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freebsd-src/sys/cam/ctl/ctl_private.h
John Baldwin 0c4ee619df ctl: Support for NVMe commands 
- Add support for queueing and executing NVMe admin and NVM commands
  via ctl_run and ctl_queue.  This requires fixing a few places that
  were SCSI-specific to add NVME logic.

- NVMe has much simpler command ordering requirements than SCSI.  In
  particular, the HBA is not required to enforce any specific ordering
  for requests with overlapping LBAs.  The host is required to manage
  that ordering.  However, fused commands (currently only COMPARE and
  WRITE NVM commands can be fused) are required to be executed
  atomically.

  To support fused commands, make the second half of a fused command
  block on the first half, and have commands submitted after a fused
  command pair block on the second half.

- Add handlers and command tables for admin and NVM commands that
  operate on individual namespaces and will be passed down from an
  NVMe over Fabrics controller to a CTL LUN.

Reviewed by:	ken, imp
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D44720
2024-05-02 16:32:09 -07:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2003, 2004, 2005, 2008 Silicon Graphics International Corp.
* Copyright (c) 2014-2017 Alexander Motin <mav@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_private.h#7 $
*/
/*
* CAM Target Layer driver private data structures/definitions.
*
* Author: Ken Merry <ken@FreeBSD.org>
*/
#ifndef _CTL_PRIVATE_H_
#define _CTL_PRIVATE_H_
#include <sys/sysctl.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_cd.h>
#include <cam/scsi/scsi_da.h>
/*
* SCSI vendor and product names.
*/
#define CTL_VENDOR "FREEBSD "
#define CTL_DIRECT_PRODUCT "CTLDISK "
#define CTL_PROCESSOR_PRODUCT "CTLPROCESSOR "
#define CTL_CDROM_PRODUCT "CTLCDROM "
#define CTL_UNKNOWN_PRODUCT "CTLDEVICE "
#define CTL_POOL_ENTRIES_OTHER_SC 200
struct ctl_io_pool {
char name[64];
uint32_t id;
struct ctl_softc *ctl_softc;
struct uma_zone *zone;
};
typedef enum {
CTL_SER_SEQ,
CTL_SER_PASS,
CTL_SER_EXTENTOPT,
CTL_SER_EXTENT,
CTL_SER_BLOCKOPT,
CTL_SER_BLOCK,
} ctl_serialize_action;
typedef enum {
CTL_ACTION_PASS,
CTL_ACTION_SKIP,
CTL_ACTION_BLOCK,
CTL_ACTION_OVERLAP,
CTL_ACTION_OVERLAP_TAG,
CTL_ACTION_FUSED,
} ctl_action;
/*
* WARNING: Keep the bottom nibble here free, we OR in the data direction
* flags for each command.
*
* Note: "OK_ON_NO_LUN" == we don't have to have a lun configured
* "OK_ON_BOTH" == we have to have a lun configured
* "SA5" == command has 5-bit service action at byte 1
*/
typedef enum {
CTL_CMD_FLAG_NONE = 0x0000,
CTL_CMD_FLAG_NO_SENSE = 0x0010,
CTL_CMD_FLAG_ALLOW_ON_RESV = 0x0020,
CTL_CMD_FLAG_ALLOW_ON_PR_RESV = 0x0040,
CTL_CMD_FLAG_ALLOW_ON_PR_WRESV = 0x0080,
CTL_CMD_FLAG_OK_ON_PROC = 0x0100,
CTL_CMD_FLAG_OK_ON_DIRECT = 0x0200,
CTL_CMD_FLAG_OK_ON_CDROM = 0x0400,
CTL_CMD_FLAG_OK_ON_BOTH = 0x0700,
CTL_CMD_FLAG_OK_ON_NO_LUN = 0x0800,
CTL_CMD_FLAG_OK_ON_NO_MEDIA = 0x1000,
CTL_CMD_FLAG_OK_ON_STANDBY = 0x2000,
CTL_CMD_FLAG_OK_ON_UNAVAIL = 0x4000,
CTL_CMD_FLAG_SA5 = 0x8000,
CTL_CMD_FLAG_RUN_HERE = 0x10000
} ctl_cmd_flags;
