sys/dev/netif/ar/if_ar_isa.c

   1 /*-
   2  * Copyright (c) 1995 - 2001 John Hay.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  * 3. Neither the name of the author nor the names of any co-contributors
  13  *    may be used to endorse or promote products derived from this software
  14  *    without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY John Hay ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL John Hay BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  * $FreeBSD: src/sys/dev/ar/if_ar_isa.c,v 1.54 2005/01/06 01:42:28 imp Exp $
  29  * $DragonFly: src/sys/dev/netif/ar/if_ar_isa.c,v 1.6 2006/12/22 23:26:18 swildner Exp $
  30  */
  31
  32 /*
  33  * Programming assumptions and other issues.
  34  *
  35  * The descriptors of a DMA channel will fit in a 16K memory window.
  36  *
  37  * The buffers of a transmit DMA channel will fit in a 16K memory window.
  38  *
  39  * Only the ISA bus cards with X.21 and V.35 is tested.
  40  *
  41  * When interface is going up, handshaking is set and it is only cleared
  42  * when the interface is down'ed.
  43  *
  44  * There should be a way to set/reset Raw HDLC/PPP, Loopback, DCE/DTE,
  45  * internal/external clock, etc.....
  46  */
  47
  48 #include <sys/param.h>
  49 #include <sys/systm.h>
  50 #include <sys/kernel.h>
  51 #include <sys/module.h>
  52 #include <sys/bus.h>
  53 #include <sys/rman.h>
  54
  55 #include <bus/isa/isavar.h>
  56 #include "isa_if.h"
  57
  58 #include <dev/netif/ic_layer/hd64570.h>
  59 #include <dev/netif/ar/if_arregs.h>
  60
  61 #ifdef TRACE
  62 #define TRC(x)               x
  63 #else
  64 #define TRC(x)
  65 #endif
  66
  67 #define TRCL(x)              x
  68
  69 static int ar_isa_probe (device_t);
  70 static int ar_isa_attach (device_t);
  71
  72 static struct isa_pnp_id ar_ids[] = {
  73         {0,             NULL}
  74 };
  75
  76 static device_method_t ar_methods[] = {
  77         DEVMETHOD(device_probe,         ar_isa_probe),
  78         DEVMETHOD(device_attach,        ar_isa_attach),
  79         DEVMETHOD(device_detach,        ar_detach),
  80         { 0, 0 }
  81 };
  82
  83 static driver_t ar_isa_driver = {
  84         "ar",
  85         ar_methods,
  86         sizeof (struct ar_hardc)
  87 };
  88
  89 DRIVER_MODULE(if_ar, isa, ar_isa_driver, ar_devclass, 0, 0);
  90
  91 /*
  92  * Probe to see if it is there.
  93  * Get its information and fill it in.
  94  */
  95 static int
  96 ar_isa_probe(device_t device)
  97 {
  98         int error;
  99         u_long membase, memsize;
 100         struct ar_hardc *hc;
 101
 102         error = ISA_PNP_PROBE(device_get_parent(device), device, ar_ids);
 103         if(error == ENXIO || error == 0)
 104                 return (error);
 105
 106         hc = (struct ar_hardc *)device_get_softc(device);
 107
 108         if((error = ar_allocate_ioport(device, 0, ARC_IO_SIZ))) {
 109                 return (ENXIO);
 110         }
 111
 112         /*
 113          * Now see if the card is realy there.
 114          *
 115          * XXX For now I just check the undocumented ports
 116          * for "570". We will probably have to do more checking.
