i.e., 256kb. | |
265 | */ | |
266 | int rb_budget; /* Total number of entries available for I/O */ | |
267 | int rb_user_max; /* Max buffer entries available for user I/O */ | |
a4bd217b JG |
268 | int rb_gc_max; /* Max buffer entries available for GC I/O */ |
269 | int rb_gc_rsv; /* Reserved buffer entries for GC I/O */ | |
270 | int rb_state; /* Rate-limiter current state */ | |
da67e68f | 271 | int rb_max_io; /* Maximum size for an I/O giving the config */ |
588726d3 JG |
272 | |
273 | atomic_t rb_user_cnt; /* User I/O buffer counter */ | |
a4bd217b | 274 | atomic_t rb_gc_cnt; /* GC I/O buffer counter */ |
588726d3 | 275 | atomic_t rb_space; /* Space limit in case of reaching capacity */ |
a4bd217b | 276 | |
b20ba1bc JG |
277 | int rsv_blocks; /* Reserved blocks for GC */ |
278 | ||
a4bd217b | 279 | int rb_user_active; |
b20ba1bc JG |
280 | int rb_gc_active; |
281 | ||
a4bd217b JG |
282 | struct timer_list u_timer; |
283 | ||
284 | unsigned long long nr_secs; | |
285 | unsigned long total_blocks; | |
a7689938 JG |
286 | |
287 | atomic_t free_blocks; /* Total number of free blocks (+ OP) */ | |
288 | atomic_t free_user_blocks; /* Number of user free blocks (no OP) */ | |
a4bd217b JG |
289 | }; |
290 | ||
a4bd217b JG |
291 | #define PBLK_LINE_EMPTY (~0U) |
292 | ||
293 | enum { | |
294 | /* Line Types */ | |
295 | PBLK_LINETYPE_FREE = 0, | |
296 | PBLK_LINETYPE_LOG = 1, | |
297 | PBLK_LINETYPE_DATA = 2, | |
298 | ||
299 | /* Line state */ | |
32ef9412 | 300 | PBLK_LINESTATE_NEW = 9, |
a4bd217b JG |
301 | PBLK_LINESTATE_FREE = 10, |
302 | PBLK_LINESTATE_OPEN = 11, | |
303 | PBLK_LINESTATE_CLOSED = 12, | |
304 | PBLK_LINESTATE_GC = 13, | |
305 | PBLK_LINESTATE_BAD = 14, | |
306 | PBLK_LINESTATE_CORRUPT = 15, | |
307 | ||
308 | /* GC group */ | |
309 | PBLK_LINEGC_NONE = 20, | |
310 | PBLK_LINEGC_EMPTY = 21, | |
311 | PBLK_LINEGC_LOW = 22, | |
312 | PBLK_LINEGC_MID = 23, | |
313 | PBLK_LINEGC_HIGH = 24, | |
314 | PBLK_LINEGC_FULL = 25, | |
315 | }; | |
316 | ||
317 | #define PBLK_MAGIC 0x70626c6b /*pblk*/ | |
d0ab0b1a HH |
318 | |
319 | /* emeta/smeta persistent storage format versions: | |
320 | * Changes in major version requires offline migration. | |
321 | * Changes in minor version are handled automatically during | |
322 | * recovery. | |
323 | */ | |
324 | ||
325 | #define SMETA_VERSION_MAJOR (0) | |
326 | #define SMETA_VERSION_MINOR (1) | |
327 | ||
328 | #define EMETA_VERSION_MAJOR (0) | |
76758390 | 329 | #define EMETA_VERSION_MINOR (2) |
a4bd217b JG |
330 | |
331 | struct line_header { | |
332 | __le32 crc; | |
333 | __le32 identifier; /* pblk identifier */ | |
334 | __u8 uuid[16]; /* instance uuid */ | |
335 | __le16 type; /* line type */ | |
d0ab0b1a HH |
336 | __u8 version_major; /* version major */ |
337 | __u8 version_minor; /* version minor */ | |
a4bd217b JG |
338 | __le32 id; /* line id for current line */ |
339 | }; | |
340 | ||
341 | struct line_smeta { | |
342 | struct line_header header; | |
343 | ||
344 | __le32 crc; /* Full structure including struct crc */ | |
345 | /* Previous line metadata */ | |
346 | __le32 prev_id; /* Line id for previous line */ | |
347 | ||
348 | /* Current line metadata */ | |
349 | __le64 seq_nr; /* Sequence number for current line */ | |
350 | ||
351 | /* Active writers */ | |
352 | __le32 window_wr_lun; /* Number of parallel LUNs to write */ | |
353 | ||
354 | __le32 rsvd[2]; | |
dd2a4343 JG |
355 | |
356 | __le64 lun_bitmap[]; | |
a4bd217b JG |
357 | }; |
358 | ||
76758390 | 359 | |
a4bd217b | 360 | /* |
dd2a4343 JG |
361 | * Metadata layout in media: |
362 | * First sector: | |
363 | * 1. struct line_emeta | |
364 | * 2. bad block bitmap (u64 * window_wr_lun) | |
76758390 | 365 | * 3. write amplification counters |
dd2a4343 JG |
366 | * Mid sectors (start at lbas_sector): |
367 | * 3. nr_lbas (u64) forming lba list | |
368 | * Last sectors (start at vsc_sector): | |
369 | * 4. u32 valid sector count (vsc) for all lines (~0U: free line) | |
a4bd217b JG |
370 | */ |
371 | struct line_emeta { | |
372 | struct line_header header; | |
373 | ||
374 | __le32 crc; /* Full structure including struct crc */ | |
375 | ||
376 | /* Previous line metadata */ | |
377 | __le32 prev_id; /* Line id for prev line */ | |
378 | ||
379 | /* Current line metadata */ | |
380 | __le64 seq_nr; /* Sequence number for current line */ | |
381 | ||
382 | /* Active writers */ | |
383 | __le32 window_wr_lun; /* Number of parallel LUNs to write */ | |
384 | ||
385 | /* Bookkeeping for recovery */ | |
386 | __le32 next_id; /* Line id for next line */ | |
387 | __le64 nr_lbas; /* Number of lbas mapped in line */ | |
388 | __le64 nr_valid_lbas; /* Number of valid lbas mapped in line */ | |
76758390 HH |
389 | __le64 bb_bitmap[]; /* Updated bad block bitmap for line */ |
390 | }; | |
391 | ||
392 | ||
393 | /* Write amplification counters stored on media */ | |
394 | struct wa_counters { | |
395 | __le64 user; /* Number of user written sectors */ | |
396 | __le64 gc; /* Number of sectors written by GC*/ | |
397 | __le64 pad; /* Number of padded sectors */ | |
dd2a4343 JG |
398 | }; |
399 | ||
400 | struct pblk_emeta { | |
401 | struct line_emeta *buf; /* emeta buffer in media format */ | |
402 | int mem; /* Write offset - points to next | |
403 | * writable entry in memory | |
404 | */ | |
405 | atomic_t sync; /* Synced - backpointer that signals the | |
406 | * last entry that has been successfully | |
407 | * persisted to media | |
408 | */ | |
409 | unsigned int nr_entries; /* Number of emeta entries */ | |
410 | }; | |
411 | ||
412 | struct pblk_smeta { | |
413 | struct line_smeta *buf; /* smeta buffer in persistent format */ | |
a4bd217b JG |
414 | }; |
415 | ||
416 | struct pblk_line { | |
417 | struct pblk *pblk; | |
418 | unsigned int id; /* Line number corresponds to the | |
419 | * block line | |
420 | */ | |
421 | unsigned int seq_nr; /* Unique line sequence number */ | |
