1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Copyright(c) 2020-2021 Intel Corporation. */
5 #include <uapi/linux/cxl_mem.h>
6 #include <linux/cdev.h>
7 #include <linux/uuid.h>
10 /* CXL 2.0 8.2.8.5.1.1 Memory Device Status Register */
11 #define CXLMDEV_STATUS_OFFSET 0x0
12 #define CXLMDEV_DEV_FATAL BIT(0)
13 #define CXLMDEV_FW_HALT BIT(1)
14 #define CXLMDEV_STATUS_MEDIA_STATUS_MASK GENMASK(3, 2)
15 #define CXLMDEV_MS_NOT_READY 0
16 #define CXLMDEV_MS_READY 1
17 #define CXLMDEV_MS_ERROR 2
18 #define CXLMDEV_MS_DISABLED 3
19 #define CXLMDEV_READY(status) \
20 (FIELD_GET(CXLMDEV_STATUS_MEDIA_STATUS_MASK, status) == \
22 #define CXLMDEV_MBOX_IF_READY BIT(4)
23 #define CXLMDEV_RESET_NEEDED_MASK GENMASK(7, 5)
24 #define CXLMDEV_RESET_NEEDED_NOT 0
25 #define CXLMDEV_RESET_NEEDED_COLD 1
26 #define CXLMDEV_RESET_NEEDED_WARM 2
27 #define CXLMDEV_RESET_NEEDED_HOT 3
28 #define CXLMDEV_RESET_NEEDED_CXL 4
29 #define CXLMDEV_RESET_NEEDED(status) \
30 (FIELD_GET(CXLMDEV_RESET_NEEDED_MASK, status) != \
31 CXLMDEV_RESET_NEEDED_NOT)
34 * struct cxl_memdev - CXL bus object representing a Type-3 Memory Device
35 * @dev: driver core device object
36 * @cdev: char dev core object for ioctl operations
37 * @cxlds: The device state backing this device
38 * @detach_work: active memdev lost a port in its ancestry
39 * @cxl_nvb: coordinate removal of @cxl_nvd if present
40 * @cxl_nvd: optional bridge to an nvdimm if the device supports pmem
41 * @id: id number of this memdev instance.
42 * @depth: endpoint port depth
47 struct cxl_dev_state *cxlds;
48 struct work_struct detach_work;
49 struct cxl_nvdimm_bridge *cxl_nvb;
50 struct cxl_nvdimm *cxl_nvd;
55 static inline struct cxl_memdev *to_cxl_memdev(struct device *dev)
57 return container_of(dev, struct cxl_memdev, dev);
60 static inline struct cxl_port *cxled_to_port(struct cxl_endpoint_decoder *cxled)
62 return to_cxl_port(cxled->cxld.dev.parent);
65 static inline struct cxl_port *cxlrd_to_port(struct cxl_root_decoder *cxlrd)
67 return to_cxl_port(cxlrd->cxlsd.cxld.dev.parent);
70 static inline struct cxl_memdev *
71 cxled_to_memdev(struct cxl_endpoint_decoder *cxled)
73 struct cxl_port *port = to_cxl_port(cxled->cxld.dev.parent);
75 return to_cxl_memdev(port->uport);
78 bool is_cxl_memdev(const struct device *dev);
79 static inline bool is_cxl_endpoint(struct cxl_port *port)
81 return is_cxl_memdev(port->uport);
84 struct cxl_memdev *devm_cxl_add_memdev(struct cxl_dev_state *cxlds);
85 int devm_cxl_dpa_reserve(struct cxl_endpoint_decoder *cxled,
86 resource_size_t base, resource_size_t len,
87 resource_size_t skipped);
89 static inline struct cxl_ep *cxl_ep_load(struct cxl_port *port,
90 struct cxl_memdev *cxlmd)
95 return xa_load(&port->endpoints, (unsigned long)&cxlmd->dev);
99 * struct cxl_mbox_cmd - A command to be submitted to hardware.
