Line data Source code
1 : /* SPDX-License-Identifier: BSD-3-Clause
2 : * Copyright (C) 2015 Intel Corporation. All rights reserved.
3 : * Copyright (c) 2020, 2021 Mellanox Technologies LTD. All rights reserved.
4 : * Copyright (c) 2021-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
5 : */
6 :
7 : #ifndef __NVME_INTERNAL_H__
8 : #define __NVME_INTERNAL_H__
9 :
10 : #include "spdk/config.h"
11 : #include "spdk/likely.h"
12 : #include "spdk/stdinc.h"
13 :
14 : #include "spdk/nvme.h"
15 :
16 : #if defined(__i386__) || defined(__x86_64__)
17 : #include <x86intrin.h>
18 : #endif
19 :
20 : #include "spdk/queue.h"
21 : #include "spdk/barrier.h"
22 : #include "spdk/bit_array.h"
23 : #include "spdk/mmio.h"
24 : #include "spdk/pci_ids.h"
25 : #include "spdk/util.h"
26 : #include "spdk/memory.h"
27 : #include "spdk/nvme_intel.h"
28 : #include "spdk/nvmf_spec.h"
29 : #include "spdk/tree.h"
30 : #include "spdk/uuid.h"
31 :
32 : #include "spdk_internal/assert.h"
33 : #include "spdk/log.h"
34 :
35 : extern pid_t g_spdk_nvme_pid;
36 :
37 : extern struct spdk_nvme_transport_opts g_spdk_nvme_transport_opts;
38 :
39 : /*
40 : * Some Intel devices support vendor-unique read latency log page even
41 : * though the log page directory says otherwise.
42 : */
43 : #define NVME_INTEL_QUIRK_READ_LATENCY 0x1
44 :
45 : /*
46 : * Some Intel devices support vendor-unique write latency log page even
47 : * though the log page directory says otherwise.
48 : */
49 : #define NVME_INTEL_QUIRK_WRITE_LATENCY 0x2
50 :
51 : /*
52 : * The controller needs a delay before starts checking the device
53 : * readiness, which is done by reading the NVME_CSTS_RDY bit.
54 : */
55 : #define NVME_QUIRK_DELAY_BEFORE_CHK_RDY 0x4
56 :
57 : /*
58 : * The controller performs best when I/O is split on particular
59 : * LBA boundaries.
60 : */
61 : #define NVME_INTEL_QUIRK_STRIPING 0x8
62 :
63 : /*
64 : * The controller needs a delay after allocating an I/O queue pair
65 : * before it is ready to accept I/O commands.
66 : */
67 : #define NVME_QUIRK_DELAY_AFTER_QUEUE_ALLOC 0x10
68 :
69 : /*
70 : * Earlier NVMe devices do not indicate whether unmapped blocks
71 : * will read all zeroes or not. This define indicates that the
72 : * device does in fact read all zeroes after an unmap event
73 : */
74 : #define NVME_QUIRK_READ_ZERO_AFTER_DEALLOCATE 0x20
75 :
76 : /*
77 : * The controller doesn't handle Identify value others than 0 or 1 correctly.
78 : */
79 : #define NVME_QUIRK_IDENTIFY_CNS 0x40
80 :
81 : /*
82 : * The controller supports Open Channel command set if matching additional
83 : * condition, like the first byte (value 0x1) in the vendor specific
84 : * bits of the namespace identify structure is set.
85 : */
86 : #define NVME_QUIRK_OCSSD 0x80
87 :
88 : /*
89 : * The controller has an Intel vendor ID but does not support Intel vendor-specific
90 : * log pages. This is primarily for QEMU emulated SSDs which report an Intel vendor
91 : * ID but do not support these log pages.
92 : */
93 : #define NVME_INTEL_QUIRK_NO_LOG_PAGES 0x100
94 :
95 : /*
96 : * The controller does not set SHST_COMPLETE in a reasonable amount of time. This
97 : * is primarily seen in virtual VMWare NVMe SSDs. This quirk merely adds an additional
98 : * error message that on VMWare NVMe SSDs, the shutdown timeout may be expected.
99 : */
100 : #define NVME_QUIRK_SHST_COMPLETE 0x200
101 :
102 : /*
103 : * The controller requires an extra delay before starting the initialization process
104 : * during attach.
105 : */
106 : #define NVME_QUIRK_DELAY_BEFORE_INIT 0x400
107 :
108 : /*
109 : * Some SSDs exhibit poor performance with the default SPDK NVMe IO queue size.
110 : * This quirk will increase the default to 1024 which matches other operating
111 : * systems, at the cost of some extra memory usage. Users can still override
112 : * the increased default by changing the spdk_nvme_io_qpair_opts when allocating
113 : * a new queue pair.
114 : */
115 : #define NVME_QUIRK_MINIMUM_IO_QUEUE_SIZE 0x800
116 :
117 : /**
118 : * The maximum access width to PCI memory space is 8 Bytes, don't use AVX2 or
119 : * SSE instructions to optimize the memory access(memcpy or memset) larger than
120 : * 8 Bytes.
121 : */
122 : #define NVME_QUIRK_MAXIMUM_PCI_ACCESS_WIDTH 0x1000
123 :
124 : /**
125 : * The SSD does not support OPAL even through it sets the security bit in OACS.
126 : */
127 : #define NVME_QUIRK_OACS_SECURITY 0x2000
128 :
129 : /**
130 : * Intel P55XX SSDs can't support Dataset Management command with SGL format,
131 : * so use PRP with DSM command.
132 : */
133 : #define NVME_QUIRK_NO_SGL_FOR_DSM 0x4000
134 :
135 : /**
136 : * Maximum Data Transfer Size(MDTS) excludes interleaved metadata.
137 : */
138 : #define NVME_QUIRK_MDTS_EXCLUDE_MD 0x8000
139 :
140 : /**
141 : * Force not to use SGL even the controller report that it can
142 : * support it.
143 : */
144 : #define NVME_QUIRK_NOT_USE_SGL 0x10000
145 :
146 : /*
147 : * Some SSDs require the admin submission queue size to equate to an even
148 : * 4KiB multiple.
149 : */
150 : #define NVME_QUIRK_MINIMUM_ADMIN_QUEUE_SIZE 0x20000
151 :
152 : #define NVME_MAX_ASYNC_EVENTS (8)
153 :
154 : #define NVME_MAX_ADMIN_TIMEOUT_IN_SECS (30)
155 :
156 : /* Maximum log page size to fetch for AERs. */
157 : #define NVME_MAX_AER_LOG_SIZE (4096)
158 :
159 : /*
160 : * NVME_MAX_IO_QUEUES in nvme_spec.h defines the 64K spec-limit, but this
161 : * define specifies the maximum number of queues this driver will actually
162 : * try to configure, if available.
163 : */
164 : #define DEFAULT_MAX_IO_QUEUES (1024)
165 : #define DEFAULT_ADMIN_QUEUE_SIZE (32)
166 : #define DEFAULT_IO_QUEUE_SIZE (256)
167 : #define DEFAULT_IO_QUEUE_SIZE_FOR_QUIRK (1024) /* Matches Linux kernel driver */
168 :
169 : #define DEFAULT_IO_QUEUE_REQUESTS (512)
170 :
171 : #define SPDK_NVME_DEFAULT_RETRY_COUNT (4)
172 :
173 : #define SPDK_NVME_TRANSPORT_ACK_TIMEOUT_DISABLED (0)
174 : #define SPDK_NVME_DEFAULT_TRANSPORT_ACK_TIMEOUT SPDK_NVME_TRANSPORT_ACK_TIMEOUT_DISABLED
175 :
176 : #define SPDK_NVME_TRANSPORT_TOS_DISABLED (0)
177 :
178 : #define MIN_KEEP_ALIVE_TIMEOUT_IN_MS (10000)
179 :
180 : /* We want to fit submission and completion rings each in a single 2MB
181 : * hugepage to ensure physical address contiguity.
182 : */
183 : #define MAX_IO_QUEUE_ENTRIES (VALUE_2MB / spdk_max( \
184 : sizeof(struct spdk_nvme_cmd), \
185 : sizeof(struct spdk_nvme_cpl)))
186 :
187 : /* Default timeout for fabrics connect commands. */
188 : #ifdef DEBUG
189 : #define NVME_FABRIC_CONNECT_COMMAND_TIMEOUT 0
190 : #else
191 : /* 500 millisecond timeout. */
192 : #define NVME_FABRIC_CONNECT_COMMAND_TIMEOUT 500000
193 : #endif
194 :
195 : /* This value indicates that a read from a PCIe register is invalid. This can happen when a device is no longer present */
196 : #define SPDK_NVME_INVALID_REGISTER_VALUE 0xFFFFFFFFu
197 :
198 : enum nvme_payload_type {
199 : NVME_PAYLOAD_TYPE_INVALID = 0,
200 :
201 : /** nvme_request::u.payload.contig_buffer is valid for this request */
202 : NVME_PAYLOAD_TYPE_CONTIG,
203 :
204 : /** nvme_request::u.sgl is valid for this request */
205 : NVME_PAYLOAD_TYPE_SGL,
206 : };
207 :
208 : /** Boot partition write states */
209 : enum nvme_bp_write_state {
210 : SPDK_NVME_BP_WS_DOWNLOADING = 0x0,
211 : SPDK_NVME_BP_WS_DOWNLOADED = 0x1,
212 : SPDK_NVME_BP_WS_REPLACE = 0x2,
213 : SPDK_NVME_BP_WS_ACTIVATE = 0x3,
214 : };
215 :
216 : /**
217 : * Descriptor for a request data payload.