422 | ||
423 | int state; /* PBLK_LINESTATE_X */ | |
424 | int type; /* PBLK_LINETYPE_X */ | |
425 | int gc_group; /* PBLK_LINEGC_X */ | |
426 | struct list_head list; /* Free, GC lists */ | |
427 | ||
428 | unsigned long *lun_bitmap; /* Bitmap for LUNs mapped in line */ | |
429 | ||
32ef9412 JG |
430 | struct nvm_chk_meta *chks; /* Chunks forming line */ |
431 | ||
dd2a4343 JG |
432 | struct pblk_smeta *smeta; /* Start metadata */ |
433 | struct pblk_emeta *emeta; /* End medatada */ | |
434 | ||
a4bd217b | 435 | int meta_line; /* Metadata line id */ |
dd2a4343 JG |
436 | int meta_distance; /* Distance between data and metadata */ |
437 | ||
a4bd217b JG |
438 | u64 smeta_ssec; /* Sector where smeta starts */ |
439 | u64 emeta_ssec; /* Sector where emeta starts */ | |
440 | ||
441 | unsigned int sec_in_line; /* Number of usable secs in line */ | |
442 | ||
a44f53fa | 443 | atomic_t blk_in_line; /* Number of good blocks in line */ |
a4bd217b JG |
444 | unsigned long *blk_bitmap; /* Bitmap for valid/invalid blocks */ |
445 | unsigned long *erase_bitmap; /* Bitmap for erased blocks */ | |
446 | ||
447 | unsigned long *map_bitmap; /* Bitmap for mapped sectors in line */ | |
448 | unsigned long *invalid_bitmap; /* Bitmap for invalid sectors in line */ | |
449 | ||
a44f53fa | 450 | atomic_t left_eblks; /* Blocks left for erasing */ |
a4bd217b JG |
451 | atomic_t left_seblks; /* Blocks left for sync erasing */ |
452 | ||
453 | int left_msecs; /* Sectors left for mapping */ | |
a4bd217b | 454 | unsigned int cur_sec; /* Sector map pointer */ |
dd2a4343 JG |
455 | unsigned int nr_valid_lbas; /* Number of valid lbas in line */ |
456 | ||
457 | __le32 *vsc; /* Valid sector count in line */ | |
a4bd217b JG |
458 | |
459 | struct kref ref; /* Write buffer L2P references */ | |
460 | ||
461 | spinlock_t lock; /* Necessary for invalid_bitmap only */ | |
462 | }; | |
463 | ||
a44f53fa | 464 | #define PBLK_DATA_LINES 4 |
a4bd217b | 465 | |
dd2a4343 | 466 | enum { |
a4bd217b JG |
467 | PBLK_KMALLOC_META = 1, |
468 | PBLK_VMALLOC_META = 2, | |
469 | }; | |
470 | ||
dd2a4343 JG |
471 | enum { |
472 | PBLK_EMETA_TYPE_HEADER = 1, /* struct line_emeta first sector */ | |
473 | PBLK_EMETA_TYPE_LLBA = 2, /* lba list - type: __le64 */ | |
474 | PBLK_EMETA_TYPE_VSC = 3, /* vsc list - type: __le32 */ | |
a4bd217b JG |
475 | }; |
476 | ||
477 | struct pblk_line_mgmt { | |
478 | int nr_lines; /* Total number of full lines */ | |
479 | int nr_free_lines; /* Number of full lines in free list */ | |
480 | ||
481 | /* Free lists - use free_lock */ | |
482 | struct list_head free_list; /* Full lines ready to use */ | |
483 | struct list_head corrupt_list; /* Full lines corrupted */ | |
484 | struct list_head bad_list; /* Full lines bad */ | |
485 | ||
486 | /* GC lists - use gc_lock */ | |
b20ba1bc | 487 | struct list_head *gc_lists[PBLK_GC_NR_LISTS]; |
a4bd217b JG |
488 | struct list_head gc_high_list; /* Full lines ready to GC, high isc */ |
489 | struct list_head gc_mid_list; /* Full lines ready to GC, mid isc */ | |
490 | struct list_head gc_low_list; /* Full lines ready to GC, low isc */ | |
491 | ||
492 | struct list_head gc_full_list; /* Full lines ready to GC, no valid */ | |
493 | struct list_head gc_empty_list; /* Full lines close, all valid */ | |
494 | ||
495 | struct pblk_line *log_line; /* Current FTL log line */ | |
496 | struct pblk_line *data_line; /* Current data line */ | |
497 | struct pblk_line *log_next; /* Next FTL log line */ | |
498 | struct pblk_line *data_next; /* Next data line */ | |
499 | ||
dd2a4343 JG |
500 | struct list_head emeta_list; /* Lines queued to schedule emeta */ |
501 | ||
502 | __le32 *vsc_list; /* Valid sector counts for all lines */ | |
503 | ||
a4bd217b | 504 | /* Metadata allocation type: VMALLOC | KMALLOC */ |
a4bd217b JG |
505 | int emeta_alloc_type; |
506 | ||
507 | /* Pre-allocated metadata for data lines */ | |
dd2a4343 JG |
508 | struct pblk_smeta *sline_meta[PBLK_DATA_LINES]; |
509 | struct pblk_emeta *eline_meta[PBLK_DATA_LINES]; | |
a4bd217b JG |
510 | unsigned long meta_bitmap; |
511 | ||
512 | /* Helpers for fast bitmap calculations */ | |
513 | unsigned long *bb_template; | |
514 | unsigned long *bb_aux; | |
515 | ||
516 | unsigned long d_seq_nr; /* Data line unique sequence number */ | |
517 | unsigned long l_seq_nr; /* Log line unique sequence number */ | |
518 | ||
519 | spinlock_t free_lock; | |
dd2a4343 | 520 | spinlock_t close_lock; |
a4bd217b JG |
521 | spinlock_t gc_lock; |
522 | }; | |
523 | ||
524 | struct pblk_line_meta { | |
525 | unsigned int smeta_len; /* Total length for smeta */ | |
dd2a4343 JG |
526 | unsigned int smeta_sec; /* Sectors needed for smeta */ |
527 | ||
528 | unsigned int emeta_len[4]; /* Lengths for emeta: | |
76758390 HH |
529 | * [0]: Total |
530 | * [1]: struct line_emeta + | |
531 | * bb_bitmap + struct wa_counters | |
532 | * [2]: L2P portion | |
533 | * [3]: vsc | |
dd2a4343 JG |
534 | */ |
535 | unsigned int emeta_sec[4]; /* Sectors needed for emeta. Same layout | |
536 | * as emeta_len | |
537 | */ | |
538 | ||
a4bd217b | 539 | unsigned int emeta_bb; /* Boundary for bb that affects emeta */ |
dd2a4343 JG |
540 | |
541 | unsigned int vsc_list_len; /* Length for vsc list */ | |
a4bd217b JG |
542 | unsigned int sec_bitmap_len; /* Length for sector bitmap in line */ |
543 | unsigned int blk_bitmap_len; /* Length for block bitmap in line */ | |
544 | unsigned int lun_bitmap_len; /* Length for lun bitmap in line */ | |
545 | ||
546 | unsigned int blk_per_line; /* Number of blocks in a full line */ | |
547 | unsigned int sec_per_line; /* Number of sectors in a line */ | |
dd2a4343 | 548 | unsigned int dsec_per_line; /* Number of data sectors in a line */ |
a4bd217b JG |
549 | unsigned int min_blk_line; /* Min. number of good blocks in line */ |
550 | ||
551 | unsigned int mid_thrs; /* Threshold for GC mid list */ | |
