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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 | ||
30 | #include "pci.h" | |
31 | #include "net.h" | |
32 | #include "loader.h" | |
33 | #include "qemu-timer.h" | |
34 | ||
35 | #include "pcnet.h" | |
36 | ||
37 | //#define PCNET_DEBUG | |
38 | //#define PCNET_DEBUG_IO | |
39 | //#define PCNET_DEBUG_BCR | |
40 | //#define PCNET_DEBUG_CSR | |
41 | //#define PCNET_DEBUG_RMD | |
42 | //#define PCNET_DEBUG_TMD | |
43 | //#define PCNET_DEBUG_MATCH | |
44 | ||
45 | ||
46 | typedef struct { | |
47 | PCIDevice pci_dev; | |
48 | PCNetState state; | |
bd8d6f7c | 49 | MemoryRegion io_bar; |
661a1799 PB |
50 | } PCIPCNetState; |
51 | ||
52 | static void pcnet_aprom_writeb(void *opaque, uint32_t addr, uint32_t val) | |
53 | { | |
54 | PCNetState *s = opaque; | |
55 | #ifdef PCNET_DEBUG | |
56 | printf("pcnet_aprom_writeb addr=0x%08x val=0x%02x\n", addr, val); | |
57 | #endif | |
58 | /* Check APROMWE bit to enable write access */ | |
59 | if (pcnet_bcr_readw(s,2) & 0x100) | |
60 | s->prom[addr & 15] = val; | |
61 | } | |
62 | ||
63 | static uint32_t pcnet_aprom_readb(void *opaque, uint32_t addr) | |
64 | { | |
65 | PCNetState *s = opaque; | |
66 | uint32_t val = s->prom[addr & 15]; | |
67 | #ifdef PCNET_DEBUG | |
68 | printf("pcnet_aprom_readb addr=0x%08x val=0x%02x\n", addr, val); | |
69 | #endif | |
70 | return val; | |
71 | } | |
72 | ||
bd8d6f7c AK |
73 | static uint64_t pcnet_ioport_read(void *opaque, target_phys_addr_t addr, |
74 | unsigned size) | |
661a1799 | 75 | { |
bd8d6f7c | 76 | PCNetState *d = opaque; |
661a1799 | 77 | |
bd8d6f7c AK |
78 | if (addr < 16 && size == 1) { |
79 | return pcnet_aprom_readb(d, addr); | |
80 | } else if (addr >= 0x10 && addr < 0x20 && size == 2) { | |
81 | return pcnet_ioport_readw(d, addr); | |
82 | } else if (addr >= 0x10 && addr < 0x20 && size == 4) { | |
83 | return pcnet_ioport_readl(d, addr); | |
84 | } | |
85 | return ((uint64_t)1 << (size * 8)) - 1; | |
86 | } | |
661a1799 | 87 | |
bd8d6f7c AK |
88 | static void pcnet_ioport_write(void *opaque, target_phys_addr_t addr, |
89 | uint64_t data, unsigned size) | |
90 | { | |
91 | PCNetState *d = opaque; | |
661a1799 | 92 | |
bd8d6f7c AK |
93 | if (addr < 16 && size == 1) { |
94 | return pcnet_aprom_writeb(d, addr, data); | |
95 | } else if (addr >= 0x10 && addr < 0x20 && size == 2) { | |
96 | return pcnet_ioport_writew(d, addr, data); | |
97 | } else if (addr >= 0x10 && addr < 0x20 && size == 4) { | |
98 | return pcnet_ioport_writel(d, addr, data); | |
99 | } | |
661a1799 PB |
100 | } |
101 | ||
bd8d6f7c AK |
102 | static const MemoryRegionOps pcnet_io_ops = { |
103 | .read = pcnet_ioport_read, | |
104 | .write = pcnet_ioport_write, | |
105 | .endianness = DEVICE_NATIVE_ENDIAN, | |
106 | }; | |
107 | ||
661a1799 PB |
108 | static void pcnet_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
109 | { | |
110 | PCNetState *d = opaque; | |
111 | #ifdef PCNET_DEBUG_IO | |
112 | printf("pcnet_mmio_writeb addr=0x" TARGET_FMT_plx" val=0x%02x\n", addr, | |
113 | val); | |
114 | #endif | |
115 | if (!(addr & 0x10)) | |
116 | pcnet_aprom_writeb(d, addr & 0x0f, val); | |
117 | } | |
118 | ||
119 | static uint32_t pcnet_mmio_readb(void *opaque, target_phys_addr_t addr) | |
120 | { | |
121 | PCNetState *d = opaque; | |
122 | uint32_t val = -1; | |
123 | if (!(addr & 0x10)) | |
124 | val = pcnet_aprom_readb(d, addr & 0x0f); | |
125 | #ifdef PCNET_DEBUG_IO | |
126 | printf("pcnet_mmio_readb addr=0x" TARGET_FMT_plx " val=0x%02x\n", addr, | |
127 | val & 0xff); | |
128 | #endif | |
129 | return val; | |
130 | } | |
131 | ||
132 | static void pcnet_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val) | |
133 | { | |
134 | PCNetState *d = opaque; | |
