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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" | |
14fecf26 | 34 | #include "dma.h" |
661a1799 PB |
35 | |
36 | #include "pcnet.h" | |
37 | ||
38 | //#define PCNET_DEBUG | |
39 | //#define PCNET_DEBUG_IO | |
40 | //#define PCNET_DEBUG_BCR | |
41 | //#define PCNET_DEBUG_CSR | |
42 | //#define PCNET_DEBUG_RMD | |
43 | //#define PCNET_DEBUG_TMD | |
44 | //#define PCNET_DEBUG_MATCH | |
45 | ||
46 | ||
47 | typedef struct { | |
48 | PCIDevice pci_dev; | |
49 | PCNetState state; | |
bd8d6f7c | 50 | MemoryRegion io_bar; |
661a1799 PB |
51 | } PCIPCNetState; |
52 | ||
53 | static void pcnet_aprom_writeb(void *opaque, uint32_t addr, uint32_t val) | |
54 | { | |
55 | PCNetState *s = opaque; | |
56 | #ifdef PCNET_DEBUG | |
57 | printf("pcnet_aprom_writeb addr=0x%08x val=0x%02x\n", addr, val); | |
58 | #endif | |
59 | /* Check APROMWE bit to enable write access */ | |
60 | if (pcnet_bcr_readw(s,2) & 0x100) | |
61 | s->prom[addr & 15] = val; | |
62 | } | |
63 | ||
64 | static uint32_t pcnet_aprom_readb(void *opaque, uint32_t addr) | |
65 | { | |
66 | PCNetState *s = opaque; | |
67 | uint32_t val = s->prom[addr & 15]; | |
68 | #ifdef PCNET_DEBUG | |
69 | printf("pcnet_aprom_readb addr=0x%08x val=0x%02x\n", addr, val); | |
70 | #endif | |
71 | return val; | |
72 | } | |
73 | ||
bd8d6f7c AK |
74 | static uint64_t pcnet_ioport_read(void *opaque, target_phys_addr_t addr, |
75 | unsigned size) | |
661a1799 | 76 | { |
bd8d6f7c | 77 | PCNetState *d = opaque; |
661a1799 | 78 | |
bd8d6f7c AK |
79 | if (addr < 16 && size == 1) { |
80 | return pcnet_aprom_readb(d, addr); | |
81 | } else if (addr >= 0x10 && addr < 0x20 && size == 2) { | |
82 | return pcnet_ioport_readw(d, addr); | |
83 | } else if (addr >= 0x10 && addr < 0x20 && size == 4) { | |
84 | return pcnet_ioport_readl(d, addr); | |
85 | } | |
86 | return ((uint64_t)1 << (size * 8)) - 1; | |
87 | } | |
661a1799 | 88 | |
bd8d6f7c AK |
89 | static void pcnet_ioport_write(void *opaque, target_phys_addr_t addr, |
90 | uint64_t data, unsigned size) | |
91 | { | |
92 | PCNetState *d = opaque; | |
661a1799 | 93 | |
bd8d6f7c AK |
94 | if (addr < 16 && size == 1) { |
95 | return pcnet_aprom_writeb(d, addr, data); | |
96 | } else if (addr >= 0x10 && addr < 0x20 && size == 2) { | |
97 | return pcnet_ioport_writew(d, addr, data); | |
98 | } else if (addr >= 0x10 && addr < 0x20 && size == 4) { | |
99 | return pcnet_ioport_writel(d, addr, data); | |
100 | } | |
661a1799 PB |
101 | } |
102 | ||
bd8d6f7c AK |
103 | static const MemoryRegionOps pcnet_io_ops = { |
104 | .read = pcnet_ioport_read, | |
105 | .write = pcnet_ioport_write, | |
106 | .endianness = DEVICE_NATIVE_ENDIAN, | |
107 | }; | |
108 | ||
661a1799 PB |
109 | static void pcnet_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
110 | { | |
