2 * QEMU AMD PC-Net II (Am79C970A) PCI emulation
4 * Copyright (c) 2004 Antony T Curtis
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
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
30 #include "hw/pci/pci.h"
32 #include "hw/loader.h"
33 #include "qemu/timer.h"
34 #include "sysemu/dma.h"
35 #include "sysemu/sysemu.h"
40 //#define PCNET_DEBUG_IO
41 //#define PCNET_DEBUG_BCR
42 //#define PCNET_DEBUG_CSR
43 //#define PCNET_DEBUG_RMD
44 //#define PCNET_DEBUG_TMD
45 //#define PCNET_DEBUG_MATCH
47 #define TYPE_PCI_PCNET "pcnet"
49 #define PCI_PCNET(obj) \
50 OBJECT_CHECK(PCIPCNetState, (obj), TYPE_PCI_PCNET)
61 static void pcnet_aprom_writeb(void *opaque, uint32_t addr, uint32_t val)
63 PCNetState *s = opaque;
65 printf("pcnet_aprom_writeb addr=0x%08x val=0x%02x\n", addr, val);
68 s->prom[addr & 15] = val;
72 static uint32_t pcnet_aprom_readb(void *opaque, uint32_t addr)
74 PCNetState *s = opaque;
75 uint32_t val = s->prom[addr & 15];
77 printf("pcnet_aprom_readb addr=0x%08x val=0x%02x\n", addr, val);
82 static uint64_t pcnet_ioport_read(void *opaque, hwaddr addr,
85 PCNetState *d = opaque;
88 if (!BCR_DWIO(d) && size == 1) {
89 return pcnet_aprom_readb(d, addr);
90 } else if (!BCR_DWIO(d) && (addr & 1) == 0 && size == 2) {
91 return pcnet_aprom_readb(d, addr) |
92 (pcnet_aprom_readb(d, addr + 1) << 8);
93 } else if (BCR_DWIO(d) && (addr & 3) == 0 && size == 4) {
94 return pcnet_aprom_readb(d, addr) |
95 (pcnet_aprom_readb(d, addr + 1) << 8) |
96 (pcnet_aprom_readb(d, addr + 2) << 16) |
97 (pcnet_aprom_readb(d, addr + 3) << 24);
101 return pcnet_ioport_readw(d, addr);
102 } else if (size == 4) {
103 return pcnet_ioport_readl(d, addr);
106 return ((uint64_t)1 << (size * 8)) - 1;
109 static void pcnet_ioport_write(void *opaque, hwaddr addr,
110 uint64_t data, unsigned size)
112 PCNetState *d = opaque;
115 if (!BCR_DWIO(d) && size == 1) {
116 pcnet_aprom_writeb(d, addr, data);
117 } else if (!BCR_DWIO(d) && (addr & 1) == 0 && size == 2) {
118 pcnet_aprom_writeb(d, addr, data & 0xff);
119 pcnet_aprom_writeb(d, addr + 1, data >> 8);
120 } else if (BCR_DWIO(d) && (addr & 3) == 0 && size == 4) {
121 pcnet_aprom_writeb(d, addr, data & 0xff);
122 pcnet_aprom_writeb(d, addr + 1, (data >> 8) & 0xff);
123 pcnet_aprom_writeb(d, addr + 2, (data >> 16) & 0xff);
124 pcnet_aprom_writeb(d, addr + 3, data >> 24);
128 pcnet_ioport_writew(d, addr, data);
129 } else if (size == 4) {
130 pcnet_ioport_writel(d, addr, data);
135 static const MemoryRegionOps pcnet_io_ops = {
136 .read = pcnet_ioport_read,
137 .write = pcnet_ioport_write,
138 .endianness = DEVICE_LITTLE_ENDIAN,
141 static void pcnet_mmio_writeb(void *opaque, hwaddr addr, uint32_t val)
143 PCNetState *d = opaque;
144 #ifdef PCNET_DEBUG_IO
145 printf("pcnet_mmio_writeb addr=0x" TARGET_FMT_plx" val=0x%02x\n", addr,
149 pcnet_aprom_writeb(d, addr & 0x0f, val);
