219 lines
6.9 KiB
C
219 lines
6.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright 2009 Scott Long
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _CAM_CAM_XPT_INTERNAL_H
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#define _CAM_CAM_XPT_INTERNAL_H 1
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#include <sys/taskqueue.h>
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/* Forward Declarations */
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struct cam_eb;
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struct cam_et;
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struct cam_ed;
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typedef struct cam_ed * (*xpt_alloc_device_func)(struct cam_eb *bus,
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struct cam_et *target,
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lun_id_t lun_id);
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typedef void (*xpt_release_device_func)(struct cam_ed *device);
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typedef void (*xpt_action_func)(union ccb *start_ccb);
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typedef void (*xpt_dev_async_func)(u_int32_t async_code,
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struct cam_eb *bus,
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struct cam_et *target,
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struct cam_ed *device,
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void *async_arg);
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typedef void (*xpt_announce_periph_func)(struct cam_periph *periph);
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typedef void (*xpt_announce_periph_sbuf_func)(struct cam_periph *periph, struct sbuf *sbuf);
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struct xpt_xport_ops {
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xpt_alloc_device_func alloc_device;
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xpt_release_device_func reldev;
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xpt_action_func action;
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xpt_dev_async_func async;
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xpt_announce_periph_func announce;
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xpt_announce_periph_sbuf_func announce_sbuf;
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};
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struct xpt_xport {
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cam_xport xport;
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const char *name;
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struct xpt_xport_ops *ops;
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};
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SET_DECLARE(cam_xpt_xport_set, struct xpt_xport);
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#define CAM_XPT_XPORT(data) \
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DATA_SET(cam_xpt_xport_set, data)
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typedef void (*xpt_proto_announce_func)(struct cam_ed *);
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typedef void (*xpt_proto_announce_sbuf_func)(struct cam_ed *, struct sbuf *);
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typedef void (*xpt_proto_debug_out_func)(union ccb *);
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struct xpt_proto_ops {
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xpt_proto_announce_func announce;
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xpt_proto_announce_sbuf_func announce_sbuf;
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xpt_proto_announce_func denounce;
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xpt_proto_announce_sbuf_func denounce_sbuf;
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xpt_proto_debug_out_func debug_out;
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};
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struct xpt_proto {
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cam_proto proto;
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const char *name;
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struct xpt_proto_ops *ops;
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};
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SET_DECLARE(cam_xpt_proto_set, struct xpt_proto);
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#define CAM_XPT_PROTO(data) \
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DATA_SET(cam_xpt_proto_set, data)
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/*
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* The CAM EDT (Existing Device Table) contains the device information for
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* all devices for all buses in the system. The table contains a
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* cam_ed structure for each device on the bus.
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*/
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struct cam_ed {
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cam_pinfo devq_entry;
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TAILQ_ENTRY(cam_ed) links;
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struct cam_et *target;
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struct cam_sim *sim;
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lun_id_t lun_id;
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struct cam_ccbq ccbq; /* Queue of pending ccbs */
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struct async_list asyncs; /* Async callback info for this B/T/L */
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struct periph_list periphs; /* All attached devices */
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u_int generation; /* Generation number */
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void *quirk; /* Oddities about this device */
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u_int maxtags;
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u_int mintags;
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cam_proto protocol;
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u_int protocol_version;
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cam_xport transport;
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u_int transport_version;
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struct scsi_inquiry_data inq_data;
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uint8_t *supported_vpds;
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uint8_t supported_vpds_len;
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uint32_t device_id_len;
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uint8_t *device_id;
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uint32_t ext_inq_len;
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uint8_t *ext_inq;
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uint8_t physpath_len;
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uint8_t *physpath; /* physical path string form */
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uint32_t rcap_len;
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uint8_t *rcap_buf;
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struct ata_params ident_data;
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struct mmc_params mmc_ident_data;
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u_int8_t inq_flags; /*
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* Current settings for inquiry flags.
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* This allows us to override settings
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* like disconnection and tagged
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* queuing for a device.
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*/
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u_int8_t queue_flags; /* Queue flags from the control page */
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u_int8_t serial_num_len;
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u_int8_t *serial_num;
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u_int32_t flags;
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#define CAM_DEV_UNCONFIGURED 0x01
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#define CAM_DEV_REL_TIMEOUT_PENDING 0x02
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#define CAM_DEV_REL_ON_COMPLETE 0x04
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#define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
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#define CAM_DEV_TAG_AFTER_COUNT 0x20
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#define CAM_DEV_INQUIRY_DATA_VALID 0x40
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#define CAM_DEV_IN_DV 0x80
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#define CAM_DEV_DV_HIT_BOTTOM 0x100
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#define CAM_DEV_IDENTIFY_DATA_VALID 0x200
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u_int32_t tag_delay_count;
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#define CAM_TAG_DELAY_COUNT 5
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u_int32_t tag_saved_openings;
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u_int32_t refcount;
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struct callout callout;
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STAILQ_ENTRY(cam_ed) highpowerq_entry;
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struct mtx device_mtx;
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struct task device_destroy_task;
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struct nvme_controller_data *nvme_cdata;
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struct nvme_namespace_data *nvme_data;
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};
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/*
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* Each target is represented by an ET (Existing Target). These
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* entries are created when a target is successfully probed with an
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* identify, and removed when a device fails to respond after a number
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* of retries, or a bus rescan finds the device missing.
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*/
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struct cam_et {
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TAILQ_HEAD(, cam_ed) ed_entries;
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TAILQ_ENTRY(cam_et) links;
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struct cam_eb *bus;
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target_id_t target_id;
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u_int32_t refcount;
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u_int generation;
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struct timeval last_reset;
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u_int rpl_size;
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struct scsi_report_luns_data *luns;
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struct mtx luns_mtx; /* Protection for luns field. */
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};
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/*
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* Each bus is represented by an EB (Existing Bus). These entries
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* are created by calls to xpt_bus_register and deleted by calls to
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* xpt_bus_deregister.
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*/
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struct cam_eb {
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TAILQ_HEAD(, cam_et) et_entries;
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TAILQ_ENTRY(cam_eb) links;
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path_id_t path_id;
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struct cam_sim *sim;
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struct timeval last_reset;
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u_int32_t flags;
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#define CAM_EB_RUNQ_SCHEDULED 0x01
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u_int32_t refcount;
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u_int generation;
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device_t parent_dev;
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struct xpt_xport *xport;
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struct mtx eb_mtx; /* Bus topology mutex. */
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};
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struct cam_path {
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struct cam_periph *periph;
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struct cam_eb *bus;
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struct cam_et *target;
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struct cam_ed *device;
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};
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struct cam_ed * xpt_alloc_device(struct cam_eb *bus,
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struct cam_et *target,
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lun_id_t lun_id);
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void xpt_acquire_device(struct cam_ed *device);
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void xpt_release_device(struct cam_ed *device);
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u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
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void xpt_start_tags(struct cam_path *path);
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void xpt_stop_tags(struct cam_path *path);
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MALLOC_DECLARE(M_CAMXPT);
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#endif
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