111 | PCNetState *d = opaque; | |
112 | #ifdef PCNET_DEBUG_IO | |
113 | printf("pcnet_mmio_writeb addr=0x" TARGET_FMT_plx" val=0x%02x\n", addr, | |
114 | val); | |
115 | #endif | |
116 | if (!(addr & 0x10)) | |
117 | pcnet_aprom_writeb(d, addr & 0x0f, val); | |
118 | } | |
119 | ||
120 | static uint32_t pcnet_mmio_readb(void *opaque, target_phys_addr_t addr) | |
121 | { | |
122 | PCNetState *d = opaque; | |
123 | uint32_t val = -1; | |
124 | if (!(addr & 0x10)) | |
125 | val = pcnet_aprom_readb(d, addr & 0x0f); | |
126 | #ifdef PCNET_DEBUG_IO | |
127 | printf("pcnet_mmio_readb addr=0x" TARGET_FMT_plx " val=0x%02x\n", addr, | |
128 | val & 0xff); | |
129 | #endif | |
130 | return val; | |
131 | } | |
132 | ||
133 | static void pcnet_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val) | |
134 | { | |
135 | PCNetState *d = opaque; | |
136 | #ifdef PCNET_DEBUG_IO | |
137 | printf("pcnet_mmio_writew addr=0x" TARGET_FMT_plx " val=0x%04x\n", addr, | |
138 | val); | |
139 | #endif | |
140 | if (addr & 0x10) | |
141 | pcnet_ioport_writew(d, addr & 0x0f, val); | |
142 | else { | |
143 | addr &= 0x0f; | |
144 | pcnet_aprom_writeb(d, addr, val & 0xff); | |
145 | pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8); | |
146 | } | |
147 | } | |
148 | ||
149 | static uint32_t pcnet_mmio_readw(void *opaque, target_phys_addr_t addr) | |
150 | { | |
151 | PCNetState *d = opaque; | |
152 | uint32_t val = -1; | |
153 | if (addr & 0x10) | |
154 | val = pcnet_ioport_readw(d, addr & 0x0f); | |
155 | else { | |
156 | addr &= 0x0f; | |
157 | val = pcnet_aprom_readb(d, addr+1); | |
158 | val <<= 8; | |
159 | val |= pcnet_aprom_readb(d, addr); | |
160 | } | |
161 | #ifdef PCNET_DEBUG_IO | |
162 | printf("pcnet_mmio_readw addr=0x" TARGET_FMT_plx" val = 0x%04x\n", addr, | |
163 | val & 0xffff); | |
164 | #endif | |
165 | return val; | |
166 | } | |
167 | ||
168 | static void pcnet_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val) | |
169 | { | |
170 | PCNetState *d = opaque; | |
171 | #ifdef PCNET_DEBUG_IO | |
172 | printf("pcnet_mmio_writel addr=0x" TARGET_FMT_plx" val=0x%08x\n", addr, | |
173 | val); | |
174 | #endif | |
175 | if (addr & 0x10) | |
176 | pcnet_ioport_writel(d, addr & 0x0f, val); | |
177 | else { | |
178 | addr &= 0x0f; | |
179 | pcnet_aprom_writeb(d, addr, val & 0xff); | |
180 | pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8); | |
181 | pcnet_aprom_writeb(d, addr+2, (val & 0xff0000) >> 16); | |
182 | pcnet_aprom_writeb(d, addr+3, (val & 0xff000000) >> 24); | |
183 | } | |
184 | } | |
185 | ||
186 | static uint32_t pcnet_mmio_readl(void *opaque, target_phys_addr_t addr) | |
187 | { | |
188 | PCNetState *d = opaque; | |
189 | uint32_t val; | |
190 | if (addr & 0x10) | |
191 | val = pcnet_ioport_readl(d, addr & 0x0f); | |
192 | else { | |
193 | addr &= 0x0f; | |