 117          */
 118         if((ar_inb(hc, AR_ID_5) != '5') ||
 119            (ar_inb(hc, AR_ID_7) != '7') ||
 120            (ar_inb(hc, AR_ID_0) != '0')) {
 121                 ar_deallocate_resources(device);
 122                 return (ENXIO);
 123         }
 124         membase = bus_get_resource_start(device, SYS_RES_MEMORY, 0);
 125         memsize = ar_inb(hc, AR_REV);
 126         memsize = 1 << ((memsize & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
 127         memsize *= ARC_WIN_SIZ;
 128         error = bus_set_resource(device, SYS_RES_MEMORY, 0, membase, memsize);
 129         ar_deallocate_resources(device);
 130
 131         return (error);
 132 }
 133
 134 /*
 135  * Malloc memory for the softc structures.
 136  * Reset the card to put it in a known state.
 137  * Register the ports on the adapter.
 138  * Fill in the info for each port.
 139  * Attach each port to sppp and bpf.
 140  */
 141 static int
 142 ar_isa_attach(device_t device)
 143 {
 144         u_int tmp;
 145         u_long irq, junk;
 146         struct ar_hardc *hc;
 147
 148         hc = (struct ar_hardc *)device_get_softc(device);
 149         if(ar_allocate_ioport(device, 0, ARC_IO_SIZ))
 150                 return (ENXIO);
 151
 152         tmp = ar_inb(hc, AR_BMI);
 153         hc->bustype = tmp & AR_BUS_MSK;
 154         hc->memsize = (tmp & AR_MEM_MSK) >> AR_MEM_SHFT;
 155         hc->memsize = 1 << hc->memsize;
 156         hc->memsize <<= 16;
 157         hc->interface[0] = (tmp & AR_IFACE_MSK);
 158         hc->interface[1] = hc->interface[0];
 159         hc->interface[2] = hc->interface[0];
 160         hc->interface[3] = hc->interface[0];
 161         tmp = ar_inb(hc, AR_REV);
 162         hc->revision = tmp & AR_REV_MSK;
 163         hc->winsize = 1 << ((tmp & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
 164         hc->winsize *= ARC_WIN_SIZ;
 165         hc->winmsk = hc->winsize - 1;
 166         hc->numports = ar_inb(hc, AR_PNUM);
 167         hc->handshake = ar_inb(hc, AR_HNDSH);
 168
 169         if(ar_allocate_memory(device, 0, hc->winsize))
 170                 return (ENXIO);
 171
 172         hc->mem_start = rman_get_virtual(hc->res_memory);
 173         hc->mem_end = hc->mem_start + hc->winsize;
 174         hc->cunit = device_get_unit(device);
 175
 176         switch(hc->interface[0]) {
 177         case AR_IFACE_EIA_232:
 178                 kprintf("ar%d: The EIA 232 interface is not supported.\n",
 179                         hc->cunit);
 180                 ar_deallocate_resources(device);
 181                 return (ENXIO);
 182         case AR_IFACE_V_35:
 183                 break;
 184         case AR_IFACE_EIA_530:
 185                 kprintf("ar%d: WARNING: The EIA 530 interface is untested.\n",
 186                         hc->cunit);
 187                 break;
 188         case AR_IFACE_X_21:
 189                 break;
 190         case AR_IFACE_COMBO:
 191                 kprintf("ar%d: WARNING: The COMBO interface is untested.\n",
 192                         hc->cunit);
 193                 break;
 194         }
 195
 196         /*
 197          * Do a little sanity check.
 198          */
 199         if((hc->numports > NPORT) || (hc->memsize > (512*1024))) {
 200                 ar_deallocate_resources(device);
 201                 return (ENXIO);
 202         }
 203
 204         if(ar_allocate_irq(device, 0, 1))
 205                 return (ENXIO);
 206
 207         if(bus_get_resource(device, SYS_RES_IRQ, 0, &irq, &junk)) {
 208                 ar_deallocate_resources(device);
 209                 return (ENXIO);
 210         }
 211         hc->isa_irq = irq;
 212
 213         if(ar_attach(device)) {
 214                 ar_deallocate_resources(device);
 215                 return (ENXIO);
 216         }
 217
 218         return (0);
 219 }
 220
 221 /*
 222  ********************************* END ************************************
 223  */