218 : */
219 : struct nvme_payload {
220 : /**
221 : * Functions for retrieving physical addresses for scattered payloads.
222 : */
223 : spdk_nvme_req_reset_sgl_cb reset_sgl_fn;
224 : spdk_nvme_req_next_sge_cb next_sge_fn;
225 :
226 : /**
227 : * Extended IO options passed by the user
228 : */
229 : struct spdk_nvme_ns_cmd_ext_io_opts *opts;
230 : /**
231 : * If reset_sgl_fn == NULL, this is a contig payload, and contig_or_cb_arg contains the
232 : * virtual memory address of a single virtually contiguous buffer.
233 : *
234 : * If reset_sgl_fn != NULL, this is a SGL payload, and contig_or_cb_arg contains the
235 : * cb_arg that will be passed to the SGL callback functions.
236 : */
237 : void *contig_or_cb_arg;
238 :
239 : /** Virtual memory address of a single virtually contiguous metadata buffer */
240 : void *md;
241 : };
242 :
243 : #define NVME_PAYLOAD_CONTIG(contig_, md_) \
244 : (struct nvme_payload) { \
245 : .reset_sgl_fn = NULL, \
246 : .next_sge_fn = NULL, \
247 : .contig_or_cb_arg = (contig_), \
248 : .md = (md_), \
249 : }
250 :
251 : #define NVME_PAYLOAD_SGL(reset_sgl_fn_, next_sge_fn_, cb_arg_, md_) \
252 : (struct nvme_payload) { \
253 : .reset_sgl_fn = (reset_sgl_fn_), \
254 : .next_sge_fn = (next_sge_fn_), \
255 : .contig_or_cb_arg = (cb_arg_), \
256 : .md = (md_), \
257 : }
258 :
259 : static inline enum nvme_payload_type
260 143 : nvme_payload_type(const struct nvme_payload *payload) {
261 143 : return payload->reset_sgl_fn ? NVME_PAYLOAD_TYPE_SGL : NVME_PAYLOAD_TYPE_CONTIG;
262 : }
263 :
264 : struct nvme_error_cmd {
265 : bool do_not_submit;
266 : uint64_t timeout_tsc;
267 : uint32_t err_count;
268 : uint8_t opc;
269 : struct spdk_nvme_status status;
270 : TAILQ_ENTRY(nvme_error_cmd) link;
271 : };
272 :
273 : struct nvme_request {
274 : struct spdk_nvme_cmd cmd;
275 :
276 : uint8_t retries;
277 :
278 : uint8_t timed_out : 1;
279 :
280 : /**
281 : * True if the request is in the queued_req list.
282 : */
283 : uint8_t queued : 1;
284 : uint8_t reserved : 6;
285 :
286 : /**
287 : * Number of children requests still outstanding for this
288 : * request which was split into multiple child requests.
289 : */
290 : uint16_t num_children;
291 :
292 : /**
293 : * Offset in bytes from the beginning of payload for this request.
294 : * This is used for I/O commands that are split into multiple requests.
295 : */
296 : uint32_t payload_offset;
297 : uint32_t md_offset;
298 :
299 : uint32_t payload_size;
300 :
301 : /**
302 : * Timeout ticks for error injection requests, can be extended in future
303 : * to support per-request timeout feature.
304 : */
305 : uint64_t timeout_tsc;
306 :
307 : /**
308 : * Data payload for this request's command.
309 : */
310 : struct nvme_payload payload;
311 :
312 : spdk_nvme_cmd_cb cb_fn;
313 : void *cb_arg;
314 : STAILQ_ENTRY(nvme_request) stailq;
315 :
316 : struct spdk_nvme_qpair *qpair;
317 :
318 : /*
319 : * The value of spdk_get_ticks() when the request was submitted to the hardware.
320 : * Only set if ctrlr->timeout_enabled is true.
321 : */
322 : uint64_t submit_tick;
323 :
324 : /**
325 : * The active admin request can be moved to a per process pending
326 : * list based on the saved pid to tell which process it belongs
327 : * to. The cpl saves the original completion information which
328 : * is used in the completion callback.
329 : * NOTE: these below two fields are only used for admin request.
330 : */
331 : pid_t pid;
332 : struct spdk_nvme_cpl cpl;
333 :
334 : uint32_t md_size;
335 :
336 : /**
337 : * The following members should not be reordered with members
338 : * above. These members are only needed when splitting
339 : * requests which is done rarely, and the driver is careful
340 : * to not touch the following fields until a split operation is
341 : * needed, to avoid touching an extra cacheline.
342 : */
343 :
344 : /**
345 : * Points to the outstanding child requests for a parent request.
346 : * Only valid if a request was split into multiple children
347 : * requests, and is not initialized for non-split requests.
348 : */
349 : TAILQ_HEAD(, nvme_request) children;
350 :
351 : /**
352 : * Linked-list pointers for a child request in its parent's list.
353 : */
354 : TAILQ_ENTRY(nvme_request) child_tailq;
355 :
356 : /**
357 : * Points to a parent request if part of a split request,
358 : * NULL otherwise.
359 : */
360 : struct nvme_request *parent;
361 :
362 : /**
363 : * Completion status for a parent request. Initialized to all 0's
364 : * (SUCCESS) before child requests are submitted. If a child
365 : * request completes with error, the error status is copied here,
366 : * to ensure that the parent request is also completed with error
367 : * status once all child requests are completed.
368 : */
369 : struct spdk_nvme_cpl parent_status;
370 :
371 : /**
372 : * The user_cb_fn and user_cb_arg fields are used for holding the original
373 : * callback data when using nvme_allocate_request_user_copy.
374 : */
375 : spdk_nvme_cmd_cb user_cb_fn;
376 : void *user_cb_arg;
377 : void *user_buffer;
378 :
379 : /** Sequence of accel operations associated with this request */
380 : void *accel_sequence;
381 : };
382 :
383 : struct nvme_completion_poll_status {
384 : struct spdk_nvme_cpl cpl;
385 : uint64_t timeout_tsc;
386 : /**
387 : * DMA buffer retained throughout the duration of the command. It'll be released
388 : * automatically if the command times out, otherwise the user is responsible for freeing it.
389 : */
390 : void *dma_data;
391 : bool done;
392 : /* This flag indicates that the request has been timed out and the memory
393 : must be freed in a completion callback */
394 : bool timed_out;
395 : };
396 :
397 : struct nvme_async_event_request {
398 : struct spdk_nvme_ctrlr *ctrlr;
399 : struct nvme_request *req;
400 : struct spdk_nvme_cpl cpl;
401 : };
402 :
403 : enum nvme_qpair_state {
404 : NVME_QPAIR_DISCONNECTED,
405 : NVME_QPAIR_DISCONNECTING,
406 : NVME_QPAIR_CONNECTING,
407 : NVME_QPAIR_CONNECTED,
408 : NVME_QPAIR_ENABLING,
409 : NVME_QPAIR_ENABLED,
410 : NVME_QPAIR_DESTROYING,
411 : };
412 :
413 : struct spdk_nvme_qpair {
414 : struct spdk_nvme_ctrlr *ctrlr;
415 :
416 : uint16_t id;
417 :
418 : uint8_t qprio: 2;
419 :
420 : uint8_t state: 3;
421 :
422 : uint8_t async: 1;
423 :
424 : uint8_t is_new_qpair: 1;
425 :
426 : uint8_t abort_dnr: 1;
427 : /*
428 : * Members for handling IO qpair deletion inside of a completion context.
429 : * These are specifically defined as single bits, so that they do not
430 : * push this data structure out to another cacheline.
431 : */
432 : uint8_t in_completion_context: 1;
433 : uint8_t delete_after_completion_context: 1;
434 :
435 : /*
436 : * Set when no deletion notification is needed. For example, the process
437 : * which allocated this qpair exited unexpectedly.
438 : */
439 : uint8_t no_deletion_notification_needed: 1;
440 :
441 : uint8_t last_fuse: 2;
442 :
443 : uint8_t transport_failure_reason: 3;
444 : uint8_t last_transport_failure_reason: 3;
445 :
446 : /* The user is destroying qpair */
447 : uint8_t destroy_in_progress: 1;
448 :
449 : enum spdk_nvme_transport_type trtype;
450 :
451 : uint32_t num_outstanding_reqs;
452 :
453 : /* request object used only for this qpair's FABRICS/CONNECT command (if needed) */
454 : struct nvme_request *reserved_req;
455 :
456 : STAILQ_HEAD(, nvme_request) free_req;
457 : STAILQ_HEAD(, nvme_request) queued_req;
458 :
459 : /* List entry for spdk_nvme_transport_poll_group::qpairs */
460 : STAILQ_ENTRY(spdk_nvme_qpair) poll_group_stailq;
461 :
462 : /** Commands opcode in this list will return error */
463 : TAILQ_HEAD(, nvme_error_cmd) err_cmd_head;
464 : /** Requests in this list will return error */
465 : STAILQ_HEAD(, nvme_request) err_req_head;
466 :
467 : struct spdk_nvme_ctrlr_process *active_proc;
468 :
469 : struct spdk_nvme_transport_poll_group *poll_group;
470 :
471 : void *poll_group_tailq_head;
472 :
473 : const struct spdk_nvme_transport *transport;
474 :
475 : /* Entries below here are not touched in the main I/O path. */
476 :
477 : struct nvme_completion_poll_status *poll_status;
478 :
479 : /* List entry for spdk_nvme_ctrlr::active_io_qpairs */
480 : TAILQ_ENTRY(spdk_nvme_qpair) tailq;
481 :
482 : /* List entry for spdk_nvme_ctrlr_process::allocated_io_qpairs */
483 : TAILQ_ENTRY(spdk_nvme_qpair) per_process_tailq;
484 :
485 : STAILQ_HEAD(, nvme_request) aborting_queued_req;
486 :
487 : void *req_buf;
488 : };
489 :
490 : struct spdk_nvme_poll_group {
491 : void *ctx;
492 : struct spdk_nvme_accel_fn_table accel_fn_table;
493 : STAILQ_HEAD(, spdk_nvme_transport_poll_group) tgroups;
494 : bool in_process_completions;
495 : };
496 :
497 : struct spdk_nvme_transport_poll_group {
498 : struct spdk_nvme_poll_group *group;
499 : const struct spdk_nvme_transport *transport;
500 : STAILQ_HEAD(, spdk_nvme_qpair) connected_qpairs;
501 : STAILQ_HEAD(, spdk_nvme_qpair) disconnected_qpairs;
502 : STAILQ_ENTRY(spdk_nvme_transport_poll_group) link;
503 : uint32_t num_connected_qpairs;
504 : };
505 :
506 : struct spdk_nvme_ns {
507 : struct spdk_nvme_ctrlr *ctrlr;
508 : uint32_t sector_size;
509 :
510 : /*
511 : * Size of data transferred as part of each block,
512 : * including metadata if FLBAS indicates the metadata is transferred
513 : * as part of the data buffer at the end of each LBA.
