Remove *_MATCH_NONE enums, making no sense and so never used. Make *_MATCH_ANY enums 0 (no any match flags set), previously used by *_MATCH_NONE. Bump CAM_VERSION to 0x1a reflecting those changes and add compat shims. When traversing through buses and devices do not descend if we can already see that requested pattern does not match the bus or device. It allows to save significant amount of time on system with thousands of disks when doing limited searches. Reviewed by: imp MFC after: 2 weeks Sponsored by: iXsystems, Inc. Differential Revision: https://reviews.freebsd.org/D32304
232 lines
8.2 KiB
C
232 lines
8.2 KiB
C
/*-
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* CAM ioctl compatibility shims
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*
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2013 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_COMPAT_H
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#define _CAM_CAM_COMPAT_H
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/* No user-serviceable parts in here. */
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#ifdef _KERNEL
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int cam_compat_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
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struct thread *td, int(*cbfnp)(struct cdev *, u_long, caddr_t, int,
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struct thread *));
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/* Version 0x16 compatibility */
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#define CAM_VERSION_0x16 0x16
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/* The size of the union ccb didn't change when going to 0x17 */
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#define CAMIOCOMMAND_0x16 _IOC(IOC_INOUT, CAM_VERSION_0x16, 2, CAM_0X17_LEN)
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#define CAMGETPASSTHRU_0x16 _IOC(IOC_INOUT, CAM_VERSION_0x16, 3, CAM_0X17_LEN)
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#define CAM_SCATTER_VALID_0x16 0x00000010
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#define CAM_SG_LIST_PHYS_0x16 0x00040000
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#define CAM_DATA_PHYS_0x16 0x00200000
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/* Version 0x17 compatibility */
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#define CAM_VERSION_0x17 0x17
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struct ccb_hdr_0x17 {
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cam_pinfo pinfo; /* Info for priority scheduling */
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camq_entry xpt_links; /* For chaining in the XPT layer */
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camq_entry sim_links; /* For chaining in the SIM layer */
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camq_entry periph_links; /* For chaining in the type driver */
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u_int32_t retry_count;
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void (*cbfcnp)(struct cam_periph *, union ccb *);
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xpt_opcode func_code; /* XPT function code */
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u_int32_t status; /* Status returned by CAM subsystem */
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struct cam_path *path; /* Compiled path for this ccb */
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path_id_t path_id; /* Path ID for the request */
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target_id_t target_id; /* Target device ID */
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u_int target_lun; /* Target LUN number */
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u_int32_t flags; /* ccb_flags */
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ccb_ppriv_area periph_priv;
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ccb_spriv_area sim_priv;
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u_int32_t timeout; /* Hard timeout value in seconds */
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struct callout *timeout_ch;
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};
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struct ccb_pathinq_0x17 {
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struct ccb_hdr_0x17 ccb_h;
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u_int8_t version_num; /* Version number for the SIM/HBA */
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u_int8_t hba_inquiry; /* Mimic of INQ byte 7 for the HBA */
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u_int8_t target_sprt; /* Flags for target mode support */
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u_int8_t hba_misc; /* Misc HBA features */
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u_int16_t hba_eng_cnt; /* HBA engine count */
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/* Vendor Unique capabilities */
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u_int8_t vuhba_flags[VUHBALEN];
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u_int32_t max_target; /* Maximum supported Target */
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u_int32_t max_lun; /* Maximum supported Lun */
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u_int32_t async_flags; /* Installed Async handlers */
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path_id_t hpath_id; /* Highest Path ID in the subsystem */
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target_id_t initiator_id; /* ID of the HBA on the SCSI bus */
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char sim_vid[SIM_IDLEN]; /* Vendor ID of the SIM */
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char hba_vid[HBA_IDLEN]; /* Vendor ID of the HBA */
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char dev_name[DEV_IDLEN];/* Device name for SIM */
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u_int32_t unit_number; /* Unit number for SIM */
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u_int32_t bus_id; /* Bus ID for SIM */
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u_int32_t base_transfer_speed;/* Base bus speed in KB/sec */
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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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union {
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struct ccb_pathinq_settings_spi spi;
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struct ccb_pathinq_settings_fc fc;
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struct ccb_pathinq_settings_sas sas;
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char ccb_pathinq_settings_opaque[PATHINQ_SETTINGS_SIZE];
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} xport_specific;
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u_int maxio; /* Max supported I/O size, in bytes. */
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u_int16_t hba_vendor; /* HBA vendor ID */
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u_int16_t hba_device; /* HBA device ID */
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u_int16_t hba_subvendor; /* HBA subvendor ID */
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u_int16_t hba_subdevice; /* HBA subdevice ID */
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};
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struct ccb_trans_settings_0x17 {
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struct ccb_hdr_0x17 ccb_h;
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cts_type type; /* Current or User settings */
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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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union {
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u_int valid; /* Which fields to honor */
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struct ccb_trans_settings_ata ata;
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struct ccb_trans_settings_scsi scsi;
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} proto_specific;
