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/* $OpenBSD: adw.h,v 1.4 2000/04/29 20:15:59 krw Exp $ */
/* $NetBSD: adw.h,v 1.5 2000/02/03 20:29:15 dante Exp $ */
/*
* Generic driver definitions and exported functions for the Advanced
* Systems Inc. SCSI controllers
*
* Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Author: Baldassare Dante Profeta <dante@mclink.it>
*
* 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.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _ADVANSYS_WIDE_H_
#define _ADVANSYS_WIDE_H_
/******************************************************************************/
typedef int (* ADW_ISR_CALLBACK) (ADW_SOFTC *, ADW_SCSI_REQ_Q *);
typedef void (* ADW_ASYNC_CALLBACK) (ADW_SOFTC *, u_int8_t);
/*
* Every adw_carrier structure _MUST_ always be aligned on a 16 bytes boundary
*/
struct adw_carrier {
/* ---------- the microcode wants the field below ---------- */
u_int32_t unused; /* Carrier Virtual Address -UNUSED- */
u_int32_t carr_pa; /* Carrier Physical Address */
u_int32_t areq_vpa; /* ADW_SCSI_REQ_Q Physical Address */
/*
* next_vpa [31:4] Carrier Physical Next Pointer
*
* next_vpa [3:1] Reserved Bits
* next_vpa [0] Done Flag set in Response Queue.
*/
u_int32_t next_vpa;
/* ---------- ---------- */
struct adw_carrier *nexthash; /* Carrier Virtual Address */
int id;
/*
* This DMA map maps the buffer involved in the carrier transfer.
*/
// bus_dmamap_t dmamap_xfer;
};
typedef struct adw_carrier ADW_CARRIER;
#define ADW_CARRIER_SIZE ((((int)((sizeof(ADW_CARRIER)-1)/16))+1)*16)
/*
* Mask used to eliminate low 4 bits of carrier 'next_vpa' field.
*/
#define ASC_NEXT_VPA_MASK 0xFFFFFFF0
#define ASC_RQ_DONE 0x00000001
#define ASC_CQ_STOPPER 0x00000000
#define ASC_GET_CARRP(carrp) ((carrp) & ASC_NEXT_VPA_MASK)
/*
* per request scatter-gather element limit
* We could have up to 256 SG lists.
*/
#define ADW_MAX_SG_LIST 255
/*
* Scatter-Gather Definitions per request.
*/
#define NO_OF_SG_PER_BLOCK 15
/* Number of SG blocks needed. */
#define ADW_NUM_SG_BLOCK \
((ADW_MAX_SG_LIST + (NO_OF_SG_PER_BLOCK - 1))/NO_OF_SG_PER_BLOCK)
struct adw_ccb {
ADW_SCSI_REQ_Q scsiq;
ADW_SG_BLOCK sg_block[ADW_NUM_SG_BLOCK];
ADW_CARRIER *carr_list; /* carriers involved */
struct scsi_sense_data scsi_sense;
TAILQ_ENTRY(adw_ccb) chain;
struct adw_ccb *nexthash;
u_int32_t hashkey;
struct scsi_xfer *xs; /* the scsi_xfer for this cmd */
int flags; /* see below */
int timeout;
/*
* This DMA map maps the buffer involved in the transfer.
*/
bus_dmamap_t dmamap_xfer;
};
typedef struct adw_ccb ADW_CCB;
/* flags for ADW_CCB */
#define CCB_ALLOC 0x01
#define CCB_ABORTING 0x02
#define CCB_ABORTED 0x04
#define ADW_MAX_CARRIER 20 /* Max. number of host commands (253) */
#define ADW_MAX_CCB 16 /* Max. number commands per device (63) */
struct adw_control {
ADW_CCB ccbs[ADW_MAX_CCB]; /* all our control blocks */
ADW_CARRIER *carriers; /* all our carriers */
bus_dmamap_t dmamap_xfer;
};
/*
* Offset of a carrier from the beginning of the carriers DMA mapping.
*/
#define ADW_CARRIER_ADDR(sc, x) ((sc)->sc_dmamap_carrier->dm_segs[0].ds_addr + \
(((u_long)x) - ((u_long)(sc)->sc_control->carriers)))
/*
* Offset of a CCB from the beginning of the control DMA mapping.
*/
#define ADW_CCB_OFF(c) (offsetof(struct adw_control, ccbs[0]) + \
(((u_long)(c)) - ((u_long)&sc->sc_control->ccbs[0])))
/******************************************************************************/
int adw_init __P((ADW_SOFTC *sc));
void adw_attach __P((ADW_SOFTC *sc));
int adw_intr __P((void *arg));
ADW_CCB *adw_ccb_phys_kv __P((ADW_SOFTC *, u_int32_t));
ADW_CARRIER *adw_carrier_phys_kv __P((ADW_SOFTC *, u_int32_t));
/******************************************************************************/
#endif /* _ADVANSYS_ADW_H_ */
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