100 * @opcode: (input) The command set and command submitted to hardware.
101 * @payload_in: (input) Pointer to the input payload.
102 * @payload_out: (output) Pointer to the output payload. Must be allocated by
104 * @size_in: (input) Number of bytes to load from @payload_in.
105 * @size_out: (input) Max number of bytes loaded into @payload_out.
106 * (output) Number of bytes generated by the device. For fixed size
107 * outputs commands this is always expected to be deterministic. For
108 * variable sized output commands, it tells the exact number of bytes
110 * @min_out: (input) internal command output payload size validation
111 * @return_code: (output) Error code returned from hardware.
113 * This is the primary mechanism used to send commands to the hardware.
114 * All the fields except @payload_* correspond exactly to the fields described in
115 * Command Register section of the CXL 2.0 8.2.8.4.5. @payload_in and
116 * @payload_out are written to, and read from the Command Payload Registers
117 * defined in CXL 2.0 8.2.8.4.8.
119 struct cxl_mbox_cmd {
130 * Per CXL 3.0 Section 8.2.8.4.5.1
132 #define CMD_CMD_RC_TABLE \
133 C(SUCCESS, 0, NULL), \
134 C(BACKGROUND, -ENXIO, "background cmd started successfully"), \
135 C(INPUT, -ENXIO, "cmd input was invalid"), \
136 C(UNSUPPORTED, -ENXIO, "cmd is not supported"), \
137 C(INTERNAL, -ENXIO, "internal device error"), \
138 C(RETRY, -ENXIO, "temporary error, retry once"), \
139 C(BUSY, -ENXIO, "ongoing background operation"), \
140 C(MEDIADISABLED, -ENXIO, "media access is disabled"), \
141 C(FWINPROGRESS, -ENXIO, "one FW package can be transferred at a time"), \
142 C(FWOOO, -ENXIO, "FW package content was transferred out of order"), \
143 C(FWAUTH, -ENXIO, "FW package authentication failed"), \
144 C(FWSLOT, -ENXIO, "FW slot is not supported for requested operation"), \
145 C(FWROLLBACK, -ENXIO, "rolled back to the previous active FW"), \
146 C(FWRESET, -ENXIO, "FW failed to activate, needs cold reset"), \
147 C(HANDLE, -ENXIO, "one or more Event Record Handles were invalid"), \
148 C(PADDR, -EFAULT, "physical address specified is invalid"), \
149 C(POISONLMT, -ENXIO, "poison injection limit has been reached"), \
150 C(MEDIAFAILURE, -ENXIO, "permanent issue with the media"), \
151 C(ABORT, -ENXIO, "background cmd was aborted by device"), \
152 C(SECURITY, -ENXIO, "not valid in the current security state"), \
153 C(PASSPHRASE, -ENXIO, "phrase doesn't match current set passphrase"), \
154 C(MBUNSUPPORTED, -ENXIO, "unsupported on the mailbox it was issued on"),\
155 C(PAYLOADLEN, -ENXIO, "invalid payload length"), \
156 C(LOG, -ENXIO, "invalid or unsupported log page"), \
157 C(INTERRUPTED, -ENXIO, "asynchronous event occured"), \
158 C(FEATUREVERSION, -ENXIO, "unsupported feature version"), \
159 C(FEATURESELVALUE, -ENXIO, "unsupported feature selection value"), \
160 C(FEATURETRANSFERIP, -ENXIO, "feature transfer in progress"), \
161 C(FEATURETRANSFEROOO, -ENXIO, "feature transfer out of order"), \
162 C(RESOURCEEXHAUSTED, -ENXIO, "resources are exhausted"), \
163 C(EXTLIST, -ENXIO, "invalid Extent List"), \
166 #define C(a, b, c) CXL_MBOX_CMD_RC_##a
167 enum { CMD_CMD_RC_TABLE };
169 #define C(a, b, c) { b, c }
170 struct cxl_mbox_cmd_rc {
176 struct cxl_mbox_cmd_rc cxl_mbox_cmd_rctable[] ={ CMD_CMD_RC_TABLE };
179 static inline const char *cxl_mbox_cmd_rc2str(struct cxl_mbox_cmd *mbox_cmd)
181 return cxl_mbox_cmd_rctable[mbox_cmd->return_code].desc;
184 static inline int cxl_mbox_cmd_rc2errno(struct cxl_mbox_cmd *mbox_cmd)
186 return cxl_mbox_cmd_rctable[mbox_cmd->return_code].err;
190 * CXL 2.0 - Memory capacity multiplier
191 * See Section 8.2.9.5
193 * Volatile, Persistent, and Partition capacities are specified to be in
194 * multiples of 256MB - define a multiplier to convert to/from bytes.
