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/* $NetBSD: ispvar.h,v 1.4 1997/04/05 02:48:36 mjacob Exp $ */
/*
* Soft Definitions for for Qlogic ISP SCSI adapters.
*
* Copyright (c) 1997 by Matthew Jacob
* NASA/Ames Research Center
* 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 immediately at the beginning of the file, without modification,
* this list of conditions, and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. 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.
*/
#ifndef _ISPVAR_H
#define _ISPVAR_H
#include <dev/ic/ispmbox.h>
/*
* Vector for MD code to provide specific services.
*/
struct ispsoftc;
struct ispmdvec {
u_int16_t (*dv_rd_reg) __P((struct ispsoftc *, int));
void (*dv_wr_reg) __P((struct ispsoftc *, int, u_int16_t));
int (*dv_mbxdma) __P((struct ispsoftc *));
int (*dv_dmaset) __P((struct ispsoftc *,
struct scsi_xfer *, ispreq_t *, u_int8_t *, u_int8_t));
void (*dv_dmaclr)
__P((struct ispsoftc *, struct scsi_xfer *, u_int32_t));
void (*dv_reset0) __P((struct ispsoftc *));
void (*dv_reset1) __P((struct ispsoftc *));
const u_int16_t *dv_ispfw; /* ptr to f/w */
u_int16_t dv_fwlen; /* length of f/w */
u_int16_t dv_codeorg; /* code ORG for f/w */
/*
* Initial values for conf1 register
*/
u_int16_t dv_conf1;
u_int16_t dv_clock; /* clock frequency */
};
#define MAX_TARGETS 16
#define MAX_LUNS 8
#define RQUEST_QUEUE_LEN 256
#define RESULT_QUEUE_LEN (RQUEST_QUEUE_LEN >> 3)
#define QENTRY_LEN 64
#define ISP_QUEUE_ENTRY(q, idx) ((q) + ((idx) * QENTRY_LEN))
#define ISP_QUEUE_SIZE(n) ((n) * QENTRY_LEN)
/*
* Soft Structure per host adapter
*/
struct ispsoftc {
struct device isp_dev;
struct ispmdvec * isp_mdvec;
#define isp_name isp_dev.dv_xname
struct scsi_link isp_link;
u_int8_t isp_max_target;
u_int8_t isp_state;
/*
* Host Adapter Parameters, nominally stored in NVRAM
*/
u_int16_t isp_adapter_enabled : 1,
isp_req_ack_active_neg : 1,
isp_data_line_active_neg: 1,
isp_cmd_dma_burst_enable: 1,
isp_data_dma_burst_enabl: 1,
isp_fifo_threshold : 2,
: 1,
isp_initiator_id : 4,
isp_async_data_setup : 4;
u_int16_t isp_selection_timeout;
u_int16_t isp_max_queue_depth;
u_int8_t isp_tag_aging;
u_int8_t isp_bus_reset_delay;
u_int8_t isp_retry_count;
u_int8_t isp_retry_delay;
struct {
u_int8_t dev_flags; /* Device Flags - see below */
u_int8_t exc_throttle;
u_int8_t sync_period;
u_int8_t sync_offset : 4,
dev_enable : 1;
} isp_devparam[MAX_TARGETS];
/*
* Result and Request Queues.
*/
volatile u_int8_t isp_reqidx; /* index of next request */
volatile u_int8_t isp_residx; /* index of next result */
volatile u_int8_t isp_sendmarker;
volatile u_int8_t isp_seqno;
/*
* Sheer laziness, but it gets us around the problem
* where we don't have a clean way of remembering
* which scsi_xfer is bound to which ISP queue entry.
*
* There are other more clever ways to do this, but,
* jeez, so I blow a couple of KB per host adapter...
* and it *is* faster.
*/
volatile struct scsi_xfer *isp_xflist[RQUEST_QUEUE_LEN];
/*
* request/result queue
*/
volatile caddr_t isp_rquest;
volatile caddr_t isp_result;
u_int32_t isp_rquest_dma;
u_int32_t isp_result_dma;
};
/*
* ISP States
*/
#define ISP_NILSTATE 0
#define ISP_RESETSTATE 1
#define ISP_INITSTATE 2
#define ISP_RUNSTATE 3
/*
* Device Flags
*/
#define DPARM_DISC 0x80
#define DPARM_PARITY 0x40
#define DPARM_WIDE 0x20
#define DPARM_SYNC 0x10
#define DPARM_TQING 0x08
#define DPARM_ARQ 0x04
#define DPARM_QFRZ 0x02
#define DPARM_RENEG 0x01
#define DPARM_DEFAULT (0xff & ~DPARM_QFRZ)
/*
* Macros to read, write ISP registers through MD code
*/
#define ISP_READ(isp, reg) \
(*(isp)->isp_mdvec->dv_rd_reg)((isp), (reg))
#define ISP_WRITE(isp, reg, val) \
(*(isp)->isp_mdvec->dv_wr_reg)((isp), (reg), (val))
#define ISP_MBOXDMASETUP(isp) \
(*(isp)->isp_mdvec->dv_mbxdma)((isp))
#define ISP_DMASETUP(isp, xs, req, iptrp, optr) \
(*(isp)->isp_mdvec->dv_dmaset)((isp), (xs), (req), (iptrp), (optr))
#define ISP_DMAFREE(isp, xs, seqno) \
if ((isp)->isp_mdvec->dv_dmaclr) \
(*(isp)->isp_mdvec->dv_dmaclr)((isp), (xs), (seqno))
#define ISP_RESET0(isp) \
if ((isp)->isp_mdvec->dv_reset0) (*(isp)->isp_mdvec->dv_reset0)((isp))
#define ISP_RESET1(isp) \
if ((isp)->isp_mdvec->dv_reset1) (*(isp)->isp_mdvec->dv_reset1)((isp))
#define ISP_SETBITS(isp, reg, val) \
(*(isp)->isp_mdvec->dv_wr_reg)((isp), (reg), ISP_READ((isp), (reg)) | (val))
#define ISP_CLRBITS(isp, reg, val) \
(*(isp)->isp_mdvec->dv_wr_reg)((isp), (reg), ISP_READ((isp), (reg)) & ~(val))
/*
* Function Prototypes
*/
/*
* Reset Hardware.
*
* Only looks at sc_dev.dv_xname, sc_iot and sc_ioh fields.
*/
void isp_reset __P((struct ispsoftc *));
/*
* Initialize Hardware to known state
*/
void isp_init __P((struct ispsoftc *));
/*
* Complete attachment of Hardware
*/
void isp_attach __P((struct ispsoftc *));
/*
* Free any associated resources prior to decommissioning.
*/
void isp_uninit __P((struct ispsoftc *));
/*
* Interrupt Service Routine
*/
int isp_intr __P((void *));
#endif /* _ISPVAR_H */
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