135 | #ifdef PCNET_DEBUG_IO | |
136 | printf("pcnet_mmio_writew addr=0x" TARGET_FMT_plx " val=0x%04x\n", addr, | |
137 | val); | |
138 | #endif | |
139 | if (addr & 0x10) | |
140 | pcnet_ioport_writew(d, addr & 0x0f, val); | |
141 | else { | |
142 | addr &= 0x0f; | |
143 | pcnet_aprom_writeb(d, addr, val & 0xff); | |
144 | pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8); | |
145 | } | |
146 | } | |
147 | ||
148 | static uint32_t pcnet_mmio_readw(void *opaque, target_phys_addr_t addr) | |
149 | { | |
150 | PCNetState *d = opaque; | |
151 | uint32_t val = -1; | |
152 | if (addr & 0x10) | |
153 | val = pcnet_ioport_readw(d, addr & 0x0f); | |
154 | else { | |
155 | addr &= 0x0f; | |
156 | val = pcnet_aprom_readb(d, addr+1); | |
157 | val <<= 8; | |
158 | val |= pcnet_aprom_readb(d, addr); | |
159 | } | |
160 | #ifdef PCNET_DEBUG_IO | |
161 | printf("pcnet_mmio_readw addr=0x" TARGET_FMT_plx" val = 0x%04x\n", addr, | |
162 | val & 0xffff); | |
163 | #endif | |
164 | return val; | |
165 | } | |
166 | ||
167 | static void pcnet_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val) | |
168 | { | |
169 | PCNetState *d = opaque; | |
170 | #ifdef PCNET_DEBUG_IO | |
171 | printf("pcnet_mmio_writel addr=0x" TARGET_FMT_plx" val=0x%08x\n", addr, | |
172 | val); | |
173 | #endif | |
174 | if (addr & 0x10) | |
175 | pcnet_ioport_writel(d, addr & 0x0f, val); | |
176 | else { | |
177 | addr &= 0x0f; | |
178 | pcnet_aprom_writeb(d, addr, val & 0xff); | |
179 | pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8); | |
180 | pcnet_aprom_writeb(d, addr+2, (val & 0xff0000) >> 16); | |
181 | pcnet_aprom_writeb(d, addr+3, (val & 0xff000000) >> 24); | |
182 | } | |
183 | } | |
184 | ||
185 | static uint32_t pcnet_mmio_readl(void *opaque, target_phys_addr_t addr) | |
186 | { | |
187 | PCNetState *d = opaque; | |
188 | uint32_t val; | |
189 | if (addr & 0x10) | |
190 | val = pcnet_ioport_readl(d, addr & 0x0f); | |
191 | else { | |
192 | addr &= 0x0f; | |
193 | val = pcnet_aprom_readb(d, addr+3); | |
194 | val <<= 8; | |
195 | val |= pcnet_aprom_readb(d, addr+2); | |
196 | val <<= 8; | |
197 | val |= pcnet_aprom_readb(d, addr+1); | |
198 | val <<= 8; | |
199 | val |= pcnet_aprom_readb(d, addr); | |
200 | } | |
201 | #ifdef PCNET_DEBUG_IO | |
202 | printf("pcnet_mmio_readl addr=0x" TARGET_FMT_plx " val=0x%08x\n", addr, | |
203 | val); | |
204 | #endif | |
205 | return val; | |
206 | } | |
207 | ||
208 | static const VMStateDescription vmstate_pci_pcnet = { | |
209 | .name = "pcnet", | |
210 | .version_id = 3, | |
211 | .minimum_version_id = 2, | |
212 | .minimum_version_id_old = 2, | |
213 | .fields = (VMStateField []) { | |
214 | VMSTATE_PCI_DEVICE(pci_dev, PCIPCNetState), | |
215 | VMSTATE_STRUCT(state, PCIPCNetState, 0, vmstate_pcnet, PCNetState), | |
216 | VMSTATE_END_OF_LIST() | |
217 | } | |
218 | }; | |
219 | ||
220 | /* PCI interface */ | |
221 | ||
bd8d6f7c AK |
222 | static const MemoryRegionOps pcnet_mmio_ops = { |
223 | .old_mmio = { | |
224 | .read = { pcnet_mmio_readb, pcnet_mmio_readw, pcnet_mmio_readl }, | |
225 | .write = { pcnet_mmio_writeb, pcnet_mmio_writew, pcnet_mmio_writel }, | |
226 | }, | |
227 | .endianness = DEVICE_NATIVE_ENDIAN, | |
661a1799 PB |
228 | }; |
229 | ||
661a1799 PB |
230 | static void pci_physical_memory_write(void *dma_opaque, target_phys_addr_t addr, |
231 | uint8_t *buf, int len, int do_bswap) | |
232 | { | |
233 | cpu_physical_memory_write(addr, buf, len); | |
234 | } | |
235 | ||
236 | static void pci_physical_memory_read(void *dma_opaque, target_phys_addr_t addr, | |
237 | uint8_t *buf, int len, int do_bswap) | |
238 | { | |
239 | cpu_physical_memory_read(addr, buf, len); | |
240 | } | |
241 | ||
242 | static void pci_pcnet_cleanup(VLANClientState *nc) | |
243 | { | |
