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661a1799 PB |
1 | /* |
2 | * QEMU AMD PC-Net II (Am79C970A) PCI 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 | ||
e8d40465 | 30 | #include "qemu/osdep.h" |
64552b6b | 31 | #include "hw/irq.h" |
edf5ca5d | 32 | #include "hw/pci/pci_device.h" |
a27bd6c7 | 33 | #include "hw/qdev-properties.h" |
d6454270 | 34 | #include "migration/vmstate.h" |
1422e32d | 35 | #include "net/net.h" |
0b8fa32f | 36 | #include "qemu/module.h" |
1de7afc9 | 37 | #include "qemu/timer.h" |
9c17d615 | 38 | #include "sysemu/dma.h" |
ea3b3511 | 39 | #include "sysemu/sysemu.h" |
32c95249 | 40 | #include "trace.h" |
661a1799 | 41 | |
47b43a1f | 42 | #include "pcnet.h" |
db1015e9 | 43 | #include "qom/object.h" |
661a1799 PB |
44 | |
45 | //#define PCNET_DEBUG | |
46 | //#define PCNET_DEBUG_IO | |
47 | //#define PCNET_DEBUG_BCR | |
48 | //#define PCNET_DEBUG_CSR | |
49 | //#define PCNET_DEBUG_RMD | |
50 | //#define PCNET_DEBUG_TMD | |
51 | //#define PCNET_DEBUG_MATCH | |
52 | ||
1f8c7946 PC |
53 | #define TYPE_PCI_PCNET "pcnet" |
54 | ||
8063396b | 55 | OBJECT_DECLARE_SIMPLE_TYPE(PCIPCNetState, PCI_PCNET) |
661a1799 | 56 | |
db1015e9 | 57 | struct PCIPCNetState { |
1f8c7946 PC |
58 | /*< private >*/ |
59 | PCIDevice parent_obj; | |
60 | /*< public >*/ | |
61 | ||
661a1799 | 62 | PCNetState state; |
bd8d6f7c | 63 | MemoryRegion io_bar; |
db1015e9 | 64 | }; |
661a1799 PB |
65 | |
66 | static void pcnet_aprom_writeb(void *opaque, uint32_t addr, uint32_t val) | |
67 | { | |
68 | PCNetState *s = opaque; | |
32c95249 DK |
69 | |
70 | trace_pcnet_aprom_writeb(opaque, addr, val); | |
488a1a5d | 71 | if (BCR_APROMWE(s)) { |
661a1799 | 72 | s->prom[addr & 15] = val; |
488a1a5d | 73 | } |
661a1799 PB |
74 | } |
75 | ||
76 | static uint32_t pcnet_aprom_readb(void *opaque, uint32_t addr) | |
77 | { | |
78 | PCNetState *s = opaque; | |
79 | uint32_t val = s->prom[addr & 15]; | |
32c95249 DK |
80 | |
81 | trace_pcnet_aprom_readb(opaque, addr, val); | |
661a1799 PB |
82 | return val; |
83 | } | |
84 | ||
a8170e5e | 85 | static uint64_t pcnet_ioport_read(void *opaque, hwaddr addr, |
bd8d6f7c | 86 | unsigned size) |
661a1799 | 87 | { |
bd8d6f7c | 88 | PCNetState *d = opaque; |
661a1799 | 89 | |
32c95249 | 90 | trace_pcnet_ioport_read(opaque, addr, size); |
7ba79741 JK |
91 | if (addr < 0x10) { |
92 | if (!BCR_DWIO(d) && size == 1) { | |
93 | return pcnet_aprom_readb(d, addr); | |
94 | } else if (!BCR_DWIO(d) && (addr & 1) == 0 && size == 2) { | |
95 | return pcnet_aprom_readb(d, addr) | | |
96 | (pcnet_aprom_readb(d, addr + 1) << 8); | |
97 | } else if (BCR_DWIO(d) && (addr & 3) == 0 && size == 4) { | |
98 | return pcnet_aprom_readb(d, addr) | | |
99 | (pcnet_aprom_readb(d, addr + 1) << 8) | | |
100 | (pcnet_aprom_readb(d, addr + 2) << 16) | | |
101 | (pcnet_aprom_readb(d, addr + 3) << 24); | |
102 | } | |
103 | } else { | |
104 | if (size == 2) { | |
105 | return pcnet_ioport_readw(d, addr); | |
106 | } else if (size == 4) { | |
107 | return pcnet_ioport_readl(d, addr); | |
108 | } | |
bd8d6f7c AK |
109 | } |
110 | return ((uint64_t)1 << (size * 8)) - 1; | |
111 | } | |
661a1799 | 112 | |
a8170e5e | 113 | static void pcnet_ioport_write(void *opaque, hwaddr addr, |
bd8d6f7c AK |
114 | uint64_t data, unsigned size) |
115 | { | |
116 | PCNetState *d = opaque; | |
661a1799 | 117 | |
32c95249 | 118 | trace_pcnet_ioport_write(opaque, addr, data, size); |
7ba79741 JK |
119 | if (addr < 0x10) { |
120 | if (!BCR_DWIO(d) && size == 1) { | |