552 | unsigned int high_thrs; /* Threshold for GC high list */ | |
dd2a4343 JG |
553 | |
554 | unsigned int meta_distance; /* Distance between data and metadata */ | |
a4bd217b JG |
555 | }; |
556 | ||
588726d3 JG |
557 | enum { |
558 | PBLK_STATE_RUNNING = 0, | |
559 | PBLK_STATE_STOPPING = 1, | |
560 | PBLK_STATE_RECOVERING = 2, | |
561 | PBLK_STATE_STOPPED = 3, | |
562 | }; | |
563 | ||
3b2a3ad1 JG |
564 | /* Internal format to support not power-of-2 device formats */ |
565 | struct pblk_addrf { | |
566 | /* gen to dev */ | |
567 | int sec_stripe; | |
568 | int ch_stripe; | |
569 | int lun_stripe; | |
570 | ||
571 | /* dev to gen */ | |
572 | int sec_lun_stripe; | |
573 | int sec_ws_stripe; | |
574 | }; | |
575 | ||
a4bd217b JG |
576 | struct pblk { |
577 | struct nvm_tgt_dev *dev; | |
578 | struct gendisk *disk; | |
579 | ||
580 | struct kobject kobj; | |
581 | ||
582 | struct pblk_lun *luns; | |
583 | ||
584 | struct pblk_line *lines; /* Line array */ | |
585 | struct pblk_line_mgmt l_mg; /* Line management */ | |
586 | struct pblk_line_meta lm; /* Line metadata */ | |
587 | ||
3b2a3ad1 JG |
588 | struct nvm_addrf addrf; /* Aligned address format */ |
589 | struct pblk_addrf uaddrf; /* Unaligned address format */ | |
bb845ae4 | 590 | int addrf_len; |
a4bd217b JG |
591 | |
592 | struct pblk_rb rwb; | |
593 | ||
588726d3 JG |
594 | int state; /* pblk line state */ |
595 | ||
a4bd217b JG |
596 | int min_write_pgs; /* Minimum amount of pages required by controller */ |
597 | int max_write_pgs; /* Maximum amount of pages supported by controller */ | |
598 | int pgs_in_buffer; /* Number of pages that need to be held in buffer to | |
599 | * guarantee successful reads. | |
600 | */ | |
601 | ||
602 | sector_t capacity; /* Device capacity when bad blocks are subtracted */ | |
a7689938 JG |
603 | |
604 | int op; /* Percentage of device used for over-provisioning */ | |
605 | int op_blks; /* Number of blocks used for over-provisioning */ | |
a4bd217b JG |
606 | |
607 | /* pblk provisioning values. Used by rate limiter */ | |
608 | struct pblk_rl rl; | |
609 | ||
c2e9f5d4 | 610 | int sec_per_write; |
a4bd217b JG |
611 | |
612 | unsigned char instance_uuid[16]; | |
76758390 HH |
613 | |
614 | /* Persistent write amplification counters, 4kb sector I/Os */ | |
615 | atomic64_t user_wa; /* Sectors written by user */ | |
616 | atomic64_t gc_wa; /* Sectors written by GC */ | |
617 | atomic64_t pad_wa; /* Padded sectors written */ | |
618 | ||
619 | /* Reset values for delta write amplification measurements */ | |
620 | u64 user_rst_wa; | |
621 | u64 gc_rst_wa; | |
622 | u64 pad_rst_wa; | |
623 | ||
5d149bfa HH |
624 | /* Counters used for calculating padding distribution */ |
625 | atomic64_t *pad_dist; /* Padding distribution buckets */ | |
626 | u64 nr_flush_rst; /* Flushes reset value for pad dist.*/ | |
627 | atomic64_t nr_flush; /* Number of flush/fua I/O */ | |
628 | ||
a4bd217b | 629 | #ifdef CONFIG_NVM_DEBUG |
76758390 | 630 | /* Non-persistent debug counters, 4kb sector I/Os */ |
a4bd217b JG |
631 | atomic_long_t inflight_writes; /* Inflight writes (user and gc) */ |
632 | atomic_long_t padded_writes; /* Sectors padded due to flush/fua */ | |
633 | atomic_long_t padded_wb; /* Sectors padded in write buffer */ | |
a4bd217b JG |
634 | atomic_long_t req_writes; /* Sectors stored on write buffer */ |
635 | atomic_long_t sub_writes; /* Sectors submitted from buffer */ | |
636 | atomic_long_t sync_writes; /* Sectors synced to media */ | |
a4bd217b | 637 | atomic_long_t inflight_reads; /* Inflight sector read requests */ |
db7ada33 | 638 | atomic_long_t cache_reads; /* Read requests that hit the cache */ |
a4bd217b JG |
639 | atomic_long_t sync_reads; /* Completed sector read requests */ |
640 | atomic_long_t recov_writes; /* Sectors submitted from recovery */ | |
641 | atomic_long_t recov_gc_writes; /* Sectors submitted from write GC */ | |
642 | atomic_long_t recov_gc_reads; /* Sectors submitted from read GC */ | |
643 | #endif | |
644 | ||
645 | spinlock_t lock; | |
646 | ||
647 | atomic_long_t read_failed; | |
648 | atomic_long_t read_empty; | |
649 | atomic_long_t read_high_ecc; | |
650 | atomic_long_t read_failed_gc; | |
651 | atomic_long_t write_failed; | |
652 | atomic_long_t erase_failed; | |
653 | ||
588726d3 JG |
654 | atomic_t inflight_io; /* General inflight I/O counter */ |
655 | ||
a4bd217b JG |
656 | struct task_struct *writer_ts; |
657 | ||
658 | /* Simple translation map of logical addresses to physical addresses. | |
659 | * The logical addresses is known by the host system, while the physical | |
660 | * addresses are used when writing to the disk block device. | |
661 | */ | |
662 | unsigned char *trans_map; | |
663 | spinlock_t trans_lock; | |
664 | ||
665 | struct list_head compl_list; | |
666 | ||
b906bbb6 KO |
667 | mempool_t page_bio_pool; |
668 | mempool_t gen_ws_pool; | |
669 | mempool_t rec_pool; | |
670 | mempool_t r_rq_pool; | |
671 | mempool_t w_rq_pool; | |
672 | mempool_t e_rq_pool; | |
a4bd217b | 673 | |
ef576494 JG |
674 | struct workqueue_struct *close_wq; |
675 | struct workqueue_struct *bb_wq; | |
7bd4d370 | 676 | struct workqueue_struct *r_end_wq; |
ef576494 | 677 | |
a4bd217b JG |
678 | struct timer_list wtimer; |
679 | ||
680 | struct pblk_gc gc; | |
681 | }; | |
682 | ||
683 | struct pblk_line_ws { | |
684 | struct pblk *pblk; | |
685 | struct pblk_line *line; | |
686 | void *priv; | |
687 | struct work_struct ws; | |
688 | }; | |
689 | ||
084ec9ba | 690 | #define pblk_g_rq_size (sizeof(struct nvm_rq) + sizeof(struct pblk_g_ctx)) |
a4bd217b JG |
691 | #define pblk_w_rq_size (sizeof(struct nvm_rq) + sizeof(struct pblk_c_ctx)) |
692 | ||
693 | /* | |
694 | * pblk ring buffer operations | |
695 | */ | |
696 | int pblk_rb_init(struct pblk_rb *rb, struct pblk_rb_entry *rb_entry_base, | |
697 | unsigned int power_size, unsigned int power_seg_sz); | |