152 static uint32_t pcnet_mmio_readb(void *opaque, hwaddr addr)
154 PCNetState *d = opaque;
157 val = pcnet_aprom_readb(d, addr & 0x0f);
158 #ifdef PCNET_DEBUG_IO
159 printf("pcnet_mmio_readb addr=0x" TARGET_FMT_plx " val=0x%02x\n", addr,
165 static void pcnet_mmio_writew(void *opaque, hwaddr addr, uint32_t val)
167 PCNetState *d = opaque;
168 #ifdef PCNET_DEBUG_IO
169 printf("pcnet_mmio_writew addr=0x" TARGET_FMT_plx " val=0x%04x\n", addr,
173 pcnet_ioport_writew(d, addr & 0x0f, val);
176 pcnet_aprom_writeb(d, addr, val & 0xff);
177 pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8);
181 static uint32_t pcnet_mmio_readw(void *opaque, hwaddr addr)
183 PCNetState *d = opaque;
186 val = pcnet_ioport_readw(d, addr & 0x0f);
189 val = pcnet_aprom_readb(d, addr+1);
191 val |= pcnet_aprom_readb(d, addr);
193 #ifdef PCNET_DEBUG_IO
194 printf("pcnet_mmio_readw addr=0x" TARGET_FMT_plx" val = 0x%04x\n", addr,
200 static void pcnet_mmio_writel(void *opaque, hwaddr addr, uint32_t val)
202 PCNetState *d = opaque;
203 #ifdef PCNET_DEBUG_IO
204 printf("pcnet_mmio_writel addr=0x" TARGET_FMT_plx" val=0x%08x\n", addr,
208 pcnet_ioport_writel(d, addr & 0x0f, val);
211 pcnet_aprom_writeb(d, addr, val & 0xff);
212 pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8);
213 pcnet_aprom_writeb(d, addr+2, (val & 0xff0000) >> 16);
214 pcnet_aprom_writeb(d, addr+3, (val & 0xff000000) >> 24);
218 static uint32_t pcnet_mmio_readl(void *opaque, hwaddr addr)
220 PCNetState *d = opaque;
223 val = pcnet_ioport_readl(d, addr & 0x0f);
226 val = pcnet_aprom_readb(d, addr+3);
228 val |= pcnet_aprom_readb(d, addr+2);
230 val |= pcnet_aprom_readb(d, addr+1);
232 val |= pcnet_aprom_readb(d, addr);
234 #ifdef PCNET_DEBUG_IO
235 printf("pcnet_mmio_readl addr=0x" TARGET_FMT_plx " val=0x%08x\n", addr,
241 static const VMStateDescription vmstate_pci_pcnet = {
244 .minimum_version_id = 2,
245 .fields = (VMStateField[]) {
246 VMSTATE_PCI_DEVICE(parent_obj, PCIPCNetState),
247 VMSTATE_STRUCT(state, PCIPCNetState, 0, vmstate_pcnet, PCNetState),
248 VMSTATE_END_OF_LIST()
254 static const MemoryRegionOps pcnet_mmio_ops = {
256 .read = { pcnet_mmio_readb, pcnet_mmio_readw, pcnet_mmio_readl },
257 .write = { pcnet_mmio_writeb, pcnet_mmio_writew, pcnet_mmio_writel },
259 .endianness = DEVICE_LITTLE_ENDIAN,
262 static void pci_physical_memory_write(void *dma_opaque, hwaddr addr,
263 uint8_t *buf, int len, int do_bswap)
265 pci_dma_write(dma_opaque, addr, buf, len);
268 static void pci_physical_memory_read(void *dma_opaque, hwaddr addr,
269 uint8_t *buf, int len, int do_bswap)
271 pci_dma_read(dma_opaque, addr, buf, len);
274 static void pci_pcnet_uninit(PCIDevice *dev)
276 PCIPCNetState *d = PCI_PCNET(dev);
278 qemu_free_irq(d->state.irq);
279 timer_del(d->state.poll_timer);
280 timer_free(d->state.poll_timer);