244 | PCNetState *d = DO_UPCAST(NICState, nc, nc)->opaque; | |
245 | ||
246 | pcnet_common_cleanup(d); | |
247 | } | |
248 | ||
249 | static int pci_pcnet_uninit(PCIDevice *dev) | |
250 | { | |
251 | PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev, dev); | |
252 | ||
bd8d6f7c AK |
253 | memory_region_destroy(&d->state.mmio); |
254 | memory_region_destroy(&d->io_bar); | |
661a1799 PB |
255 | qemu_del_timer(d->state.poll_timer); |
256 | qemu_free_timer(d->state.poll_timer); | |
257 | qemu_del_vlan_client(&d->state.nic->nc); | |
258 | return 0; | |
259 | } | |
260 | ||
261 | static NetClientInfo net_pci_pcnet_info = { | |
262 | .type = NET_CLIENT_TYPE_NIC, | |
263 | .size = sizeof(NICState), | |
264 | .can_receive = pcnet_can_receive, | |
265 | .receive = pcnet_receive, | |
266 | .cleanup = pci_pcnet_cleanup, | |
267 | }; | |
268 | ||
269 | static int pci_pcnet_init(PCIDevice *pci_dev) | |
270 | { | |
271 | PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev, pci_dev); | |
272 | PCNetState *s = &d->state; | |
273 | uint8_t *pci_conf; | |
274 | ||
275 | #if 0 | |
276 | printf("sizeof(RMD)=%d, sizeof(TMD)=%d\n", | |
277 | sizeof(struct pcnet_RMD), sizeof(struct pcnet_TMD)); | |
278 | #endif | |
279 | ||
280 | pci_conf = pci_dev->config; | |
281 | ||
661a1799 PB |
282 | pci_set_word(pci_conf + PCI_STATUS, |
283 | PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM); | |
661a1799 PB |
284 | |
285 | pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, 0x0); | |
286 | pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, 0x0); | |
287 | ||
817e0b6f | 288 | pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin A */ |
661a1799 PB |
289 | pci_conf[PCI_MIN_GNT] = 0x06; |
290 | pci_conf[PCI_MAX_LAT] = 0xff; | |
291 | ||
292 | /* Handler for memory-mapped I/O */ | |
145aebec | 293 | memory_region_init_io(&d->state.mmio, &pcnet_mmio_ops, s, "pcnet-mmio", |
bd8d6f7c | 294 | PCNET_PNPMMIO_SIZE); |
661a1799 | 295 | |
145aebec | 296 | memory_region_init_io(&d->io_bar, &pcnet_io_ops, s, "pcnet-io", |
bd8d6f7c | 297 | PCNET_IOPORT_SIZE); |
e824b2cc | 298 | pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->io_bar); |
661a1799 | 299 | |
e824b2cc | 300 | pci_register_bar(pci_dev, 1, 0, &s->mmio); |
661a1799 PB |
301 | |
302 | s->irq = pci_dev->irq[0]; | |
303 | s->phys_mem_read = pci_physical_memory_read; | |
304 | s->phys_mem_write = pci_physical_memory_write; | |
305 | ||
306 | if (!pci_dev->qdev.hotplugged) { | |
307 | static int loaded = 0; | |
308 | if (!loaded) { | |
5ee8ad71 | 309 | rom_add_option("pxe-pcnet.rom", -1); |
661a1799 PB |
310 | loaded = 1; |
311 | } | |
312 | } | |
313 | ||
314 | return pcnet_common_init(&pci_dev->qdev, s, &net_pci_pcnet_info); | |
315 | } | |
316 | ||
317 | static void pci_reset(DeviceState *dev) | |
318 | { | |
319 | PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev.qdev, dev); | |
320 | ||
321 | pcnet_h_reset(&d->state); | |
322 | } | |
323 | ||
324 | static PCIDeviceInfo pcnet_info = { | |
325 | .qdev.name = "pcnet", | |
326 | .qdev.size = sizeof(PCIPCNetState), | |
327 | .qdev.reset = pci_reset, | |
328 | .qdev.vmsd = &vmstate_pci_pcnet, | |
329 | .init = pci_pcnet_init, | |
330 | .exit = pci_pcnet_uninit, | |
d7dccd11 IY |
331 | .vendor_id = PCI_VENDOR_ID_AMD, |
332 | .device_id = PCI_DEVICE_ID_AMD_LANCE, | |
333 | .revision = 0x10, | |
334 | .class_id = PCI_CLASS_NETWORK_ETHERNET, | |
661a1799 PB |
335 | .qdev.props = (Property[]) { |
336 | DEFINE_NIC_PROPERTIES(PCIPCNetState, state.conf), | |
337 | DEFINE_PROP_END_OF_LIST(), | |
338 | } | |
339 | }; | |
340 | ||
341 | static void pci_pcnet_register_devices(void) | |
342 | { | |
343 | pci_qdev_register(&pcnet_info); | |
344 | } | |
345 | ||
346 | device_init(pci_pcnet_register_devices) |