hw/net/lance.c

   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 "qemu/timer.h"
  40 #include "hw/sparc/sparc32_dma.h"
  41 #include "hw/net/lance.h"
  42 #include "trace.h"
  43 #include "sysemu/sysemu.h"
  44
  45
  46 static void parent_lance_reset(void *opaque, int irq, int level)
  47 {
  48     SysBusPCNetState *d = opaque;
  49     if (level)
  50         pcnet_h_reset(&d->state);
  51 }
  52
  53 static void lance_mem_write(void *opaque, hwaddr addr,
  54                             uint64_t val, unsigned size)
  55 {
  56     SysBusPCNetState *d = opaque;
  57
  58     trace_lance_mem_writew(addr, val & 0xffff);
  59     pcnet_ioport_writew(&d->state, addr, val & 0xffff);
  60 }
  61
  62 static uint64_t lance_mem_read(void *opaque, hwaddr addr,
  63                                unsigned size)
  64 {
  65     SysBusPCNetState *d = opaque;
  66     uint32_t val;
  67
  68     val = pcnet_ioport_readw(&d->state, addr);
  69     trace_lance_mem_readw(addr, val & 0xffff);
  70     return val & 0xffff;
  71 }
  72
  73 static const MemoryRegionOps lance_mem_ops = {
  74     .read = lance_mem_read,
  75     .write = lance_mem_write,
  76     .endianness = DEVICE_NATIVE_ENDIAN,
  77     .valid = {
  78         .min_access_size = 2,
  79         .max_access_size = 2,
  80     },
  81 };
  82
  83 static NetClientInfo net_lance_info = {
  84     .type = NET_CLIENT_DRIVER_NIC,
  85     .size = sizeof(NICState),
  86     .receive = pcnet_receive,
  87     .link_status_changed = pcnet_set_link_status,
  88 };
  89
  90 static const VMStateDescription vmstate_lance = {
  91     .name = "pcnet",
  92     .version_id = 3,
  93     .minimum_version_id = 2,
  94     .fields = (VMStateField[]) {
  95         VMSTATE_STRUCT(state, SysBusPCNetState, 0, vmstate_pcnet, PCNetState),
  96         VMSTATE_END_OF_LIST()
  97     }
  98 };
  99
 100 static void lance_realize(DeviceState *dev, Error **errp)
 101 {
 102     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
 103     SysBusPCNetState *d = SYSBUS_PCNET(dev);
 104     PCNetState *s = &d->state;
 105
 106     memory_region_init_io(&s->mmio, OBJECT(d), &lance_mem_ops, d,
 107                           "lance-mmio", 4);
 108
 109     qdev_init_gpio_in(dev, parent_lance_reset, 1);
 110
 111     sysbus_init_mmio(sbd, &s->mmio);
 112
 113     sysbus_init_irq(sbd, &s->irq);
 114
 115     s->phys_mem_read = ledma_memory_read;
 116     s->phys_mem_write = ledma_memory_write;
 117     pcnet_common_init(dev, s, &net_lance_info);
 118 }
 119
 120 static void lance_reset(DeviceState *dev)
 121 {
 122     SysBusPCNetState *d = SYSBUS_PCNET(dev);
 123
 124     pcnet_h_reset(&d->state);
 125 }
 126
 127 static void lance_instance_init(Object *obj)
 128 {
 129     SysBusPCNetState *d = SYSBUS_PCNET(obj);
 130     PCNetState *s = &d->state;
 131
 132     device_add_bootindex_property(obj, &s->conf.bootindex,
 133                                   "bootindex", "/ethernet-phy@0",
 134                                   DEVICE(obj), NULL);
 135 }
 136
 137 static Property lance_properties[] = {
 138     DEFINE_PROP_PTR("dma", SysBusPCNetState, state.dma_opaque),
 139     DEFINE_NIC_PROPERTIES(SysBusPCNetState, state.conf),
 140     DEFINE_PROP_END_OF_LIST(),
 141 };
 142
 143 static void lance_class_init(ObjectClass *klass, void *data)
 144 {
 145     DeviceClass *dc = DEVICE_CLASS(klass);
 146
 147     dc->realize = lance_realize;
 148     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
 149     dc->fw_name = "ethernet";
 150     dc->reset = lance_reset;
 151     dc->vmsd = &vmstate_lance;
 152     dc->props = lance_properties;
 153     /* Reason: pointer property "dma" */
 154     dc->user_creatable = false;
 155 }
 156
 157 static const TypeInfo lance_info = {
 158     .name          = TYPE_LANCE,
 159     .parent        = TYPE_SYS_BUS_DEVICE,
 160     .instance_size = sizeof(SysBusPCNetState),
 161     .class_init    = lance_class_init,
 162     .instance_init = lance_instance_init,
 163 };
 164
 165 static void lance_register_types(void)
 166 {
 167     type_register_static(&lance_info);
 168 }
 169
 170 type_init(lance_register_types)