121 | pcnet_aprom_writeb(d, addr, data); | |
122 | } else if (!BCR_DWIO(d) && (addr & 1) == 0 && size == 2) { | |
123 | pcnet_aprom_writeb(d, addr, data & 0xff); | |
124 | pcnet_aprom_writeb(d, addr + 1, data >> 8); | |
125 | } else if (BCR_DWIO(d) && (addr & 3) == 0 && size == 4) { | |
126 | pcnet_aprom_writeb(d, addr, data & 0xff); | |
127 | pcnet_aprom_writeb(d, addr + 1, (data >> 8) & 0xff); | |
128 | pcnet_aprom_writeb(d, addr + 2, (data >> 16) & 0xff); | |
129 | pcnet_aprom_writeb(d, addr + 3, data >> 24); | |
130 | } | |
131 | } else { | |
132 | if (size == 2) { | |
133 | pcnet_ioport_writew(d, addr, data); | |
134 | } else if (size == 4) { | |
135 | pcnet_ioport_writel(d, addr, data); | |
136 | } | |
bd8d6f7c | 137 | } |
661a1799 PB |
138 | } |
139 | ||
bd8d6f7c AK |
140 | static const MemoryRegionOps pcnet_io_ops = { |
141 | .read = pcnet_ioport_read, | |
142 | .write = pcnet_ioport_write, | |
a26405b3 | 143 | .endianness = DEVICE_LITTLE_ENDIAN, |
bd8d6f7c AK |
144 | }; |
145 | ||
661a1799 PB |
146 | static const VMStateDescription vmstate_pci_pcnet = { |
147 | .name = "pcnet", | |
148 | .version_id = 3, | |
149 | .minimum_version_id = 2, | |
d49805ae | 150 | .fields = (VMStateField[]) { |
1f8c7946 | 151 | VMSTATE_PCI_DEVICE(parent_obj, PCIPCNetState), |
661a1799 PB |
152 | VMSTATE_STRUCT(state, PCIPCNetState, 0, vmstate_pcnet, PCNetState), |
153 | VMSTATE_END_OF_LIST() | |
154 | } | |
155 | }; | |
156 | ||
157 | /* PCI interface */ | |
158 | ||
bd8d6f7c | 159 | static const MemoryRegionOps pcnet_mmio_ops = { |
b187e20f PM |
160 | .read = pcnet_ioport_read, |
161 | .write = pcnet_ioport_write, | |
5d026de8 PM |
162 | .valid.min_access_size = 1, |
163 | .valid.max_access_size = 4, | |
164 | .impl.min_access_size = 1, | |
165 | .impl.max_access_size = 4, | |
a26405b3 | 166 | .endianness = DEVICE_LITTLE_ENDIAN, |
661a1799 PB |
167 | }; |
168 | ||
a8170e5e | 169 | static void pci_physical_memory_write(void *dma_opaque, hwaddr addr, |
661a1799 PB |
170 | uint8_t *buf, int len, int do_bswap) |
171 | { | |
14fecf26 | 172 | pci_dma_write(dma_opaque, addr, buf, len); |
661a1799 PB |
173 | } |
174 | ||
a8170e5e | 175 | static void pci_physical_memory_read(void *dma_opaque, hwaddr addr, |
661a1799 PB |
176 | uint8_t *buf, int len, int do_bswap) |
177 | { | |
14fecf26 | 178 | pci_dma_read(dma_opaque, addr, buf, len); |
661a1799 PB |
179 | } |
180 | ||
f90c2bcd | 181 | static void pci_pcnet_uninit(PCIDevice *dev) |
661a1799 | 182 | { |
1f8c7946 | 183 | PCIPCNetState *d = PCI_PCNET(dev); |
661a1799 | 184 | |
9e64f8a3 | 185 | qemu_free_irq(d->state.irq); |
bc72ad67 | 186 | timer_free(d->state.poll_timer); |
948ecf21 | 187 | qemu_del_nic(d->state.nic); |
661a1799 PB |
188 | } |
189 | ||
190 | static NetClientInfo net_pci_pcnet_info = { | |
f394b2e2 | 191 | .type = NET_CLIENT_DRIVER_NIC, |
661a1799 | 192 | .size = sizeof(NICState), |
661a1799 | 193 | .receive = pcnet_receive, |
e1c2008a | 194 | .link_status_changed = pcnet_set_link_status, |
661a1799 PB |
195 | }; |
196 | ||
eb1bef94 | 197 | static void pci_pcnet_realize(PCIDevice *pci_dev, Error **errp) |
661a1799 | 198 | { |
1f8c7946 | 199 | PCIPCNetState *d = PCI_PCNET(pci_dev); |
661a1799 PB |
200 | PCNetState *s = &d->state; |
201 | uint8_t *pci_conf; | |
202 | ||
203 | #if 0 | |
204 | printf("sizeof(RMD)=%d, sizeof(TMD)=%d\n", | |
205 | sizeof(struct pcnet_RMD), sizeof(struct pcnet_TMD)); | |
206 | #endif | |
207 | ||
208 | pci_conf = pci_dev->config; | |
209 | ||
661a1799 PB |
210 | pci_set_word(pci_conf + PCI_STATUS, |
