sys/arch/vax/uba/uba_cmi.c

   1 /*      $NetBSD: uba_cmi.c,v 1.13 2005/12/11 12:19:36 christos Exp $       */
   2 /*
   3  * Copyright (c) 1982, 1986 The Regents of the University of California.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. Neither the name of the University nor the names of its contributors
  15  *    may be used to endorse or promote products derived from this software
  16  *    without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  *
  30  *      @(#)uba.c       7.10 (Berkeley) 12/16/90
  31  *      @(#)autoconf.c  7.20 (Berkeley) 5/9/91
  32  */
  33
  34 /*
  35  * Copyright (c) 1996 Jonathan Stone.
  36  * Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  * 3. All advertising materials mentioning features or use of this software
  47  *    must display the following acknowledgement:
  48  *      This product includes software developed by the University of
  49  *      California, Berkeley and its contributors.
  50  * 4. Neither the name of the University nor the names of its contributors
  51  *    may be used to endorse or promote products derived from this software
  52  *    without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  55  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  56  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  57  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  58  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  59  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  60  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  62  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  63  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  64  * SUCH DAMAGE.
  65  *
  66  *      @(#)uba.c       7.10 (Berkeley) 12/16/90
  67  *      @(#)autoconf.c  7.20 (Berkeley) 5/9/91
  68  */
  69
  70 #include <sys/cdefs.h>
  71 __KERNEL_RCSID(0, "$NetBSD: uba_cmi.c,v 1.13 2005/12/11 12:19:36 christos Exp $");
  72
  73 #include <sys/param.h>
  74 #include <sys/device.h>
  75 #include <sys/systm.h>
  76
  77 #define _VAX_BUS_DMA_PRIVATE
  78 #include <machine/bus.h>
  79 #include <machine/mtpr.h>
  80 #include <machine/nexus.h>
  81 #include <machine/cpu.h>
  82 #include <machine/sgmap.h>
  83
  84 #include <dev/qbus/ubavar.h>
  85
  86 #include <vax/uba/uba_common.h>
  87
  88 #include "locators.h"
  89
  90 /* Some CMI-specific defines */
  91 #define UBASIZE         ((UBAPAGES + UBAIOPAGES) * VAX_NBPG)
  92 #define UMEM750(i)      (0xfc0000 - (i) * UBASIZE)
  93 #define UIOPAGE(x)      (UMEM750(x) + (UBAPAGES * VAX_NBPG))
  94
  95 /*
  96  * The DW780 and DW750 are quite similar to their function from
  97  * a programmers point of view. Differencies are number of BDP's
  98  * and bus status/command registers, the latter are (partly) IPR's
  99  * on 750.
 100  */
 101 static  int     dw750_match(device_t, cfdata_t, void *);
 102 static  void    dw750_attach(device_t, device_t, void *);
 103 static  void    dw750_init(struct uba_softc *);
 104 #ifdef notyet
 105 static  void    dw750_purge(struct uba_softc *, int);
 106 #endif
 107
 108 CFATTACH_DECL_NEW(uba_cmi, sizeof(struct uba_vsoftc),
 109     dw750_match, dw750_attach, NULL, NULL);
 110
 111 int
 112 dw750_match(device_t parent, cfdata_t cf, void *aux)
 113 {
 114         struct sbi_attach_args * const sa = aux;
 115
 116         if (cf->cf_loc[CMICF_TR] != sa->sa_nexnum &&
 117             cf->cf_loc[CMICF_TR] != CMICF_TR_DEFAULT)
 118                 return 0;
 119         /*
 120          * The uba type is actually only telling where the uba
 121          * space is in nexus space.
 122          */
 123         if ((sa->sa_type & ~3) != NEX_UBA0)
 124                 return 0;
 125
 126         return 1;
 127 }
 128
 129 void
 130 dw750_attach(device_t parent, device_t self, void *aux)
 131 {
 132         struct uba_vsoftc * const sc = device_private(self);
 133         struct sbi_attach_args * const sa = aux;
 134
 135         aprint_normal(": DW750\n");
 136
 137         sc->uv_sc.uh_dev = self;
 138
 139         /*
 140          * Fill in bus specific data.
 141          */
 142         sc->uv_sc.uh_ubainit = dw750_init;
 143 #ifdef notyet
 144         sc->uv_sc.uh_ubapurge = dw750_purge;
 145 #endif
 146         sc->uv_sc.uh_iot = sa->sa_iot;
 147         sc->uv_sc.uh_dmat = &sc->uv_dmat;
 148         sc->uv_sc.uh_type = UBA_UBA;
 149         sc->uv_sc.uh_nr = sa->sa_type == NEX_UBA1;
 150
 151         /*
 152          * Fill in variables used by the sgmap system.
 153          */
 154         sc->uv_size = UBAPAGES * VAX_NBPG;
 155         sc->uv_uba = (void *)sa->sa_ioh; /* Map registers is in adaptor */
 156
 157         uba_dma_init(sc);
 158         uba_attach(&sc->uv_sc, UIOPAGE(sa->sa_type == NEX_UBA1));
 159 }
 160
 161 void
 162 dw750_init(struct uba_softc *sc)
 163 {
 164         mtpr(0, PR_IUR);
 165         DELAY(500000);
 166 }
 167
 168 #ifdef notyet
 169 void
 170 dw750_purge(struct uba_softc sc, int bdp)
 171 {
 172         sc->uh_uba->uba_dpr[bdp] |= UBADPR_PURGE | UBADPR_NXM | UBADPR_UCE;
 173 }
 174 #endif