514 : */
515 : uint32_t extended_lba_size;
516 :
517 : uint32_t md_size;
518 : uint32_t pi_type;
519 : uint32_t sectors_per_max_io;
520 : uint32_t sectors_per_max_io_no_md;
521 : uint32_t sectors_per_stripe;
522 : uint32_t id;
523 : uint16_t flags;
524 : bool active;
525 :
526 : /* Command Set Identifier */
527 : enum spdk_nvme_csi csi;
528 :
529 : /* Namespace Identification Descriptor List (CNS = 03h) */
530 : uint8_t id_desc_list[4096];
531 :
532 : uint32_t ana_group_id;
533 : enum spdk_nvme_ana_state ana_state;
534 :
535 : /* Identify Namespace data. */
536 : struct spdk_nvme_ns_data nsdata;
537 :
538 : /* Zoned Namespace Command Set Specific Identify Namespace data. */
539 : struct spdk_nvme_zns_ns_data *nsdata_zns;
540 :
541 : RB_ENTRY(spdk_nvme_ns) node;
542 : };
543 :
544 : /**
545 : * State of struct spdk_nvme_ctrlr (in particular, during initialization).
546 : */
547 : enum nvme_ctrlr_state {
548 : /**
549 : * Wait before initializing the controller.
550 : */
551 : NVME_CTRLR_STATE_INIT_DELAY,
552 :
553 : /**
554 : * Connect the admin queue.
555 : */
556 : NVME_CTRLR_STATE_CONNECT_ADMINQ,
557 :
558 : /**
559 : * Controller has not started initialized yet.
560 : */
561 : NVME_CTRLR_STATE_INIT = NVME_CTRLR_STATE_CONNECT_ADMINQ,
562 :
563 : /**
564 : * Waiting for admin queue to connect.
565 : */
566 : NVME_CTRLR_STATE_WAIT_FOR_CONNECT_ADMINQ,
567 :
568 : /**
569 : * Read Version (VS) register.
570 : */
571 : NVME_CTRLR_STATE_READ_VS,
572 :
573 : /**
574 : * Waiting for Version (VS) register to be read.
575 : */
576 : NVME_CTRLR_STATE_READ_VS_WAIT_FOR_VS,
577 :
578 : /**
579 : * Read Capabilities (CAP) register.
580 : */
581 : NVME_CTRLR_STATE_READ_CAP,
582 :
583 : /**
584 : * Waiting for Capabilities (CAP) register to be read.
585 : */
586 : NVME_CTRLR_STATE_READ_CAP_WAIT_FOR_CAP,
587 :
588 : /**
589 : * Check EN to prepare for controller initialization.
590 : */
591 : NVME_CTRLR_STATE_CHECK_EN,
592 :
593 : /**
594 : * Waiting for CC to be read as part of EN check.
595 : */
596 : NVME_CTRLR_STATE_CHECK_EN_WAIT_FOR_CC,
597 :
598 : /**
599 : * Waiting for CSTS.RDY to transition from 0 to 1 so that CC.EN may be set to 0.
600 : */
601 : NVME_CTRLR_STATE_DISABLE_WAIT_FOR_READY_1,
602 :
603 : /**
604 : * Waiting for CSTS register to be read as part of waiting for CSTS.RDY = 1.
605 : */
606 : NVME_CTRLR_STATE_DISABLE_WAIT_FOR_READY_1_WAIT_FOR_CSTS,
607 :
608 : /**
609 : * Disabling the controller by setting CC.EN to 0.
610 : */
611 : NVME_CTRLR_STATE_SET_EN_0,
612 :
613 : /**
614 : * Waiting for the CC register to be read as part of disabling the controller.
615 : */
616 : NVME_CTRLR_STATE_SET_EN_0_WAIT_FOR_CC,
617 :
618 : /**
619 : * Waiting for CSTS.RDY to transition from 1 to 0 so that CC.EN may be set to 1.
620 : */
621 : NVME_CTRLR_STATE_DISABLE_WAIT_FOR_READY_0,
622 :
623 : /**
624 : * Waiting for CSTS register to be read as part of waiting for CSTS.RDY = 0.
625 : */
626 : NVME_CTRLR_STATE_DISABLE_WAIT_FOR_READY_0_WAIT_FOR_CSTS,
627 :
628 : /**
629 : * The controller is disabled. (CC.EN and CSTS.RDY are 0.)
630 : */
631 : NVME_CTRLR_STATE_DISABLED,
632 :
633 : /**
634 : * Enable the controller by writing CC.EN to 1
635 : */
636 : NVME_CTRLR_STATE_ENABLE,
637 :
638 : /**
639 : * Waiting for CC register to be written as part of enabling the controller.
640 : */
641 : NVME_CTRLR_STATE_ENABLE_WAIT_FOR_CC,
642 :
643 : /**
644 : * Waiting for CSTS.RDY to transition from 0 to 1 after enabling the controller.
645 : */
646 : NVME_CTRLR_STATE_ENABLE_WAIT_FOR_READY_1,
647 :
648 : /**
649 : * Waiting for CSTS register to be read as part of waiting for CSTS.RDY = 1.
650 : */
651 : NVME_CTRLR_STATE_ENABLE_WAIT_FOR_READY_1_WAIT_FOR_CSTS,
652 :
653 : /**
654 : * Reset the Admin queue of the controller.
655 : */
656 : NVME_CTRLR_STATE_RESET_ADMIN_QUEUE,
657 :
658 : /**
659 : * Identify Controller command will be sent to then controller.
660 : */
661 : NVME_CTRLR_STATE_IDENTIFY,
662 :
663 : /**
664 : * Waiting for Identify Controller command be completed.
665 : */
666 : NVME_CTRLR_STATE_WAIT_FOR_IDENTIFY,
667 :
668 : /**
669 : * Configure AER of the controller.
670 : */
671 : NVME_CTRLR_STATE_CONFIGURE_AER,
672 :
673 : /**
674 : * Waiting for the Configure AER to be completed.
675 : */
676 : NVME_CTRLR_STATE_WAIT_FOR_CONFIGURE_AER,
677 :
678 : /**
679 : * Set Keep Alive Timeout of the controller.
680 : */
681 : NVME_CTRLR_STATE_SET_KEEP_ALIVE_TIMEOUT,
682 :
683 : /**
684 : * Waiting for Set Keep Alive Timeout to be completed.
685 : */
686 : NVME_CTRLR_STATE_WAIT_FOR_KEEP_ALIVE_TIMEOUT,
687 :
688 : /**
689 : * Get Identify I/O Command Set Specific Controller data structure.
690 : */
691 : NVME_CTRLR_STATE_IDENTIFY_IOCS_SPECIFIC,
692 :
693 : /**
694 : * Waiting for Identify I/O Command Set Specific Controller command to be completed.
695 : */
696 : NVME_CTRLR_STATE_WAIT_FOR_IDENTIFY_IOCS_SPECIFIC,
697 :
698 : /**
699 : * Get Commands Supported and Effects log page for the Zoned Namespace Command Set.
700 : */
701 : NVME_CTRLR_STATE_GET_ZNS_CMD_EFFECTS_LOG,
702 :
703 : /**
704 : * Waiting for the Get Log Page command to be completed.
705 : */
706 : NVME_CTRLR_STATE_WAIT_FOR_GET_ZNS_CMD_EFFECTS_LOG,
707 :
708 : /**
709 : * Set Number of Queues of the controller.
710 : */
711 : NVME_CTRLR_STATE_SET_NUM_QUEUES,
712 :
713 : /**
714 : * Waiting for Set Num of Queues command to be completed.
715 : */
716 : NVME_CTRLR_STATE_WAIT_FOR_SET_NUM_QUEUES,
717 :
718 : /**
719 : * Get active Namespace list of the controller.
720 : */
721 : NVME_CTRLR_STATE_IDENTIFY_ACTIVE_NS,
722 :
723 : /**
724 : * Waiting for the Identify Active Namespace commands to be completed.
