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 52 typedef struct { 53 SysBusDevice parent_obj; 54 55 PCNetState state; 56 } SysBusPCNetState; 57 58 static 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 65 static 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 74 static 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 85 static 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 95 static 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 }; 101 102 static 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 }; 111 112 static 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 } 132 133 static void lance_reset(DeviceState *dev) 134 { 135 SysBusPCNetState *d = SYSBUS_PCNET(dev); 136 137 pcnet_h_reset(&d->state); 138 } 139 140 static 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 } 149 150 static 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 }; 155 156 static 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 } 170 171 static 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 }; 178 179 static void lance_register_types(void) 180 { 181 type_register_static(&lance_info); 182 } 183 184 type_init(lance_register_types) 185