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

1.1       nbrk        1: /*     $OpenBSD: cacvar.h,v 1.3 2003/03/06 22:31:21 mickey Exp $       */
                      2: /*     $NetBSD: cacvar.h,v 1.7 2000/10/19 14:28:47 ad Exp $    */
                      3:
                      4: /*-
                      5:  * Copyright (c) 2000 The NetBSD Foundation, Inc.
                      6:  * All rights reserved.
                      7:  *
                      8:  * This code is derived from software contributed to The NetBSD Foundation
                      9:  * by Andrew Doran.
                     10:  *
                     11:  * Redistribution and use in source and binary forms, with or without
                     12:  * modification, are permitted provided that the following conditions
                     13:  * are met:
                     14:  * 1. Redistributions of source code must retain the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer.
                     16:  * 2. Redistributions in binary form must reproduce the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer in the
                     18:  *    documentation and/or other materials provided with the distribution.
                     19:  * 3. All advertising materials mentioning features or use of this software
                     20:  *    must display the following acknowledgement:
                     21:  *        This product includes software developed by the NetBSD
                     22:  *        Foundation, Inc. and its contributors.
                     23:  * 4. Neither the name of The NetBSD Foundation nor the names of its
                     24:  *    contributors may be used to endorse or promote products derived
                     25:  *    from this software without specific prior written permission.
                     26:  *
                     27:  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
                     28:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     29:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     30:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
                     31:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     32:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     33:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     34:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     35:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     36:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     37:  * POSSIBILITY OF SUCH DAMAGE.
                     38:  */
                     39:
                     40: #ifndef _IC_CACVAR_H_
                     41: #define        _IC_CACVAR_H_
                     42:
                     43: #define        CAC_MAX_CCBS    128
                     44: #define        CAC_MAX_XFER    (0xffff * 512)
                     45: #define        CAC_SG_SIZE     32
                     46: #define        CAC_SECTOR_SIZE 512
                     47:
                     48: #define        cac_inb(sc, port) \
                     49:        bus_space_read_1((sc)->sc_iot, (sc)->sc_ioh, port)
                     50: #define        cac_inw(sc, port) \
                     51:        bus_space_read_2((sc)->sc_iot, (sc)->sc_ioh, port)
                     52: #define        cac_inl(sc, port) \
                     53:        bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, port)
                     54: #define        cac_outb(sc, port, val) \
                     55:        bus_space_write_1((sc)->sc_iot, (sc)->sc_ioh, port, val)
                     56: #define        cac_outw(sc, port, val) \
                     57:        bus_space_write_2((sc)->sc_iot, (sc)->sc_ioh, port, val)
                     58: #define        cac_outl(sc, port, val) \
                     59:        bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, port, val)
                     60:
                     61: /*
                     62:  * Stupid macros to deal with alignment/endianness issues.
                     63:  */
                     64:
                     65: #define        CAC_GET1(x)                                                     \
                     66:        (((u_char *)&(x))[0])
                     67: #define        CAC_GET2(x)                                                     \
                     68:        (((u_char *)&(x))[0] | (((u_char *)&(x))[1] << 8))
                     69: #define        CAC_GET4(x)                                                     \
                     70:        ((((u_char *)&(x))[0] | (((u_char *)&(x))[1] << 8)) |           \
                     71:        (((u_char *)&(x))[0] << 16 | (((u_char *)&(x))[1] << 24)))
                     72:
                     73: struct cac_ccb {
                     74:        /* Data the controller will touch - 276 bytes */
                     75:        struct cac_hdr  ccb_hdr;
                     76:        struct cac_req  ccb_req;
                     77:        struct cac_sgb  ccb_seg[CAC_SG_SIZE];
                     78:
                     79:        /* Data the controller won't touch */
                     80:        int             ccb_flags;
                     81:        int             ccb_datasize;
                     82:        paddr_t         ccb_paddr;
                     83:        bus_dmamap_t    ccb_dmamap_xfer;
                     84:        SIMPLEQ_ENTRY(cac_ccb) ccb_chain;
                     85:        struct scsi_xfer *ccb_xs;
                     86: };
                     87:
                     88: #define        CAC_CCB_DATA_IN         0x0001  /* Map describes inbound xfer */
                     89: #define        CAC_CCB_DATA_OUT        0x0002  /* Map describes outbound xfer */
                     90: #define        CAC_CCB_ACTIVE          0x0004  /* Command submitted to controller */
                     91:
                     92: struct cac_softc;
                     93:
                     94: struct cac_linkage {
                     95:        struct  cac_ccb *(*cl_completed)(struct cac_softc *);
                     96:        int     (*cl_fifo_full)(struct cac_softc *);
                     97:        void    (*cl_intr_enable)(struct cac_softc *, int);
                     98:        int     (*cl_intr_pending)(struct cac_softc *);
                     99:        void    (*cl_submit)(struct cac_softc *, struct cac_ccb *);
                    100: };
                    101:
                    102: struct cac_softc {
                    103:        struct device           sc_dv;
                    104:        bus_space_tag_t         sc_iot;
                    105:        bus_space_handle_t      sc_ioh;
                    106:        bus_dma_tag_t           sc_dmat;
                    107:        bus_dmamap_t            sc_dmamap;
                    108:        int                     sc_nunits;
                    109:        void                    *sc_ih;
                    110:        struct scsi_link        sc_link;
                    111:        const struct cac_linkage        *sc_cl;
                    112:        caddr_t                 sc_ccbs;
                    113:        paddr_t                 sc_ccbs_paddr;
                    114:        SIMPLEQ_HEAD(, cac_ccb) sc_ccb_free;
                    115:        SIMPLEQ_HEAD(, cac_ccb) sc_ccb_queue;
                    116:        struct cac_drive_info   *sc_dinfos;
                    117: };
                    118:
                    119: int    cac_init(struct cac_softc *, int);
                    120: int    cac_intr(void *);
                    121:
                    122: extern const struct    cac_linkage cac_l0;
                    123:
                    124: #endif /* !_IC_CACVAR_H_ */