lance.c (5209B)
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/module.h" 40 #include "qemu/timer.h" 41 #include "hw/sparc/sparc32_dma.h" 42 #include "migration/vmstate.h" 43 #include "hw/net/lance.h" 44 #include "hw/qdev-properties.h" 45 #include "trace.h" 46 #include "sysemu/sysemu.h" 47 48 49 static void parent_lance_reset(void *opaque, int irq, int level) 50 { 51 SysBusPCNetState *d = opaque; 52 if (level) 53 pcnet_h_reset(&d->state); 54 } 55 56 static void lance_mem_write(void *opaque, hwaddr addr, 57 uint64_t val, unsigned size) 58 { 59 SysBusPCNetState *d = opaque; 60 61 trace_lance_mem_writew(addr, val & 0xffff); 62 pcnet_ioport_writew(&d->state, addr, val & 0xffff); 63 } 64 65 static uint64_t lance_mem_read(void *opaque, hwaddr addr, 66 unsigned size) 67 { 68 SysBusPCNetState *d = opaque; 69 uint32_t val; 70 71 val = pcnet_ioport_readw(&d->state, addr); 72 trace_lance_mem_readw(addr, val & 0xffff); 73 return val & 0xffff; 74 } 75 76 static const MemoryRegionOps lance_mem_ops = { 77 .read = lance_mem_read, 78 .write = lance_mem_write, 79 .endianness = DEVICE_NATIVE_ENDIAN, 80 .valid = { 81 .min_access_size = 2, 82 .max_access_size = 2, 83 }, 84 }; 85 86 static NetClientInfo net_lance_info = { 87 .type = NET_CLIENT_DRIVER_NIC, 88 .size = sizeof(NICState), 89 .receive = pcnet_receive, 90 .link_status_changed = pcnet_set_link_status, 91 }; 92 93 static const VMStateDescription vmstate_lance = { 94 .name = "pcnet", 95 .version_id = 3, 96 .minimum_version_id = 2, 97 .fields = (VMStateField[]) { 98 VMSTATE_STRUCT(state, SysBusPCNetState, 0, vmstate_pcnet, PCNetState), 99 VMSTATE_END_OF_LIST() 100 } 101 }; 102 103 static void lance_realize(DeviceState *dev, Error **errp) 104 { 105 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 106 SysBusPCNetState *d = SYSBUS_PCNET(dev); 107 PCNetState *s = &d->state; 108 109 memory_region_init_io(&s->mmio, OBJECT(d), &lance_mem_ops, d, 110 "lance-mmio", 4); 111 112 qdev_init_gpio_in(dev, parent_lance_reset, 1); 113 114 sysbus_init_mmio(sbd, &s->mmio); 115 116 sysbus_init_irq(sbd, &s->irq); 117 118 s->phys_mem_read = ledma_memory_read; 119 s->phys_mem_write = ledma_memory_write; 120 pcnet_common_init(dev, s, &net_lance_info); 121 } 122 123 static void lance_reset(DeviceState *dev) 124 { 125 SysBusPCNetState *d = SYSBUS_PCNET(dev); 126 127 pcnet_h_reset(&d->state); 128 } 129 130 static void lance_instance_init(Object *obj) 131 { 132 SysBusPCNetState *d = SYSBUS_PCNET(obj); 133 PCNetState *s = &d->state; 134 135 device_add_bootindex_property(obj, &s->conf.bootindex, 136 "bootindex", "/ethernet-phy@0", 137 DEVICE(obj)); 138 } 139 140 static Property lance_properties[] = { 141 DEFINE_PROP_LINK("dma", SysBusPCNetState, state.dma_opaque, 142 TYPE_DEVICE, DeviceState *), 143 DEFINE_NIC_PROPERTIES(SysBusPCNetState, state.conf), 144 DEFINE_PROP_END_OF_LIST(), 145 }; 146 147 static void lance_class_init(ObjectClass *klass, void *data) 148 { 149 DeviceClass *dc = DEVICE_CLASS(klass); 150 151 dc->realize = lance_realize; 152 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); 153 dc->fw_name = "ethernet"; 154 dc->reset = lance_reset; 155 dc->vmsd = &vmstate_lance; 156 device_class_set_props(dc, lance_properties); 157 } 158 159 static const TypeInfo lance_info = { 160 .name = TYPE_LANCE, 161 .parent = TYPE_SYS_BUS_DEVICE, 162 .instance_size = sizeof(SysBusPCNetState), 163 .class_init = lance_class_init, 164 .instance_init = lance_instance_init, 165 }; 166 167 static void lance_register_types(void) 168 { 169 type_register_static(&lance_info); 170 } 171 172 type_init(lance_register_types)