adw.h revision 1.8
1 /* $NetBSD: adw.h,v 1.8 2000/05/10 21:22:34 dante 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 (at) 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 * ADW_CARRIER must be exactly 16 BYTES 52 * Every adw_carrier structure _MUST_ always be aligned on a 16 bytes boundary 53 */ 54 struct adw_carrier { 55 /* ---------- the microcode wants the field below ---------- */ 56 u_int32_t carr_id; /* Carrier ID */ 57 u_int32_t carr_ba; /* Carrier Bus Address */ 58 u_int32_t areq_ba; /* ADW_SCSI_REQ_Q Bus Address */ 59 /* 60 * next_vpa [31:4] Carrier Physical Next Pointer 61 * 62 * next_vpa [3:1] Reserved Bits 63 * next_vpa [0] Done Flag set in Response Queue. 64 */ 65 u_int32_t next_ba; /* see next_ba flags below */ 66 /* ---------- ---------- */ 67 }; 68 69 typedef struct adw_carrier ADW_CARRIER; 70 71 /* 72 * next_ba flags 73 */ 74 #define ASC_RQ_DONE 0x00000001 75 #define ASC_RQ_GOOD 0x00000002 76 #define ASC_CQ_STOPPER 0x00000000 77 78 /* 79 * Mask used to eliminate low 4 bits of carrier 'next_vpa' field. 80 */ 81 #define ASC_NEXT_BA_MASK 0xFFFFFFF0 82 #define ASC_GET_CARRP(carrp) ((carrp) & ASC_NEXT_BA_MASK) 83 84 85 /* 86 * per request scatter-gather element limit 87 * We could have up to 256 SG lists. 88 */ 89 #define ADW_MAX_SG_LIST 255 90 91 /* 92 * Scatter-Gather Definitions per request. 93 */ 94 95 #define NO_OF_SG_PER_BLOCK 15 96 97 /* Number of SG blocks needed. */ 98 #define ADW_NUM_SG_BLOCK \ 99 ((ADW_MAX_SG_LIST + (NO_OF_SG_PER_BLOCK - 1))/NO_OF_SG_PER_BLOCK) 100 101 102 struct adw_ccb { 103 ADW_SCSI_REQ_Q scsiq; 104 ADW_SG_BLOCK sg_block[ADW_NUM_SG_BLOCK]; 105 106 struct scsipi_sense_data scsi_sense; 107 108 TAILQ_ENTRY(adw_ccb) chain; 109 struct adw_ccb *nexthash; 110 u_int32_t hashkey; 111 112 struct scsipi_xfer *xs; /* the scsipi_xfer for this cmd */ 113 int flags; /* see below */ 114 115 int timeout; 116 /* 117 * This DMA map maps the buffer involved in the transfer. 118 */ 119 bus_dmamap_t dmamap_xfer; 120 }; 121 122 typedef struct adw_ccb ADW_CCB; 123 124 /* flags for ADW_CCB */ 125 #define CCB_ALLOC 0x01 126 #define CCB_ABORTING 0x02 127 #define CCB_ABORTED 0x04 128 129 130 #define ADW_MAX_CARRIER 253 /* Max. number of host commands (253) */ 131 #define ADW_MAX_CCB 63 /* Max. number commands per device (63) */ 132 133 struct adw_control { 134 ADW_CCB ccbs[ADW_MAX_CCB]; /* all our control blocks */ 135 ADW_CARRIER *carriers; /* all our carriers */ 136 }; 137 138 /* 139 * Bus Address of a Carrier. 140 * ba = base_ba + v_address - base_va 141 */ 142 #define ADW_CARRIER_BADDR(sc,x) ((sc)->sc_dmamap_carrier->dm_segs[0].ds_addr + \ 143 (((u_long)x) - ((u_long)(sc)->sc_control->carriers))) 144 /* 145 * Virtual Address of a Carrier. 146 * va = base_va + bus_address - base_ba 147 */ 148 #define ADW_CARRIER_VADDR(sc,x) ((ADW_CARRIER *) \ 149 (((u_int8_t *)(sc)->sc_control->carriers) + \ 150 ((u_long)x) - \ 151 (sc)->sc_dmamap_carrier->dm_segs[0].ds_addr)) 152 /* 153 * Offset of a CCB from the beginning of the control DMA mapping. 154 */ 155 #define ADW_CCB_OFF(c) (offsetof(struct adw_control, ccbs[0]) + \ 156 (((u_long)(c)) - ((u_long)&sc->sc_control->ccbs[0]))) 157 158 /******************************************************************************/ 159 160 int adw_init __P((ADW_SOFTC *sc)); 161 void adw_attach __P((ADW_SOFTC *sc)); 162 int adw_intr __P((void *arg)); 163 ADW_CCB *adw_ccb_phys_kv __P((ADW_SOFTC *, u_int32_t)); 164 ADW_CARRIER *adw_carrier_phys_kv __P((ADW_SOFTC *, u_int32_t)); 165 166 /******************************************************************************/ 167 168 #endif /* _ADVANSYS_ADW_H_ */ 169
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