sys/arch/acorn32/podulebus/netslot.c

   1 /*      $NetBSD: netslot.c,v 1.7 2009/03/14 14:45:52 dsl Exp $  */
   2
   3 /*
   4  * Copyright (c) 1994-1996 Mark Brinicombe.
   5  * Copyright (c) 1994 Brini.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by Brini.
  19  * 4. The name of the company nor the name of the author may be used to
  20  *    endorse or promote products derived from this software without specific
  21  *    prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
  24  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <sys/param.h>
  37
  38 __KERNEL_RCSID(1, "$NetBSD: netslot.c,v 1.7 2009/03/14 14:45:52 dsl Exp $");
  39
  40 #include <sys/systm.h>
  41 #include <sys/kernel.h>
  42 #include <sys/conf.h>
  43 #include <sys/malloc.h>
  44 #include <sys/device.h>
  45 #include <uvm/uvm_extern.h>
  46 #include <machine/io.h>
  47 #include <arm/arm32/katelib.h>
  48 #include <machine/intr.h>
  49 #include <machine/bootconfig.h>
  50 #include <arm/iomd/iomdreg.h>
  51 #include <arm/iomd/iomdvar.h>
  52 #include <dev/podulebus/podulebus.h>
  53 #include <dev/podulebus/podules.h>
  54
  55 u_int netslotread(u_int, int);
  56
  57 u_int
  58 netslotread(u_int address, int offset)
  59 {
  60         static int netslotoffset = -1;
  61
  62         offset = offset >> 2;
  63         if (netslotoffset == -1 || offset < netslotoffset) {
  64                 WriteByte(address, 0);
  65                 netslotoffset = 0;
  66         }
  67         while (netslotoffset < offset) {
  68                 (void)ReadByte(address);
  69                 ++netslotoffset;
  70         }
  71         ++netslotoffset;
  72         return(ReadByte(address));
  73 }
  74
  75 void
  76 netslotscan(struct device *dev)
  77 {
  78         podule_t *podule;
  79         volatile u_char *address;
  80
  81         /* Only one netslot atm */
  82
  83         /* Reset the address counter */
  84
  85         WriteByte(NETSLOT_BASE, 0x00);
  86
  87         address = (u_char *)NETSLOT_BASE;
  88
  89         podule = &podules[MAX_PODULES];
  90
  91         podule->fast_base = NETSLOT_BASE;
  92         podule->medium_base = NETSLOT_BASE;
  93         podule->slow_base = NETSLOT_BASE;
  94         podule->sync_base = NETSLOT_BASE;
  95         podule->mod_base = NETSLOT_BASE;
  96         podule->easi_base = 0;
  97         podule->attached = 0;
  98         podule->slottype = SLOT_NONE;
  99         podule->podulenum = MAX_PODULES;
 100         podule->interrupt = IRQ_NETSLOT;
 101         podule->read_rom = netslotread;
 102         podule->dma_channel = -1;
 103         podule->dma_interrupt = -1;
 104         podule->description[0] = 0;
 105
 106         /* XXX - Really needs to be linked to a DMA manager */
 107         if (IOMD_ID == RPC600_IOMD_ID)
 108                 podule->dma_channel = 0;
 109
 110         /* Get information from the podule header */
 111
 112         podule->flags0 = *address;
 113         podule->flags1 = *address;
 114         podule->reserved = *address;
 115         podule->product = *address;
 116         podule->product += (*address << 8);
 117         podule->manufacturer = *address;
 118         podule->manufacturer += (*address << 8);
 119         podule->country = *address;
 120         if (podule->flags1 & PODULE_FLAGS_IS) {
 121                 podule->irq_mask = *address;
 122                 podule->irq_addr = *address;
 123                 podule->irq_addr += (*address << 8);
 124                 podule->irq_addr += (*address << 16);
 125                 podule->irq_addr += podule->slow_base;
 126                 if (podule->irq_mask == 0)
 127                         podule->irq_mask = 0x01;
 128                 podule->fiq_mask = *address;
 129                 podule->fiq_addr = *address;
 130                 podule->fiq_addr += (*address << 8);
 131                 podule->fiq_addr += (*address << 16);
 132                 podule->fiq_addr += podule->slow_base;
 133                 if (podule->fiq_mask == 0)
 134                         podule->fiq_mask = 0x04;
 135         } else {
 136                 podule->irq_addr = podule->slow_base;
 137                 podule->irq_mask = 0x01;
 138                 podule->fiq_addr = podule->slow_base;
 139                 podule->fiq_mask = 0x04;
 140         }
 141
 142         poduleexamine(podule, dev, SLOT_NET);
 143 }
 144
 145 void
 146 netslot_ea(u_int8_t *buffer)
 147 {
 148         /* Build station address from machine ID */
 149         buffer[0] = 0x00;
 150         buffer[1] = 0x00;
 151         buffer[2] = 0xa4;
 152         buffer[3] = bootconfig.machine_id[2] + 0x10;
 153         buffer[4] = bootconfig.machine_id[1];
 154         buffer[5] = bootconfig.machine_id[0];
 155 }