text: /*
   * QEMU AMD PC-Net II (Am79C970A) emulation
   *
   * Copyright (c) 2004 Antony T Curtis
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  /* This software was written to be compatible with the specification:
   * AMD Am79C970A PCnet-PCI II Ethernet Controller Data-Sheet
   * AMD Publication# 19436  Rev:E  Amendment/0  Issue Date: June 2000
   */
  
  /*
   * On Sparc32, this is the Lance (Am7990) part of chip STP2000 (Master I/O), also
   * produced as NCR89C100. See
   * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C100.txt
   * and
   * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR92C990.txt
   */
  
  #include "hw/sysbus.h"
  #include "net/net.h"
  #include "qemu/timer.h"
  #include "qemu/sockets.h"
  #include "hw/sparc/sun4m.h"
  #include "pcnet.h"
  #include "trace.h"
  #include "sysemu/sysemu.h"
  
  #define TYPE_LANCE "lance"
  #define SYSBUS_PCNET(obj) \
      OBJECT_CHECK(SysBusPCNetState, (obj), TYPE_LANCE)
  
  typedef struct {
      SysBusDevice parent_obj;
  
      PCNetState state;
  } SysBusPCNetState;
  
  static void parent_lance_reset(void *opaque, int irq, int level)
  {
      SysBusPCNetState *d = opaque;
      if (level)
          pcnet_h_reset(&d->state);
  }
  
  static void lance_mem_write(void *opaque, hwaddr addr,
                              uint64_t val, unsigned size)
  {
      SysBusPCNetState *d = opaque;
  
      trace_lance_mem_writew(addr, val & 0xffff);
      pcnet_ioport_writew(&d->state, addr, val & 0xffff);
  }
  
  static uint64_t lance_mem_read(void *opaque, hwaddr addr,
                                 unsigned size)
  {
      SysBusPCNetState *d = opaque;
      uint32_t val;
  
      val = pcnet_ioport_readw(&d->state, addr);
      trace_lance_mem_readw(addr, val & 0xffff);
      return val & 0xffff;
  }
  
  static const MemoryRegionOps lance_mem_ops = {
      .read = lance_mem_read,
      .write = lance_mem_write,
      .endianness = DEVICE_NATIVE_ENDIAN,
      .valid = {
          .min_access_size = 2,
          .max_access_size = 2,
      },
  };
  
  static NetClientInfo net_lance_info = {
      .type = NET_CLIENT_OPTIONS_KIND_NIC,
      .size = sizeof(NICState),
      .receive = pcnet_receive,
      .link_status_changed = pcnet_set_link_status,
  };
  
  static const VMStateDescription vmstate_lance = {
      .name = "pcnet",
      .version_id = 3,
      .minimum_version_id = 2,
      .fields = (VMStateField[]) {
          VMSTATE_STRUCT(state, SysBusPCNetState, 0, vmstate_pcnet, PCNetState),
          VMSTATE_END_OF_LIST()
      }
  };
  
  static int lance_init(SysBusDevice *sbd)
  {
      DeviceState *dev = DEVICE(sbd);
      SysBusPCNetState *d = SYSBUS_PCNET(dev);
      PCNetState *s = &d->state;
  
      memory_region_init_io(&s->mmio, OBJECT(d), &lance_mem_ops, d,
                            "lance-mmio", 4);
  
      qdev_init_gpio_in(dev, parent_lance_reset, 1);
  
      sysbus_init_mmio(sbd, &s->mmio);
  
      sysbus_init_irq(sbd, &s->irq);
  
      s->phys_mem_read = ledma_memory_read;
      s->phys_mem_write = ledma_memory_write;
      pcnet_common_init(dev, s, &net_lance_info);
      return 0;
  }
  
  static void lance_reset(DeviceState *dev)
  {
      SysBusPCNetState *d = SYSBUS_PCNET(dev);
  
      pcnet_h_reset(&d->state);
  }
  
  static void lance_instance_init(Object *obj)
  {
      SysBusPCNetState *d = SYSBUS_PCNET(obj);
      PCNetState *s = &d->state;
  
      device_add_bootindex_property(obj, &s->conf.bootindex,
                                    "bootindex", "/ethernet-phy@0",
                                    DEVICE(obj), NULL);
  }
  
  static Property lance_properties[] = {
      DEFINE_PROP_PTR("dma", SysBusPCNetState, state.dma_opaque),
      DEFINE_NIC_PROPERTIES(SysBusPCNetState, state.conf),
      DEFINE_PROP_END_OF_LIST(),
  };
  
  static void lance_class_init(ObjectClass *klass, void *data)
  {
      DeviceClass *dc = DEVICE_CLASS(klass);
      SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
  
      k->init = lance_init;
      set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
      dc->fw_name = "ethernet";
      dc->reset = lance_reset;
      dc->vmsd = &vmstate_lance;
      dc->props = lance_properties;
      /* Reason: pointer property "dma" */
      dc->cannot_instantiate_with_device_add_yet = true;
  }
  
  static const TypeInfo lance_info = {
      .name          = TYPE_LANCE,
      .parent        = TYPE_SYS_BUS_DEVICE,
      .instance_size = sizeof(SysBusPCNetState),
      .class_init    = lance_class_init,
      .instance_init = lance_instance_init,
  };
  
  static void lance_register_types(void)
  {
      type_register_static(&lance_info);
  }
  
  type_init(lance_register_types)
  