194 | val = pcnet_aprom_readb(d, addr+3); | |
195 | val <<= 8; | |
196 | val |= pcnet_aprom_readb(d, addr+2); | |
197 | val <<= 8; | |
198 | val |= pcnet_aprom_readb(d, addr+1); | |
199 | val <<= 8; | |
200 | val |= pcnet_aprom_readb(d, addr); | |
201 | } | |
202 | #ifdef PCNET_DEBUG_IO | |
203 | printf("pcnet_mmio_readl addr=0x" TARGET_FMT_plx " val=0x%08x\n", addr, | |
204 | val); | |
205 | #endif | |
206 | return val; | |
207 | } | |
208 | ||
209 | static const VMStateDescription vmstate_pci_pcnet = { | |
210 | .name = "pcnet", | |
211 | .version_id = 3, | |
212 | .minimum_version_id = 2, | |
213 | .minimum_version_id_old = 2, | |
214 | .fields = (VMStateField []) { | |
215 | VMSTATE_PCI_DEVICE(pci_dev, PCIPCNetState), | |
216 | VMSTATE_STRUCT(state, PCIPCNetState, 0, vmstate_pcnet, PCNetState), | |
217 | VMSTATE_END_OF_LIST() | |
218 | } | |
219 | }; | |
220 | ||
221 | /* PCI interface */ | |
222 | ||
bd8d6f7c AK |
223 | static const MemoryRegionOps pcnet_mmio_ops = { |
224 | .old_mmio = { | |
225 | .read = { pcnet_mmio_readb, pcnet_mmio_readw, pcnet_mmio_readl }, | |
226 | .write = { pcnet_mmio_writeb, pcnet_mmio_writew, pcnet_mmio_writel }, | |
227 | }, | |
228 | .endianness = DEVICE_NATIVE_ENDIAN, | |
661a1799 PB |
229 | }; |
230 | ||
661a1799 PB |
231 | static void pci_physical_memory_write(void *dma_opaque, target_phys_addr_t addr, |
232 | uint8_t *buf, int len, int do_bswap) | |
233 | { | |
14fecf26 | 234 | pci_dma_write(dma_opaque, addr, buf, len); |
661a1799 PB |
235 | } |
236 | ||
237 | static void pci_physical_memory_read(void *dma_opaque, target_phys_addr_t addr, | |
238 | uint8_t *buf, int len, int do_bswap) | |
239 | { | |
14fecf26 | 240 | pci_dma_read(dma_opaque, addr, buf, len); |
661a1799 PB |
241 | } |
242 | ||
243 | static void pci_pcnet_cleanup(VLANClientState *nc) | |
244 | { | |
245 | PCNetState *d = DO_UPCAST(NICState, nc, nc)->opaque; | |
246 | ||
247 | pcnet_common_cleanup(d); | |
248 | } | |
249 | ||
250 | static int pci_pcnet_uninit(PCIDevice *dev) | |
251 | { | |
252 | PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev, dev); | |
253 | ||
bd8d6f7c AK |
254 | memory_region_destroy(&d->state.mmio); |
255 | memory_region_destroy(&d->io_bar); | |
661a1799 PB |
256 | qemu_del_timer(d->state.poll_timer); |
257 | qemu_free_timer(d->state.poll_timer); | |
258 | qemu_del_vlan_client(&d->state.nic->nc); | |
259 | return 0; | |
260 | } | |
261 | ||
262 | static NetClientInfo net_pci_pcnet_info = { | |
263 | .type = NET_CLIENT_TYPE_NIC, | |
264 | .size = sizeof(NICState), | |
265 | .can_receive = pcnet_can_receive, | |
266 | .receive = pcnet_receive, | |
267 | .cleanup = pci_pcnet_cleanup, | |
268 | }; | |
269 | ||
270 | static int pci_pcnet_init(PCIDevice *pci_dev) | |
271 | { | |
272 | PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev, pci_dev); | |