725 : */
726 : NVME_CTRLR_STATE_WAIT_FOR_IDENTIFY_ACTIVE_NS,
727 :
728 : /**
729 : * Get Identify Namespace Data structure for each NS.
730 : */
731 : NVME_CTRLR_STATE_IDENTIFY_NS,
732 :
733 : /**
734 : * Waiting for the Identify Namespace commands to be completed.
735 : */
736 : NVME_CTRLR_STATE_WAIT_FOR_IDENTIFY_NS,
737 :
738 : /**
739 : * Get Identify Namespace Identification Descriptors.
740 : */
741 : NVME_CTRLR_STATE_IDENTIFY_ID_DESCS,
742 :
743 : /**
744 : * Get Identify I/O Command Set Specific Namespace data structure for each NS.
745 : */
746 : NVME_CTRLR_STATE_IDENTIFY_NS_IOCS_SPECIFIC,
747 :
748 : /**
749 : * Waiting for the Identify I/O Command Set Specific Namespace commands to be completed.
750 : */
751 : NVME_CTRLR_STATE_WAIT_FOR_IDENTIFY_NS_IOCS_SPECIFIC,
752 :
753 : /**
754 : * Waiting for the Identify Namespace Identification
755 : * Descriptors to be completed.
756 : */
757 : NVME_CTRLR_STATE_WAIT_FOR_IDENTIFY_ID_DESCS,
758 :
759 : /**
760 : * Set supported log pages of the controller.
761 : */
762 : NVME_CTRLR_STATE_SET_SUPPORTED_LOG_PAGES,
763 :
764 : /**
765 : * Set supported log pages of INTEL controller.
766 : */
767 : NVME_CTRLR_STATE_SET_SUPPORTED_INTEL_LOG_PAGES,
768 :
769 : /**
770 : * Waiting for supported log pages of INTEL controller.
771 : */
772 : NVME_CTRLR_STATE_WAIT_FOR_SUPPORTED_INTEL_LOG_PAGES,
773 :
774 : /**
775 : * Set supported features of the controller.
776 : */
777 : NVME_CTRLR_STATE_SET_SUPPORTED_FEATURES,
778 :
779 : /**
780 : * Set Doorbell Buffer Config of the controller.
781 : */
782 : NVME_CTRLR_STATE_SET_DB_BUF_CFG,
783 :
784 : /**
785 : * Waiting for Doorbell Buffer Config to be completed.
786 : */
787 : NVME_CTRLR_STATE_WAIT_FOR_DB_BUF_CFG,
788 :
789 : /**
790 : * Set Host ID of the controller.
791 : */
792 : NVME_CTRLR_STATE_SET_HOST_ID,
793 :
794 : /**
795 : * Waiting for Set Host ID to be completed.
796 : */
797 : NVME_CTRLR_STATE_WAIT_FOR_HOST_ID,
798 :
799 : /**
800 : * Let transport layer do its part of initialization.
801 : */
802 : NVME_CTRLR_STATE_TRANSPORT_READY,
803 :
804 : /**
805 : * Controller initialization has completed and the controller is ready.
806 : */
807 : NVME_CTRLR_STATE_READY,
808 :
809 : /**
810 : * Controller initialization has an error.
811 : */
812 : NVME_CTRLR_STATE_ERROR,
813 :
814 : /**
815 : * Admin qpair was disconnected, controller needs to be re-initialized
816 : */
817 : NVME_CTRLR_STATE_DISCONNECTED,
818 : };
819 :
820 : #define NVME_TIMEOUT_INFINITE 0
821 : #define NVME_TIMEOUT_KEEP_EXISTING UINT64_MAX
822 :
823 : struct spdk_nvme_ctrlr_aer_completion_list {
824 : struct spdk_nvme_cpl cpl;
825 : STAILQ_ENTRY(spdk_nvme_ctrlr_aer_completion_list) link;
826 : };
827 :
828 : /*
829 : * Used to track properties for all processes accessing the controller.
830 : */
831 : struct spdk_nvme_ctrlr_process {
832 : /** Whether it is the primary process */
833 : bool is_primary;
834 :
835 : /** Process ID */
836 : pid_t pid;
837 :
838 : /** Active admin requests to be completed */
839 : STAILQ_HEAD(, nvme_request) active_reqs;
840 :
841 : TAILQ_ENTRY(spdk_nvme_ctrlr_process) tailq;
842 :
843 : /** Per process PCI device handle */
844 : struct spdk_pci_device *devhandle;
845 :
846 : /** Reference to track the number of attachment to this controller. */
847 : int ref;
848 :
849 : /** Allocated IO qpairs */
850 : TAILQ_HEAD(, spdk_nvme_qpair) allocated_io_qpairs;
851 :
852 : spdk_nvme_aer_cb aer_cb_fn;
853 : void *aer_cb_arg;
854 :
855 : /**
856 : * A function pointer to timeout callback function
857 : */
858 : spdk_nvme_timeout_cb timeout_cb_fn;
859 : void *timeout_cb_arg;
860 : /** separate timeout values for io vs. admin reqs */
861 : uint64_t timeout_io_ticks;
862 : uint64_t timeout_admin_ticks;
863 :
864 : /** List to publish AENs to all procs in multiprocess setup */
865 : STAILQ_HEAD(, spdk_nvme_ctrlr_aer_completion_list) async_events;
866 : };
867 :
868 : struct nvme_register_completion {
869 : struct spdk_nvme_cpl cpl;
870 : uint64_t value;
871 : spdk_nvme_reg_cb cb_fn;
872 : void *cb_ctx;
873 : STAILQ_ENTRY(nvme_register_completion) stailq;
874 : pid_t pid;
875 : };
876 :
877 : struct spdk_nvme_ctrlr {
878 : /* Hot data (accessed in I/O path) starts here. */
879 :
880 : /* Tree of namespaces */
881 : RB_HEAD(nvme_ns_tree, spdk_nvme_ns) ns;
882 :
883 : /* The number of active namespaces */
884 : uint32_t active_ns_count;
885 :
886 : bool is_removed;
887 :
888 : bool is_resetting;
889 :
890 : bool is_failed;
891 :
892 : bool is_destructed;
893 :
894 : bool timeout_enabled;
895 :
896 : /* The application is preparing to reset the controller. Transports
897 : * can use this to skip unnecessary parts of the qpair deletion process
898 : * for example, like the DELETE_SQ/CQ commands.
899 : */
900 : bool prepare_for_reset;
901 :
902 : bool is_disconnecting;
903 :
904 : bool needs_io_msg_update;
905 :
906 : uint16_t max_sges;
907 :
908 : uint16_t cntlid;
909 :
910 : /** Controller support flags */
911 : uint64_t flags;
912 :
913 : /** NVMEoF in-capsule data size in bytes */
914 : uint32_t ioccsz_bytes;
915 :
916 : /** NVMEoF in-capsule data offset in 16 byte units */
917 : uint16_t icdoff;
918 :
919 : /* Cold data (not accessed in normal I/O path) is after this point. */
920 :
921 : struct spdk_nvme_transport_id trid;
922 :
923 : union spdk_nvme_cap_register cap;
924 : union spdk_nvme_vs_register vs;
925 :
926 : int state;
927 : uint64_t state_timeout_tsc;
928 :
929 : uint64_t next_keep_alive_tick;
930 : uint64_t keep_alive_interval_ticks;
931 :
932 : TAILQ_ENTRY(spdk_nvme_ctrlr) tailq;
933 :
934 : /** All the log pages supported */
935 : bool log_page_supported[256];
936 :
937 : /** All the features supported */
938 : bool feature_supported[256];
939 :
940 : /** maximum i/o size in bytes */
941 : uint32_t max_xfer_size;
942 :
943 : /** minimum page size supported by this controller in bytes */
944 : uint32_t min_page_size;
945 :
946 : /** selected memory page size for this controller in bytes */
947 : uint32_t page_size;
948 :
949 : uint32_t num_aers;
950 : struct nvme_async_event_request aer[NVME_MAX_ASYNC_EVENTS];
951 :
952 : /** guards access to the controller itself, including admin queues */
953 : pthread_mutex_t ctrlr_lock;
954 :
955 : struct spdk_nvme_qpair *adminq;
956 :
957 : /** shadow doorbell buffer */
958 : uint32_t *shadow_doorbell;
959 : /** eventidx buffer */
960 : uint32_t *eventidx;
961 :
962 : /**
963 : * Identify Controller data.
964 : */
965 : struct spdk_nvme_ctrlr_data cdata;
966 :
967 : /**
968 : * Zoned Namespace Command Set Specific Identify Controller data.
