sys/dev/isa/if_tribm_isa.c

   1 /*      $NetBSD: if_tribm_isa.c,v 1.13 2009/05/12 08:44:19 cegger Exp $ */
   2
   3 /* XXXJRT changes isa_attach_args too early */
   4
   5 /*
   6  * Copyright (c) 1999 The NetBSD Foundation, Inc.
   7  * All rights reserved.
   8  *
   9  * This code is derived from software contributed to The NetBSD Foundation
  10  * by Onno van der Linden.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/cdefs.h>
  35 __KERNEL_RCSID(0, "$NetBSD: if_tribm_isa.c,v 1.13 2009/05/12 08:44:19 cegger Exp $");
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/socket.h>
  40 #include <sys/device.h>
  41
  42 #include <net/if.h>
  43 #include <net/if_ether.h>
  44 #include <net/if_media.h>
  45
  46 #include <sys/bus.h>
  47
  48 #include <dev/isa/isavar.h>
  49
  50 #include <dev/ic/tropicreg.h>
  51 #include <dev/ic/tropicvar.h>
  52
  53 int     tribm_isa_probe(device_t, cfdata_t, void *);
  54 int     tr_isa_map_io(struct isa_attach_args *, bus_space_handle_t *,
  55             bus_space_handle_t *);
  56 void    tr_isa_unmap_io(struct isa_attach_args *, bus_space_handle_t,
  57             bus_space_handle_t);
  58
  59 int
  60 tribm_isa_probe(device_t parent, cfdata_t match, void *aux)
  61 {
  62         struct isa_attach_args *ia = aux;
  63         static int irq_f[4] = { 9, 3, 6, 7 };
  64         static int irq_e[4] = { 9, 3, 10, 11 };
  65         bus_space_tag_t piot = ia->ia_iot;
  66         bus_space_tag_t memt = ia->ia_memt;
  67         bus_space_handle_t pioh, mmioh;
  68         int i, irq;
  69         u_int8_t s;
  70
  71         if (ia->ia_nio < 1)
  72                 return (0);
  73         if (ia->ia_niomem < 1)
  74                 return (0);
  75         if (ia->ia_nirq < 1)
  76                 return (0);
  77
  78         if (ISA_DIRECT_CONFIG(ia))
  79                 return (0);
  80
  81 #ifdef notyet
  82 /* XXX Try both 0xa20 and 0xa24 and store that info like 3com */
  83         if (ia->ia_iobase == IOBASEUNK)
  84                 ia->ia_iobase = 0xa20;
  85 #else
  86         if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
  87                 return (0);
  88 #endif
  89
  90         /*
  91          * XXXJRT Should not modify attach_args unless we know we match!
  92          */
  93
  94         ia->ia_io[0].ir_size = 4;
  95         ia->ia_aux = NULL;
  96
  97         if (tr_isa_map_io(ia, &pioh, &mmioh))
  98                 return 0;
  99
 100 /*
 101  * F = Token-Ring Network PC Adapter
 102  *     Token-Ring Network PC Adapter II
 103  *     Token-Ring Network Adapter/A
 104  * E = Token-Ring Network 16/4 Adapter/A (long card)
 105  *     Token-Ring Network 16/4 Adapter
 106  * D = Token-Ring Network 16/4 Adapter/A (short card)
 107  *     16/4 ISA-16 Adapter
 108  * C = Auto 16/4 Token-Ring ISA Adapter
 109  *     Auto 16/4 Token-Ring MC Adapter
 110  */
 111 /*
 112  * XXX Both 0xD and 0xC types should be able to use 16-bit read and writes
 113  */
 114         switch (bus_space_read_1(memt, mmioh, TR_TYP_OFFSET)) {
 115         case 0xF:
 116         case 0xE:
 117         case 0xD:
 118                 if (ia->ia_iomem[0].ir_addr == ISA_UNKNOWN_IOMEM)
 119 #ifdef notyet
 120                         ia->ia_maddr = TR_SRAM_DEFAULT;
 121 #else
 122                         return 0;
 123 #endif
 124                 break;
 125         case 0xC:
 126                 i = bus_space_read_1(memt, mmioh, TR_ACA_OFFSET) << 12;
 127                 if (ia->ia_iomem[0].ir_addr == ISA_UNKNOWN_IOMEM)
 128                         ia->ia_iomem[0].ir_addr = i;
 129                 else if (ia->ia_iomem[0].ir_addr != i) {
 130                         printf(
 131 "tribm_isa_probe: sram mismatch; kernel configured %x != board configured %x\n",
 132                                 ia->ia_iomem[0].ir_addr, i);
 133                         tr_isa_unmap_io(ia, pioh, mmioh);
 134                         return 0;
 135                 }
 136                 break;
 137         default:
 138                 printf("tribm_isa_probe: unknown type code %x\n",
 139                     bus_space_read_1(memt, mmioh, TR_TYP_OFFSET));
 140                 tr_isa_unmap_io(ia, pioh, mmioh);
 141                 return 0;
 142         }
 143
 144         s = bus_space_read_1(piot, pioh, TR_SWITCH);
 145
 146         switch (bus_space_read_1(memt, mmioh, TR_IRQ_OFFSET)) {
 147         case 0xF:
 148                 irq = irq_f[s & 3];
 149                 break;
 150         case 0xE:
 151                 irq = irq_e[s & 3];
 152                 break;
 153         default:
 154                 printf("tribm_isa_probe: Unknown IRQ code %x\n",
 155                     bus_space_read_1(memt, mmioh, TR_IRQ_OFFSET));
 156                 tr_isa_unmap_io(ia, pioh, mmioh);
 157                 return 0;
 158         }
 159
 160         if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
 161                 ia->ia_irq[0].ir_irq = irq;
 162         else if (ia->ia_irq[0].ir_irq != irq) {
 163                 printf(
 164 "tribm_isa_probe: irq mismatch; kernel configured %d != board configured %d\n",
 165                         ia->ia_irq[0].ir_irq, irq);
 166                 tr_isa_unmap_io(ia, pioh, mmioh);
 167                 return 0;
 168         }
 169 /*
 170  * XXX 0x0c == MSIZEMASK (MSIZEBITS)
 171  */
 172         ia->ia_iomem[0].ir_size = 8192 <<
 173             ((bus_space_read_1(memt, mmioh, TR_ACA_OFFSET + 1) & 0x0c) >> 2);
 174         tr_isa_unmap_io(ia, pioh, mmioh);
 175         /* Check alignment of membase. */
 176         if ((ia->ia_iomem[0].ir_addr & (ia->ia_iomem[0].ir_size-1)) != 0) {
 177                 printf("tribm_isa_probe: SRAM unaligned 0x%04x/%d\n",
 178                     ia->ia_iomem[0].ir_addr, ia->ia_iomem[0].ir_size);
 179                 return 0;
 180         }
 181
 182         ia->ia_nio = 1;
 183         ia->ia_niomem = 1;
 184         ia->ia_nirq = 1;
 185
 186         ia->ia_ndrq = 0;
 187
 188         return 1;
 189 }