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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; | |
49 | } PCIPCNetState; | |
50 | ||
51 | static void pcnet_aprom_writeb(void *opaque, uint32_t addr, uint32_t val) | |
52 | { | |
53 | PCNetState *s = opaque; | |
54 | #ifdef PCNET_DEBUG | |
55 | printf("pcnet_aprom_writeb addr=0x%08x val=0x%02x\n", addr, val); | |
56 | #endif | |
57 | /* Check APROMWE bit to enable write access */ | |
58 | if (pcnet_bcr_readw(s,2) & 0x100) | |
59 | s->prom[addr & 15] = val; | |
60 | } | |
61 | ||
62 | static uint32_t pcnet_aprom_readb(void *opaque, uint32_t addr) | |
63 | { | |
64 | PCNetState *s = opaque; | |
65 | uint32_t val = s->prom[addr & 15]; | |
66 | #ifdef PCNET_DEBUG | |
67 | printf("pcnet_aprom_readb addr=0x%08x val=0x%02x\n", addr, val); | |
68 | #endif | |
69 | return val; | |
70 | } | |
71 | ||
72 | static void pcnet_ioport_map(PCIDevice *pci_dev, int region_num, | |
73 | pcibus_t addr, pcibus_t size, int type) | |
74 | { | |
75 | PCNetState *d = &DO_UPCAST(PCIPCNetState, pci_dev, pci_dev)->state; | |
76 | ||
77 | #ifdef PCNET_DEBUG_IO | |
78 | printf("pcnet_ioport_map addr=0x%04"FMT_PCIBUS" size=0x%04"FMT_PCIBUS"\n", | |
79 | addr, size); | |
80 | #endif | |
81 | ||
82 | register_ioport_write(addr, 16, 1, pcnet_aprom_writeb, d); | |
83 | register_ioport_read(addr, 16, 1, pcnet_aprom_readb, d); | |
84 | ||
85 | register_ioport_write(addr + 0x10, 0x10, 2, pcnet_ioport_writew, d); | |
86 | register_ioport_read(addr + 0x10, 0x10, 2, pcnet_ioport_readw, d); | |
87 | register_ioport_write(addr + 0x10, 0x10, 4, pcnet_ioport_writel, d); | |
88 | register_ioport_read(addr + 0x10, 0x10, 4, pcnet_ioport_readl, d); | |
89 | } | |
90 | ||
91 | static void pcnet_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) | |
92 | { | |
93 | PCNetState *d = opaque; | |
94 | #ifdef PCNET_DEBUG_IO | |
95 | printf("pcnet_mmio_writeb addr=0x" TARGET_FMT_plx" val=0x%02x\n", addr, | |
96 | val); | |
97 | #endif | |
98 | if (!(addr & 0x10)) | |
99 | pcnet_aprom_writeb(d, addr & 0x0f, val); | |
100 | } | |
101 | ||
102 | static uint32_t pcnet_mmio_readb(void *opaque, target_phys_addr_t addr) | |
103 | { | |
104 | PCNetState *d = opaque; | |
105 | uint32_t val = -1; | |
106 | if (!(addr & 0x10)) | |
107 | val = pcnet_aprom_readb(d, addr & 0x0f); | |
108 | #ifdef PCNET_DEBUG_IO | |
109 | printf("pcnet_mmio_readb addr=0x" TARGET_FMT_plx " val=0x%02x\n", addr, | |
110 | val & 0xff); | |
111 | #endif | |
112 | return val; | |
113 | } | |
114 | ||
115 | static void pcnet_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val) | |
116 | { | |
117 | PCNetState *d = opaque; | |
118 | #ifdef PCNET_DEBUG_IO | |
119 | printf("pcnet_mmio_writew addr=0x" TARGET_FMT_plx " val=0x%04x\n", addr, | |
120 | val); | |
121 | #endif | |
122 | if (addr & 0x10) | |
123 | pcnet_ioport_writew(d, addr & 0x0f, val); | |
124 | else { | |
125 | addr &= 0x0f; | |
126 | pcnet_aprom_writeb(d, addr, val & 0xff); | |
127 | pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8); | |
128 | } | |
129 | } | |
130 | ||
131 | static uint32_t pcnet_mmio_readw(void *opaque, target_phys_addr_t addr) | |
132 | { | |
