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Annotation of sys/dev/ic/twevar.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: twevar.h,v 1.7 2005/09/15 05:33:39 krw Exp $  */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 2000 Michael Shalayeff
        !             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 ``AS IS'' AND ANY EXPRESS OR
        !            17:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            18:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            19:  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
        !            20:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        !            21:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        !            22:  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            23:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
        !            24:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
        !            25:  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
        !            26:  * THE POSSIBILITY OF SUCH DAMAGE.
        !            27:  */
        !            28:
        !            29: struct twe_softc;
        !            30:
        !            31: struct twe_ccb {
        !            32:        struct twe_softc        *ccb_sc;
        !            33:        struct twe_cmd          *ccb_cmd;
        !            34:        struct scsi_xfer        *ccb_xs;
        !            35:        paddr_t                 ccb_cmdpa;
        !            36:        TAILQ_ENTRY(twe_ccb)    ccb_link;
        !            37:        enum {
        !            38:                TWE_CCB_FREE, TWE_CCB_READY, TWE_CCB_QUEUED, TWE_CCB_PREQUEUED,
        !            39:                TWE_CCB_DONE
        !            40:        } ccb_state;
        !            41:        int                     ccb_length;
        !            42:        void                    *ccb_data;
        !            43:        void                    *ccb_realdata;
        !            44:        bus_dmamap_t            ccb_dmamap;
        !            45:        bus_dma_segment_t       ccb_2bseg[TWE_MAXOFFSETS];
        !            46:        int                     ccb_2nseg;
        !            47: };
        !            48:
        !            49: typedef TAILQ_HEAD(twe_queue_head, twe_ccb)    twe_queue_head;
        !            50:
        !            51: struct twe_softc {
        !            52:        struct device   sc_dev;
        !            53:        void            *sc_ih;
        !            54:        struct scsi_link sc_link;
        !            55:        struct lock     sc_lock;
        !            56:        struct proc     *sc_thread;
        !            57:        int             sc_thread_on;
        !            58:
        !            59:        bus_space_tag_t iot;
        !            60:        bus_space_handle_t ioh;
        !            61:        bus_dma_tag_t   dmat;
        !            62:
        !            63:        void *sc_cmds;
        !            64:        bus_dmamap_t    sc_cmdmap;
        !            65:        bus_dma_segment_t sc_cmdseg[1];
        !            66:        struct twe_ccb  sc_ccbs[TWE_MAXCMDS];
        !            67:        twe_queue_head  sc_free_ccb;
        !            68:        twe_queue_head  sc_ccbq;
        !            69:        twe_queue_head  sc_ccb2q;
        !            70:        twe_queue_head  sc_done_ccb;
        !            71:
        !            72:        struct timeout  sc_enqueue_tmo;
        !            73:
        !            74:        struct {
        !            75:                int     hd_present;
        !            76:                int     hd_devtype;
        !            77:                int     hd_lock;
        !            78:                int     hd_size;
        !            79:        } sc_hdr[TWE_MAX_UNITS];
        !            80: };
        !            81:
        !            82: /* XXX These have to become spinlocks in case of SMP */
        !            83: #define TWE_LOCK(sc) splbio()
        !            84: #define TWE_UNLOCK(sc, lock) splx(lock)
        !            85: typedef int twe_lock_t;
        !            86:
        !            87: void   tweminphys(struct buf *bp);
        !            88: int    twe_attach(struct twe_softc *);
        !            89: int    twe_intr(void *);