698 | unsigned int pblk_rb_calculate_size(unsigned int nr_entries); | |
699 | void *pblk_rb_entries_ref(struct pblk_rb *rb); | |
700 | int pblk_rb_may_write_user(struct pblk_rb *rb, struct bio *bio, | |
701 | unsigned int nr_entries, unsigned int *pos); | |
702 | int pblk_rb_may_write_gc(struct pblk_rb *rb, unsigned int nr_entries, | |
703 | unsigned int *pos); | |
704 | void pblk_rb_write_entry_user(struct pblk_rb *rb, void *data, | |
705 | struct pblk_w_ctx w_ctx, unsigned int pos); | |
706 | void pblk_rb_write_entry_gc(struct pblk_rb *rb, void *data, | |
d340121e JG |
707 | struct pblk_w_ctx w_ctx, struct pblk_line *line, |
708 | u64 paddr, unsigned int pos); | |
a4bd217b | 709 | struct pblk_w_ctx *pblk_rb_w_ctx(struct pblk_rb *rb, unsigned int pos); |
588726d3 | 710 | void pblk_rb_flush(struct pblk_rb *rb); |
a4bd217b JG |
711 | |
712 | void pblk_rb_sync_l2p(struct pblk_rb *rb); | |
d624f371 | 713 | unsigned int pblk_rb_read_to_bio(struct pblk_rb *rb, struct nvm_rq *rqd, |
875d94f3 JG |
714 | unsigned int pos, unsigned int nr_entries, |
715 | unsigned int count); | |
a4bd217b JG |
716 | unsigned int pblk_rb_read_to_bio_list(struct pblk_rb *rb, struct bio *bio, |
717 | struct list_head *list, | |
718 | unsigned int max); | |
719 | int pblk_rb_copy_to_bio(struct pblk_rb *rb, struct bio *bio, sector_t lba, | |
75cb8e93 | 720 | struct ppa_addr ppa, int bio_iter, bool advanced_bio); |
a4bd217b JG |
721 | unsigned int pblk_rb_read_commit(struct pblk_rb *rb, unsigned int entries); |
722 | ||
723 | unsigned int pblk_rb_sync_init(struct pblk_rb *rb, unsigned long *flags); | |
724 | unsigned int pblk_rb_sync_advance(struct pblk_rb *rb, unsigned int nr_entries); | |
725 | struct pblk_rb_entry *pblk_rb_sync_scan_entry(struct pblk_rb *rb, | |
726 | struct ppa_addr *ppa); | |
727 | void pblk_rb_sync_end(struct pblk_rb *rb, unsigned long *flags); | |
8154d296 | 728 | unsigned int pblk_rb_flush_point_count(struct pblk_rb *rb); |
a4bd217b JG |
729 | |
730 | unsigned int pblk_rb_read_count(struct pblk_rb *rb); | |
ee8d5c1a | 731 | unsigned int pblk_rb_sync_count(struct pblk_rb *rb); |
a4bd217b JG |
732 | unsigned int pblk_rb_wrap_pos(struct pblk_rb *rb, unsigned int pos); |
733 | ||
734 | int pblk_rb_tear_down_check(struct pblk_rb *rb); | |
735 | int pblk_rb_pos_oob(struct pblk_rb *rb, u64 pos); | |
736 | void pblk_rb_data_free(struct pblk_rb *rb); | |
737 | ssize_t pblk_rb_sysfs(struct pblk_rb *rb, char *buf); | |
738 | ||
739 | /* | |
740 | * pblk core | |
741 | */ | |
67bf26a3 JG |
742 | struct nvm_rq *pblk_alloc_rqd(struct pblk *pblk, int type); |
743 | void pblk_free_rqd(struct pblk *pblk, struct nvm_rq *rqd, int type); | |
c2e9f5d4 | 744 | void pblk_set_sec_per_write(struct pblk *pblk, int sec_per_write); |
a4bd217b JG |
745 | int pblk_setup_w_rec_rq(struct pblk *pblk, struct nvm_rq *rqd, |
746 | struct pblk_c_ctx *c_ctx); | |
a4bd217b | 747 | void pblk_discard(struct pblk *pblk, struct bio *bio); |
32ef9412 JG |
748 | struct nvm_chk_meta *pblk_chunk_get_info(struct pblk *pblk); |
749 | struct nvm_chk_meta *pblk_chunk_get_off(struct pblk *pblk, | |
750 | struct nvm_chk_meta *lp, | |
751 | struct ppa_addr ppa); | |
a4bd217b JG |
752 | void pblk_log_write_err(struct pblk *pblk, struct nvm_rq *rqd); |
753 | void pblk_log_read_err(struct pblk *pblk, struct nvm_rq *rqd); | |
754 | int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd); | |
1a94b2d4 | 755 | int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd); |
dd2a4343 | 756 | int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line); |
a4bd217b JG |
757 | struct bio *pblk_bio_map_addr(struct pblk *pblk, void *data, |
758 | unsigned int nr_secs, unsigned int len, | |
de54e703 | 759 | int alloc_type, gfp_t gfp_mask); |
a4bd217b JG |
760 | struct pblk_line *pblk_line_get(struct pblk *pblk); |
761 | struct pblk_line *pblk_line_get_first_data(struct pblk *pblk); | |
21d22871 | 762 | struct pblk_line *pblk_line_replace_data(struct pblk *pblk); |
a4bd217b JG |
763 | int pblk_line_recov_alloc(struct pblk *pblk, struct pblk_line *line); |
764 | void pblk_line_recov_close(struct pblk *pblk, struct pblk_line *line); | |
765 | struct pblk_line *pblk_line_get_data(struct pblk *pblk); | |
d624f371 | 766 | struct pblk_line *pblk_line_get_erase(struct pblk *pblk); |
a4bd217b JG |
767 | int pblk_line_erase(struct pblk *pblk, struct pblk_line *line); |
768 | int pblk_line_is_full(struct pblk_line *line); | |
8e55c07b | 769 | void pblk_line_free(struct pblk_line *line); |
dd2a4343 | 770 | void pblk_line_close_meta(struct pblk *pblk, struct pblk_line *line); |
a4bd217b | 771 | void pblk_line_close(struct pblk *pblk, struct pblk_line *line); |
dd2a4343 | 772 | void pblk_line_close_ws(struct work_struct *work); |
588726d3 | 773 | void pblk_pipeline_stop(struct pblk *pblk); |
a7c9e910 JG |
774 | void __pblk_pipeline_stop(struct pblk *pblk); |
775 | void __pblk_pipeline_flush(struct pblk *pblk); | |
b84ae4a8 JG |
776 | void pblk_gen_run_ws(struct pblk *pblk, struct pblk_line *line, void *priv, |
777 | void (*work)(struct work_struct *), gfp_t gfp_mask, | |
778 | struct workqueue_struct *wq); | |
a4bd217b JG |
779 | u64 pblk_line_smeta_start(struct pblk *pblk, struct pblk_line *line); |
780 | int pblk_line_read_smeta(struct pblk *pblk, struct pblk_line *line); | |
dd2a4343 JG |
781 | int pblk_line_read_emeta(struct pblk *pblk, struct pblk_line *line, |
782 | void *emeta_buf); | |
a4bd217b JG |
783 | int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr erase_ppa); |
784 | void pblk_line_put(struct kref *ref); | |
7bd4d370 | 785 | void pblk_line_put_wq(struct kref *ref); |
a4bd217b | 786 | struct list_head *pblk_line_gc_list(struct pblk *pblk, struct pblk_line *line); |
dd2a4343 JG |
787 | u64 pblk_lookup_page(struct pblk *pblk, struct pblk_line *line); |
788 | void pblk_dealloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs); | |