133 | PCNetState *d = opaque; | |
134 | uint32_t val = -1; | |
135 | if (addr & 0x10) | |
136 | val = pcnet_ioport_readw(d, addr & 0x0f); | |
137 | else { | |
138 | addr &= 0x0f; | |
139 | val = pcnet_aprom_readb(d, addr+1); | |
140 | val <<= 8; | |
141 | val |= pcnet_aprom_readb(d, addr); | |
142 | } | |
143 | #ifdef PCNET_DEBUG_IO | |
144 | printf("pcnet_mmio_readw addr=0x" TARGET_FMT_plx" val = 0x%04x\n", addr, | |
145 | val & 0xffff); | |
146 | #endif | |
147 | return val; | |
148 | } | |
149 | ||
150 | static void pcnet_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val) | |
151 | { | |
152 | PCNetState *d = opaque; | |
153 | #ifdef PCNET_DEBUG_IO | |
154 | printf("pcnet_mmio_writel addr=0x" TARGET_FMT_plx" val=0x%08x\n", addr, | |
155 | val); | |
156 | #endif | |
157 | if (addr & 0x10) | |
158 | pcnet_ioport_writel(d, addr & 0x0f, val); | |
159 | else { | |
160 | addr &= 0x0f; | |
161 | pcnet_aprom_writeb(d, addr, val & 0xff); | |
162 | pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8); | |
163 | pcnet_aprom_writeb(d, addr+2, (val & 0xff0000) >> 16); | |
164 | pcnet_aprom_writeb(d, addr+3, (val & 0xff000000) >> 24); | |
165 | } | |
166 | } | |
167 | ||
168 | static uint32_t pcnet_mmio_readl(void *opaque, target_phys_addr_t addr) | |
169 | { | |
170 | PCNetState *d = opaque; | |
171 | uint32_t val; | |
172 | if (addr & 0x10) | |
173 | val = pcnet_ioport_readl(d, addr & 0x0f); | |
174 | else { | |
175 | addr &= 0x0f; | |
176 | val = pcnet_aprom_readb(d, addr+3); | |
177 | val <<= 8; | |
178 | val |= pcnet_aprom_readb(d, addr+2); | |
179 | val <<= 8; | |
180 | val |= pcnet_aprom_readb(d, addr+1); | |
181 | val <<= 8; | |
182 | val |= pcnet_aprom_readb(d, addr); | |
183 | } | |
184 | #ifdef PCNET_DEBUG_IO | |
185 | printf("pcnet_mmio_readl addr=0x" TARGET_FMT_plx " val=0x%08x\n", addr, | |
186 | val); | |
187 | #endif | |
188 | return val; | |
189 | } | |
190 | ||
191 | static const VMStateDescription vmstate_pci_pcnet = { | |
192 | .name = "pcnet", | |
193 | .version_id = 3, | |
194 | .minimum_version_id = 2, | |
195 | .minimum_version_id_old = 2, | |
196 | .fields = (VMStateField []) { | |
197 | VMSTATE_PCI_DEVICE(pci_dev, PCIPCNetState), | |
198 | VMSTATE_STRUCT(state, PCIPCNetState, 0, vmstate_pcnet, PCNetState), | |
199 | VMSTATE_END_OF_LIST() | |
200 | } | |
201 | }; | |
202 | ||
203 | /* PCI interface */ | |
204 | ||
205 | static CPUWriteMemoryFunc * const pcnet_mmio_write[] = { | |
206 | &pcnet_mmio_writeb, | |
207 | &pcnet_mmio_writew, | |
208 | &pcnet_mmio_writel | |
209 | }; | |
210 | ||
211 | static CPUReadMemoryFunc * const pcnet_mmio_read[] = { | |
212 | &pcnet_mmio_readb, | |
213 | &pcnet_mmio_readw, | |
214 | &pcnet_mmio_readl | |
215 | }; | |
216 | ||
217 | static void pcnet_mmio_map(PCIDevice *pci_dev, int region_num, | |
218 | pcibus_t addr, pcibus_t size, int type) | |
219 | { | |
220 | PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev, pci_dev); | |
221 | ||
222 | #ifdef PCNET_DEBUG_IO | |
223 | printf("pcnet_mmio_map addr=0x%08"FMT_PCIBUS" 0x%08"FMT_PCIBUS"\n", | |
224 | addr, size); | |
225 | #endif | |
226 | ||
227 | cpu_register_physical_memory(addr, PCNET_PNPMMIO_SIZE, d->state.mmio_index); | |