196 #define CXL_CAPACITY_MULTIPLIER SZ_256M
199 * Event Interrupt Policy
201 * CXL rev 3.0 section 8.2.9.2.4; Table 8-52
203 enum cxl_event_int_mode {
205 CXL_INT_MSI_MSIX = 0x01,
208 struct cxl_event_interrupt_policy {
216 * struct cxl_event_state - Event log driver state
218 * @event_buf: Buffer to receive event data
219 * @event_log_lock: Serialize event_buf and log use
221 struct cxl_event_state {
222 struct cxl_get_event_payload *buf;
223 struct mutex log_lock;
226 /* Device enabled poison commands */
227 enum poison_cmd_enabled_bits {
228 CXL_POISON_ENABLED_LIST,
229 CXL_POISON_ENABLED_INJECT,
230 CXL_POISON_ENABLED_CLEAR,
231 CXL_POISON_ENABLED_SCAN_CAPS,
232 CXL_POISON_ENABLED_SCAN_MEDIA,
233 CXL_POISON_ENABLED_SCAN_RESULTS,
234 CXL_POISON_ENABLED_MAX
238 * struct cxl_poison_state - Driver poison state info
240 * @max_errors: Maximum media error records held in device cache
241 * @enabled_cmds: All poison commands enabled in the CEL
242 * @list_out: The poison list payload returned by device
243 * @lock: Protect reads of the poison list
245 * Reads of the poison list are synchronized to ensure that a reader
246 * does not get an incomplete list because their request overlapped
247 * (was interrupted or preceded by) another read request of the same
248 * DPA range. CXL Spec 3.0 Section 8.2.9.8.4.1
250 struct cxl_poison_state {
252 DECLARE_BITMAP(enabled_cmds, CXL_POISON_ENABLED_MAX);
253 struct cxl_mbox_poison_out *list_out;
254 struct mutex lock; /* Protect reads of poison list */
258 * struct cxl_dev_state - The driver device state
260 * cxl_dev_state represents the CXL driver/device state. It provides an
261 * interface to mailbox commands as well as some cached data about the device.
262 * Currently only memory devices are represented.
264 * @dev: The device associated with this CXL state
265 * @cxlmd: The device representing the CXL.mem capabilities of @dev
266 * @regs: Parsed register blocks
267 * @cxl_dvsec: Offset to the PCIe device DVSEC
268 * @rcd: operating in RCD mode (CXL 3.0 9.11.8 CXL Devices Attached to an RCH)
269 * @payload_size: Size of space for payload
270 * (CXL 2.0 8.2.8.4.3 Mailbox Capabilities Register)
271 * @lsa_size: Size of Label Storage Area
272 * (CXL 2.0 8.2.9.5.1.1 Identify Memory Device)
273 * @mbox_mutex: Mutex to synchronize mailbox access.
274 * @firmware_version: Firmware version for the memory device.
275 * @enabled_cmds: Hardware commands found enabled in CEL.