a4bd217b | 789 | u64 pblk_alloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs); |
dd2a4343 | 790 | u64 __pblk_alloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs); |
a4bd217b JG |
791 | int pblk_calc_secs(struct pblk *pblk, unsigned long secs_avail, |
792 | unsigned long secs_to_flush); | |
3eaa11e2 | 793 | void pblk_up_page(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas); |
a4bd217b JG |
794 | void pblk_down_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas, |
795 | unsigned long *lun_bitmap); | |
3eaa11e2 | 796 | void pblk_down_page(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas); |
a4bd217b JG |
797 | void pblk_up_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas, |
798 | unsigned long *lun_bitmap); | |
a4bd217b JG |
799 | int pblk_bio_add_pages(struct pblk *pblk, struct bio *bio, gfp_t flags, |
800 | int nr_pages); | |
a4bd217b JG |
801 | void pblk_bio_free_pages(struct pblk *pblk, struct bio *bio, int off, |
802 | int nr_pages); | |
803 | void pblk_map_invalidate(struct pblk *pblk, struct ppa_addr ppa); | |
0880a9aa JG |
804 | void __pblk_map_invalidate(struct pblk *pblk, struct pblk_line *line, |
805 | u64 paddr); | |
a4bd217b JG |
806 | void pblk_update_map(struct pblk *pblk, sector_t lba, struct ppa_addr ppa); |
807 | void pblk_update_map_cache(struct pblk *pblk, sector_t lba, | |
808 | struct ppa_addr ppa); | |
809 | void pblk_update_map_dev(struct pblk *pblk, sector_t lba, | |
810 | struct ppa_addr ppa, struct ppa_addr entry_line); | |
811 | int pblk_update_map_gc(struct pblk *pblk, sector_t lba, struct ppa_addr ppa, | |
d340121e | 812 | struct pblk_line *gc_line, u64 paddr); |
a4bd217b JG |
813 | void pblk_lookup_l2p_rand(struct pblk *pblk, struct ppa_addr *ppas, |
814 | u64 *lba_list, int nr_secs); | |
815 | void pblk_lookup_l2p_seq(struct pblk *pblk, struct ppa_addr *ppas, | |
816 | sector_t blba, int nr_secs); | |
817 | ||
818 | /* | |
819 | * pblk user I/O write path | |
820 | */ | |
821 | int pblk_write_to_cache(struct pblk *pblk, struct bio *bio, | |
822 | unsigned long flags); | |
d340121e | 823 | int pblk_write_gc_to_cache(struct pblk *pblk, struct pblk_gc_rq *gc_rq); |
a4bd217b JG |
824 | |
825 | /* | |
826 | * pblk map | |
827 | */ | |
828 | void pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd, | |
829 | unsigned int sentry, unsigned long *lun_bitmap, | |
830 | unsigned int valid_secs, struct ppa_addr *erase_ppa); | |
831 | void pblk_map_rq(struct pblk *pblk, struct nvm_rq *rqd, unsigned int sentry, | |
832 | unsigned long *lun_bitmap, unsigned int valid_secs, | |
833 | unsigned int off); | |
834 | ||
835 | /* | |
836 | * pblk write thread | |
837 | */ | |
838 | int pblk_write_ts(void *data); | |
87c1d2d3 | 839 | void pblk_write_timer_fn(struct timer_list *t); |
a4bd217b JG |
840 | void pblk_write_should_kick(struct pblk *pblk); |
841 | ||
842 | /* | |
843 | * pblk read path | |
844 | */ | |
b906bbb6 | 845 | extern struct bio_set pblk_bio_set; |
a4bd217b | 846 | int pblk_submit_read(struct pblk *pblk, struct bio *bio); |
d340121e | 847 | int pblk_submit_read_gc(struct pblk *pblk, struct pblk_gc_rq *gc_rq); |
a4bd217b JG |
848 | /* |
849 | * pblk recovery | |
850 | */ | |
851 | void pblk_submit_rec(struct work_struct *work); | |
852 | struct pblk_line *pblk_recov_l2p(struct pblk *pblk); | |
588726d3 | 853 | int pblk_recov_pad(struct pblk *pblk); |
06bc072b | 854 | int pblk_recov_check_emeta(struct pblk *pblk, struct line_emeta *emeta); |
a4bd217b JG |
855 | int pblk_recov_setup_rq(struct pblk *pblk, struct pblk_c_ctx *c_ctx, |
856 | struct pblk_rec_ctx *recovery, u64 *comp_bits, | |
857 | unsigned int comp); | |
858 | ||
859 | /* | |
860 | * pblk gc | |
861 | */ | |
b20ba1bc | 862 | #define PBLK_GC_MAX_READERS 8 /* Max number of outstanding GC reader jobs */ |
3627896a | 863 | #define PBLK_GC_RQ_QD 128 /* Queue depth for inflight GC requests */ |
b20ba1bc JG |
864 | #define PBLK_GC_L_QD 4 /* Queue depth for inflight GC lines */ |
865 | #define PBLK_GC_RSV_LINE 1 /* Reserved lines for GC */ | |
a4bd217b JG |
866 | |
867 | int pblk_gc_init(struct pblk *pblk); | |
a7c9e910 | 868 | void pblk_gc_exit(struct pblk *pblk, bool graceful); |
a4bd217b JG |
869 | void pblk_gc_should_start(struct pblk *pblk); |
870 | void pblk_gc_should_stop(struct pblk *pblk); | |
03661b5f | 871 | void pblk_gc_should_kick(struct pblk *pblk); |
37ce33d5 | 872 | void pblk_gc_free_full_lines(struct pblk *pblk); |
a4bd217b JG |
873 | void pblk_gc_sysfs_state_show(struct pblk *pblk, int *gc_enabled, |
874 | int *gc_active); | |
b20ba1bc | 875 | int pblk_gc_sysfs_force(struct pblk *pblk, int force); |
a4bd217b JG |
876 | |
877 | /* | |
878 | * pblk rate limiter | |
879 | */ | |
880 | void pblk_rl_init(struct pblk_rl *rl, int budget); | |
881 | void pblk_rl_free(struct pblk_rl *rl); | |
03661b5f | 882 | void pblk_rl_update_rates(struct pblk_rl *rl); |
b20ba1bc | 883 | int pblk_rl_high_thrs(struct pblk_rl *rl); |
a4bd217b | 884 | unsigned long pblk_rl_nr_free_blks(struct pblk_rl *rl); |
a7689938 | 885 | unsigned long pblk_rl_nr_user_free_blks(struct pblk_rl *rl); |
a4bd217b | 886 | int pblk_rl_user_may_insert(struct pblk_rl *rl, int nr_entries); |
588726d3 | 887 | void pblk_rl_inserted(struct pblk_rl *rl, int nr_entries); |
a4bd217b JG |
888 | void pblk_rl_user_in(struct pblk_rl *rl, int nr_entries); |
889 | int pblk_rl_gc_may_insert(struct pblk_rl *rl, int nr_entries); | |
890 | void pblk_rl_gc_in(struct pblk_rl *rl, int nr_entries); | |
891 | void pblk_rl_out(struct pblk_rl *rl, int nr_user, int nr_gc); | |
da67e68f | 892 | int pblk_rl_max_io(struct pblk_rl *rl); |
a4bd217b | 893 | void pblk_rl_free_lines_inc(struct pblk_rl *rl, struct pblk_line *line); |
a7689938 JG |
894 | void pblk_rl_free_lines_dec(struct pblk_rl *rl, struct pblk_line *line, |
895 | bool used); | |
588726d3 | 896 | int pblk_rl_is_limit(struct pblk_rl *rl); |