typedef enum {
CTL_SERIDX_TUR = 0,
CTL_SERIDX_READ,
CTL_SERIDX_WRITE,
CTL_SERIDX_UNMAP,
CTL_SERIDX_SYNC,
CTL_SERIDX_MD_SNS,
CTL_SERIDX_MD_SEL,
CTL_SERIDX_RQ_SNS,
CTL_SERIDX_INQ,
CTL_SERIDX_RD_CAP,
CTL_SERIDX_RES,
CTL_SERIDX_LOG_SNS,
CTL_SERIDX_FORMAT,
CTL_SERIDX_START,
/* TBD: others to be filled in as needed */
CTL_SERIDX_COUNT, /* LAST, not a normal code, provides # codes */
CTL_SERIDX_INVLD = CTL_SERIDX_COUNT
} ctl_seridx;
typedef int ctl_opfunc(struct ctl_scsiio *ctsio);
struct ctl_cmd_entry {
ctl_opfunc *execute;
ctl_seridx seridx;
ctl_cmd_flags flags;
ctl_lun_error_pattern pattern;
uint8_t length; /* CDB length */
uint8_t usage[15]; /* Mask of allowed CDB bits
* after the opcode byte. */
};
/* Only data flags are currently used for NVMe commands. */
struct ctl_nvme_cmd_entry {
int (*execute)(struct ctl_nvmeio *);
ctl_io_flags flags;
};
typedef enum {
CTL_LUN_NONE = 0x000,
CTL_LUN_CONTROL = 0x001,
CTL_LUN_RESERVED = 0x002,
CTL_LUN_INVALID = 0x004,
CTL_LUN_DISABLED = 0x008,
CTL_LUN_STOPPED = 0x020,
CTL_LUN_NO_MEDIA = 0x040,
CTL_LUN_EJECTED = 0x080,
CTL_LUN_PR_RESERVED = 0x100,
CTL_LUN_PRIMARY_SC = 0x200,
CTL_LUN_READONLY = 0x800,
CTL_LUN_PEER_SC_PRIMARY = 0x1000,
CTL_LUN_REMOVABLE = 0x2000
} ctl_lun_flags;
typedef enum {
CTLBLOCK_FLAG_NONE = 0x00,
CTLBLOCK_FLAG_INVALID = 0x01
} ctlblock_flags;
union ctl_softcs {
struct ctl_softc *ctl_softc;
struct ctlblock_softc *ctlblock_softc;
};
/*
* Mode page defaults.
*/
#define CTL_DEFAULT_ROTATION_RATE SVPD_NON_ROTATING
struct ctl_page_index;
typedef int ctl_modesen_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
int pc);
typedef int ctl_modesel_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
uint8_t *page_ptr);
typedef enum {
CTL_PAGE_FLAG_NONE = 0x00,
CTL_PAGE_FLAG_DIRECT = 0x01,
CTL_PAGE_FLAG_PROC = 0x02,
CTL_PAGE_FLAG_CDROM = 0x04,
CTL_PAGE_FLAG_ALL = 0x07
} ctl_page_flags;
struct ctl_page_index {
uint8_t page_code;
uint8_t subpage;
uint16_t page_len;
uint8_t *page_data;
ctl_page_flags page_flags;
ctl_modesen_handler *sense_handler;
ctl_modesel_handler *select_handler;
};
#define CTL_PAGE_CURRENT 0x00
#define CTL_PAGE_CHANGEABLE 0x01
#define CTL_PAGE_DEFAULT 0x02
#define CTL_PAGE_SAVED 0x03
#define CTL_NUM_LBP_PARAMS 4
#define CTL_NUM_LBP_THRESH 4
#define CTL_LBP_EXPONENT 11 /* 2048 sectors */
#define CTL_LBP_PERIOD 10 /* 10 seconds */
#define CTL_LBP_UA_PERIOD 300 /* 5 minutes */
struct ctl_logical_block_provisioning_page {
struct scsi_logical_block_provisioning_page main;
struct scsi_logical_block_provisioning_page_descr descr[CTL_NUM_LBP_THRESH];
};
static const struct ctl_page_index page_index_template[] = {
{SMS_RW_ERROR_RECOVERY_PAGE, 0, sizeof(struct scsi_da_rw_recovery_page), NULL,
CTL_PAGE_FLAG_DIRECT | CTL_PAGE_FLAG_CDROM, NULL, ctl_default_page_handler},
{SMS_VERIFY_ERROR_RECOVERY_PAGE, 0, sizeof(struct scsi_da_verify_recovery_page), NULL,
CTL_PAGE_FLAG_DIRECT | CTL_PAGE_FLAG_CDROM, NULL, ctl_default_page_handler},
{SMS_CACHING_PAGE, 0, sizeof(struct scsi_caching_page), NULL,
CTL_PAGE_FLAG_DIRECT | CTL_PAGE_FLAG_CDROM,
NULL, ctl_default_page_handler},
{SMS_CONTROL_MODE_PAGE, 0, sizeof(struct scsi_control_page), NULL,
