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Diffstat (limited to 'share/examples/scsi_target/scsi_target.h')
| -rw-r--r-- | share/examples/scsi_target/scsi_target.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/share/examples/scsi_target/scsi_target.h b/share/examples/scsi_target/scsi_target.h new file mode 100644 index 000000000000..3d94810d149c --- /dev/null +++ b/share/examples/scsi_target/scsi_target.h @@ -0,0 +1,129 @@ +/* + * SCSI Target Emulator + * + * Copyright (c) 2002 Nate Lawson. + * 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, immediately at the beginning of the file. + * 2. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _SCSI_TARGET_H +#define _SCSI_TARGET_H + +/* + * Maximum number of parallel commands to accept, + * 1024 for Fibre Channel (SPI is 16). + */ +#define MAX_INITIATORS 1024 +#define SECTOR_SIZE 512 +#define MAX_EVENTS (MAX_INITIATORS + 5) + /* kqueue for AIO, signals */ + +/* Additional SCSI 3 defines for inquiry response */ +#define SID_Addr16 0x0100 + +TAILQ_HEAD(io_queue, ccb_hdr); + +/* Offset into the private CCB area for storing our descriptor */ +#define targ_descr periph_priv.entries[1].ptr + +/* Descriptor attached to each ATIO */ +struct atio_descr { + off_t base_off; /* Base offset for ATIO */ + uint total_len; /* Total xfer len for this ATIO */ + uint init_req; /* Transfer count requested to/from init */ + uint init_ack; /* Data transferred ok to/from init */ + uint targ_req; /* Transfer count requested to/from target */ + uint targ_ack; /* Data transferred ok to/from target */ + int flags; /* Flags for CTIOs */ + u_int8_t *cdb; /* Pointer to received CDB */ + /* List of completed AIO/CTIOs */ + struct io_queue cmplt_io; +}; + +typedef enum { + ATIO_WORK, + AIO_DONE, + CTIO_DONE +} io_ops; + +/* Descriptor attached to each CTIO */ +struct ctio_descr { + void *buf; /* Backing store */ + off_t offset; /* Position in transfer (for file, */ + /* doesn't start at 0) */ + struct aiocb aiocb; /* AIO descriptor for this CTIO */ + struct ccb_accept_tio *atio; + /* ATIO we are satisfying */ + io_ops event; /* Event that queued this CTIO */ +}; + +typedef enum { + UA_NONE = 0x00, + UA_POWER_ON = 0x01, + UA_BUS_RESET = 0x02, + UA_BDR = 0x04 +} ua_types; + +typedef enum { + CA_NONE = 0x00, + CA_UNIT_ATTN = 0x01, + CA_CMD_SENSE = 0x02 +} ca_types; + +struct initiator_state { + ua_types orig_ua; + ca_types orig_ca; + ua_types pending_ua; + ca_types pending_ca; + struct scsi_sense_data sense_data; +}; + +/* Global functions */ +extern cam_status tcmd_init(u_int16_t req_inq_flags, + u_int16_t sim_inq_flags); +extern int tcmd_handle(struct ccb_accept_tio *atio, + struct ccb_scsiio *ctio, io_ops event); +extern void tcmd_sense(u_int init_id, struct ccb_scsiio *ctio, + u_int8_t flags, + u_int8_t asc, u_int8_t ascq); +extern void tcmd_ua(u_int init_id, ua_types new_ua); +extern int work_atio(struct ccb_accept_tio *atio); +extern void send_ccb(union ccb *ccb, int priority); +extern void free_ccb(union ccb *ccb); +static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); } + +/* Global Data */ +extern int notaio; + +/* + * Compat Defines + */ +#if __FreeBSD_version >= 500000 +#define OFF_FMT "%ju" +#else +#define OFF_FMT "%llu" +#endif + +#endif /* _SCSI_TARGET_H */ |