969 : */
970 : struct spdk_nvme_zns_ctrlr_data *cdata_zns;
971 :
972 : struct spdk_bit_array *free_io_qids;
973 : TAILQ_HEAD(, spdk_nvme_qpair) active_io_qpairs;
974 :
975 : struct spdk_nvme_ctrlr_opts opts;
976 :
977 : uint64_t quirks;
978 :
979 : /* Extra sleep time during controller initialization */
980 : uint64_t sleep_timeout_tsc;
981 :
982 : /** Track all the processes manage this controller */
983 : TAILQ_HEAD(, spdk_nvme_ctrlr_process) active_procs;
984 :
985 :
986 : STAILQ_HEAD(, nvme_request) queued_aborts;
987 : uint32_t outstanding_aborts;
988 :
989 : uint32_t lock_depth;
990 :
991 : /* CB to notify the user when the ctrlr is removed/failed. */
992 : spdk_nvme_remove_cb remove_cb;
993 : void *cb_ctx;
994 :
995 : struct spdk_nvme_qpair *external_io_msgs_qpair;
996 : pthread_mutex_t external_io_msgs_lock;
997 : struct spdk_ring *external_io_msgs;
998 :
999 : STAILQ_HEAD(, nvme_io_msg_producer) io_producers;
1000 :
1001 : struct spdk_nvme_ana_page *ana_log_page;
1002 : struct spdk_nvme_ana_group_descriptor *copied_ana_desc;
1003 : uint32_t ana_log_page_size;
1004 :
1005 : /* scratchpad pointer that can be used to send data between two NVME_CTRLR_STATEs */
1006 : void *tmp_ptr;
1007 :
1008 : /* maximum zone append size in bytes */
1009 : uint32_t max_zone_append_size;
1010 :
1011 : /* PMR size in bytes */
1012 : uint64_t pmr_size;
1013 :
1014 : /* Boot Partition Info */
1015 : enum nvme_bp_write_state bp_ws;
1016 : uint32_t bpid;
1017 : spdk_nvme_cmd_cb bp_write_cb_fn;
1018 : void *bp_write_cb_arg;
1019 :
1020 : /* Firmware Download */
1021 : void *fw_payload;
1022 : unsigned int fw_size_remaining;
1023 : unsigned int fw_offset;
1024 : unsigned int fw_transfer_size;
1025 :
1026 : /* Completed register operations */
1027 : STAILQ_HEAD(, nvme_register_completion) register_operations;
1028 :
1029 : union spdk_nvme_cc_register process_init_cc;
1030 : };
1031 :
1032 : struct spdk_nvme_probe_ctx {
1033 : struct spdk_nvme_transport_id trid;
1034 : void *cb_ctx;
1035 : spdk_nvme_probe_cb probe_cb;
1036 : spdk_nvme_attach_cb attach_cb;
1037 : spdk_nvme_remove_cb remove_cb;
1038 : TAILQ_HEAD(, spdk_nvme_ctrlr) init_ctrlrs;
1039 : };
1040 :
1041 : typedef void (*nvme_ctrlr_detach_cb)(struct spdk_nvme_ctrlr *ctrlr);
1042 :
1043 : enum nvme_ctrlr_detach_state {
1044 : NVME_CTRLR_DETACH_SET_CC,
1045 : NVME_CTRLR_DETACH_CHECK_CSTS,
1046 : NVME_CTRLR_DETACH_GET_CSTS,
1047 : NVME_CTRLR_DETACH_GET_CSTS_DONE,
1048 : };
1049 :
1050 : struct nvme_ctrlr_detach_ctx {
1051 : struct spdk_nvme_ctrlr *ctrlr;
1052 : nvme_ctrlr_detach_cb cb_fn;
1053 : uint64_t shutdown_start_tsc;
1054 : uint32_t shutdown_timeout_ms;
1055 : bool shutdown_complete;
1056 : enum nvme_ctrlr_detach_state state;
1057 : union spdk_nvme_csts_register csts;
1058 : TAILQ_ENTRY(nvme_ctrlr_detach_ctx) link;
1059 : };
1060 :
1061 : struct spdk_nvme_detach_ctx {
1062 : TAILQ_HEAD(, nvme_ctrlr_detach_ctx) head;
1063 : };
1064 :
1065 : struct nvme_driver {
1066 : pthread_mutex_t lock;
1067 :
1068 : /** Multi-process shared attached controller list */
1069 : TAILQ_HEAD(, spdk_nvme_ctrlr) shared_attached_ctrlrs;
1070 :
1071 : bool initialized;
1072 : struct spdk_uuid default_extended_host_id;
1073 :
1074 : /** netlink socket fd for hotplug messages */
1075 : int hotplug_fd;
1076 : };
1077 :
1078 : #define nvme_ns_cmd_get_ext_io_opt(opts, field, defval) \
1079 : ((opts) != NULL && offsetof(struct spdk_nvme_ns_cmd_ext_io_opts, field) + \
1080 : sizeof((opts)->field) <= (opts)->size ? (opts)->field : (defval))
1081 :
1082 : extern struct nvme_driver *g_spdk_nvme_driver;
1083 :
1084 : int nvme_driver_init(void);
1085 :
1086 : #define nvme_delay usleep
1087 :
1088 : static inline bool
1089 70 : nvme_qpair_is_admin_queue(struct spdk_nvme_qpair *qpair)
1090 : {
1091 70 : return qpair->id == 0;
1092 : }
1093 :
1094 : static inline bool
1095 : nvme_qpair_is_io_queue(struct spdk_nvme_qpair *qpair)
1096 : {
1097 : return qpair->id != 0;
1098 : }
1099 :
1100 : static inline int
1101 12677 : nvme_robust_mutex_lock(pthread_mutex_t *mtx)
1102 : {
1103 12677 : int rc = pthread_mutex_lock(mtx);
1104 :
1105 : #ifndef __FreeBSD__
1106 12677 : if (rc == EOWNERDEAD) {
1107 0 : rc = pthread_mutex_consistent(mtx);
1108 : }
1109 : #endif
1110 :
1111 12677 : return rc;
1112 : }
1113 :
1114 : static inline int
1115 12609 : nvme_ctrlr_lock(struct spdk_nvme_ctrlr *ctrlr)
1116 : {
1117 : int rc;
1118 :
1119 12609 : rc = nvme_robust_mutex_lock(&ctrlr->ctrlr_lock);
1120 12609 : ctrlr->lock_depth++;
1121 12609 : return rc;
1122 : }
1123 :
1124 : static inline int
1125 12675 : nvme_robust_mutex_unlock(pthread_mutex_t *mtx)
1126 : {
1127 12675 : return pthread_mutex_unlock(mtx);
1128 : }
1129 :
1130 : static inline int
1131 12607 : nvme_ctrlr_unlock(struct spdk_nvme_ctrlr *ctrlr)
1132 : {
1133 12607 : ctrlr->lock_depth--;
1134 12607 : return nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
1135 : }
1136 :
1137 : /* Poll group management functions. */
1138 : int nvme_poll_group_connect_qpair(struct spdk_nvme_qpair *qpair);
1139 : int nvme_poll_group_disconnect_qpair(struct spdk_nvme_qpair *qpair);
1140 :
1141 : /* Admin functions */
1142 : int nvme_ctrlr_cmd_identify(struct spdk_nvme_ctrlr *ctrlr,
1143 : uint8_t cns, uint16_t cntid, uint32_t nsid,
1144 : uint8_t csi, void *payload, size_t payload_size,
1145 : spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1146 : int nvme_ctrlr_cmd_set_num_queues(struct spdk_nvme_ctrlr *ctrlr,
1147 : uint32_t num_queues, spdk_nvme_cmd_cb cb_fn,
1148 : void *cb_arg);
1149 : int nvme_ctrlr_cmd_get_num_queues(struct spdk_nvme_ctrlr *ctrlr,
1150 : spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1151 : int nvme_ctrlr_cmd_set_async_event_config(struct spdk_nvme_ctrlr *ctrlr,
1152 : union spdk_nvme_feat_async_event_configuration config,
1153 : spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1154 : int nvme_ctrlr_cmd_set_host_id(struct spdk_nvme_ctrlr *ctrlr, void *host_id, uint32_t host_id_size,
1155 : spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1156 : int nvme_ctrlr_cmd_attach_ns(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid,
1157 : struct spdk_nvme_ctrlr_list *payload, spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1158 : int nvme_ctrlr_cmd_detach_ns(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid,
1159 : struct spdk_nvme_ctrlr_list *payload, spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1160 : int nvme_ctrlr_cmd_create_ns(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_ns_data *payload,
1161 : spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1162 : int nvme_ctrlr_cmd_doorbell_buffer_config(struct spdk_nvme_ctrlr *ctrlr,
1163 : uint64_t prp1, uint64_t prp2,
1164 : spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1165 : int nvme_ctrlr_cmd_delete_ns(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid, spdk_nvme_cmd_cb cb_fn,
1166 : void *cb_arg);
1167 : int nvme_ctrlr_cmd_format(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid,
1168 : struct spdk_nvme_format *format, spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1169 : int nvme_ctrlr_cmd_fw_commit(struct spdk_nvme_ctrlr *ctrlr,
1170 : const struct spdk_nvme_fw_commit *fw_commit,
1171 : spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1172 : int nvme_ctrlr_cmd_fw_image_download(struct spdk_nvme_ctrlr *ctrlr,
1173 : uint32_t size, uint32_t offset, void *payload,
1174 : spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1175 : int nvme_ctrlr_cmd_sanitize(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid,
1176 : struct spdk_nvme_sanitize *sanitize, uint32_t cdw11,
1177 : spdk_nvme_cmd_cb cb_fn, void *cb_arg);
1178 : void nvme_completion_poll_cb(void *arg, const struct spdk_nvme_cpl *cpl);
1179 : int nvme_wait_for_completion(struct spdk_nvme_qpair *qpair,
1180 : struct nvme_completion_poll_status *status);
1181 : int nvme_wait_for_completion_robust_lock(struct spdk_nvme_qpair *qpair,
1182 : struct nvme_completion_poll_status *status,
1183 : pthread_mutex_t *robust_mutex);
1184 : int nvme_wait_for_completion_timeout(struct spdk_nvme_qpair *qpair,
1185 : struct nvme_completion_poll_status *status,
1186 : uint64_t timeout_in_usecs);
