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Annotation of sys/dev/ic/twevar.h, Revision 1.1.1.1

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 *);