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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 "sysbus.h"
39 #include "net.h"
40 #include "qemu-timer.h"
41 #include "qemu_socket.h"
42 #include "sun4m.h"
43 #include "pcnet.h"
44 #include "trace.h"
45
46 typedef struct {
47     SysBusDevice busdev;
48     PCNetState state;
49 } SysBusPCNetState;
50
51 static void parent_lance_reset(void *opaque, int irq, int level)
52 {
53     SysBusPCNetState *d = opaque;
54     if (level)
55         pcnet_h_reset(&d->state);
56 }
57
58 static void lance_mem_write(void *opaque, target_phys_addr_t addr,
59                             uint64_t val, unsigned size)
60 {
61     SysBusPCNetState *d = opaque;
62
63     trace_lance_mem_writew(addr, val & 0xffff);
64     pcnet_ioport_writew(&d->state, addr, val & 0xffff);
65 }
66
67 static uint64_t lance_mem_read(void *opaque, target_phys_addr_t addr,
68                                unsigned size)
69 {
70     SysBusPCNetState *d = opaque;
71     uint32_t val;
72
73     val = pcnet_ioport_readw(&d->state, addr);
74     trace_lance_mem_readw(addr, val & 0xffff);
75     return val & 0xffff;
76 }
77
78 static const MemoryRegionOps lance_mem_ops = {
79     .read = lance_mem_read,
80     .write = lance_mem_write,
81     .endianness = DEVICE_NATIVE_ENDIAN,
82     .valid = {
83         .min_access_size = 2,
84         .max_access_size = 2,
85     },
86 };
87
88 static void lance_cleanup(VLANClientState *nc)
89 {
90     PCNetState *d = DO_UPCAST(NICState, nc, nc)->opaque;
91
92     pcnet_common_cleanup(d);
93 }
94
95 static NetClientInfo net_lance_info = {
96     .type = NET_CLIENT_TYPE_NIC,
97     .size = sizeof(NICState),
98     .can_receive = pcnet_can_receive,
99     .receive = pcnet_receive,
100     .link_status_changed = pcnet_set_link_status,
101     .cleanup = lance_cleanup,
102 };
103
104 static const VMStateDescription vmstate_lance = {
105     .name = "pcnet",
106     .version_id = 3,
107     .minimum_version_id = 2,
108     .minimum_version_id_old = 2,
109     .fields      = (VMStateField []) {
110         VMSTATE_STRUCT(state, SysBusPCNetState, 0, vmstate_pcnet, PCNetState),
111         VMSTATE_END_OF_LIST()
112     }
113 };
114
115 static int lance_init(SysBusDevice *dev)
116 {
117     SysBusPCNetState *d = FROM_SYSBUS(SysBusPCNetState, dev);
118     PCNetState *s = &d->state;
119
120     memory_region_init_io(&s->mmio, &lance_mem_ops, d, "lance-mmio", 4);
121
122     qdev_init_gpio_in(&dev->qdev, parent_lance_reset, 1);
123
124     sysbus_init_mmio(dev, &s->mmio);
125
126     sysbus_init_irq(dev, &s->irq);
127
128     s->phys_mem_read = ledma_memory_read;
129     s->phys_mem_write = ledma_memory_write;
130     return pcnet_common_init(&dev->qdev, s, &net_lance_info);
131 }
132
133 static void lance_reset(DeviceState *dev)
134 {
135     SysBusPCNetState *d = DO_UPCAST(SysBusPCNetState, busdev.qdev, dev);
136
137     pcnet_h_reset(&d->state);
138 }
139
140 static Property lance_properties[] = {
141     DEFINE_PROP_PTR("dma", SysBusPCNetState, state.dma_opaque),
142     DEFINE_NIC_PROPERTIES(SysBusPCNetState, state.conf),
143     DEFINE_PROP_END_OF_LIST(),
144 };
145
146 static void lance_class_init(ObjectClass *klass, void *data)
147 {
148     DeviceClass *dc = DEVICE_CLASS(klass);
149     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
150
151     k->init = lance_init;
152     dc->fw_name = "ethernet";
153     dc->reset = lance_reset;
154     dc->vmsd = &vmstate_lance;
155     dc->props = lance_properties;
156 }
157
158 static TypeInfo lance_info = {
159     .name          = "lance",
160     .parent        = TYPE_SYS_BUS_DEVICE,
161     .instance_size = sizeof(SysBusPCNetState),
162     .class_init    = lance_class_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)
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