sys/dev/mca/mca.c

   1 /*      $NetBSD: mca.c,v 1.29 2009/05/12 13:15:24 cegger Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
   5  * Copyright (c) 1996-1999 Scott D. Telford.
   6  * All rights reserved.
   7  *
   8  * This code is derived from software contributed to The NetBSD Foundation
   9  * by Scott Telford <s.telford@ed.ac.uk>.
  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  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * MCA Bus device
  35  */
  36
  37 #include <sys/cdefs.h>
  38 __KERNEL_RCSID(0, "$NetBSD: mca.c,v 1.29 2009/05/12 13:15:24 cegger Exp $");
  39
  40 #include <sys/param.h>
  41 #include <sys/systm.h>
  42 #include <sys/device.h>
  43
  44 #include <sys/bus.h>
  45 #include <machine/mca_machdep.h>
  46
  47 #include <dev/mca/mcareg.h>
  48 #include <dev/mca/mcavar.h>
  49 #include <dev/mca/mcadevs.h>
  50
  51 #include "locators.h"
  52
  53 int     mca_match(device_t, cfdata_t, void *);
  54 void    mca_attach(device_t, device_t, void *);
  55
  56 CFATTACH_DECL(mca, sizeof(struct device),
  57     mca_match, mca_attach, NULL, NULL);
  58
  59 int     mca_print(void *, const char *);
  60
  61 int
  62 mca_match(device_t parent, cfdata_t cf, void *aux)
  63 {
  64         struct mcabus_attach_args *mba = aux;
  65
  66         /* sanity (only mca0 supported currently) */
  67         if (mba->mba_bus < 0 || mba->mba_bus > 0)
  68                 return (0);
  69
  70         /* XXX check other indicators? */
  71
  72         return (1);
  73 }
  74
  75 int
  76 mca_print(void *aux, const char *pnp)
  77 {
  78         register struct mca_attach_args *ma = aux;
  79         char devinfo[256];
  80
  81         if (pnp) {
  82                 mca_devinfo(ma->ma_id, devinfo, sizeof(devinfo));
  83                 aprint_normal("%s slot %d: %s", pnp, ma->ma_slot + 1, devinfo);
  84         }
  85
  86         /*
  87          * Print "configured" for Memory Extension boards - there is no
  88          * meaningfull driver for them, they "just work".
  89          */
  90         switch(ma->ma_id) {
  91         case MCA_PRODUCT_HRAM: case MCA_PRODUCT_IQRAM: case MCA_PRODUCT_MICRAM:
  92         case MCA_PRODUCT_ASTRAM: case MCA_PRODUCT_KINGRAM:
  93         case MCA_PRODUCT_KINGRAM8: case MCA_PRODUCT_KINGRAM16:
  94         case MCA_PRODUCT_KINGRAM609: case MCA_PRODUCT_HYPRAM:
  95         case MCA_PRODUCT_QRAM1: case MCA_PRODUCT_QRAM2: case MCA_PRODUCT_EVERAM:
  96         case MCA_PRODUCT_BOCARAM: case MCA_PRODUCT_IBMRAM1:
  97         case MCA_PRODUCT_IBMRAM2: case MCA_PRODUCT_IBMRAM3:
  98         case MCA_PRODUCT_IBMRAM4: case MCA_PRODUCT_IBMRAM5:
  99         case MCA_PRODUCT_IBMRAM6: case MCA_PRODUCT_IBMRAM7:
 100                 aprint_normal(": memory configured\n");
 101                 return (QUIET);
 102         default:
 103                 return (UNCONF);
 104         }
 105 }
 106
 107 void
 108 mca_attach(device_t parent, device_t self, void *aux)
 109 {
 110         struct mcabus_attach_args *mba = aux;
 111         bus_space_tag_t iot, memt;
 112         bus_dma_tag_t dmat;
 113         mca_chipset_tag_t mc;
 114         int slot;
 115
 116         mca_attach_hook(parent, self, mba);
 117         printf("\n");
 118
 119         iot = mba->mba_iot;
 120         memt = mba->mba_memt;
 121         mc = mba->mba_mc;
 122         dmat = mba->mba_dmat;
 123
 124         /*
 125          * Search for and attach subdevices.
 126          *
 127          * NB: In the adapter setup register, slots are numbered from 0,
 128          * but officially they are numbered from 1.
 129          * We use the former convention internally and the latter for text
 130          * messages and in config files.
 131          */
 132
 133         for (slot = 0; slot < MCA_MAX_SLOTS; slot++) {
 134                 struct mca_attach_args ma;
 135                 int reg;
 136                 int locs[MCACF_NLOCS];
 137
 138                 ma.ma_iot = iot;
 139                 ma.ma_memt = memt;
 140                 ma.ma_dmat = dmat;
 141                 ma.ma_mc = mc;
 142                 ma.ma_slot = slot;
 143
 144                 for(reg = 0; reg < 8; reg++)
 145                         ma.ma_pos[reg]=mca_conf_read(mc, slot, reg);
 146
 147                 ma.ma_id = ma.ma_pos[0] + (ma.ma_pos[1] << 8);
 148                 if (ma.ma_id == 0xffff) /* no adapter here */
 149                         continue;
 150
 151                 locs[MCACF_SLOT] = slot;
 152
 153                 if (ma.ma_pos[2] & MCA_POS2_ENABLE
 154                     || mca_match_disabled(ma.ma_id))
 155                         config_found_sm_loc(self, "mca", locs, &ma,
 156                                             mca_print, config_stdsubmatch);
 157                 else {
 158                         mca_print(&ma, device_xname(self));
 159                         printf(" disabled\n");
 160                 }
 161         }
 162 }