276 * @exclusive_cmds: Commands that are kernel-internal only
277 * @dpa_res: Overall DPA resource tree for the device
278 * @pmem_res: Active Persistent memory capacity configuration
279 * @ram_res: Active Volatile memory capacity configuration
280 * @total_bytes: sum of all possible capacities
281 * @volatile_only_bytes: hard volatile capacity
282 * @persistent_only_bytes: hard persistent capacity
283 * @partition_align_bytes: alignment size for partition-able capacity
284 * @active_volatile_bytes: sum of hard + soft volatile
285 * @active_persistent_bytes: sum of hard + soft persistent
286 * @next_volatile_bytes: volatile capacity change pending device reset
287 * @next_persistent_bytes: persistent capacity change pending device reset
288 * @component_reg_phys: register base of component registers
289 * @info: Cached DVSEC information about the device.
290 * @serial: PCIe Device Serial Number
291 * @event: event log driver state
292 * @poison: poison driver state info
293 * @mbox_send: @dev specific transport for transmitting mailbox commands
295 * See section 8.2.9.5.2 Capacity Configuration and Label Storage for
296 * details on capacity parameters.
298 struct cxl_dev_state {
300 struct cxl_memdev *cxlmd;
302 struct cxl_regs regs;
308 struct mutex mbox_mutex; /* Protects device mailbox and firmware */
309 char firmware_version[0x10];
310 DECLARE_BITMAP(enabled_cmds, CXL_MEM_COMMAND_ID_MAX);
311 DECLARE_BITMAP(exclusive_cmds, CXL_MEM_COMMAND_ID_MAX);
313 struct resource dpa_res;
314 struct resource pmem_res;
315 struct resource ram_res;
317 u64 volatile_only_bytes;
318 u64 persistent_only_bytes;
319 u64 partition_align_bytes;
321 u64 active_volatile_bytes;
322 u64 active_persistent_bytes;
323 u64 next_volatile_bytes;
324 u64 next_persistent_bytes;
326 resource_size_t component_reg_phys;
329 struct cxl_event_state event;
330 struct cxl_poison_state poison;
332 int (*mbox_send)(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd);
336 CXL_MBOX_OP_INVALID = 0x0000,
337 CXL_MBOX_OP_RAW = CXL_MBOX_OP_INVALID,
338 CXL_MBOX_OP_GET_EVENT_RECORD = 0x0100,
339 CXL_MBOX_OP_CLEAR_EVENT_RECORD = 0x0101,
340 CXL_MBOX_OP_GET_EVT_INT_POLICY = 0x0102,
341 CXL_MBOX_OP_SET_EVT_INT_POLICY = 0x0103,
342 CXL_MBOX_OP_GET_FW_INFO = 0x0200,
343 CXL_MBOX_OP_ACTIVATE_FW = 0x0202,
344 CXL_MBOX_OP_SET_TIMESTAMP = 0x0301,
345 CXL_MBOX_OP_GET_SUPPORTED_LOGS = 0x0400,
346 CXL_MBOX_OP_GET_LOG = 0x0401,
347 CXL_MBOX_OP_IDENTIFY = 0x4000,
348 CXL_MBOX_OP_GET_PARTITION_INFO = 0x4100,
349 CXL_MBOX_OP_SET_PARTITION_INFO = 0x4101,
350 CXL_MBOX_OP_GET_LSA = 0x4102,
351 CXL_MBOX_OP_SET_LSA = 0x4103,
352 CXL_MBOX_OP_GET_HEALTH_INFO = 0x4200,
353 CXL_MBOX_OP_GET_ALERT_CONFIG = 0x4201,