CTL_PAGE_FLAG_ALL, NULL, ctl_default_page_handler},
{SMS_CONTROL_MODE_PAGE | SMPH_SPF, 0x01,
sizeof(struct scsi_control_ext_page), NULL,
CTL_PAGE_FLAG_ALL, NULL, ctl_default_page_handler},
{SMS_INFO_EXCEPTIONS_PAGE, 0, sizeof(struct scsi_info_exceptions_page), NULL,
CTL_PAGE_FLAG_ALL, NULL, ctl_ie_page_handler},
{SMS_INFO_EXCEPTIONS_PAGE | SMPH_SPF, 0x02,
sizeof(struct ctl_logical_block_provisioning_page), NULL,
CTL_PAGE_FLAG_DIRECT, NULL, ctl_default_page_handler},
{SMS_CDDVD_CAPS_PAGE, 0,
sizeof(struct scsi_cddvd_capabilities_page), NULL,
CTL_PAGE_FLAG_CDROM, NULL, NULL},
};
#define CTL_NUM_MODE_PAGES sizeof(page_index_template)/ \
sizeof(page_index_template[0])
struct ctl_mode_pages {
struct scsi_da_rw_recovery_page rw_er_page[4];
struct scsi_da_verify_recovery_page verify_er_page[4];
struct scsi_caching_page caching_page[4];
struct scsi_control_page control_page[4];
struct scsi_control_ext_page control_ext_page[4];
struct scsi_info_exceptions_page ie_page[4];
struct ctl_logical_block_provisioning_page lbp_page[4];
struct scsi_cddvd_capabilities_page cddvd_page[4];
struct ctl_page_index index[CTL_NUM_MODE_PAGES];
};
#define MODE_RWER mode_pages.rw_er_page[CTL_PAGE_CURRENT]
#define MODE_VER mode_pages.verify_er_page[CTL_PAGE_CURRENT]
#define MODE_CACHING mode_pages.caching_page[CTL_PAGE_CURRENT]
#define MODE_CTRL mode_pages.control_page[CTL_PAGE_CURRENT]
#define MODE_CTRLE mode_pages.control_ext_page[CTL_PAGE_CURRENT]
#define MODE_IE mode_pages.ie_page[CTL_PAGE_CURRENT]
#define MODE_LBP mode_pages.lbp_page[CTL_PAGE_CURRENT]
#define MODE_CDDVD mode_pages.cddvd_page[CTL_PAGE_CURRENT]
static const struct ctl_page_index log_page_index_template[] = {
{SLS_SUPPORTED_PAGES_PAGE, 0, 0, NULL,
CTL_PAGE_FLAG_ALL, NULL, NULL},
{SLS_SUPPORTED_PAGES_PAGE, SLS_SUPPORTED_SUBPAGES_SUBPAGE, 0, NULL,
CTL_PAGE_FLAG_ALL, NULL, NULL},
{SLS_TEMPERATURE, 0, 0, NULL,
CTL_PAGE_FLAG_DIRECT, ctl_temp_log_sense_handler, NULL},
{SLS_LOGICAL_BLOCK_PROVISIONING, 0, 0, NULL,
CTL_PAGE_FLAG_DIRECT, ctl_lbp_log_sense_handler, NULL},
{SLS_STAT_AND_PERF, 0, 0, NULL,
CTL_PAGE_FLAG_ALL, ctl_sap_log_sense_handler, NULL},
{SLS_IE_PAGE, 0, 0, NULL,
CTL_PAGE_FLAG_ALL, ctl_ie_log_sense_handler, NULL},
};
#define CTL_NUM_LOG_PAGES sizeof(log_page_index_template)/ \
sizeof(log_page_index_template[0])
struct ctl_log_pages {
uint8_t pages_page[CTL_NUM_LOG_PAGES];
uint8_t subpages_page[CTL_NUM_LOG_PAGES * 2];
uint8_t lbp_page[12*CTL_NUM_LBP_PARAMS];
struct stat_page {
struct scsi_log_stat_and_perf sap;
struct scsi_log_idle_time it;
struct scsi_log_time_interval ti;
} stat_page;
struct scsi_log_temperature temp_page[2];
struct scsi_log_informational_exceptions ie_page;
struct ctl_page_index index[CTL_NUM_LOG_PAGES];
};
struct ctl_lun_delay_info {
ctl_delay_type datamove_type;
uint32_t datamove_delay;
ctl_delay_type done_type;
uint32_t done_delay;
};
#define CTL_PR_ALL_REGISTRANTS 0xFFFFFFFF
#define CTL_PR_NO_RESERVATION 0xFFFFFFF0
struct ctl_devid {
int len;
uint8_t data[];
};
#define NUM_HA_SHELVES 2
#define CTL_WRITE_BUFFER_SIZE 262144
struct tpc_list;
struct ctl_lun {
struct mtx lun_lock;
