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 "hw/pci/pci.h" 31 #include "net/net.h" 32 #include "hw/loader.h" 33 #include "qemu/timer.h" 34 #include "sysemu/dma.h" 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; 50 MemoryRegion io_bar; 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 if (BCR_APROMWE(s)) { 60 s->prom[addr & 15] = val; 61 } 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 74 static uint64_t pcnet_ioport_read(void *opaque, hwaddr addr, 75 unsigned size) 76 { 77 PCNetState *d = opaque; 78 79 if (addr < 0x10) { 80 if (!BCR_DWIO(d) && size == 1) { 81 return pcnet_aprom_readb(d, addr); 82 } else if (!BCR_DWIO(d) && (addr & 1) == 0 && size == 2) { 83 return pcnet_aprom_readb(d, addr) | 84 (pcnet_aprom_readb(d, addr + 1) << 8); 85 } else if (BCR_DWIO(d) && (addr & 3) == 0 && size == 4) { 86 return pcnet_aprom_readb(d, addr) | 87 (pcnet_aprom_readb(d, addr + 1) << 8) | 88 (pcnet_aprom_readb(d, addr + 2) << 16) | 89 (pcnet_aprom_readb(d, addr + 3) << 24); 90 } 91 } else { 92 if (size == 2) { 93 return pcnet_ioport_readw(d, addr); 94 } else if (size == 4) { 95 return pcnet_ioport_readl(d, addr); 96 } 97 } 98 return ((uint64_t)1 << (size * 8)) - 1; 99 } 100 101 static void pcnet_ioport_write(void *opaque, hwaddr addr, 102 uint64_t data, unsigned size) 103 { 104 PCNetState *d = opaque; 105 106 if (addr < 0x10) { 107 if (!BCR_DWIO(d) && size == 1) { 108 pcnet_aprom_writeb(d, addr, data); 109 } else if (!BCR_DWIO(d) && (addr & 1) == 0 && size == 2) { 110 pcnet_aprom_writeb(d, addr, data & 0xff); 111 pcnet_aprom_writeb(d, addr + 1, data >> 8); 112 } else if (BCR_DWIO(d) && (addr & 3) == 0 && size == 4) { 113 pcnet_aprom_writeb(d, addr, data & 0xff); 114 pcnet_aprom_writeb(d, addr + 1, (data >> 8) & 0xff); 115 pcnet_aprom_writeb(d, addr + 2, (data >> 16) & 0xff); 116 pcnet_aprom_writeb(d, addr + 3, data >> 24); 117 } 118 } else { 119 if (size == 2) { 120 pcnet_ioport_writew(d, addr, data); 121 } else if (size == 4) { 122 pcnet_ioport_writel(d, addr, data); 123 } 124 } 125 } 126 127 static const MemoryRegionOps pcnet_io_ops = { 128 .read = pcnet_ioport_read, 129 .write = pcnet_ioport_write, 130 .endianness = DEVICE_NATIVE_ENDIAN, 131 }; 132 133 static void pcnet_mmio_writeb(void *opaque, hwaddr addr, uint32_t val) 134 { 135 PCNetState *d = opaque; 136 #ifdef PCNET_DEBUG_IO 137 printf("pcnet_mmio_writeb addr=0x" TARGET_FMT_plx" val=0x%02x\n", addr, 138 val); 139 #endif 140 if (!(addr & 0x10)) 141 pcnet_aprom_writeb(d, addr & 0x0f, val); 142 } 143 144 static uint32_t pcnet_mmio_readb(void *opaque, hwaddr addr) 145 { 146 PCNetState *d = opaque; 147 uint32_t val = -1; 148 if (!