228 | } | |
229 | ||
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 | ||
253 | cpu_unregister_io_memory(d->state.mmio_index); | |
254 | qemu_del_timer(d->state.poll_timer); | |
255 | qemu_free_timer(d->state.poll_timer); | |
256 | qemu_del_vlan_client(&d->state.nic->nc); | |
257 | return 0; | |
258 | } | |
259 | ||
260 | static NetClientInfo net_pci_pcnet_info = { | |
261 | .type = NET_CLIENT_TYPE_NIC, | |
262 | .size = sizeof(NICState), | |
263 | .can_receive = pcnet_can_receive, | |
264 | .receive = pcnet_receive, | |
265 | .cleanup = pci_pcnet_cleanup, | |
266 | }; | |
267 | ||
268 | static int pci_pcnet_init(PCIDevice *pci_dev) | |
269 | { | |
270 | PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev, pci_dev); | |
271 | PCNetState *s = &d->state; | |
272 | uint8_t *pci_conf; | |
273 | ||
274 | #if 0 | |
275 | printf("sizeof(RMD)=%d, sizeof(TMD)=%d\n", | |
276 | sizeof(struct pcnet_RMD), sizeof(struct pcnet_TMD)); | |
277 | #endif | |
278 | ||
279 | pci_conf = pci_dev->config; | |
280 | ||
281 | pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_AMD); | |
282 | pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_AMD_LANCE); | |
283 | pci_set_word(pci_conf + PCI_STATUS, | |
284 | PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM); | |
285 | pci_conf[PCI_REVISION_ID] = 0x10; | |
286 | pci_config_set_class(pci_conf, PCI_CLASS_NETWORK_ETHERNET); | |
287 | ||
288 | pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, 0x0); | |
289 | pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, 0x0); | |
290 | ||
291 | pci_conf[PCI_INTERRUPT_PIN] = 1; // interrupt pin 0 | |
292 | pci_conf[PCI_MIN_GNT] = 0x06; | |
293 | pci_conf[PCI_MAX_LAT] = 0xff; | |
294 | ||
295 | /* Handler for memory-mapped I/O */ | |
296 | s->mmio_index = | |
2507c12a AG |
297 | cpu_register_io_memory(pcnet_mmio_read, pcnet_mmio_write, &d->state, |
298 | DEVICE_NATIVE_ENDIAN); | |
661a1799 PB |
299 | |
300 | pci_register_bar(pci_dev, 0, PCNET_IOPORT_SIZE, | |
301 | PCI_BASE_ADDRESS_SPACE_IO, pcnet_ioport_map); | |
302 | ||
303 | pci_register_bar(pci_dev, 1, PCNET_PNPMMIO_SIZE, | |
304 | PCI_BASE_ADDRESS_SPACE_MEMORY, pcnet_mmio_map); | |
305 | ||
306 | s->irq = pci_dev->irq[0]; | |
307 | s->phys_mem_read = pci_physical_memory_read; | |
308 | s->phys_mem_write = pci_physical_memory_write; | |
309 | ||
310 | if (!pci_dev->qdev.hotplugged) { | |
311 | static int loaded = 0; | |
312 | if (!loaded) { | |
313 | rom_add_option("pxe-pcnet.bin"); | |
314 | loaded = 1; | |
315 | } | |
316 | } | |
317 | ||
318 | return pcnet_common_init(&pci_dev->qdev, s, &net_pci_pcnet_info); | |
319 | } | |
320 | ||
321 | static void pci_reset(DeviceState *dev) | |
322 | { | |
323 | PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev.qdev, dev); | |
324 | ||
325 | pcnet_h_reset(&d->state); | |
326 | } | |
327 | ||
328 | static PCIDeviceInfo pcnet_info = { | |
329 | .qdev.name = "pcnet", | |
330 | .qdev.size = sizeof(PCIPCNetState), | |
331 | .qdev.reset = pci_reset, | |
332 | .qdev.vmsd = &vmstate_pci_pcnet, | |
333 | .init = pci_pcnet_init, | |
334 | .exit = pci_pcnet_uninit, | |
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) |