1187 : int nvme_wait_for_completion_robust_lock_timeout(struct spdk_nvme_qpair *qpair,
1188 : struct nvme_completion_poll_status *status,
1189 : pthread_mutex_t *robust_mutex,
1190 : uint64_t timeout_in_usecs);
1191 : int nvme_wait_for_completion_robust_lock_timeout_poll(struct spdk_nvme_qpair *qpair,
1192 : struct nvme_completion_poll_status *status,
1193 : pthread_mutex_t *robust_mutex);
1194 :
1195 : struct spdk_nvme_ctrlr_process *nvme_ctrlr_get_process(struct spdk_nvme_ctrlr *ctrlr,
1196 : pid_t pid);
1197 : struct spdk_nvme_ctrlr_process *nvme_ctrlr_get_current_process(struct spdk_nvme_ctrlr *ctrlr);
1198 : int nvme_ctrlr_add_process(struct spdk_nvme_ctrlr *ctrlr, void *devhandle);
1199 : void nvme_ctrlr_free_processes(struct spdk_nvme_ctrlr *ctrlr);
1200 : struct spdk_pci_device *nvme_ctrlr_proc_get_devhandle(struct spdk_nvme_ctrlr *ctrlr);
1201 :
1202 : int nvme_ctrlr_probe(const struct spdk_nvme_transport_id *trid,
1203 : struct spdk_nvme_probe_ctx *probe_ctx, void *devhandle);
1204 :
1205 : int nvme_ctrlr_construct(struct spdk_nvme_ctrlr *ctrlr);
1206 : void nvme_ctrlr_destruct_finish(struct spdk_nvme_ctrlr *ctrlr);
1207 : void nvme_ctrlr_destruct(struct spdk_nvme_ctrlr *ctrlr);
1208 : void nvme_ctrlr_destruct_async(struct spdk_nvme_ctrlr *ctrlr,
1209 : struct nvme_ctrlr_detach_ctx *ctx);
1210 : int nvme_ctrlr_destruct_poll_async(struct spdk_nvme_ctrlr *ctrlr,
1211 : struct nvme_ctrlr_detach_ctx *ctx);
1212 : void nvme_ctrlr_fail(struct spdk_nvme_ctrlr *ctrlr, bool hot_remove);
1213 : int nvme_ctrlr_process_init(struct spdk_nvme_ctrlr *ctrlr);
1214 : void nvme_ctrlr_disable(struct spdk_nvme_ctrlr *ctrlr);
1215 : int nvme_ctrlr_disable_poll(struct spdk_nvme_ctrlr *ctrlr);
1216 : void nvme_ctrlr_connected(struct spdk_nvme_probe_ctx *probe_ctx,
1217 : struct spdk_nvme_ctrlr *ctrlr);
1218 :
1219 : int nvme_ctrlr_submit_admin_request(struct spdk_nvme_ctrlr *ctrlr,
1220 : struct nvme_request *req);
1221 : int nvme_ctrlr_get_cap(struct spdk_nvme_ctrlr *ctrlr, union spdk_nvme_cap_register *cap);
1222 : int nvme_ctrlr_get_vs(struct spdk_nvme_ctrlr *ctrlr, union spdk_nvme_vs_register *vs);
1223 : int nvme_ctrlr_get_cmbsz(struct spdk_nvme_ctrlr *ctrlr, union spdk_nvme_cmbsz_register *cmbsz);
1224 : int nvme_ctrlr_get_pmrcap(struct spdk_nvme_ctrlr *ctrlr, union spdk_nvme_pmrcap_register *pmrcap);
1225 : int nvme_ctrlr_get_bpinfo(struct spdk_nvme_ctrlr *ctrlr, union spdk_nvme_bpinfo_register *bpinfo);
1226 : int nvme_ctrlr_set_bprsel(struct spdk_nvme_ctrlr *ctrlr, union spdk_nvme_bprsel_register *bprsel);
1227 : int nvme_ctrlr_set_bpmbl(struct spdk_nvme_ctrlr *ctrlr, uint64_t bpmbl_value);
1228 : bool nvme_ctrlr_multi_iocs_enabled(struct spdk_nvme_ctrlr *ctrlr);
1229 : void nvme_ctrlr_process_async_event(struct spdk_nvme_ctrlr *ctrlr,
1230 : const struct spdk_nvme_cpl *cpl);
1231 : void nvme_ctrlr_disconnect_qpair(struct spdk_nvme_qpair *qpair);
1232 : void nvme_ctrlr_complete_queued_async_events(struct spdk_nvme_ctrlr *ctrlr);
1233 : void nvme_ctrlr_abort_queued_aborts(struct spdk_nvme_ctrlr *ctrlr);
1234 : int nvme_qpair_init(struct spdk_nvme_qpair *qpair, uint16_t id,
1235 : struct spdk_nvme_ctrlr *ctrlr,
1236 : enum spdk_nvme_qprio qprio,
1237 : uint32_t num_requests, bool async);
1238 : void nvme_qpair_deinit(struct spdk_nvme_qpair *qpair);
1239 : void nvme_qpair_complete_error_reqs(struct spdk_nvme_qpair *qpair);
1240 : int nvme_qpair_submit_request(struct spdk_nvme_qpair *qpair,
1241 : struct nvme_request *req);
1242 : void nvme_qpair_abort_all_queued_reqs(struct spdk_nvme_qpair *qpair);
1243 : uint32_t nvme_qpair_abort_queued_reqs_with_cbarg(struct spdk_nvme_qpair *qpair, void *cmd_cb_arg);
1244 : void nvme_qpair_abort_queued_reqs(struct spdk_nvme_qpair *qpair);
1245 : void nvme_qpair_resubmit_requests(struct spdk_nvme_qpair *qpair, uint32_t num_requests);
1246 : int nvme_ctrlr_identify_active_ns(struct spdk_nvme_ctrlr *ctrlr);
1247 : void nvme_ns_set_identify_data(struct spdk_nvme_ns *ns);
1248 : void nvme_ns_set_id_desc_list_data(struct spdk_nvme_ns *ns);
1249 : void nvme_ns_free_zns_specific_data(struct spdk_nvme_ns *ns);
1250 : void nvme_ns_free_iocs_specific_data(struct spdk_nvme_ns *ns);
1251 : bool nvme_ns_has_supported_iocs_specific_data(struct spdk_nvme_ns *ns);
1252 : int nvme_ns_construct(struct spdk_nvme_ns *ns, uint32_t id,
1253 : struct spdk_nvme_ctrlr *ctrlr);
1254 : void nvme_ns_destruct(struct spdk_nvme_ns *ns);
1255 : int nvme_ns_cmd_zone_append_with_md(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
1256 : void *buffer, void *metadata, uint64_t zslba,
1257 : uint32_t lba_count, spdk_nvme_cmd_cb cb_fn, void *cb_arg,
1258 : uint32_t io_flags, uint16_t apptag_mask, uint16_t apptag);
1259 : int nvme_ns_cmd_zone_appendv_with_md(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
1260 : uint64_t zslba, uint32_t lba_count,
1261 : spdk_nvme_cmd_cb cb_fn, void *cb_arg, uint32_t io_flags,
1262 : spdk_nvme_req_reset_sgl_cb reset_sgl_fn,
1263 : spdk_nvme_req_next_sge_cb next_sge_fn, void *metadata,
1264 : uint16_t apptag_mask, uint16_t apptag);
1265 :
1266 : int nvme_fabric_ctrlr_set_reg_4(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint32_t value);
1267 : int nvme_fabric_ctrlr_set_reg_8(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint64_t value);
1268 : int nvme_fabric_ctrlr_get_reg_4(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint32_t *value);
1269 : int nvme_fabric_ctrlr_get_reg_8(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint64_t *value);
1270 : int nvme_fabric_ctrlr_set_reg_4_async(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset,
1271 : uint32_t value, spdk_nvme_reg_cb cb_fn, void *cb_arg);
1272 : int nvme_fabric_ctrlr_set_reg_8_async(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset,
1273 : uint64_t value, spdk_nvme_reg_cb cb_fn, void *cb_arg);
1274 : int nvme_fabric_ctrlr_get_reg_4_async(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset,
1275 : spdk_nvme_reg_cb cb_fn, void *cb_arg);
1276 : int nvme_fabric_ctrlr_get_reg_8_async(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset,
1277 : spdk_nvme_reg_cb cb_fn, void *cb_arg);
1278 : int nvme_fabric_ctrlr_scan(struct spdk_nvme_probe_ctx *probe_ctx, bool direct_connect);
1279 : int nvme_fabric_ctrlr_discover(struct spdk_nvme_ctrlr *ctrlr,
1280 : struct spdk_nvme_probe_ctx *probe_ctx);
1281 : int nvme_fabric_qpair_connect(struct spdk_nvme_qpair *qpair, uint32_t num_entries);
1282 : int nvme_fabric_qpair_connect_async(struct spdk_nvme_qpair *qpair, uint32_t num_entries);
1283 : int nvme_fabric_qpair_connect_poll(struct spdk_nvme_qpair *qpair);
1284 :
1285 : typedef int (*spdk_nvme_parse_ana_log_page_cb)(
1286 : const struct spdk_nvme_ana_group_descriptor *desc, void *cb_arg);
1287 : int nvme_ctrlr_parse_ana_log_page(struct spdk_nvme_ctrlr *ctrlr,
1288 : spdk_nvme_parse_ana_log_page_cb cb_fn, void *cb_arg);
1289 :
1290 : #define NVME_INIT_REQUEST(req, _cb_fn, _cb_arg, _payload, _payload_size, _md_size) \
1291 : do { \
1292 : req->cb_fn = _cb_fn; \
1293 : req->cb_arg = _cb_arg; \
1294 : req->payload = _payload; \
1295 : req->payload_size = _payload_size; \
1296 : req->md_size = _md_size; \
1297 : req->pid = g_spdk_nvme_pid; \
1298 : req->submit_tick = 0; \
1299 : req->accel_sequence = NULL; \
1300 : } while (0);
1301 :
1302 : static inline struct nvme_request *
1303 229 : nvme_allocate_request(struct spdk_nvme_qpair *qpair,
1304 : const struct nvme_payload *payload, uint32_t payload_size, uint32_t md_size,
1305 : spdk_nvme_cmd_cb cb_fn, void *cb_arg)
1306 : {
1307 : struct nvme_request *req;
1308 :
1309 229 : req = STAILQ_FIRST(&qpair->free_req);
1310 229 : if (req == NULL) {
1311 14 : return req;
1312 : }
1313 :
1314 215 : STAILQ_REMOVE_HEAD(&qpair->free_req, stailq);
1315 215 : qpair->num_outstanding_reqs++;
1316 :
1317 : /*
1318 : * Only memset/zero fields that need it. All other fields
1319 : * will be initialized appropriately either later in this
1320 : * function, or before they are needed later in the
1321 : * submission patch. For example, the children
1322 : * TAILQ_ENTRY and following members are
1323 : * only used as part of I/O splitting so we avoid
1324 : * memsetting them until it is actually needed.