(addr & 0x10)) 149 val = pcnet_aprom_readb(d, addr & 0x0f); 150 #ifdef PCNET_DEBUG_IO 151 printf("pcnet_mmio_readb addr=0x" TARGET_FMT_plx " val=0x%02x\n", addr, 152 val & 0xff); 153 #endif 154 return val; 155 } 156 157 static void pcnet_mmio_writew(void *opaque, hwaddr addr, uint32_t val) 158 { 159 PCNetState *d = opaque; 160 #ifdef PCNET_DEBUG_IO 161 printf("pcnet_mmio_writew addr=0x" TARGET_FMT_plx " val=0x%04x\n", addr, 162 val); 163 #endif 164 if (addr & 0x10) 165 pcnet_ioport_writew(d, addr & 0x0f, val); 166 else { 167 addr &= 0x0f; 168 pcnet_aprom_writeb(d, addr, val & 0xff); 169 pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8); 170 } 171 } 172 173 static uint32_t pcnet_mmio_readw(void *opaque, hwaddr addr) 174 { 175 PCNetState *d = opaque; 176 uint32_t val = -1; 177 if (addr & 0x10) 178 val = pcnet_ioport_readw(d, addr & 0x0f); 179 else { 180 addr &= 0x0f; 181 val = pcnet_aprom_readb(d, addr+1); 182 val <<= 8; 183 val |= pcnet_aprom_readb(d, addr); 184 } 185 #ifdef PCNET_DEBUG_IO 186 printf("pcnet_mmio_readw addr=0x" TARGET_FMT_plx" val = 0x%04x\n", addr, 187 val & 0xffff); 188 #endif 189 return val; 190 } 191 192 static void pcnet_mmio_writel(void *opaque, hwaddr addr, uint32_t val) 193 { 194 PCNetState *d = opaque; 195 #ifdef PCNET_DEBUG_IO 196 printf("pcnet_mmio_writel addr=0x" TARGET_FMT_plx" val=0x%08x\n", addr, 197 val); 198 #endif 199 if (addr & 0x10) 200 pcnet_ioport_writel(d, addr & 0x0f, val); 201 else { 202 addr &= 0x0f; 203 pcnet_aprom_writeb(d, addr, val & 0xff); 204 pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8); 205 pcnet_aprom_writeb(d, addr+2, (val & 0xff0000) >> 16); 206 pcnet_aprom_writeb(d, addr+3, (val & 0xff000000) >> 24); 207 } 208 } 209 210 static uint32_t pcnet_mmio_readl(void *opaque, hwaddr addr) 211 { 212 PCNetState *d = opaque; 213 uint32_t val; 214 if (addr & 0x10) 215 val = pcnet_ioport_readl(d, addr & 0x0f); 216 else { 217 addr &= 0x0f; 218 val = pcnet_aprom_readb(d, addr+3); 219 val <<= 8; 220 val |= pcnet_aprom_readb(d, addr+2); 221 val <<= 8; 222 val |= pcnet_aprom_readb(d, addr+1); 223 val <<= 8; 224 val |= pcnet_aprom_readb(d, addr); 225 } 226 #ifdef PCNET_DEBUG_IO 227 printf("pcnet_mmio_readl addr=0x" TARGET_FMT_plx " val=0x%08x\n", addr, 228 val); 229 #endif 230 return val; 231 } 232 233 static const VMStateDescription vmstate_pci_pcnet = { 234 .name = "pcnet", 235 .version_id = 3, 236 .minimum_version_id = 2, 237 .minimum_version_id_old = 2, 238 .fields = (VMStateField []) { 239 VMSTATE_PCI_DEVICE(pci_dev, PCIPCNetState), 240 VMSTATE_STRUCT(state, PCIPCNetState, 0, vmstate_pcnet, PCNetState), 241 VMSTATE_END_OF_LIST() 242 } 243 }; 244 245 /* PCI interface */ 246 247 static const MemoryRegionOps pcnet_mmio_ops = { 248 .old_mmio = { 249 .read = { pcnet_mmio_readb, pcnet_mmio_readw, pcnet_mmio_readl }, 250 .write = { pcnet_mmio_writeb, pcnet_mmio_writew, pcnet_mmio_writel }, 251 }, 252 .endianness = DEVICE_NATIVE_ENDIAN, 253 }; 254 255 static void pci_physical_memory_write(void *dma_opaque, hwaddr addr, 256 uint8_t *buf, int len, int do_bswap) 257 { 258 pci_dma_write(dma_opaque, addr, buf, len); 259 } 260 261 static void pci_physical_memory_read(void *dma_opaque, hwaddr addr, 262 uint8_t *buf, int len, int do_bswap) 263 { 264 pci_dma_read(dma_opaque, addr, buf, len); 265 } 266 267 static void pci_pcnet_cleanup(NetClientState *nc) 268 { 269 PCNetState *d = qemu_get_nic_opaque(nc); 270 271 pcnet_common_cleanup(d); 272 } 273 274 static void pci_pcnet_uninit(PCIDevice *dev) 