| 1 | /* $NetBSD: adw.h,v 1.14 2005/12/11 12:21:25 christos 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 | * 3. All advertising materials mentioning features or use of this software |
| 21 | * must display the following acknowledgement: |
| 22 | * This product includes software developed by the NetBSD |
| 23 | * Foundation, Inc. and its contributors. |
| 24 | * 4. Neither the name of The NetBSD Foundation nor the names of its |
| 25 | * contributors may be used to endorse or promote products derived |
| 26 | * from this software without specific prior written permission. |
| 27 | * |
| 28 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 29 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 30 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 31 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 32 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 33 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 34 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 35 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 36 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 37 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 38 | * POSSIBILITY OF SUCH DAMAGE. |
| 39 | */ |
| 40 | |
| 41 | #ifndef _ADVANSYS_WIDE_H_ |
| 42 | #define _ADVANSYS_WIDE_H_ |
| 43 | |
| 44 | /******************************************************************************/ |
| 45 | |
| 46 | typedef int (* ADW_ISR_CALLBACK) (ADW_SOFTC *, ADW_SCSI_REQ_Q *); |
| 47 | typedef void (* ADW_ASYNC_CALLBACK) (ADW_SOFTC *, u_int8_t); |
| 48 | |
| 49 | |
| 50 | /* |
| 51 | * per request scatter-gather element limit |
| 52 | * We could have up to 256 SG lists. |
| 53 | */ |
| 54 | #define ADW_MAX_SG_LIST 255 |
| 55 | |
| 56 | /* |
| 57 | * Scatter-Gather Definitions per request. |
| 58 | */ |
| 59 | |
| 60 | #define NO_OF_SG_PER_BLOCK 15 |
| 61 | |
| 62 | /* Number of SG blocks needed. */ |
| 63 | #define ADW_NUM_SG_BLOCK \ |
| 64 | ((ADW_MAX_SG_LIST + (NO_OF_SG_PER_BLOCK - 1))/NO_OF_SG_PER_BLOCK) |
| 65 | |
| 66 | |
| 67 | struct adw_ccb { |
| 68 | ADW_SCSI_REQ_Q scsiq; |
| 69 | ADW_SG_BLOCK sg_block[ADW_NUM_SG_BLOCK]; |
| 70 | |
| 71 | struct scsi_sense_data scsi_sense; |
| 72 | |
| 73 | TAILQ_ENTRY(adw_ccb) chain; |
| 74 | struct adw_ccb *nexthash; |
| 75 | u_int32_t hashkey; |
| 76 | |
| 77 | struct scsipi_xfer *xs; /* the scsipi_xfer for this cmd */ |
| 78 | int flags; /* see below */ |
| 79 | |
| 80 | int timeout; |
| 81 | /* |
| 82 | * This DMA map maps the buffer involved in the transfer. |
| 83 | */ |
| 84 | bus_dmamap_t dmamap_xfer; |
| 85 | }; |
| 86 | |
| 87 | typedef struct adw_ccb ADW_CCB; |
| 88 | |
| 89 | /* flags for ADW_CCB */ |
| 90 | #define CCB_ALLOC 0x01 |
| 91 | #define CCB_ABORTING 0x02 |
| 92 | #define CCB_ABORTED 0x04 |
| 93 | |
| 94 | |
| 95 | #define ADW_MAX_CCB 63 /* Max. number commands per device (63) */ |
| 96 | |
| 97 | struct adw_control { |
| 98 | ADW_CCB ccbs[ADW_MAX_CCB]; /* all our control blocks */ |
| 99 | ADW_CARRIER *carriers; /* all our carriers */ |
| 100 | }; |
| 101 | |
| 102 | /* |
| 103 | * Offset of a CCB from the beginning of the control DMA mapping. |
| 104 | */ |
| 105 | #define ADW_CCB_OFF(c) (offsetof(struct adw_control, ccbs[0]) + \ |
| 106 | (((u_long)(c)) - ((u_long)&sc->sc_control->ccbs[0]))) |
| 107 | |
| 108 | /******************************************************************************/ |
| 109 | |
| 110 | int adw_init(ADW_SOFTC *); |
| 111 | void adw_attach(ADW_SOFTC *); |
| 112 | int adw_intr(void *); |
| 113 | ADW_CCB *adw_ccb_phys_kv(ADW_SOFTC *, u_int32_t); |
| 114 | |
| 115 | /******************************************************************************/ |
| 116 | |
| 117 | #endif /* _ADVANSYS_ADW_H_ */ |
| 118 | |