354 CXL_MBOX_OP_SET_ALERT_CONFIG = 0x4202,
355 CXL_MBOX_OP_GET_SHUTDOWN_STATE = 0x4203,
356 CXL_MBOX_OP_SET_SHUTDOWN_STATE = 0x4204,
357 CXL_MBOX_OP_GET_POISON = 0x4300,
358 CXL_MBOX_OP_INJECT_POISON = 0x4301,
359 CXL_MBOX_OP_CLEAR_POISON = 0x4302,
360 CXL_MBOX_OP_GET_SCAN_MEDIA_CAPS = 0x4303,
361 CXL_MBOX_OP_SCAN_MEDIA = 0x4304,
362 CXL_MBOX_OP_GET_SCAN_MEDIA = 0x4305,
363 CXL_MBOX_OP_GET_SECURITY_STATE = 0x4500,
364 CXL_MBOX_OP_SET_PASSPHRASE = 0x4501,
365 CXL_MBOX_OP_DISABLE_PASSPHRASE = 0x4502,
366 CXL_MBOX_OP_UNLOCK = 0x4503,
367 CXL_MBOX_OP_FREEZE_SECURITY = 0x4504,
368 CXL_MBOX_OP_PASSPHRASE_SECURE_ERASE = 0x4505,
369 CXL_MBOX_OP_MAX = 0x10000
372 #define DEFINE_CXL_CEL_UUID \
373 UUID_INIT(0xda9c0b5, 0xbf41, 0x4b78, 0x8f, 0x79, 0x96, 0xb1, 0x62, \
376 #define DEFINE_CXL_VENDOR_DEBUG_UUID \
377 UUID_INIT(0xe1819d9, 0x11a9, 0x400c, 0x81, 0x1f, 0xd6, 0x07, 0x19, \
380 struct cxl_mbox_get_supported_logs {
383 struct cxl_gsl_entry {
389 struct cxl_cel_entry {
394 struct cxl_mbox_get_log {
400 /* See CXL 2.0 Table 175 Identify Memory Device Output Payload */
401 struct cxl_mbox_identify {
402 char fw_revision[0x10];
403 __le64 total_capacity;
404 __le64 volatile_capacity;
405 __le64 persistent_capacity;
406 __le64 partition_align;
407 __le16 info_event_log_size;
408 __le16 warning_event_log_size;
409 __le16 failure_event_log_size;
410 __le16 fatal_event_log_size;
412 u8 poison_list_max_mer[3];
413 __le16 inject_poison_limit;
415 u8 qos_telemetry_caps;
419 * Common Event Record Format
420 * CXL rev 3.0 section 8.2.9.2.1; Table 8-42
422 struct cxl_event_record_hdr {
427 __le16 related_handle;
433 #define CXL_EVENT_RECORD_DATA_LENGTH 0x50
434 struct cxl_event_record_raw {
435 struct cxl_event_record_hdr hdr;
436 u8 data[CXL_EVENT_RECORD_DATA_LENGTH];
440 * Get Event Records output payload
441 * CXL rev 3.0 section 8.2.9.2.2; Table 8-50
443 #define CXL_GET_EVENT_FLAG_OVERFLOW BIT(0)
444 #define CXL_GET_EVENT_FLAG_MORE_RECORDS BIT(1)
445 struct cxl_get_event_payload {
448 __le16 overflow_err_count;
449 __le64 first_overflow_timestamp;
450 __le64 last_overflow_timestamp;
453 struct cxl_event_record_raw records[];
457 * CXL rev 3.0 section 8.2.9.2.2; Table 8-49
459 enum cxl_event_log_type {
460 CXL_EVENT_TYPE_INFO = 0x00,
463 CXL_EVENT_TYPE_FATAL,
468 * Clear Event Records input payload
469 * CXL rev 3.0 section 8.2.9.2.3; Table 8-51
471 struct cxl_mbox_clear_event_payload {
472 u8 event_log; /* enum cxl_event_log_type */
478 #define CXL_CLEAR_EVENT_MAX_HANDLES U8_MAX
481 * General Media Event Record
482 * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43
484 #define CXL_EVENT_GEN_MED_COMP_ID_SIZE 0x10
485 struct cxl_event_gen_media {
