sys/arch/alpha/pci/a12c.c

   1 /* $NetBSD: a12c.c,v 1.20 2009/03/14 15:35:59 dsl Exp $ */
   2
   3 /* [Notice revision 2.2]
   4  * Copyright (c) 1997, 1998 Avalon Computer Systems, Inc.
   5  * All rights reserved.
   6  *
   7  * Author: Ross Harvey
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright and
  13  *    author notice, this list of conditions, and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of Avalon Computer Systems, Inc. nor the names of
  18  *    its contributors may be used to endorse or promote products derived
  19  *    from this software without specific prior written permission.
  20  * 4. This copyright will be assigned to The NetBSD Foundation on
  21  *    1/1/2000 unless these terms (including possibly the assignment
  22  *    date) are updated in writing by Avalon prior to the latest specified
  23  *    assignment date.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY AVALON COMPUTER SYSTEMS, INC. AND CONTRIBUTORS
  26  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL AVALON OR THE CONTRIBUTORS
  29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 #include "opt_avalon_a12.h"             /* Config options headers */
  39 #include <sys/cdefs.h>                  /* RCS ID & Copyright macro defns */
  40
  41 __KERNEL_RCSID(0, "$NetBSD: a12c.c,v 1.20 2009/03/14 15:35:59 dsl Exp $");
  42
  43 #include <sys/param.h>
  44 #include <sys/systm.h>
  45 #include <sys/kernel.h>
  46 #include <sys/malloc.h>
  47 #include <sys/device.h>
  48
  49 #include <uvm/uvm_extern.h>
  50
  51 #include <machine/autoconf.h>
  52 #include <machine/rpb.h>
  53
  54 #include <dev/isa/isareg.h>
  55 #include <dev/isa/isavar.h>
  56 #include <dev/pci/pcireg.h>
  57 #include <dev/pci/pcivar.h>
  58
  59 #include <alpha/alpha/clockvar.h>
  60
  61 #include <alpha/pci/a12creg.h>
  62 #include <alpha/pci/a12cvar.h>
  63 #include <alpha/pci/pci_a12.h>
  64
  65 #define A12C()  /* Generate ctags(1) key */
  66
  67 int     a12cmatch(struct device *, struct cfdata *, void *);
  68 void    a12cattach(struct device *, struct device *, void *);
  69
  70 CFATTACH_DECL(a12c, sizeof(struct a12c_softc),
  71     a12cmatch, a12cattach, NULL, NULL);
  72
  73 extern struct cfdriver a12c_cd;
  74
  75 static const struct clocktime zeroct;
  76
  77 static void noclock_init(struct device *);
  78 static void noclock_get(struct device *, time_t, struct clocktime *);
  79 static void noclock_set(struct device *, struct clocktime *);
  80
  81 static const struct clockfns noclock_fns = {
  82         noclock_init, noclock_get, noclock_set
  83 };
  84
  85 /* There can be only one. */
  86
  87 int a12cfound;
  88 struct a12c_config a12c_configuration;
  89
  90 int
  91 a12cmatch(struct device *parent, struct cfdata *match, void *aux)
  92 {
  93         struct mainbus_attach_args *ma = aux;
  94
  95         return  cputype == ST_AVALON_A12
  96             &&  strcmp(ma->ma_name, a12c_cd.cd_name) == 0
  97             && !a12cfound;
  98 }
  99
 100 void
 101 a12c_init(struct a12c_config *ccp, int mallocsafe)
 102 {
 103         if (!ccp->ac_initted) {
 104                 /* someday these may allocate memory, do once only */
 105
 106                 ccp->ac_iot  = 0;
 107                 ccp->ac_memt = a12c_bus_mem_init(ccp);
 108         }
 109         ccp->ac_mallocsafe = mallocsafe;
 110
 111         a12c_pci_init(&ccp->ac_pc, ccp);
 112
 113         a12c_dma_init(ccp);
 114
 115         ccp->ac_initted = 1;
 116 }
 117
 118 void
 119 a12cattach(struct device *parent, struct device *self, void *aux)
 120 {
 121         struct a12c_softc *sc = (struct a12c_softc *)self;
 122         struct a12c_config *ccp;
 123         struct pcibus_attach_args pba;
 124
 125         /* note that we've attached the chipset; can't have 2 A12Cs. */
 126         a12cfound = 1;
 127
 128         /*
 129          * set up the chipset's info; done once at console init time
 130          * (maybe), but we must do it here as well to take care of things
 131          * that need to use memory allocation.
 132          */
 133         ccp = sc->sc_ccp = &a12c_configuration;
 134         a12c_init(ccp, 1);
 135
 136         /* XXX print chipset information */
 137         printf(": driver %s over logic %x\n", "$Revision: 1.21 $",
 138                 A12_ALL_EXTRACT(REGVAL(A12_VERS)));
 139
 140         pci_a12_pickintr(ccp);
 141         clockattach(noclock_init, NULL);        /* XXX? */
 142
 143         memset(&pba, 0, sizeof(pba));
 144         pba.pba_iot = 0;
 145         pba.pba_memt = ccp->ac_memt;
 146         pba.pba_dmat = &ccp->ac_dmat_direct;
 147         pba.pba_dmat64 = NULL;
 148         pba.pba_pc = &ccp->ac_pc;
 149         pba.pba_bus = 0;
 150         pba.pba_bridgetag = NULL;
 151         pba.pba_flags = PCI_FLAGS_MEM_ENABLED |
 152             PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY;
 153
 154         config_found_ia(self, "pcibus", &pba, pcibusprint);
 155
 156         pba.pba_bus     = 1;
 157         config_found_ia(self, "a12c_xb", &pba, NULL);
 158
 159         pba.pba_bus     = 2;
 160         config_found_ia(self, "a12c_a12dc", &pba, NULL);
 161 }
 162
 163 static void noclock_init(void (*)(void *), void *)
 164 {
 165
 166         /* nothing */
 167 }