1 /* $NetBSD: adw.h,v 1.15 2019/12/15 16:48:27 tsutsui Exp $ */ 2 3 /* 4 * Generic driver definitions and exported functions for the Advanced 5 * Systems Inc. SCSI controllers 6 * 7 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 8 * All rights reserved. 9 * 10 * Author: Baldassare Dante Profeta <dante@mclink.it> 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef _ADVANSYS_WIDE_H_ 35 #define _ADVANSYS_WIDE_H_ 36 37 /******************************************************************************/ 38 39 typedef int (* ADW_ISR_CALLBACK) (ADW_SOFTC *, ADW_SCSI_REQ_Q *); 40 typedef void (* ADW_ASYNC_CALLBACK) (ADW_SOFTC *, u_int8_t); 41 42 43 /* 44 * per request scatter-gather element limit 45 * We could have up to 256 SG lists. 46 */ 47 #define ADW_MAX_SG_LIST 255 48 49 /* 50 * Scatter-Gather Definitions per request. 51 */ 52 53 #define NO_OF_SG_PER_BLOCK 15 54 55 /* Number of SG blocks needed. */ 56 #define ADW_NUM_SG_BLOCK \ 57 ((ADW_MAX_SG_LIST + (NO_OF_SG_PER_BLOCK - 1))/NO_OF_SG_PER_BLOCK) 58 59 60 struct adw_ccb { 61 ADW_SCSI_REQ_Q scsiq; 62 ADW_SG_BLOCK sg_block[ADW_NUM_SG_BLOCK]; 63 64 struct scsi_sense_data scsi_sense; 65 66 TAILQ_ENTRY(adw_ccb) chain; 67 struct adw_ccb *nexthash; 68 u_int32_t hashkey; 69 70 struct scsipi_xfer *xs; /* the scsipi_xfer for this cmd */ 71 int flags; /* see below */ 72 73 int timeout; 74 /* 75 * This DMA map maps the buffer involved in the transfer. 76 */ 77 bus_dmamap_t dmamap_xfer; 78 }; 79 80 typedef struct adw_ccb ADW_CCB; 81 82 /* flags for ADW_CCB */ 83 #define CCB_ALLOC 0x01 84 #define CCB_ABORTING 0x02 85 #define CCB_ABORTED 0x04 86 87 88 #define ADW_MAX_CCB 63 /* Max. number commands per device (63) */ 89 90 struct adw_control { 91 ADW_CCB ccbs[ADW_MAX_CCB]; /* all our control blocks */ 92 ADW_CARRIER *carriers; /* all our carriers */ 93 }; 94 95 /* 96 * Offset of a CCB from the beginning of the control DMA mapping. 97 */ 98 #define ADW_CCB_OFF(c) (offsetof(struct adw_control, ccbs[0]) + \ 99 (((u_long)(c)) - ((u_long)&sc->sc_control->ccbs[0]))) 100 101 /******************************************************************************/ 102 103 int adw_init(ADW_SOFTC *); 104 void adw_attach(ADW_SOFTC *); 105 int adw_intr(void *); 106 ADW_CCB *adw_ccb_phys_kv(ADW_SOFTC *, u_int32_t); 107 108 /******************************************************************************/ 109 110 #endif /* _ADVANSYS_ADW_H_ */ 111