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Annotation of sys/dev/ic/adw.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: adw.h,v 1.9 2002/03/14 01:26:53 millert Exp $ */
                      2: /*      $NetBSD: adw.h,v 1.9 2000/05/26 15:13:43 dante Exp $        */
                      3:
                      4: /*
                      5:  * Generic driver definitions and exported functions for the Advanced
                      6:  * Systems Inc. SCSI controllers
                      7:  *
                      8:  * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
                      9:  * All rights reserved.
                     10:  *
                     11:  * Author: Baldassare Dante Profeta <dante@mclink.it>
                     12:  *
                     13:  * Redistribution and use in source and binary forms, with or without
                     14:  * modification, are permitted provided that the following conditions
                     15:  * are met:
                     16:  * 1. Redistributions of source code must retain the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer.
                     18:  * 2. Redistributions in binary form must reproduce the above copyright
                     19:  *    notice, this list of conditions and the following disclaimer in the
                     20:  *    documentation and/or other materials provided with the distribution.
                     21:  * 3. All advertising materials mentioning features or use of this software
                     22:  *    must display the following acknowledgement:
                     23:  *        This product includes software developed by the NetBSD
                     24:  *        Foundation, Inc. and its contributors.
                     25:  * 4. Neither the name of The NetBSD Foundation nor the names of its
                     26:  *    contributors may be used to endorse or promote products derived
                     27:  *    from this software without specific prior written permission.
                     28:  *
                     29:  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
                     30:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     31:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     32:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
                     33:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     34:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     35:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     36:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     37:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     38:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     39:  * POSSIBILITY OF SUCH DAMAGE.
                     40:  */
                     41:
                     42: #ifndef _ADVANSYS_WIDE_H_
                     43: #define _ADVANSYS_WIDE_H_
                     44:
                     45: /******************************************************************************/
                     46:
                     47: typedef int (* ADW_ISR_CALLBACK) (ADW_SOFTC *, ADW_SCSI_REQ_Q *);
                     48: typedef void (* ADW_ASYNC_CALLBACK) (ADW_SOFTC *, u_int8_t);
                     49:
                     50:
                     51: /*
                     52:  * per request scatter-gather element limit
                     53:  * We could have up to 256 SG lists.
                     54:  */
                     55: #define ADW_MAX_SG_LIST                255
                     56:
                     57: /*
                     58:  * Scatter-Gather Definitions per request.
                     59:  */
                     60:
                     61: #define NO_OF_SG_PER_BLOCK     15
                     62:
                     63: /* Number of SG blocks needed. */
                     64: #define ADW_NUM_SG_BLOCK \
                     65:        ((ADW_MAX_SG_LIST + (NO_OF_SG_PER_BLOCK - 1))/NO_OF_SG_PER_BLOCK)
                     66:
                     67:
                     68: struct adw_ccb {
                     69:        ADW_SCSI_REQ_Q          scsiq;
                     70:        ADW_SG_BLOCK            sg_block[ADW_NUM_SG_BLOCK];
                     71:
                     72:        struct scsi_sense_data  scsi_sense;
                     73:
                     74:        TAILQ_ENTRY(adw_ccb)    chain;
                     75:        struct adw_ccb          *nexthash;
                     76:        u_int32_t               hashkey;
                     77:
                     78:        struct scsi_xfer        *xs;    /* the scsi_xfer for this cmd */
                     79:        int                     flags;  /* see below */
                     80:
                     81:        int                     timeout;
                     82:
                     83:        /*
                     84:         * This DMA map maps the buffer involved in the transfer.
                     85:         */
                     86:        bus_dmamap_t            dmamap_xfer;
                     87: };
                     88:
                     89: typedef struct adw_ccb ADW_CCB;
                     90:
                     91: /* flags for ADW_CCB */
                     92: #define CCB_ALLOC      0x01
                     93: #define CCB_ABORTING   0x02
                     94: #define CCB_ABORTED    0x04
                     95:
                     96:
                     97: #define ADW_MAX_CCB    63      /* Max. number commands per device (63) */
                     98:
                     99: struct adw_control {
                    100:        ADW_CCB         ccbs[ADW_MAX_CCB];      /* all our control blocks */
                    101:        ADW_CARRIER     *carriers;              /* all our carriers */
                    102: };
                    103:
                    104: /*
                    105:  * Offset of a CCB from the beginning of the control DMA mapping.
                    106:  */
                    107: #define        ADW_CCB_OFF(c)  (offsetof(struct adw_control, ccbs[0]) +        \
                    108:                    (((u_long)(c)) - ((u_long)&sc->sc_control->ccbs[0])))
                    109:
                    110: /******************************************************************************/
                    111:
                    112: int adw_init(ADW_SOFTC *sc);
                    113: void adw_attach(ADW_SOFTC *sc);
                    114: int adw_intr(void *arg);
                    115: ADW_CCB *adw_ccb_phys_kv(ADW_SOFTC *, u_int32_t);
                    116:
                    117: /******************************************************************************/
                    118:
                    119: #endif /* _ADVANSYS_ADW_H_ */