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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_SCSI_ADAPTERS_FASCMD_H
#define _SYS_SCSI_ADAPTERS_FASCMD_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/note.h>
#include <sys/isa_defs.h>
#include <sys/scsi/scsi_types.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* The transport layer deals with things in terms of the following structure.
* Note that the target driver's view of things is the scsi_pkt that is
* enfolded as the first element of the following structure.
*
* the preferred the cdb size is 12. fas is a scsi2 HBA driver and
* rarely needs 16 byte cdb's
*/
/*
* preferred pkt_private length in 64-bit quantities
*/
#ifdef _LP64
#define PKT_PRIV_SIZE 2
#define PKT_PRIV_LEN 16 /* in bytes */
#else /* _ILP32 */
#define PKT_PRIV_SIZE 1
#define PKT_PRIV_LEN 8 /* in bytes */
#endif
#define PKT2CMD(pkt) ((struct fas_cmd *)(pkt)->pkt_ha_private)
#define CMD2PKT(sp) ((sp)->cmd_pkt)
#define EXTCMD_SIZE (sizeof (struct fas_cmd) + scsi_pkt_size())
#define EXTCMDS_STATUS_SIZE (sizeof (struct scsi_arq_status))
struct fas_cmd {
struct scsi_pkt *cmd_pkt; /* the generic packet itself */
struct fas_cmd *cmd_forw; /* ready fifo que link */
uchar_t *cmd_cdbp; /* active command pointer */
uint32_t cmd_data_count; /* aggregate data count */
uint32_t cmd_cur_addr; /* current dma address */
ushort_t cmd_qfull_retries;
ushort_t cmd_nwin; /* number of windows */
ushort_t cmd_cur_win; /* current window */
ushort_t cmd_saved_win; /* saved window */
uint32_t cmd_saved_data_count; /* saved aggr. count */
uint32_t cmd_saved_cur_addr; /* saved virt address */
int cmd_pkt_flags; /* copy of pkt_flags */
ddi_dma_handle_t cmd_dmahandle; /* dma handle */
ddi_dma_cookie_t cmd_dmacookie; /* current dma cookie */
uint32_t cmd_dmacount; /* total xfer count */
uchar_t cmd_cdb[CDB_SIZE]; /* 12 byte cdb */
uint_t cmd_flags; /* private flags */
struct scsi_arq_status cmd_scb;
uint_t cmd_scblen; /* length of scb */
uchar_t cmd_slot;
uchar_t cmd_age; /* cmd age (tagged queing) */
uint_t cmd_cdblen; /* length of cdb */
uint64_t cmd_pkt_private[PKT_PRIV_SIZE];
uint_t cmd_privlen; /* length of tgt private */
uchar_t cmd_tag[2]; /* command tag */
uchar_t cmd_actual_cdblen; /* length of cdb */
};
_NOTE(SCHEME_PROTECTS_DATA("unique per pkt", fas_cmd))
/*
* private data for arq pkt
*/
struct arq_private_data {
struct buf *arq_save_bp;
struct fas_cmd *arq_save_sp;
};
/*
* A note about the cmd_cdb && cmd_scb structures:
*
* If the command allocation requested exceeds the size of CDB_SIZE,
* the cdb will be allocated outside this structure (via kmem_zalloc)
* The same applies to cmd_scb.
*/
/*
* These are the defined flags for this structure.
*/
#define CFLAG_CMDDISC 0x0001 /* cmd currently disconnected */
#define CFLAG_WATCH 0x0002 /* watchdog time for this command */
#define CFLAG_FINISHED 0x0004 /* command completed */
#define CFLAG_CHKSEG 0x0008 /* check cmd_data within seg */
#define CFLAG_COMPLETED 0x0010 /* completion routine called */
#define CFLAG_PREPARED 0x0020 /* pkt has been init'ed */
#define CFLAG_IN_TRANSPORT 0x0040 /* in use by host adapter driver */
#define CFLAG_RESTORE_PTRS 0x0080 /* implicit restore ptr on reconnect */
#define CFLAG_TRANFLAG 0x00ff /* covers transport part of flags */
#define CFLAG_CMDPROXY 0x000100 /* cmd is a 'proxy' command */
#define CFLAG_CMDARQ 0x000200 /* cmd is a 'rqsense' command */
#define CFLAG_DMAVALID 0x000400 /* dma mapping valid */
#define CFLAG_DMASEND 0x000800 /* data is going 'out' */
#define CFLAG_CMDIOPB 0x001000 /* this is an 'iopb' packet */
#define CFLAG_CDBEXTERN 0x002000 /* cdb kmem_alloc'd */
#define CFLAG_SCBEXTERN 0x004000 /* scb kmem_alloc'd */
#define CFLAG_FREE 0x008000 /* packet is on free list */
#define CFLAG_PRIVEXTERN 0x020000 /* target private kmem_alloc'd */
#define CFLAG_DMA_PARTIAL 0x040000 /* partial xfer OK */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SCSI_ADAPTERS_FASCMD_H */
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