uint64_t lun;
ctl_lun_flags flags;
STAILQ_HEAD(,ctl_error_desc) error_list;
uint64_t error_serial;
struct ctl_softc *ctl_softc;
struct ctl_be_lun *be_lun;
struct ctl_backend_driver *backend;
struct ctl_lun_delay_info delay_info;
#ifdef CTL_TIME_IO
sbintime_t idle_time;
sbintime_t last_busy;
#endif
LIST_HEAD(ctl_ooaq, ctl_io_hdr) ooa_queue;
STAILQ_ENTRY(ctl_lun) links;
struct scsi_sense_data **pending_sense;
ctl_ua_type **pending_ua;
uint8_t ua_tpt_info[8];
time_t lasttpt;
uint8_t ie_asc; /* Informational exceptions */
uint8_t ie_ascq;
int ie_reported; /* Already reported */
uint32_t ie_reportcnt; /* REPORT COUNT */
struct callout ie_callout; /* INTERVAL TIMER */
struct ctl_mode_pages mode_pages;
struct ctl_log_pages log_pages;
struct ctl_io_stats stats;
uint32_t res_idx;
uint32_t pr_generation;
uint64_t **pr_keys;
int pr_key_count;
uint32_t pr_res_idx;
uint8_t pr_res_type;
int prevent_count;
uint32_t *prevent;
uint8_t *write_buffer;
struct ctl_devid *lun_devid;
TAILQ_HEAD(tpc_lists, tpc_list) tpc_lists;
};
typedef enum {
CTL_FLAG_ACTIVE_SHELF = 0x04
} ctl_gen_flags;
#define CTL_MAX_THREADS 16
struct ctl_thread {
struct mtx_padalign queue_lock;
struct ctl_softc *ctl_softc;
struct thread *thread;
STAILQ_HEAD(, ctl_io_hdr) incoming_queue;
STAILQ_HEAD(, ctl_io_hdr) rtr_queue;
STAILQ_HEAD(, ctl_io_hdr) done_queue;
STAILQ_HEAD(, ctl_io_hdr) isc_queue;
};
struct tpc_token;
struct ctl_softc {
struct mtx ctl_lock;
struct cdev *dev;
int num_luns;
ctl_gen_flags flags;
ctl_ha_mode ha_mode;
int ha_id;
int is_single;
ctl_ha_link_state ha_link;
int port_min;
int port_max;
int port_cnt;
int init_min;
int init_max;
struct sysctl_ctx_list sysctl_ctx;
struct sysctl_oid *sysctl_tree;
void *othersc_pool;
struct proc *ctl_proc;
uint32_t *ctl_lun_mask;
struct ctl_lun **ctl_luns;
uint32_t *ctl_port_mask;
STAILQ_HEAD(, ctl_lun) lun_list;
uint32_t num_frontends;
STAILQ_HEAD(, ctl_frontend) fe_list;
uint32_t num_ports;
STAILQ_HEAD(, ctl_port) port_list;
struct ctl_port **ctl_ports;
uint32_t num_backends;
STAILQ_HEAD(, ctl_backend_driver) be_list;
struct uma_zone *io_zone;
uint32_t cur_pool_id;
int shutdown;
struct ctl_thread threads[CTL_MAX_THREADS];
struct thread *thresh_thread;
TAILQ_HEAD(tpc_tokens, tpc_token) tpc_tokens;
struct callout tpc_timeout;
struct mtx tpc_lock;
};
#ifdef _KERNEL
extern const struct ctl_cmd_entry ctl_cmd_table[256];
extern const struct ctl_nvme_cmd_entry nvme_admin_cmd_table[256];
extern const struct ctl_nvme_cmd_entry nvme_nvm_cmd_table[256];
uint32_t ctl_get_initindex(struct ctl_nexus *nexus);
int ctl_lun_map_init(struct ctl_port *port);
int ctl_lun_map_deinit(struct ctl_port *port);
int ctl_lun_map_set(struct ctl_port *port, uint32_t plun, uint32_t glun);
int ctl_lun_map_unset(struct ctl_port *port, uint32_t plun);
uint32_t ctl_lun_map_from_port(struct ctl_port *port, uint32_t plun);
uint32_t ctl_lun_map_to_port(struct ctl_port *port, uint32_t glun);
int ctl_pool_create(struct ctl_softc *ctl_softc, const char *pool_name,
uint32_t total_ctl_io, void **npool);
void ctl_pool_free(struct ctl_io_pool *pool);
int ctl_scsi_release(struct ctl_scsiio *ctsio);