486 struct cxl_event_record_hdr hdr;
491 u8 validity_flags[2];
495 u8 component_id[CXL_EVENT_GEN_MED_COMP_ID_SIZE];
500 * DRAM Event Record - DER
501 * CXL rev 3.0 section 8.2.9.2.1.2; Table 3-44
503 #define CXL_EVENT_DER_CORRECTION_MASK_SIZE 0x20
504 struct cxl_event_dram {
505 struct cxl_event_record_hdr hdr;
510 u8 validity_flags[2];
518 u8 correction_mask[CXL_EVENT_DER_CORRECTION_MASK_SIZE];
523 * Get Health Info Record
524 * CXL rev 3.0 section 8.2.9.8.3.1; Table 8-100
526 struct cxl_get_health_info {
532 u8 dirty_shutdown_cnt[4];
533 u8 cor_vol_err_cnt[4];
534 u8 cor_per_err_cnt[4];
538 * Memory Module Event Record
539 * CXL rev 3.0 section 8.2.9.2.1.3; Table 8-45
541 struct cxl_event_mem_module {
542 struct cxl_event_record_hdr hdr;
544 struct cxl_get_health_info info;
548 struct cxl_mbox_get_partition_info {
549 __le64 active_volatile_cap;
550 __le64 active_persistent_cap;
551 __le64 next_volatile_cap;
552 __le64 next_persistent_cap;
555 struct cxl_mbox_get_lsa {
560 struct cxl_mbox_set_lsa {
566 struct cxl_mbox_set_partition_info {
567 __le64 volatile_capacity;
571 #define CXL_SET_PARTITION_IMMEDIATE_FLAG BIT(0)
573 /* Set Timestamp CXL 3.0 Spec 8.2.9.4.2 */
574 struct cxl_mbox_set_timestamp_in {
579 /* Get Poison List CXL 3.0 Spec 8.2.9.8.4.1 */
580 struct cxl_mbox_poison_in {
585 struct cxl_mbox_poison_out {
591 struct cxl_poison_record {
599 * Get Poison List address field encodes the starting
600 * address of poison, and the source of the poison.
602 #define CXL_POISON_START_MASK GENMASK_ULL(63, 6)
603 #define CXL_POISON_SOURCE_MASK GENMASK(2, 0)
605 /* Get Poison List record length is in units of 64 bytes */
606 #define CXL_POISON_LEN_MULT 64
608 /* Kernel defined maximum for a list of poison errors */
609 #define CXL_POISON_LIST_MAX 1024
611 /* Get Poison List: Payload out flags */
612 #define CXL_POISON_FLAG_MORE BIT(0)
613 #define CXL_POISON_FLAG_OVERFLOW BIT(1)
614 #define CXL_POISON_FLAG_SCANNING BIT(2)
616 /* Get Poison List: Poison Source */
617 #define CXL_POISON_SOURCE_UNKNOWN 0
618 #define CXL_POISON_SOURCE_EXTERNAL 1
619 #define CXL_POISON_SOURCE_INTERNAL 2
620 #define CXL_POISON_SOURCE_INJECTED 3
621 #define CXL_POISON_SOURCE_VENDOR 7
623 /* Inject & Clear Poison CXL 3.0 Spec 8.2.9.8.4.2/3 */
624 struct cxl_mbox_inject_poison {
628 /* Clear Poison CXL 3.0 Spec 8.2.9.8.4.3 */
629 struct cxl_mbox_clear_poison {
631 u8 write_data[CXL_POISON_LEN_MULT];
635 * struct cxl_mem_command - Driver representation of a memory device command
636 * @info: Command information as it exists for the UAPI
637 * @opcode: The actual bits used for the mailbox protocol
638 * @flags: Set of flags effecting driver behavior.