273 | PCNetState *s = &d->state; | |
274 | uint8_t *pci_conf; | |
275 | ||
276 | #if 0 | |
277 | printf("sizeof(RMD)=%d, sizeof(TMD)=%d\n", | |
278 | sizeof(struct pcnet_RMD), sizeof(struct pcnet_TMD)); | |
279 | #endif | |
280 | ||
281 | pci_conf = pci_dev->config; | |
282 | ||
661a1799 PB |
283 | pci_set_word(pci_conf + PCI_STATUS, |
284 | PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM); | |
661a1799 PB |
285 | |
286 | pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, 0x0); | |
287 | pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, 0x0); | |
288 | ||
817e0b6f | 289 | pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin A */ |
661a1799 PB |
290 | pci_conf[PCI_MIN_GNT] = 0x06; |
291 | pci_conf[PCI_MAX_LAT] = 0xff; | |
292 | ||
293 | /* Handler for memory-mapped I/O */ | |
145aebec | 294 | memory_region_init_io(&d->state.mmio, &pcnet_mmio_ops, s, "pcnet-mmio", |
bd8d6f7c | 295 | PCNET_PNPMMIO_SIZE); |
661a1799 | 296 | |
145aebec | 297 | memory_region_init_io(&d->io_bar, &pcnet_io_ops, s, "pcnet-io", |
bd8d6f7c | 298 | PCNET_IOPORT_SIZE); |
e824b2cc | 299 | pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->io_bar); |
661a1799 | 300 | |
e824b2cc | 301 | pci_register_bar(pci_dev, 1, 0, &s->mmio); |
661a1799 PB |
302 | |
303 | s->irq = pci_dev->irq[0]; | |
304 | s->phys_mem_read = pci_physical_memory_read; | |
305 | s->phys_mem_write = pci_physical_memory_write; | |
14fecf26 | 306 | s->dma_opaque = pci_dev; |
661a1799 PB |
307 | |
308 | if (!pci_dev->qdev.hotplugged) { | |
309 | static int loaded = 0; | |
310 | if (!loaded) { | |
5ee8ad71 | 311 | rom_add_option("pxe-pcnet.rom", -1); |
661a1799 PB |
312 | loaded = 1; |
313 | } | |
314 | } | |
315 | ||
316 | return pcnet_common_init(&pci_dev->qdev, s, &net_pci_pcnet_info); | |
317 | } | |
318 | ||
319 | static void pci_reset(DeviceState *dev) | |
320 | { | |
321 | PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev.qdev, dev); | |
322 | ||
323 | pcnet_h_reset(&d->state); | |
324 | } | |
325 | ||
326 | static PCIDeviceInfo pcnet_info = { | |
327 | .qdev.name = "pcnet", | |
328 | .qdev.size = sizeof(PCIPCNetState), | |
329 | .qdev.reset = pci_reset, | |
330 | .qdev.vmsd = &vmstate_pci_pcnet, | |
331 | .init = pci_pcnet_init, | |
332 | .exit = pci_pcnet_uninit, | |
d7dccd11 IY |
333 | .vendor_id = PCI_VENDOR_ID_AMD, |
334 | .device_id = PCI_DEVICE_ID_AMD_LANCE, | |
335 | .revision = 0x10, | |
336 | .class_id = PCI_CLASS_NETWORK_ETHERNET, | |
661a1799 PB |
337 | .qdev.props = (Property[]) { |
338 | DEFINE_NIC_PROPERTIES(PCIPCNetState, state.conf), | |
339 | DEFINE_PROP_END_OF_LIST(), | |
340 | } | |
341 | }; | |
342 | ||
343 | static void pci_pcnet_register_devices(void) | |
344 | { | |
345 | pci_qdev_register(&pcnet_info); | |
346 | } | |
347 | ||
348 | device_init(pci_pcnet_register_devices) |