1325 : * They will be initialized in nvme_request_add_child()
1326 : * if the request is split.
1327 : */
1328 215 : memset(req, 0, offsetof(struct nvme_request, payload_size));
1329 :
1330 215 : NVME_INIT_REQUEST(req, cb_fn, cb_arg, *payload, payload_size, md_size);
1331 :
1332 215 : return req;
1333 : }
1334 :
1335 : static inline struct nvme_request *
1336 118 : nvme_allocate_request_contig(struct spdk_nvme_qpair *qpair,
1337 : void *buffer, uint32_t payload_size,
1338 : spdk_nvme_cmd_cb cb_fn, void *cb_arg)
1339 : {
1340 118 : struct nvme_payload payload;
1341 :
1342 118 : payload = NVME_PAYLOAD_CONTIG(buffer, NULL);
1343 :
1344 118 : return nvme_allocate_request(qpair, &payload, payload_size, 0, cb_fn, cb_arg);
1345 : }
1346 :
1347 : static inline struct nvme_request *
1348 76 : nvme_allocate_request_null(struct spdk_nvme_qpair *qpair, spdk_nvme_cmd_cb cb_fn, void *cb_arg)
1349 : {
1350 76 : return nvme_allocate_request_contig(qpair, NULL, 0, cb_fn, cb_arg);
1351 : }
1352 :
1353 : struct nvme_request *nvme_allocate_request_user_copy(struct spdk_nvme_qpair *qpair,
1354 : void *buffer, uint32_t payload_size,
1355 : spdk_nvme_cmd_cb cb_fn, void *cb_arg, bool host_to_controller);
1356 :
1357 : static inline void
1358 156 : _nvme_free_request(struct nvme_request *req, struct spdk_nvme_qpair *qpair)
1359 : {
1360 156 : assert(req != NULL);
1361 156 : assert(req->num_children == 0);
1362 156 : assert(qpair != NULL);
1363 :
1364 : /* The reserved_req does not go in the free_req STAILQ - it is
1365 : * saved only for use with a FABRICS/CONNECT command.
1366 : */
1367 156 : if (spdk_likely(qpair->reserved_req != req)) {
1368 156 : STAILQ_INSERT_HEAD(&qpair->free_req, req, stailq);
1369 :
1370 156 : assert(qpair->num_outstanding_reqs > 0);
1371 156 : qpair->num_outstanding_reqs--;
1372 : }
1373 156 : }
1374 :
1375 : static inline void
1376 140 : nvme_free_request(struct nvme_request *req)
1377 : {
1378 140 : _nvme_free_request(req, req->qpair);
1379 140 : }
1380 :
1381 : static inline void
1382 16 : nvme_complete_request(spdk_nvme_cmd_cb cb_fn, void *cb_arg, struct spdk_nvme_qpair *qpair,
1383 : struct nvme_request *req, struct spdk_nvme_cpl *cpl)
1384 : {
1385 16 : struct spdk_nvme_cpl err_cpl;
1386 : struct nvme_error_cmd *cmd;
1387 :
1388 16 : if (spdk_unlikely(req->accel_sequence != NULL)) {
1389 0 : struct spdk_nvme_poll_group *pg = qpair->poll_group->group;
1390 :
1391 : /* Transports are required to execuete the sequence and clear req->accel_sequence.
1392 : * If it's left non-NULL it must mean the request is failed. */
1393 0 : assert(spdk_nvme_cpl_is_error(cpl));
1394 0 : pg->accel_fn_table.abort_sequence(req->accel_sequence);
1395 0 : req->accel_sequence = NULL;
1396 : }
1397 :
1398 : /* error injection at completion path,
1399 : * only inject for successful completed commands
1400 : */
1401 16 : if (spdk_unlikely(!TAILQ_EMPTY(&qpair->err_cmd_head) &&
1402 : !spdk_nvme_cpl_is_error(cpl))) {
1403 2 : TAILQ_FOREACH(cmd, &qpair->err_cmd_head, link) {
1404 :
1405 1 : if (cmd->do_not_submit) {
1406 0 : continue;
1407 : }
1408 :
1409 1 : if ((cmd->opc == req->cmd.opc) && cmd->err_count) {
1410 :
1411 0 : err_cpl = *cpl;
1412 0 : err_cpl.status.sct = cmd->status.sct;
1413 0 : err_cpl.status.sc = cmd->status.sc;
1414 :
1415 0 : cpl = &err_cpl;
1416 0 : cmd->err_count--;
1417 0 : break;
1418 : }
1419 : }
1420 : }
1421 :
1422 : /* For PCIe completions, we want to avoid touching the req itself to avoid
1423 : * dependencies on loading those cachelines. So call the internal helper
1424 : * function instead using the qpair that was passed by the caller, instead
1425 : * of getting it from the req.
1426 : */
1427 16 : _nvme_free_request(req, qpair);
1428 :
1429 16 : if (spdk_likely(cb_fn)) {
1430 15 : cb_fn(cb_arg, cpl);
1431 : }
1432 16 : }
1433 :
1434 : static inline void
1435 6 : nvme_cleanup_user_req(struct nvme_request *req)
1436 : {
1437 6 : if (req->user_buffer && req->payload_size) {
1438 2 : spdk_free(req->payload.contig_or_cb_arg);
1439 2 : req->user_buffer = NULL;
1440 : }
1441 :
1442 6 : req->user_cb_arg = NULL;
1443 6 : req->user_cb_fn = NULL;
1444 6 : }
1445 :
1446 : static inline void
1447 42 : nvme_qpair_set_state(struct spdk_nvme_qpair *qpair, enum nvme_qpair_state state)
1448 : {
1449 42 : qpair->state = state;
1450 42 : if (state == NVME_QPAIR_ENABLED) {
1451 24 : qpair->is_new_qpair = false;
1452 : }
1453 42 : }
1454 :
1455 : static inline enum nvme_qpair_state
1456 134 : nvme_qpair_get_state(struct spdk_nvme_qpair *qpair) {
1457 134 : return qpair->state;
1458 : }
1459 :
1460 : static inline void
1461 68 : nvme_request_remove_child(struct nvme_request *parent, struct nvme_request *child)
1462 : {
1463 68 : assert(parent != NULL);
1464 68 : assert(child != NULL);
1465 68 : assert(child->parent == parent);
1466 68 : assert(parent->num_children != 0);
1467 :
1468 68 : parent->num_children--;
1469 68 : child->parent = NULL;
1470 68 : TAILQ_REMOVE(&parent->children, child, child_tailq);
1471 68 : }
1472 :
1473 : static inline void
1474 0 : nvme_cb_complete_child(void *child_arg, const struct spdk_nvme_cpl *cpl)
1475 : {
1476 0 : struct nvme_request *child = child_arg;
1477 0 : struct nvme_request *parent = child->parent;
1478 :
1479 0 : nvme_request_remove_child(parent, child);
1480 :
1481 0 : if (spdk_nvme_cpl_is_error(cpl)) {
1482 0 : memcpy(&parent->parent_status, cpl, sizeof(*cpl));
1483 : }
1484 :
1485 0 : if (parent->num_children == 0) {
1486 0 : nvme_complete_request(parent->cb_fn, parent->cb_arg, parent->qpair,
1487 : parent, &parent->parent_status);
1488 : }
1489 0 : }
1490 :
1491 : static inline void
1492 55 : nvme_request_add_child(struct nvme_request *parent, struct nvme_request *child)
1493 : {
1494 55 : assert(parent->num_children != UINT16_MAX);
1495 :
1496 55 : if (parent->num_children == 0) {
1497 : /*
1498 : * Defer initialization of the children TAILQ since it falls
1499 : * on a separate cacheline. This ensures we do not touch this
1500 : * cacheline except on request splitting cases, which are
1501 : * relatively rare.
