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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
44 #include "pcnet.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_writew(void *opaque, target_phys_addr_t addr,
59                              uint32_t val)
60 {
61     SysBusPCNetState *d = opaque;
62 #ifdef PCNET_DEBUG_IO
63     printf("lance_mem_writew addr=" TARGET_FMT_plx " val=0x%04x\n", addr,
64            val & 0xffff);
65 #endif
66     pcnet_ioport_writew(&d->state, addr, val & 0xffff);
67 }
68
69 static uint32_t lance_mem_readw(void *opaque, target_phys_addr_t addr)
70 {
71     SysBusPCNetState *d = opaque;
72     uint32_t val;
73
74     val = pcnet_ioport_readw(&d->state, addr);
75 #ifdef PCNET_DEBUG_IO
76     printf("lance_mem_readw addr=" TARGET_FMT_plx " val = 0x%04x\n", addr,
77            val & 0xffff);
78 #endif
79
80     return val & 0xffff;
81 }
82
83 static CPUReadMemoryFunc * const lance_mem_read[3] = {
84     NULL,
85     lance_mem_readw,
86     NULL,
87 };
88
89 static CPUWriteMemoryFunc * const lance_mem_write[3] = {
90     NULL,
91     lance_mem_writew,
92     NULL,
93 };
94
95 static void lance_cleanup(VLANClientState *nc)
96 {
97     PCNetState *d = DO_UPCAST(NICState, nc, nc)->opaque;
98
99     pcnet_common_cleanup(d);
100 }
101
102 static NetClientInfo net_lance_info = {
103     .type = NET_CLIENT_TYPE_NIC,
104     .size = sizeof(NICState),
105     .can_receive = pcnet_can_receive,
106     .receive = pcnet_receive,
107     .cleanup = lance_cleanup,
108 };
109
110 static const VMStateDescription vmstate_lance = {
111     .name = "pcnet",
112     .version_id = 3,
113     .minimum_version_id = 2,
114     .minimum_version_id_old = 2,
115     .fields      = (VMStateField []) {
116         VMSTATE_STRUCT(state, SysBusPCNetState, 0, vmstate_pcnet, PCNetState),
117         VMSTATE_END_OF_LIST()
118     }
119 };
120
121 static int lance_init(SysBusDevice *dev)
122 {
123     SysBusPCNetState *d = FROM_SYSBUS(SysBusPCNetState, dev);
124     PCNetState *s = &d->state;
125
126     s->mmio_index =
127         cpu_register_io_memory(lance_mem_read, lance_mem_write, d);
128
129     qdev_init_gpio_in(&dev->qdev, parent_lance_reset, 1);
130
131     sysbus_init_mmio(dev, 4, s->mmio_index);
132
133     sysbus_init_irq(dev, &s->irq);
134
135     s->phys_mem_read = ledma_memory_read;
136     s->phys_mem_write = ledma_memory_write;
137     return pcnet_common_init(&dev->qdev, s, &net_lance_info);
138 }
139
140 static void lance_reset(DeviceState *dev)
141 {
142     SysBusPCNetState *d = DO_UPCAST(SysBusPCNetState, busdev.qdev, dev);
143
144     pcnet_h_reset(&d->state);
145 }
146
147 static SysBusDeviceInfo lance_info = {
148     .init       = lance_init,
149     .qdev.name  = "lance",
150     .qdev.size  = sizeof(SysBusPCNetState),
151     .qdev.reset = lance_reset,
152     .qdev.vmsd  = &vmstate_lance,
153     .qdev.props = (Property[]) {
154         DEFINE_PROP_PTR("dma", SysBusPCNetState, state.dma_opaque),
155         DEFINE_NIC_PROPERTIES(SysBusPCNetState, state.conf),
156         DEFINE_PROP_END_OF_LIST(),
157     }
158 };
159
160 static void lance_register_devices(void)
161 {
162     sysbus_register_withprop(&lance_info);
163 }
164 device_init(lance_register_devices)
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