int ctl_scsi_reserve(struct ctl_scsiio *ctsio);
int ctl_start_stop(struct ctl_scsiio *ctsio);
int ctl_prevent_allow(struct ctl_scsiio *ctsio);
int ctl_sync_cache(struct ctl_scsiio *ctsio);
int ctl_format(struct ctl_scsiio *ctsio);
int ctl_read_buffer(struct ctl_scsiio *ctsio);
int ctl_write_buffer(struct ctl_scsiio *ctsio);
int ctl_write_same(struct ctl_scsiio *ctsio);
int ctl_unmap(struct ctl_scsiio *ctsio);
int ctl_mode_select(struct ctl_scsiio *ctsio);
int ctl_mode_sense(struct ctl_scsiio *ctsio);
int ctl_log_sense(struct ctl_scsiio *ctsio);
int ctl_read_capacity(struct ctl_scsiio *ctsio);
int ctl_read_capacity_16(struct ctl_scsiio *ctsio);
int ctl_read_defect(struct ctl_scsiio *ctsio);
int ctl_read_toc(struct ctl_scsiio *ctsio);
int ctl_read_write(struct ctl_scsiio *ctsio);
int ctl_cnw(struct ctl_scsiio *ctsio);
int ctl_report_luns(struct ctl_scsiio *ctsio);
int ctl_request_sense(struct ctl_scsiio *ctsio);
int ctl_tur(struct ctl_scsiio *ctsio);
int ctl_verify(struct ctl_scsiio *ctsio);
int ctl_inquiry(struct ctl_scsiio *ctsio);
int ctl_get_config(struct ctl_scsiio *ctsio);
int ctl_get_event_status(struct ctl_scsiio *ctsio);
int ctl_mechanism_status(struct ctl_scsiio *ctsio);
int ctl_persistent_reserve_in(struct ctl_scsiio *ctsio);
int ctl_persistent_reserve_out(struct ctl_scsiio *ctsio);
int ctl_report_ident_info(struct ctl_scsiio *ctsio);
int ctl_report_tagret_port_groups(struct ctl_scsiio *ctsio);
int ctl_report_supported_opcodes(struct ctl_scsiio *ctsio);
int ctl_report_supported_tmf(struct ctl_scsiio *ctsio);
int ctl_report_timestamp(struct ctl_scsiio *ctsio);
int ctl_get_lba_status(struct ctl_scsiio *ctsio);
int ctl_nvme_identify(struct ctl_nvmeio *ctnio);
int ctl_nvme_flush(struct ctl_nvmeio *ctnio);
int ctl_nvme_read_write(struct ctl_nvmeio *ctnio);
int ctl_nvme_write_uncorrectable(struct ctl_nvmeio *ctnio);
int ctl_nvme_compare(struct ctl_nvmeio *ctnio);
int ctl_nvme_write_zeroes(struct ctl_nvmeio *ctnio);
int ctl_nvme_dataset_management(struct ctl_nvmeio *ctnio);
int ctl_nvme_verify(struct ctl_nvmeio *ctnio);
void ctl_tpc_init(struct ctl_softc *softc);
void ctl_tpc_shutdown(struct ctl_softc *softc);
void ctl_tpc_lun_init(struct ctl_lun *lun);
void ctl_tpc_lun_clear(struct ctl_lun *lun, uint32_t initidx);
void ctl_tpc_lun_shutdown(struct ctl_lun *lun);
int ctl_inquiry_evpd_tpc(struct ctl_scsiio *ctsio, int alloc_len);
int ctl_receive_copy_status_lid1(struct ctl_scsiio *ctsio);
int ctl_receive_copy_failure_details(struct ctl_scsiio *ctsio);
int ctl_receive_copy_status_lid4(struct ctl_scsiio *ctsio);
int ctl_receive_copy_operating_parameters(struct ctl_scsiio *ctsio);
int ctl_extended_copy_lid1(struct ctl_scsiio *ctsio);
int ctl_extended_copy_lid4(struct ctl_scsiio *ctsio);
int ctl_copy_operation_abort(struct ctl_scsiio *ctsio);
int ctl_populate_token(struct ctl_scsiio *ctsio);
int ctl_write_using_token(struct ctl_scsiio *ctsio);
int ctl_receive_rod_token_information(struct ctl_scsiio *ctsio);
int ctl_report_all_rod_tokens(struct ctl_scsiio *ctsio);
#endif /* _KERNEL */
#endif /* _CTL_PRIVATE_H_ */
/*
* vim: ts=8
*/
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