a4bd217b JG |
897 | |
898 | /* | |
899 | * pblk sysfs | |
900 | */ | |
901 | int pblk_sysfs_init(struct gendisk *tdisk); | |
902 | void pblk_sysfs_exit(struct gendisk *tdisk); | |
903 | ||
904 | static inline void *pblk_malloc(size_t size, int type, gfp_t flags) | |
905 | { | |
906 | if (type == PBLK_KMALLOC_META) | |
907 | return kmalloc(size, flags); | |
908 | return vmalloc(size); | |
909 | } | |
910 | ||
911 | static inline void pblk_mfree(void *ptr, int type) | |
912 | { | |
913 | if (type == PBLK_KMALLOC_META) | |
914 | kfree(ptr); | |
915 | else | |
916 | vfree(ptr); | |
917 | } | |
918 | ||
919 | static inline struct nvm_rq *nvm_rq_from_c_ctx(void *c_ctx) | |
920 | { | |
921 | return c_ctx - sizeof(struct nvm_rq); | |
922 | } | |
923 | ||
dd2a4343 JG |
924 | static inline void *emeta_to_bb(struct line_emeta *emeta) |
925 | { | |
926 | return emeta->bb_bitmap; | |
927 | } | |
928 | ||
76758390 HH |
929 | static inline void *emeta_to_wa(struct pblk_line_meta *lm, |
930 | struct line_emeta *emeta) | |
931 | { | |
932 | return emeta->bb_bitmap + lm->blk_bitmap_len; | |
933 | } | |
934 | ||
dd2a4343 JG |
935 | static inline void *emeta_to_lbas(struct pblk *pblk, struct line_emeta *emeta) |
936 | { | |
937 | return ((void *)emeta + pblk->lm.emeta_len[1]); | |
938 | } | |
939 | ||
940 | static inline void *emeta_to_vsc(struct pblk *pblk, struct line_emeta *emeta) | |
a4bd217b | 941 | { |
dd2a4343 | 942 | return (emeta_to_lbas(pblk, emeta) + pblk->lm.emeta_len[2]); |
a4bd217b JG |
943 | } |
944 | ||
b20ba1bc JG |
945 | static inline int pblk_line_vsc(struct pblk_line *line) |
946 | { | |
d340121e | 947 | return le32_to_cpu(*line->vsc); |
b20ba1bc JG |
948 | } |
949 | ||
a4bd217b JG |
950 | static inline int pblk_pad_distance(struct pblk *pblk) |
951 | { | |
952 | struct nvm_tgt_dev *dev = pblk->dev; | |
953 | struct nvm_geo *geo = &dev->geo; | |
954 | ||
e46f4e48 | 955 | return geo->mw_cunits * geo->all_luns * geo->ws_opt; |
a4bd217b JG |
956 | } |
957 | ||
b1bcfda1 | 958 | static inline int pblk_ppa_to_line(struct ppa_addr p) |
a4bd217b | 959 | { |
69471513 | 960 | return p.a.blk; |
a4bd217b JG |
961 | } |
962 | ||
b1bcfda1 | 963 | static inline int pblk_ppa_to_pos(struct nvm_geo *geo, struct ppa_addr p) |
a4bd217b | 964 | { |
69471513 | 965 | return p.a.lun * geo->num_ch + p.a.ch; |
a4bd217b JG |
966 | } |
967 | ||
b1bcfda1 JG |
968 | static inline struct ppa_addr addr_to_gen_ppa(struct pblk *pblk, u64 paddr, |
969 | u64 line_id) | |
a4bd217b | 970 | { |
3b2a3ad1 JG |
971 | struct nvm_tgt_dev *dev = pblk->dev; |
972 | struct nvm_geo *geo = &dev->geo; | |
b1bcfda1 JG |
973 | struct ppa_addr ppa; |
974 | ||
3b2a3ad1 JG |
975 | if (geo->version == NVM_OCSSD_SPEC_12) { |
976 | struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->addrf; | |
977 | ||
978 | ppa.ppa = 0; | |
979 | ppa.g.blk = line_id; | |
980 | ppa.g.pg = (paddr & ppaf->pg_mask) >> ppaf->pg_offset; | |
981 | ppa.g.lun = (paddr & ppaf->lun_mask) >> ppaf->lun_offset; | |
982 | ppa.g.ch = (paddr & ppaf->ch_mask) >> ppaf->ch_offset; | |
983 | ppa.g.pl = (paddr & ppaf->pln_mask) >> ppaf->pln_offset; | |
984 | ppa.g.sec = (paddr & ppaf->sec_mask) >> ppaf->sec_offset; | |
985 | } else { | |
986 | struct pblk_addrf *uaddrf = &pblk->uaddrf; | |
987 | int secs, chnls, luns; | |
988 | ||
989 | ppa.ppa = 0; | |
990 | ||
991 | ppa.m.chk = line_id; | |
992 | ||
993 | paddr = div_u64_rem(paddr, uaddrf->sec_stripe, &secs); | |
994 | ppa.m.sec = secs; | |
995 | ||
996 | paddr = div_u64_rem(paddr, uaddrf->ch_stripe, &chnls); | |
997 | ppa.m.grp = chnls; | |
998 | ||
999 | paddr = div_u64_rem(paddr, uaddrf->lun_stripe, &luns); | |
1000 | ppa.m.pu = luns; | |
1001 | ||
1002 | ppa.m.sec += uaddrf->sec_stripe * paddr; | |
1003 | } | |
b1bcfda1 JG |
1004 | |
1005 | return ppa; | |
a4bd217b JG |
1006 | } |
1007 | ||
b1bcfda1 JG |
1008 | static inline u64 pblk_dev_ppa_to_line_addr(struct pblk *pblk, |
1009 | struct ppa_addr p) | |
a4bd217b | 1010 | { |
3b2a3ad1 JG |
1011 | struct nvm_tgt_dev *dev = pblk->dev; |
1012 | struct nvm_geo *geo = &dev->geo; | |
b1bcfda1 JG |
1013 | u64 paddr; |
1014 | ||
3b2a3ad1 JG |
1015 | if (geo->version == NVM_OCSSD_SPEC_12) { |
1016 | struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->addrf; | |
1017 | ||
1018 | paddr = (u64)p.g.ch << ppaf->ch_offset; | |
1019 | paddr |= (u64)p.g.lun << ppaf->lun_offset; | |
1020 | paddr |= (u64)p.g.pg << ppaf->pg_offset; | |
1021 | paddr |= (u64)p.g.pl << ppaf->pln_offset; | |
1022 | paddr |= (u64)p.g.sec << ppaf->sec_offset; | |
1023 | } else { | |
1024 | struct pblk_addrf *uaddrf = &pblk->uaddrf; | |
1025 | u64 secs = p.m.sec; | |
1026 | int sec_stripe; | |
1027 | ||
1028 | paddr = (u64)p.m.grp * uaddrf->sec_stripe; | |
1029 | paddr += (u64)p.m.pu * uaddrf->sec_lun_stripe; | |
1030 | ||
1031 | secs = div_u64_rem(secs, uaddrf->sec_stripe, &sec_stripe); | |
1032 | paddr += secs * uaddrf->sec_ws_stripe; | |
1033 | paddr += sec_stripe; | |
1034 | } | |
b1bcfda1 JG |
1035 | |
1036 | return paddr; | |
a4bd217b JG |
1037 | } |
1038 | ||
1039 | static inline struct ppa_addr pblk_ppa32_to_ppa64(struct pblk *pblk, u32 ppa32) | |
1040 | { | |
1041 | struct ppa_addr ppa64; | |
1042 | ||
1043 | ppa64.ppa = 0; | |
1044 | ||
1045 | if (ppa32 == -1) { | |
1046 | ppa64.ppa = ADDR_EMPTY; | |
1047 | } else if (ppa32 & (1U << 31)) { | |
1048 | ppa64.c.line = ppa32 & ((~0U) >> 1); | |
1049 | ppa64.c.is_cached = 1; | |
1050 | } else { | |
3b2a3ad1 JG |
1051 | struct nvm_tgt_dev *dev = pblk->dev; |
1052 | struct nvm_geo *geo = &dev->geo; | |
1053 | ||
1054 | if (geo->version == NVM_OCSSD_SPEC_12) { | |
1055 | struct nvm_addrf_12 *ppaf = | |
1056 | (struct nvm_addrf_12 *)&pblk->addrf; | |
1057 | ||
1058 | ppa64.g.ch = (ppa32 & ppaf->ch_mask) >> | |
1059 | ppaf->ch_offset; | |
1060 | ppa64.g.lun = (ppa32 & ppaf->lun_mask) >> | |
1061 | ppaf->lun_offset; | |