281 qemu_del_nic(d->state.nic);
284 static NetClientInfo net_pci_pcnet_info = {
285 .type = NET_CLIENT_OPTIONS_KIND_NIC,
286 .size = sizeof(NICState),
287 .can_receive = pcnet_can_receive,
288 .receive = pcnet_receive,
289 .link_status_changed = pcnet_set_link_status,
292 static int pci_pcnet_init(PCIDevice *pci_dev)
294 PCIPCNetState *d = PCI_PCNET(pci_dev);
295 PCNetState *s = &d->state;
299 printf("sizeof(RMD)=%d, sizeof(TMD)=%d\n",
300 sizeof(struct pcnet_RMD), sizeof(struct pcnet_TMD));
303 pci_conf = pci_dev->config;
305 pci_set_word(pci_conf + PCI_STATUS,
306 PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM);
308 pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, 0x0);
309 pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, 0x0);
311 pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin A */
312 pci_conf[PCI_MIN_GNT] = 0x06;
313 pci_conf[PCI_MAX_LAT] = 0xff;
315 /* Handler for memory-mapped I/O */
316 memory_region_init_io(&d->state.mmio, OBJECT(d), &pcnet_mmio_ops, s,
317 "pcnet-mmio", PCNET_PNPMMIO_SIZE);
319 memory_region_init_io(&d->io_bar, OBJECT(d), &pcnet_io_ops, s, "pcnet-io",
321 pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->io_bar);
323 pci_register_bar(pci_dev, 1, 0, &s->mmio);
325 s->irq = pci_allocate_irq(pci_dev);
326 s->phys_mem_read = pci_physical_memory_read;
327 s->phys_mem_write = pci_physical_memory_write;
328 s->dma_opaque = pci_dev;
330 return pcnet_common_init(DEVICE(pci_dev), s, &net_pci_pcnet_info);
333 static void pci_reset(DeviceState *dev)
335 PCIPCNetState *d = PCI_PCNET(dev);
337 pcnet_h_reset(&d->state);
340 static void pcnet_instance_init(Object *obj)
342 PCIPCNetState *d = PCI_PCNET(obj);
343 PCNetState *s = &d->state;
345 device_add_bootindex_property(obj, &s->conf.bootindex,
346 "bootindex", "/ethernet-phy@0",
350 static Property pcnet_properties[] = {
351 DEFINE_NIC_PROPERTIES(PCIPCNetState, state.conf),
352 DEFINE_PROP_END_OF_LIST(),
355 static void pcnet_class_init(ObjectClass *klass, void *data)
357 DeviceClass *dc = DEVICE_CLASS(klass);
358 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
360 k->init = pci_pcnet_init;
361 k->exit = pci_pcnet_uninit;
362 k->romfile = "efi-pcnet.rom",
363 k->vendor_id = PCI_VENDOR_ID_AMD;
364 k->device_id = PCI_DEVICE_ID_AMD_LANCE;
366 k->class_id = PCI_CLASS_NETWORK_ETHERNET;
367 dc->reset = pci_reset;
368 dc->vmsd = &vmstate_pci_pcnet;
369 dc->props = pcnet_properties;
370 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
373 static const TypeInfo pcnet_info = {
374 .name = TYPE_PCI_PCNET,
375 .parent = TYPE_PCI_DEVICE,
376 .instance_size = sizeof(PCIPCNetState),
377 .class_init = pcnet_class_init,
378 .instance_init = pcnet_instance_init,
381 static void pci_pcnet_register_types(void)
383 type_register_static(&pcnet_info);
386 type_init(pci_pcnet_register_types)