640 * * %CXL_CMD_FLAG_FORCE_ENABLE: In cases of error, commands with this flag
641 * will be enabled by the driver regardless of what hardware may have
644 * The cxl_mem_command is the driver's internal representation of commands that
645 * are supported by the driver. Some of these commands may not be supported by
646 * the hardware. The driver will use @info to validate the fields passed in by
647 * the user then submit the @opcode to the hardware.
649 * See struct cxl_command_info.
651 struct cxl_mem_command {
652 struct cxl_command_info info;
653 enum cxl_opcode opcode;
655 #define CXL_CMD_FLAG_FORCE_ENABLE BIT(0)
658 #define CXL_PMEM_SEC_STATE_USER_PASS_SET 0x01
659 #define CXL_PMEM_SEC_STATE_MASTER_PASS_SET 0x02
660 #define CXL_PMEM_SEC_STATE_LOCKED 0x04
661 #define CXL_PMEM_SEC_STATE_FROZEN 0x08
662 #define CXL_PMEM_SEC_STATE_USER_PLIMIT 0x10
663 #define CXL_PMEM_SEC_STATE_MASTER_PLIMIT 0x20
665 /* set passphrase input payload */
666 struct cxl_set_pass {
669 /* CXL field using NVDIMM define, same length */
670 u8 old_pass[NVDIMM_PASSPHRASE_LEN];
671 u8 new_pass[NVDIMM_PASSPHRASE_LEN];
674 /* disable passphrase input payload */
675 struct cxl_disable_pass {
678 u8 pass[NVDIMM_PASSPHRASE_LEN];
681 /* passphrase secure erase payload */
682 struct cxl_pass_erase {
685 u8 pass[NVDIMM_PASSPHRASE_LEN];
689 CXL_PMEM_SEC_PASS_MASTER = 0,
690 CXL_PMEM_SEC_PASS_USER,
693 int cxl_internal_send_cmd(struct cxl_dev_state *cxlds,
694 struct cxl_mbox_cmd *cmd);
695 int cxl_dev_state_identify(struct cxl_dev_state *cxlds);
696 int cxl_await_media_ready(struct cxl_dev_state *cxlds);
697 int cxl_enumerate_cmds(struct cxl_dev_state *cxlds);
698 int cxl_mem_create_range_info(struct cxl_dev_state *cxlds);
699 struct cxl_dev_state *cxl_dev_state_create(struct device *dev);
700 void set_exclusive_cxl_commands(struct cxl_dev_state *cxlds, unsigned long *cmds);
701 void clear_exclusive_cxl_commands(struct cxl_dev_state *cxlds, unsigned long *cmds);
702 void cxl_mem_get_event_records(struct cxl_dev_state *cxlds, u32 status);
703 int cxl_set_timestamp(struct cxl_dev_state *cxlds);
704 int cxl_poison_state_init(struct cxl_dev_state *cxlds);
705 int cxl_mem_get_poison(struct cxl_memdev *cxlmd, u64 offset, u64 len,
706 struct cxl_region *cxlr);
707 int cxl_trigger_poison_list(struct cxl_memdev *cxlmd);
708 int cxl_inject_poison(struct cxl_memdev *cxlmd, u64 dpa);
709 int cxl_clear_poison(struct cxl_memdev *cxlmd, u64 dpa);
711 #ifdef CONFIG_CXL_SUSPEND
712 void cxl_mem_active_inc(void);
713 void cxl_mem_active_dec(void);
715 static inline void cxl_mem_active_inc(void)
718 static inline void cxl_mem_active_dec(void)
724 struct cxl_component_regs regs;
725 unsigned int decoder_count;
726 unsigned int target_count;
727 unsigned int interleave_mask;
728 struct cxl_port *port;
732 struct dentry *cxl_debugfs_create_dir(const char *dir);
733 void cxl_dpa_debug(struct seq_file *file, struct cxl_dev_state *cxlds);
734 #endif /* __CXL_MEM_H__ */