1502 : */
1503 14 : TAILQ_INIT(&parent->children);
1504 14 : parent->parent = NULL;
1505 14 : memset(&parent->parent_status, 0, sizeof(struct spdk_nvme_cpl));
1506 : }
1507 :
1508 55 : parent->num_children++;
1509 55 : TAILQ_INSERT_TAIL(&parent->children, child, child_tailq);
1510 55 : child->parent = parent;
1511 55 : child->cb_fn = nvme_cb_complete_child;
1512 55 : child->cb_arg = child;
1513 55 : }
1514 :
1515 : static inline void
1516 69 : nvme_request_free_children(struct nvme_request *req)
1517 : {
1518 : struct nvme_request *child, *tmp;
1519 :
1520 69 : if (req->num_children == 0) {
1521 57 : return;
1522 : }
1523 :
1524 : /* free all child nvme_request */
1525 62 : TAILQ_FOREACH_SAFE(child, &req->children, child_tailq, tmp) {
1526 50 : nvme_request_remove_child(req, child);
1527 50 : nvme_request_free_children(child);
1528 50 : nvme_free_request(child);
1529 : }
1530 : }
1531 :
1532 : int nvme_request_check_timeout(struct nvme_request *req, uint16_t cid,
1533 : struct spdk_nvme_ctrlr_process *active_proc, uint64_t now_tick);
1534 : uint64_t nvme_get_quirks(const struct spdk_pci_id *id);
1535 :
1536 : int nvme_robust_mutex_init_shared(pthread_mutex_t *mtx);
1537 : int nvme_robust_mutex_init_recursive_shared(pthread_mutex_t *mtx);
1538 :
1539 : bool nvme_completion_is_retry(const struct spdk_nvme_cpl *cpl);
1540 :
1541 : struct spdk_nvme_ctrlr *nvme_get_ctrlr_by_trid_unsafe(
1542 : const struct spdk_nvme_transport_id *trid);
1543 :
1544 : const struct spdk_nvme_transport *nvme_get_transport(const char *transport_name);
1545 : const struct spdk_nvme_transport *nvme_get_first_transport(void);
1546 : const struct spdk_nvme_transport *nvme_get_next_transport(const struct spdk_nvme_transport
1547 : *transport);
1548 : void nvme_ctrlr_update_namespaces(struct spdk_nvme_ctrlr *ctrlr);
1549 :
1550 : /* Transport specific functions */
1551 : struct spdk_nvme_ctrlr *nvme_transport_ctrlr_construct(const struct spdk_nvme_transport_id *trid,
1552 : const struct spdk_nvme_ctrlr_opts *opts,
1553 : void *devhandle);
1554 : int nvme_transport_ctrlr_destruct(struct spdk_nvme_ctrlr *ctrlr);
1555 : int nvme_transport_ctrlr_scan(struct spdk_nvme_probe_ctx *probe_ctx, bool direct_connect);
1556 : int nvme_transport_ctrlr_enable(struct spdk_nvme_ctrlr *ctrlr);
1557 : int nvme_transport_ctrlr_ready(struct spdk_nvme_ctrlr *ctrlr);
1558 : int nvme_transport_ctrlr_set_reg_4(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint32_t value);
1559 : int nvme_transport_ctrlr_set_reg_8(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint64_t value);
1560 : int nvme_transport_ctrlr_get_reg_4(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint32_t *value);
1561 : int nvme_transport_ctrlr_get_reg_8(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset, uint64_t *value);
1562 : int nvme_transport_ctrlr_set_reg_4_async(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset,
1563 : uint32_t value, spdk_nvme_reg_cb cb_fn, void *cb_arg);
1564 : int nvme_transport_ctrlr_set_reg_8_async(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset,
1565 : uint64_t value, spdk_nvme_reg_cb cb_fn, void *cb_arg);
1566 : int nvme_transport_ctrlr_get_reg_4_async(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset,
1567 : spdk_nvme_reg_cb cb_fn, void *cb_arg);
1568 : int nvme_transport_ctrlr_get_reg_8_async(struct spdk_nvme_ctrlr *ctrlr, uint32_t offset,
1569 : spdk_nvme_reg_cb cb_fn, void *cb_arg);
1570 : uint32_t nvme_transport_ctrlr_get_max_xfer_size(struct spdk_nvme_ctrlr *ctrlr);
1571 : uint16_t nvme_transport_ctrlr_get_max_sges(struct spdk_nvme_ctrlr *ctrlr);
1572 : struct spdk_nvme_qpair *nvme_transport_ctrlr_create_io_qpair(struct spdk_nvme_ctrlr *ctrlr,
1573 : uint16_t qid, const struct spdk_nvme_io_qpair_opts *opts);
1574 : int nvme_transport_ctrlr_reserve_cmb(struct spdk_nvme_ctrlr *ctrlr);
1575 : void *nvme_transport_ctrlr_map_cmb(struct spdk_nvme_ctrlr *ctrlr, size_t *size);
1576 : int nvme_transport_ctrlr_unmap_cmb(struct spdk_nvme_ctrlr *ctrlr);
1577 : int nvme_transport_ctrlr_enable_pmr(struct spdk_nvme_ctrlr *ctrlr);
1578 : int nvme_transport_ctrlr_disable_pmr(struct spdk_nvme_ctrlr *ctrlr);
1579 : void *nvme_transport_ctrlr_map_pmr(struct spdk_nvme_ctrlr *ctrlr, size_t *size);
1580 : int nvme_transport_ctrlr_unmap_pmr(struct spdk_nvme_ctrlr *ctrlr);
1581 : void nvme_transport_ctrlr_delete_io_qpair(struct spdk_nvme_ctrlr *ctrlr,
1582 : struct spdk_nvme_qpair *qpair);
1583 : int nvme_transport_ctrlr_connect_qpair(struct spdk_nvme_ctrlr *ctrlr,
1584 : struct spdk_nvme_qpair *qpair);
1585 : void nvme_transport_ctrlr_disconnect_qpair(struct spdk_nvme_ctrlr *ctrlr,
1586 : struct spdk_nvme_qpair *qpair);
1587 : void nvme_transport_ctrlr_disconnect_qpair_done(struct spdk_nvme_qpair *qpair);
1588 : int nvme_transport_ctrlr_get_memory_domains(const struct spdk_nvme_ctrlr *ctrlr,
1589 : struct spdk_memory_domain **domains, int array_size);
1590 : void nvme_transport_qpair_abort_reqs(struct spdk_nvme_qpair *qpair);
1591 : int nvme_transport_qpair_reset(struct spdk_nvme_qpair *qpair);
1592 : int nvme_transport_qpair_submit_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req);
1593 : int32_t nvme_transport_qpair_process_completions(struct spdk_nvme_qpair *qpair,
1594 : uint32_t max_completions);
1595 : void nvme_transport_admin_qpair_abort_aers(struct spdk_nvme_qpair *qpair);
1596 : int nvme_transport_qpair_iterate_requests(struct spdk_nvme_qpair *qpair,
1597 : int (*iter_fn)(struct nvme_request *req, void *arg),
1598 : void *arg);
1599 :
1600 : struct spdk_nvme_transport_poll_group *nvme_transport_poll_group_create(
1601 : const struct spdk_nvme_transport *transport);
1602 : struct spdk_nvme_transport_poll_group *nvme_transport_qpair_get_optimal_poll_group(
1603 : const struct spdk_nvme_transport *transport,
1604 : struct spdk_nvme_qpair *qpair);
1605 : int nvme_transport_poll_group_add(struct spdk_nvme_transport_poll_group *tgroup,
1606 : struct spdk_nvme_qpair *qpair);
1607 : int nvme_transport_poll_group_remove(struct spdk_nvme_transport_poll_group *tgroup,
1608 : struct spdk_nvme_qpair *qpair);
1609 : int nvme_transport_poll_group_disconnect_qpair(struct spdk_nvme_qpair *qpair);
1610 : int nvme_transport_poll_group_connect_qpair(struct spdk_nvme_qpair *qpair);
1611 : int64_t nvme_transport_poll_group_process_completions(struct spdk_nvme_transport_poll_group *tgroup,
1612 : uint32_t completions_per_qpair, spdk_nvme_disconnected_qpair_cb disconnected_qpair_cb);
1613 : int nvme_transport_poll_group_destroy(struct spdk_nvme_transport_poll_group *tgroup);
1614 : int nvme_transport_poll_group_get_stats(struct spdk_nvme_transport_poll_group *tgroup,
1615 : struct spdk_nvme_transport_poll_group_stat **stats);
1616 : void nvme_transport_poll_group_free_stats(struct spdk_nvme_transport_poll_group *tgroup,
1617 : struct spdk_nvme_transport_poll_group_stat *stats);
1618 : enum spdk_nvme_transport_type nvme_transport_get_trtype(const struct spdk_nvme_transport
1619 : *transport);
1620 : /*
1621 : * Below ref related functions must be called with the global
1622 : * driver lock held for the multi-process condition.
1623 : * Within these functions, the per ctrlr ctrlr_lock is also
1624 : * acquired for the multi-thread condition.
1625 : */
1626 : void nvme_ctrlr_proc_get_ref(struct spdk_nvme_ctrlr *ctrlr);
1627 : void nvme_ctrlr_proc_put_ref(struct spdk_nvme_ctrlr *ctrlr);
1628 : int nvme_ctrlr_get_ref_count(struct spdk_nvme_ctrlr *ctrlr);
1629 :
1630 : int nvme_ctrlr_reinitialize_io_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair);
1631 : int nvme_parse_addr(struct sockaddr_storage *sa, int family,
1632 : const char *addr, const char *service, long int *port);
1633 :
1634 : static inline bool
1635 5 : _is_page_aligned(uint64_t address, uint64_t page_size)
1636 : {
1637 5 : return (address & (page_size - 1)) == 0;
1638 : }
1639 :
1640 : #endif /* __NVME_INTERNAL_H__ */
|