211 | PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM); | |
661a1799 PB |
212 | |
213 | pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, 0x0); | |
214 | pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, 0x0); | |
215 | ||
817e0b6f | 216 | pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin A */ |
661a1799 PB |
217 | pci_conf[PCI_MIN_GNT] = 0x06; |
218 | pci_conf[PCI_MAX_LAT] = 0xff; | |
219 | ||
220 | /* Handler for memory-mapped I/O */ | |
eedfac6f PB |
221 | memory_region_init_io(&d->state.mmio, OBJECT(d), &pcnet_mmio_ops, s, |
222 | "pcnet-mmio", PCNET_PNPMMIO_SIZE); | |
661a1799 | 223 | |
eedfac6f | 224 | memory_region_init_io(&d->io_bar, OBJECT(d), &pcnet_io_ops, s, "pcnet-io", |
bd8d6f7c | 225 | PCNET_IOPORT_SIZE); |
e824b2cc | 226 | pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->io_bar); |
661a1799 | 227 | |
e824b2cc | 228 | pci_register_bar(pci_dev, 1, 0, &s->mmio); |
661a1799 | 229 | |
9e64f8a3 | 230 | s->irq = pci_allocate_irq(pci_dev); |
661a1799 PB |
231 | s->phys_mem_read = pci_physical_memory_read; |
232 | s->phys_mem_write = pci_physical_memory_write; | |
4cc76287 | 233 | s->dma_opaque = DEVICE(pci_dev); |
661a1799 | 234 | |
4c3b2245 | 235 | pcnet_common_init(DEVICE(pci_dev), s, &net_pci_pcnet_info); |
661a1799 PB |
236 | } |
237 | ||
238 | static void pci_reset(DeviceState *dev) | |
239 | { | |
1f8c7946 | 240 | PCIPCNetState *d = PCI_PCNET(dev); |
661a1799 PB |
241 | |
242 | pcnet_h_reset(&d->state); | |
243 | } | |
244 | ||
ea3b3511 GA |
245 | static void pcnet_instance_init(Object *obj) |
246 | { | |
247 | PCIPCNetState *d = PCI_PCNET(obj); | |
248 | PCNetState *s = &d->state; | |
249 | ||
250 | device_add_bootindex_property(obj, &s->conf.bootindex, | |
251 | "bootindex", "/ethernet-phy@0", | |
40c2281c | 252 | DEVICE(obj)); |
ea3b3511 GA |
253 | } |
254 | ||
40021f08 AL |
255 | static Property pcnet_properties[] = { |
256 | DEFINE_NIC_PROPERTIES(PCIPCNetState, state.conf), | |
257 | DEFINE_PROP_END_OF_LIST(), | |
258 | }; | |
259 | ||
260 | static void pcnet_class_init(ObjectClass *klass, void *data) | |
261 | { | |
39bffca2 | 262 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
263 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
264 | ||
eb1bef94 | 265 | k->realize = pci_pcnet_realize; |
40021f08 | 266 | k->exit = pci_pcnet_uninit; |
c45e5b5b | 267 | k->romfile = "efi-pcnet.rom", |
40021f08 AL |
268 | k->vendor_id = PCI_VENDOR_ID_AMD; |
269 | k->device_id = PCI_DEVICE_ID_AMD_LANCE; | |
270 | k->revision = 0x10; | |
271 | k->class_id = PCI_CLASS_NETWORK_ETHERNET; | |
39bffca2 AL |
272 | dc->reset = pci_reset; |
273 | dc->vmsd = &vmstate_pci_pcnet; | |
4f67d30b | 274 | device_class_set_props(dc, pcnet_properties); |
125ee0ed | 275 | set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); |
40021f08 AL |
276 | } |
277 | ||
8c43a6f0 | 278 | static const TypeInfo pcnet_info = { |
1f8c7946 | 279 | .name = TYPE_PCI_PCNET, |
39bffca2 AL |
280 | .parent = TYPE_PCI_DEVICE, |
281 | .instance_size = sizeof(PCIPCNetState), | |
282 | .class_init = pcnet_class_init, | |
ea3b3511 | 283 | .instance_init = pcnet_instance_init, |
fd3b02c8 EH |
284 | .interfaces = (InterfaceInfo[]) { |
285 | { INTERFACE_CONVENTIONAL_PCI_DEVICE }, | |
286 | { }, | |
287 | }, | |
661a1799 PB |
288 | }; |
289 | ||
83f7d43a | 290 | static void pci_pcnet_register_types(void) |
661a1799 | 291 | { |
39bffca2 | 292 | type_register_static(&pcnet_info); |
661a1799 PB |
293 | } |
294 | ||
83f7d43a | 295 | type_init(pci_pcnet_register_types) |