275 { 276 PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev, dev); 277 278 memory_region_destroy(&d->state.mmio); 279 memory_region_destroy(&d->io_bar); 280 qemu_del_timer(d->state.poll_timer); 281 qemu_free_timer(d->state.poll_timer); 282 qemu_del_nic(d->state.nic); 283 } 284 285 static NetClientInfo net_pci_pcnet_info = { 286 .type = NET_CLIENT_OPTIONS_KIND_NIC, 287 .size = sizeof(NICState), 288 .can_receive = pcnet_can_receive, 289 .receive = pcnet_receive, 290 .link_status_changed = pcnet_set_link_status, 291 .cleanup = pci_pcnet_cleanup, 292 }; 293 294 static int pci_pcnet_init(PCIDevice *pci_dev) 295 { 296 PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev, pci_dev); 297 PCNetState *s = &d->state; 298 uint8_t *pci_conf; 299 300 #if 0 301 printf("sizeof(RMD)=%d, sizeof(TMD)=%d\n", 302 sizeof(struct pcnet_RMD), sizeof(struct pcnet_TMD)); 303 #endif 304 305 pci_conf = pci_dev->config; 306 307 pci_set_word(pci_conf + PCI_STATUS, 308 PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM); 309 310 pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, 0x0); 311 pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, 0x0); 312 313 pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin A */ 314 pci_conf[PCI_MIN_GNT] = 0x06; 315 pci_conf[PCI_MAX_LAT] = 0xff; 316 317 /* Handler for memory-mapped I/O */ 318 memory_region_init_io(&d->state.mmio, &pcnet_mmio_ops, s, "pcnet-mmio", 319 PCNET_PNPMMIO_SIZE); 320 321 memory_region_init_io(&d->io_bar, &pcnet_io_ops, s, "pcnet-io", 322 PCNET_IOPORT_SIZE); 323 pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->io_bar); 324 325 pci_register_bar(pci_dev, 1, 0, &s->mmio); 326 327 s->irq = pci_dev->irq[0]; 328 s->phys_mem_read = pci_physical_memory_read; 329 s->phys_mem_write = pci_physical_memory_write; 330 s->dma_opaque = pci_dev; 331 332 return pcnet_common_init(&pci_dev->qdev, s, &net_pci_pcnet_info); 333 } 334 335 static void pci_reset(DeviceState *dev) 336 { 337 PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev.qdev, dev); 338 339 pcnet_h_reset(&d->state); 340 } 341 342 static Property pcnet_properties[] = { 343 DEFINE_NIC_PROPERTIES(PCIPCNetState, state.conf), 344 DEFINE_PROP_END_OF_LIST(), 345 }; 346 347 static void pcnet_class_init(ObjectClass *klass, void *data) 348 { 349 DeviceClass *dc = DEVICE_CLASS(klass); 350 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 351 352 k->init = pci_pcnet_init; 353 k->exit = pci_pcnet_uninit; 354 k->romfile = "efi-pcnet.rom", 355 k->vendor_id = PCI_VENDOR_ID_AMD; 356 k->device_id = PCI_DEVICE_ID_AMD_LANCE; 357 k->revision = 0x10; 358 k->class_id = PCI_CLASS_NETWORK_ETHERNET; 359 dc->reset = pci_reset; 360 dc->vmsd = &vmstate_pci_pcnet; 361 dc->props = pcnet_properties; 362 } 363 364 static const TypeInfo pcnet_info = { 365 .name = "pcnet", 366 .parent = TYPE_PCI_DEVICE, 367 .instance_size = sizeof(PCIPCNetState), 368 .class_init = pcnet_class_init, 369 }; 370 371 static void pci_pcnet_register_types(void) 372 { 373 type_register_static(&pcnet_info); 374 } 375 376 type_init(pci_pcnet_register_types) 377