1 /* $NetBSD: dptvar.h,v 1.8 2001/04/25 17:53:32 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1999, 2000, 2001 Andrew Doran <ad@netbsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 */ 29 30 #ifndef _IC_DPTVAR_H_ 31 #define _IC_DPTVAR_H_ 1 32 33 /* Software parameters */ 34 #define DPT_SG_SIZE 17 35 #define DPT_MAX_XFER 65536 36 #define DPT_MAX_CCBS 256 37 #define DPT_ABORT_TIMEOUT 2000 /* milliseconds */ 38 #define DPT_SCRATCH_SIZE 256 /* bytes */ 39 40 #define CCB_OFF(sc,m) ((u_long)(m) - (u_long)((sc)->sc_ccbs)) 41 42 #define CCB_ABORT 0x01 /* abort has been issued on this CCB */ 43 #define CCB_INTR 0x02 /* HBA interrupted for this CCB */ 44 #define CCB_PRIVATE 0x04 /* ours; don't talk to scsipi when done */ 45 46 struct dpt_ccb { 47 /* Data that will be touched by the HBA */ 48 struct eata_cp ccb_eata_cp; /* EATA command packet */ 49 struct eata_sg ccb_sg[DPT_SG_SIZE]; /* SG element list */ 50 struct scsipi_sense_data ccb_sense; /* SCSI sense data on error */ 51 52 /* Data that will not be touched by the HBA */ 53 volatile int ccb_flg; /* CCB flags */ 54 int ccb_timeout; /* timeout in ms */ 55 u_int32_t ccb_ccbpa; /* physical addr of this CCB */ 56 bus_dmamap_t ccb_dmamap_xfer; /* dmamap for data xfers */ 57 int ccb_hba_status; /* from status packet */ 58 int ccb_scsi_status; /* from status packet */ 59 int ccb_id; /* unique ID of this CCB */ 60 SLIST_ENTRY(dpt_ccb) ccb_chain; /* link to next CCB */ 61 struct scsipi_xfer *ccb_xs; /* initiating SCSI command */ 62 }; 63 64 struct dpt_softc { 65 struct device sc_dv; /* generic device data */ 66 struct scsipi_adapter sc_adapt; /* scsipi adapter */ 67 struct scsipi_channel sc_chans[3]; /* each channel */ 68 bus_space_handle_t sc_ioh; /* bus space handle */ 69 bus_space_tag_t sc_iot; /* bus space tag */ 70 bus_dma_tag_t sc_dmat; /* bus DMA tag */ 71 bus_dmamap_t sc_dmamap; /* maps the CCBs */ 72 void *sc_ih; /* interrupt handler cookie */ 73 struct dpt_ccb *sc_ccbs; /* all our CCBs */ 74 struct eata_sp *sc_stp; /* EATA status packet */ 75 int sc_stpoff; /* status packet offset in dmamap */ 76 u_int32_t sc_stppa; /* status packet physical address */ 77 caddr_t sc_scr; /* scratch area */ 78 int sc_scroff; /* scratch area offset in dmamap */ 79 u_int32_t sc_scrpa; /* scratch area physical address */ 80 int sc_hbaid[3]; /* ID of HBA on each channel */ 81 int sc_nccbs; /* number of CCBs available */ 82 SLIST_HEAD(, dpt_ccb) sc_ccb_free;/* free ccb list */ 83 struct eata_cfg sc_ec; /* EATA configuration data */ 84 }; 85 86 void dpt_init(struct dpt_softc *, const char *); 87 int dpt_intr(void *); 88 int dpt_readcfg(struct dpt_softc *); 89 90 #endif /* !defined _IC_DPTVAR_H_ */ 91