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union {
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u_int valid; /* Which fields to honor */
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struct ccb_trans_settings_spi spi;
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struct ccb_trans_settings_fc fc;
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struct ccb_trans_settings_sas sas;
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struct ccb_trans_settings_pata ata;
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struct ccb_trans_settings_sata sata;
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} xport_specific;
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};
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#define CAM_0X17_DATA_LEN CAM_0X18_DATA_LEN
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#define CAM_0X17_LEN (sizeof(struct ccb_hdr_0x17) + CAM_0X17_DATA_LEN)
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#define CAMIOCOMMAND_0x17 _IOC(IOC_INOUT, CAM_VERSION_0x17, 2, CAM_0X17_LEN)
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#define CAMGETPASSTHRU_0x17 _IOC(IOC_INOUT, CAM_VERSION_0x17, 3, CAM_0X17_LEN)
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/* Version 0x18 compatibility */
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#define CAM_VERSION_0x18 0x18
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struct ccb_hdr_0x18 {
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cam_pinfo pinfo; /* Info for priority scheduling */
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camq_entry xpt_links; /* For chaining in the XPT layer */
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camq_entry sim_links; /* For chaining in the SIM layer */
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camq_entry periph_links; /* For chaining in the type driver */
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u_int32_t retry_count;
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void (*cbfcnp)(struct cam_periph *, union ccb *);
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xpt_opcode func_code; /* XPT function code */
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u_int32_t status; /* Status returned by CAM subsystem */
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struct cam_path *path; /* Compiled path for this ccb */
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path_id_t path_id; /* Path ID for the request */
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target_id_t target_id; /* Target device ID */
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u_int target_lun; /* Target LUN number */
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u_int64_t ext_lun; /* 64-bit LUN, more or less */
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u_int32_t flags; /* ccb_flags */
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u_int32_t xflags; /* extended ccb_flags */
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ccb_ppriv_area periph_priv;
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ccb_spriv_area sim_priv;
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ccb_qos_area qos;
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u_int32_t timeout; /* Hard timeout value in seconds */
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struct timeval softtimeout; /* Soft timeout value in sec + usec */
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};
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typedef enum {
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CAM_EXTLUN_VALID_0x18 = 0x00000001,/* 64bit lun field is valid */
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} ccb_xflags_0x18;
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struct ccb_trans_settings_0x18 {
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struct ccb_hdr_0x18 ccb_h;
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cts_type type; /* Current or User settings */
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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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union {
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u_int valid; /* Which fields to honor */
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struct ccb_trans_settings_ata ata;
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struct ccb_trans_settings_scsi scsi;
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} proto_specific;
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union {
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u_int valid; /* Which fields to honor */
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struct ccb_trans_settings_spi spi;
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struct ccb_trans_settings_fc fc;
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struct ccb_trans_settings_sas sas;
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struct ccb_trans_settings_pata ata;
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struct ccb_trans_settings_sata sata;
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} xport_specific;
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};
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struct dev_match_result_0x18 {
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dev_match_type type;
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union {
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struct {
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char periph_name[DEV_IDLEN];
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u_int32_t unit_number;
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path_id_t path_id;
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target_id_t target_id;
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u_int target_lun;
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} periph_result;
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struct {
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path_id_t path_id;
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target_id_t target_id;
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u_int target_lun;
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cam_proto protocol;
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struct scsi_inquiry_data inq_data;
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struct ata_params ident_data;
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dev_result_flags flags;
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} device_result;
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struct bus_match_result bus_result;
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} result;
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};
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#define CAM_0X18_DATA_LEN (sizeof(union ccb) - 2*sizeof(void *) - sizeof(struct ccb_hdr))
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#define CAM_0X18_LEN (sizeof(struct ccb_hdr_0x18) + CAM_0X18_DATA_LEN)
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#define CAMIOCOMMAND_0x18 _IOC(IOC_INOUT, CAM_VERSION_0x18, 2, CAM_0X18_LEN)
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#define CAMGETPASSTHRU_0x18 _IOC(IOC_INOUT, CAM_VERSION_0x18, 3, CAM_0X18_LEN)
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/* Version 0x19 compatibility */
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#define CAM_VERSION_0x19 0x19
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#define CAMIOCOMMAND_0x19 _IOWR(CAM_VERSION_0x19, 2, union ccb)
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#define CAMGETPASSTHRU_0x19 _IOWR(CAM_VERSION_0x19, 3, union ccb)
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#define CAMIOQUEUE_0x19 _IO(CAM_VERSION_0x19, 4)
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#define CAMIOGET_0x19 _IO(CAM_VERSION_0x19, 5)
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#endif
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#endif
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