qemu/hw/net/lance.c
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   1/*
   2 * QEMU AMD PC-Net II (Am79C970A) emulation
   3 *
   4 * Copyright (c) 2004 Antony T Curtis
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a copy
   7 * of this software and associated documentation files (the "Software"), to deal
   8 * in the Software without restriction, including without limitation the rights
   9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 * copies of the Software, and to permit persons to whom the Software is
  11 * furnished to do so, subject to the following conditions:
  12 *
  13 * The above copyright notice and this permission notice shall be included in
  14 * all copies or substantial portions of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 * THE SOFTWARE.
  23 */
  24
  25/* This software was written to be compatible with the specification:
  26 * AMD Am79C970A PCnet-PCI II Ethernet Controller Data-Sheet
  27 * AMD Publication# 19436  Rev:E  Amendment/0  Issue Date: June 2000
  28 */
  29
  30/*
  31 * On Sparc32, this is the Lance (Am7990) part of chip STP2000 (Master I/O), also
  32 * produced as NCR89C100. See
  33 * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C100.txt
  34 * and
  35 * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR92C990.txt
  36 */
  37
  38#include "qemu/osdep.h"
  39#include "hw/sysbus.h"
  40#include "net/net.h"
  41#include "qemu/timer.h"
  42#include "qemu/sockets.h"
  43#include "hw/sparc/sun4m.h"
  44#include "pcnet.h"
  45#include "trace.h"
  46#include "sysemu/sysemu.h"
  47
  48#define TYPE_LANCE "lance"
  49#define SYSBUS_PCNET(obj) \
  50    OBJECT_CHECK(SysBusPCNetState, (obj), TYPE_LANCE)
  51
  52typedef struct {
  53    SysBusDevice parent_obj;
  54
  55    PCNetState state;
  56} SysBusPCNetState;
  57
  58static void parent_lance_reset(void *opaque, int irq, int level)
  59{
  60    SysBusPCNetState *d = opaque;
  61    if (level)
  62        pcnet_h_reset(&d->state);
  63}
  64
  65static void lance_mem_write(void *opaque, hwaddr addr,
  66                            uint64_t val, unsigned size)
  67{
  68    SysBusPCNetState *d = opaque;
  69
  70    trace_lance_mem_writew(addr, val & 0xffff);
  71    pcnet_ioport_writew(&d->state, addr, val & 0xffff);
  72}
  73
  74static uint64_t lance_mem_read(void *opaque, hwaddr addr,
  75                               unsigned size)
  76{
  77    SysBusPCNetState *d = opaque;
  78    uint32_t val;
  79
  80    val = pcnet_ioport_readw(&d->state, addr);
  81    trace_lance_mem_readw(addr, val & 0xffff);
  82    return val & 0xffff;
  83}
  84
  85static const MemoryRegionOps lance_mem_ops = {
  86    .read = lance_mem_read,
  87    .write = lance_mem_write,
  88    .endianness = DEVICE_NATIVE_ENDIAN,
  89    .valid = {
  90        .min_access_size = 2,
  91        .max_access_size = 2,
  92    },
  93};
  94
  95static NetClientInfo net_lance_info = {
  96    .type = NET_CLIENT_DRIVER_NIC,
  97    .size = sizeof(NICState),
  98    .receive = pcnet_receive,
  99    .link_status_changed = pcnet_set_link_status,
 100};
 101
 102static const VMStateDescription vmstate_lance = {
 103    .name = "pcnet",
 104    .version_id = 3,
 105    .minimum_version_id = 2,
 106    .fields = (VMStateField[]) {
 107        VMSTATE_STRUCT(state, SysBusPCNetState, 0, vmstate_pcnet, PCNetState),
 108        VMSTATE_END_OF_LIST()
 109    }
 110};
 111
 112static int lance_init(SysBusDevice *sbd)
 113{
 114    DeviceState *dev = DEVICE(sbd);
 115    SysBusPCNetState *d = SYSBUS_PCNET(dev);
 116    PCNetState *s = &d->state;
 117
 118    memory_region_init_io(&s->mmio, OBJECT(d), &lance_mem_ops, d,
 119                          "lance-mmio", 4);
 120
 121    qdev_init_gpio_in(dev, parent_lance_reset, 1);
 122
 123    sysbus_init_mmio(sbd, &s->mmio);
 124
 125    sysbus_init_irq(sbd, &s->irq);
 126
 127    s->phys_mem_read = ledma_memory_read;
 128    s->phys_mem_write = ledma_memory_write;
 129    pcnet_common_init(dev, s, &net_lance_info);
 130    return 0;
 131}
 132
 133static void lance_reset(DeviceState *dev)
 134{
 135    SysBusPCNetState *d = SYSBUS_PCNET(dev);
 136
 137    pcnet_h_reset(&d->state);
 138}
 139
 140static void lance_instance_init(Object *obj)
 141{
 142    SysBusPCNetState *d = SYSBUS_PCNET(obj);
 143    PCNetState *s = &d->state;
 144
 145    device_add_bootindex_property(obj, &s->conf.bootindex,
 146                                  "bootindex", "/ethernet-phy@0",
 147                                  DEVICE(obj), NULL);
 148}
 149
 150static Property lance_properties[] = {
 151    DEFINE_PROP_PTR("dma", SysBusPCNetState, state.dma_opaque),
 152    DEFINE_NIC_PROPERTIES(SysBusPCNetState, state.conf),
 153    DEFINE_PROP_END_OF_LIST(),
 154};
 155
 156static void lance_class_init(ObjectClass *klass, void *data)
 157{
 158    DeviceClass *dc = DEVICE_CLASS(klass);
 159    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 160
 161    k->init = lance_init;
 162    set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
 163    dc->fw_name = "ethernet";
 164    dc->reset = lance_reset;
 165    dc->vmsd = &vmstate_lance;
 166    dc->props = lance_properties;
 167    /* Reason: pointer property "dma" */
 168    dc->cannot_instantiate_with_device_add_yet = true;
 169}
 170
 171static const TypeInfo lance_info = {
 172    .name          = TYPE_LANCE,
 173    .parent        = TYPE_SYS_BUS_DEVICE,
 174    .instance_size = sizeof(SysBusPCNetState),
 175    .class_init    = lance_class_init,
 176    .instance_init = lance_instance_init,
 177};
 178
 179static void lance_register_types(void)
 180{
 181    type_register_static(&lance_info);
 182}
 183
 184type_init(lance_register_types)
 185