1062 | ppa64.g.blk = (ppa32 & ppaf->blk_mask) >> | |
1063 | ppaf->blk_offset; | |
1064 | ppa64.g.pg = (ppa32 & ppaf->pg_mask) >> | |
1065 | ppaf->pg_offset; | |
1066 | ppa64.g.pl = (ppa32 & ppaf->pln_mask) >> | |
1067 | ppaf->pln_offset; | |
1068 | ppa64.g.sec = (ppa32 & ppaf->sec_mask) >> | |
1069 | ppaf->sec_offset; | |
1070 | } else { | |
1071 | struct nvm_addrf *lbaf = &pblk->addrf; | |
1072 | ||
1073 | ppa64.m.grp = (ppa32 & lbaf->ch_mask) >> | |
1074 | lbaf->ch_offset; | |
1075 | ppa64.m.pu = (ppa32 & lbaf->lun_mask) >> | |
1076 | lbaf->lun_offset; | |
1077 | ppa64.m.chk = (ppa32 & lbaf->chk_mask) >> | |
1078 | lbaf->chk_offset; | |
1079 | ppa64.m.sec = (ppa32 & lbaf->sec_mask) >> | |
1080 | lbaf->sec_offset; | |
1081 | } | |
a4bd217b JG |
1082 | } |
1083 | ||
1084 | return ppa64; | |
1085 | } | |
1086 | ||
a4bd217b JG |
1087 | static inline u32 pblk_ppa64_to_ppa32(struct pblk *pblk, struct ppa_addr ppa64) |
1088 | { | |
1089 | u32 ppa32 = 0; | |
1090 | ||
1091 | if (ppa64.ppa == ADDR_EMPTY) { | |
1092 | ppa32 = ~0U; | |
1093 | } else if (ppa64.c.is_cached) { | |
1094 | ppa32 |= ppa64.c.line; | |
1095 | ppa32 |= 1U << 31; | |
1096 | } else { | |
3b2a3ad1 JG |
1097 | struct nvm_tgt_dev *dev = pblk->dev; |
1098 | struct nvm_geo *geo = &dev->geo; | |
1099 | ||
1100 | if (geo->version == NVM_OCSSD_SPEC_12) { | |
1101 | struct nvm_addrf_12 *ppaf = | |
1102 | (struct nvm_addrf_12 *)&pblk->addrf; | |
1103 | ||
1104 | ppa32 |= ppa64.g.ch << ppaf->ch_offset; | |
1105 | ppa32 |= ppa64.g.lun << ppaf->lun_offset; | |
1106 | ppa32 |= ppa64.g.blk << ppaf->blk_offset; | |
1107 | ppa32 |= ppa64.g.pg << ppaf->pg_offset; | |
1108 | ppa32 |= ppa64.g.pl << ppaf->pln_offset; | |
1109 | ppa32 |= ppa64.g.sec << ppaf->sec_offset; | |
1110 | } else { | |
1111 | struct nvm_addrf *lbaf = &pblk->addrf; | |
1112 | ||
1113 | ppa32 |= ppa64.m.grp << lbaf->ch_offset; | |
1114 | ppa32 |= ppa64.m.pu << lbaf->lun_offset; | |
1115 | ppa32 |= ppa64.m.chk << lbaf->chk_offset; | |
1116 | ppa32 |= ppa64.m.sec << lbaf->sec_offset; | |
1117 | } | |
a4bd217b JG |
1118 | } |
1119 | ||
1120 | return ppa32; | |
1121 | } | |
1122 | ||
b1bcfda1 JG |
1123 | static inline struct ppa_addr pblk_trans_map_get(struct pblk *pblk, |
1124 | sector_t lba) | |
a4bd217b | 1125 | { |
b1bcfda1 JG |
1126 | struct ppa_addr ppa; |
1127 | ||
bb845ae4 | 1128 | if (pblk->addrf_len < 32) { |
a4bd217b JG |
1129 | u32 *map = (u32 *)pblk->trans_map; |
1130 | ||
b1bcfda1 | 1131 | ppa = pblk_ppa32_to_ppa64(pblk, map[lba]); |
a4bd217b | 1132 | } else { |
b1bcfda1 | 1133 | struct ppa_addr *map = (struct ppa_addr *)pblk->trans_map; |
a4bd217b | 1134 | |
b1bcfda1 | 1135 | ppa = map[lba]; |
a4bd217b | 1136 | } |
b1bcfda1 JG |
1137 | |
1138 | return ppa; | |
a4bd217b JG |
1139 | } |
1140 | ||
b1bcfda1 JG |
1141 | static inline void pblk_trans_map_set(struct pblk *pblk, sector_t lba, |
1142 | struct ppa_addr ppa) | |
a4bd217b | 1143 | { |
bb845ae4 | 1144 | if (pblk->addrf_len < 32) { |
b1bcfda1 | 1145 | u32 *map = (u32 *)pblk->trans_map; |
a4bd217b | 1146 | |
b1bcfda1 JG |
1147 | map[lba] = pblk_ppa64_to_ppa32(pblk, ppa); |
1148 | } else { | |
1149 | u64 *map = (u64 *)pblk->trans_map; | |
a4bd217b | 1150 | |
b1bcfda1 JG |
1151 | map[lba] = ppa.ppa; |
1152 | } | |
a4bd217b JG |
1153 | } |
1154 | ||
1155 | static inline int pblk_ppa_empty(struct ppa_addr ppa_addr) | |
1156 | { | |
1157 | return (ppa_addr.ppa == ADDR_EMPTY); | |
1158 | } | |
1159 | ||
1160 | static inline void pblk_ppa_set_empty(struct ppa_addr *ppa_addr) | |
1161 | { | |
1162 | ppa_addr->ppa = ADDR_EMPTY; | |
1163 | } | |
1164 | ||
07698466 JG |
1165 | static inline bool pblk_ppa_comp(struct ppa_addr lppa, struct ppa_addr rppa) |
1166 | { | |
8b7bc849 | 1167 | return (lppa.ppa == rppa.ppa); |
07698466 JG |
1168 | } |
1169 | ||
a4bd217b JG |
1170 | static inline int pblk_addr_in_cache(struct ppa_addr ppa) |
1171 | { | |
1172 | return (ppa.ppa != ADDR_EMPTY && ppa.c.is_cached); | |
1173 | } | |
1174 | ||
1175 | static inline int pblk_addr_to_cacheline(struct ppa_addr ppa) | |
1176 | { | |
1177 | return ppa.c.line; | |
1178 | } | |
1179 | ||
1180 | static inline struct ppa_addr pblk_cacheline_to_addr(int addr) | |
1181 | { | |
1182 | struct ppa_addr p; | |
1183 | ||
1184 | p.c.line = addr; | |
1185 | p.c.is_cached = 1; | |
1186 | ||
1187 | return p; | |
1188 | } | |
1189 | ||
a4bd217b | 1190 | static inline u32 pblk_calc_meta_header_crc(struct pblk *pblk, |
dd2a4343 | 1191 | struct line_header *header) |
a4bd217b JG |
1192 | { |
1193 | u32 crc = ~(u32)0; | |
1194 | ||
dd2a4343 | 1195 | crc = crc32_le(crc, (unsigned char *)header + sizeof(crc), |
a4bd217b JG |
1196 | sizeof(struct line_header) - sizeof(crc)); |
1197 | ||
1198 | return crc; | |
1199 | } | |
1200 | ||
1201 | static inline u32 pblk_calc_smeta_crc(struct pblk *pblk, | |
1202 | struct line_smeta *smeta) | |
1203 | { | |
1204 | struct pblk_line_meta *lm = &pblk->lm; | |
1205 | u32 crc = ~(u32)0; | |
1206 | ||
1207 | crc = crc32_le(crc, (unsigned char *)smeta + | |
1208 | sizeof(struct line_header) + sizeof(crc), | |
1209 | lm->smeta_len - | |
1210 | sizeof(struct line_header) - sizeof(crc)); | |
1211 | ||
1212 | return crc; | |
1213 | } | |
1214 | ||
1215 | static inline u32 pblk_calc_emeta_crc(struct pblk *pblk, | |
1216 | struct line_emeta *emeta) | |
1217 | { | |
1218 | struct pblk_line_meta *lm = &pblk->lm; | |
1219 | u32 crc = ~(u32)0; | |
1220 | ||
1221 | crc = crc32_le(crc, (unsigned char *)emeta + | |
1222 | sizeof(struct line_header) + sizeof(crc), | |
dd2a4343 | 1223 | lm->emeta_len[0] - |
a4bd217b JG |
1224 | sizeof(struct line_header) - sizeof(crc)); |
1225 | ||
1226 | return crc; | |
1227 | } | |
1228 | ||
1229 | static inline int pblk_set_progr_mode(struct pblk *pblk, int type) | |
1230 | { | |
1231 | struct nvm_tgt_dev *dev = pblk->dev; | |
1232 | struct nvm_geo *geo = &dev->geo; | |
1233 | int flags; | |
1234 | ||
3b2a3ad1 JG |
1235 | if (geo->version == NVM_OCSSD_SPEC_20) |
1236 | return 0; | |
1237 | ||
a40afad9 | 1238 | flags = geo->pln_mode >> 1; |
a4bd217b | 1239 | |
e2cddf20 | 1240 | if (type == PBLK_WRITE) |
a4bd217b JG |
1241 | flags |= NVM_IO_SCRAMBLE_ENABLE; |
1242 | ||
1243 | return flags; | |
1244 | } | |
1245 | ||
f9c10152 JG |
1246 | enum { |
1247 | PBLK_READ_RANDOM = 0, | |
1248 | PBLK_READ_SEQUENTIAL = 1, | |
1249 | }; | |
1250 | ||
1251 | static inline int pblk_set_read_mode(struct pblk *pblk, int type) | |
1252 | { | |
1253 | struct nvm_tgt_dev *dev = pblk->dev; | |
1254 | struct nvm_geo *geo = &dev->geo; | |
1255 | int flags; | |
1256 | ||
3b2a3ad1 JG |
1257 | if (geo->version == NVM_OCSSD_SPEC_20) |
1258 | return 0; | |
1259 | ||
f9c10152 JG |
1260 | flags = NVM_IO_SUSPEND | NVM_IO_SCRAMBLE_ENABLE; |
1261 | if (type == PBLK_READ_SEQUENTIAL) | |
a40afad9 | 1262 | flags |= geo->pln_mode >> 1; |
f9c10152 JG |
1263 | |
1264 | return flags; | |
1265 | } | |
1266 | ||
1267 | static inline int pblk_io_aligned(struct pblk *pblk, int nr_secs) | |
a4bd217b | 1268 | { |
f9c10152 | 1269 | return !(nr_secs % pblk->min_write_pgs); |
a4bd217b JG |
1270 | } |
1271 | ||
1272 | #ifdef CONFIG_NVM_DEBUG | |
3b2a3ad1 JG |
1273 | static inline void print_ppa(struct nvm_geo *geo, struct ppa_addr *p, |
1274 | char *msg, int error) | |
a4bd217b JG |
1275 | { |
1276 | if (p->c.is_cached) { | |
1277 | pr_err("ppa: (%s: %x) cache line: %llu\n", | |
1278 | msg, error, (u64)p->c.line); | |
3b2a3ad1 | 1279 | } else if (geo->version == NVM_OCSSD_SPEC_12) { |
a4bd217b JG |
1280 | pr_err("ppa: (%s: %x):ch:%d,lun:%d,blk:%d,pg:%d,pl:%d,sec:%d\n", |
1281 | msg, error, | |
1282 | p->g.ch, p->g.lun, p->g.blk, | |
1283 | p->g.pg, p->g.pl, p->g.sec); | |
3b2a3ad1 JG |
1284 | } else { |
1285 | pr_err("ppa: (%s: %x):ch:%d,lun:%d,chk:%d,sec:%d\n", | |
1286 | msg, error, | |
1287 | p->m.grp, p->m.pu, p->m.chk, p->m.sec); | |
a4bd217b JG |
1288 | } |
1289 | } | |
1290 | ||
1291 | static inline void pblk_print_failed_rqd(struct pblk *pblk, struct nvm_rq *rqd, | |
1292 | int error) | |
1293 | { | |
1294 | int bit = -1; | |
1295 | ||
1296 | if (rqd->nr_ppas == 1) { | |
3b2a3ad1 | 1297 | print_ppa(&pblk->dev->geo, &rqd->ppa_addr, "rqd", error); |
a4bd217b JG |
1298 | return; |
1299 | } | |
1300 | ||
1301 | while ((bit = find_next_bit((void *)&rqd->ppa_status, rqd->nr_ppas, | |
1302 | bit + 1)) < rqd->nr_ppas) { | |
3b2a3ad1 | 1303 | print_ppa(&pblk->dev->geo, &rqd->ppa_list[bit], "rqd", error); |
a4bd217b JG |
1304 | } |
1305 | ||
1306 | pr_err("error:%d, ppa_status:%llx\n", error, rqd->ppa_status); | |
1307 | } | |
a4bd217b JG |
1308 | |
1309 | static inline int pblk_boundary_ppa_checks(struct nvm_tgt_dev *tgt_dev, | |
1310 | struct ppa_addr *ppas, int nr_ppas) | |
1311 | { | |
1312 | struct nvm_geo *geo = &tgt_dev->geo; | |
1313 | struct ppa_addr *ppa; | |
1314 | int i; | |
1315 | ||
1316 | for (i = 0; i < nr_ppas; i++) { | |
1317 | ppa = &ppas[i]; | |
1318 | ||
3b2a3ad1 JG |
1319 | if (geo->version == NVM_OCSSD_SPEC_12) { |
1320 | if (!ppa->c.is_cached && | |
1321 | ppa->g.ch < geo->num_ch && | |
1322 | ppa->g.lun < geo->num_lun && | |
1323 | ppa->g.pl < geo->num_pln && | |
1324 | ppa->g.blk < geo->num_chk && | |
1325 | ppa->g.pg < geo->num_pg && | |
1326 | ppa->g.sec < geo->ws_min) | |
1327 | continue; | |
1328 | } else { | |
1329 | if (!ppa->c.is_cached && | |
1330 | ppa->m.grp < geo->num_ch && | |
1331 | ppa->m.pu < geo->num_lun && | |
1332 | ppa->m.chk < geo->num_chk && | |
1333 | ppa->m.sec < geo->clba) | |
1334 | continue; | |
1335 | } | |
1336 | ||
1337 | print_ppa(geo, ppa, "boundary", i); | |
1a94b2d4 | 1338 | |
a4bd217b JG |
1339 | return 1; |
1340 | } | |
1341 | return 0; | |
1342 | } | |
1343 | ||
1a94b2d4 JG |
1344 | static inline int pblk_check_io(struct pblk *pblk, struct nvm_rq *rqd) |
1345 | { | |
1346 | struct nvm_tgt_dev *dev = pblk->dev; | |
1347 | struct ppa_addr *ppa_list; | |
1348 | ||
1349 | ppa_list = (rqd->nr_ppas > 1) ? rqd->ppa_list : &rqd->ppa_addr; | |
1350 | ||
1351 | if (pblk_boundary_ppa_checks(dev, ppa_list, rqd->nr_ppas)) { | |
1352 | WARN_ON(1); | |
1353 | return -EINVAL; | |
1354 | } | |
1355 | ||
1356 | if (rqd->opcode == NVM_OP_PWRITE) { | |
1357 | struct pblk_line *line; | |
1358 | struct ppa_addr ppa; | |
1359 | int i; | |
1360 | ||
1361 | for (i = 0; i < rqd->nr_ppas; i++) { | |
1362 | ppa = ppa_list[i]; | |
b1bcfda1 | 1363 | line = &pblk->lines[pblk_ppa_to_line(ppa)]; |
1a94b2d4 JG |
1364 | |
1365 | spin_lock(&line->lock); | |
1366 | if (line->state != PBLK_LINESTATE_OPEN) { | |
1367 | pr_err("pblk: bad ppa: line:%d,state:%d\n", | |
1368 | line->id, line->state); | |
1369 | WARN_ON(1); | |
1370 | spin_unlock(&line->lock); | |
1371 | return -EINVAL; | |
1372 | } | |
1373 | spin_unlock(&line->lock); | |
1374 | } | |
1375 | } | |
1376 | ||
1377 | return 0; | |
1378 | } | |
1379 | #endif | |
1380 | ||
a4bd217b JG |
1381 | static inline int pblk_boundary_paddr_checks(struct pblk *pblk, u64 paddr) |
1382 | { | |
1383 | struct pblk_line_meta *lm = &pblk->lm; | |
1384 | ||
1385 | if (paddr > lm->sec_per_line) | |
1386 | return 1; | |
1387 | ||
1388 | return 0; | |
1389 | } | |
1390 | ||
1391 | static inline unsigned int pblk_get_bi_idx(struct bio *bio) | |
1392 | { | |
1393 | return bio->bi_iter.bi_idx; | |
1394 | } | |
1395 | ||
1396 | static inline sector_t pblk_get_lba(struct bio *bio) | |
1397 | { | |
1398 | return bio->bi_iter.bi_sector / NR_PHY_IN_LOG; | |
1399 | } | |
1400 | ||
1401 | static inline unsigned int pblk_get_secs(struct bio *bio) | |
1402 | { | |
1403 | return bio->bi_iter.bi_size / PBLK_EXPOSED_PAGE_SIZE; | |
1404 | } | |
1405 | ||
a4bd217b JG |
1406 | static inline void pblk_setup_uuid(struct pblk *pblk) |
1407 | { | |
1408 | uuid_le uuid; | |
1409 | ||
1410 | uuid_le_gen(&uuid); | |
1411 | memcpy(pblk->instance_uuid, uuid.b, 16); | |
1412 | } | |
1413 | #endif /* PBLK_H_ */ |