/* * QEMU AMD PC-Net II (Am79C970A) PCI emulation * * Copyright (c) 2004 Antony T Curtis * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ /* This software was written to be compatible with the specification: * AMD Am79C970A PCnet-PCI II Ethernet Controller Data-Sheet * AMD Publication# 19436 Rev:E Amendment/0 Issue Date: June 2000 */ #include "qemu/osdep.h" #include "hw/irq.h" #include "hw/pci/pci_device.h" #include "hw/qdev-properties.h" #include "migration/vmstate.h" #include "net/net.h" #include "qemu/module.h" #include "qemu/timer.h" #include "sysemu/dma.h" #include "sysemu/sysemu.h" #include "trace.h" #include "pcnet.h" #include "qom/object.h" //#define PCNET_DEBUG //#define PCNET_DEBUG_IO //#define PCNET_DEBUG_BCR //#define PCNET_DEBUG_CSR //#define PCNET_DEBUG_RMD //#define PCNET_DEBUG_TMD //#define PCNET_DEBUG_MATCH #define TYPE_PCI_PCNET "pcnet" OBJECT_DECLARE_SIMPLE_TYPE(PCIPCNetState, PCI_PCNET) struct PCIPCNetState { /*< private >*/ PCIDevice parent_obj; /*< public >*/ PCNetState state; MemoryRegion io_bar; }; static void pcnet_aprom_writeb(void *opaque, uint32_t addr, uint32_t val) { PCNetState *s = opaque; trace_pcnet_aprom_writeb(opaque, addr, val); if (BCR_APROMWE(s)) { s->prom[addr & 15] = val; } } static uint32_t pcnet_aprom_readb(void *opaque, uint32_t addr) { PCNetState *s = opaque; uint32_t val = s->prom[addr & 15]; trace_pcnet_aprom_readb(opaque, addr, val); return val; } static uint64_t pcnet_ioport_read(void *opaque, hwaddr addr, unsigned size) { PCNetState *d = opaque; trace_pcnet_ioport_read(opaque, addr, size); if (addr < 0x10) { if (!BCR_DWIO(d) && size == 1) { return pcnet_aprom_readb(d, addr); } else if (!BCR_DWIO(d) && (addr & 1) == 0 && size == 2) { return pcnet_aprom_readb(d, addr) | (pcnet_aprom_readb(d, addr + 1) << 8); } else if (BCR_DWIO(d) && (addr & 3) == 0 && size == 4) { return pcnet_aprom_readb(d, addr) | (pcnet_aprom_readb(d, addr + 1) << 8) | (pcnet_aprom_readb(d, addr + 2) << 16) | (pcnet_aprom_readb(d, addr + 3) << 24); } } else { if (size == 2) { return pcnet_ioport_readw(d, addr); } else if (size == 4) { return pcnet_ioport_readl(d, addr); } } return ((uint64_t)1 << (size * 8)) - 1; } static void pcnet_ioport_write(void *opaque, hwaddr addr, uint64_t data, unsigned size) { PCNetState *d = opaque; trace_pcnet_ioport_write(opaque, addr, data, size); if (addr < 0x10) { if (!BCR_DWIO(d) && size == 1) { pcnet_aprom_writeb(d, addr, data); } else if (!BCR_DWIO(d) && (addr & 1) == 0 && size == 2) { pcnet_aprom_writeb(d, addr, data & 0xff); pcnet_aprom_writeb(d, addr + 1, data >> 8); } else if (BCR_DWIO(d) && (addr & 3) == 0 && size == 4) { pcnet_aprom_writeb(d, addr, data & 0xff); pcnet_aprom_writeb(d, addr + 1, (data >> 8) & 0xff); pcnet_aprom_writeb(d, addr + 2, (data >> 16) & 0xff); pcnet_aprom_writeb(d, addr + 3, data >> 24); } } else { if (size == 2) { pcnet_ioport_writew(d, addr, data); } else if (size == 4) { pcnet_ioport_writel(d, addr, data); } } } static const MemoryRegionOps pcnet_io_ops = { .read = pcnet_ioport_read, .write = pcnet_ioport_write, .endianness = DEVICE_LITTLE_ENDIAN, }; static const VMStateDescription vmstate_pci_pcnet = { .name = "pcnet", .version_id = 3, .minimum_version_id = 2, .fields = (const VMStateField[]) { VMSTATE_PCI_DEVICE(parent_obj, PCIPCNetState), VMSTATE_STRUCT(state, PCIPCNetState, 0, vmstate_pcnet, PCNetState), VMSTATE_END_OF_LIST() } }; /* PCI interface */ static const MemoryRegionOps pcnet_mmio_ops = { .read = pcnet_ioport_read, .write = pcnet_ioport_write, .valid.min_access_size = 1, .valid.max_access_size = 4, .impl.min_access_size = 1, .impl.max_access_size = 4, .endianness = DEVICE_LITTLE_ENDIAN, }; static void pci_physical_memory_write(void *dma_opaque, hwaddr addr, uint8_t *buf, int len, int do_bswap) { pci_dma_write(dma_opaque, addr, buf, len); } static void pci_physical_memory_read(void *dma_opaque, hwaddr addr, uint8_t *buf, int len, int do_bswap) { pci_dma_read(dma_opaque, addr, buf, len); } static void pci_pcnet_uninit(PCIDevice *dev) { PCIPCNetState *d = PCI_PCNET(dev); qemu_free_irq(d->state.irq); timer_free(d->state.poll_timer); qemu_del_nic(d->state.nic); } static NetClientInfo net_pci_pcnet_info = { .type = NET_CLIENT_DRIVER_NIC, .size = sizeof(NICState), .receive = pcnet_receive, .link_status_changed = pcnet_set_link_status, }; static void pci_pcnet_realize(PCIDevice *pci_dev, Error **errp) { PCIPCNetState *d = PCI_PCNET(pci_dev); PCNetState *s = &d->state; uint8_t *pci_conf; #if 0 printf("sizeof(RMD)=%d, sizeof(TMD)=%d\n", sizeof(struct pcnet_RMD), sizeof(struct pcnet_TMD)); #endif pci_conf = pci_dev->config; pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM); pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, 0x0); pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, 0x0); pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin A */ pci_conf[PCI_MIN_GNT] = 0x06; pci_conf[PCI_MAX_LAT] = 0xff; /* Handler for memory-mapped I/O */ memory_region_init_io(&d->state.mmio, OBJECT(d), &pcnet_mmio_ops, s, "pcnet-mmio", PCNET_PNPMMIO_SIZE); memory_region_init_io(&d->io_bar, OBJECT(d), &pcnet_io_ops, s, "pcnet-io", PCNET_IOPORT_SIZE); pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->io_bar); pci_register_bar(pci_dev, 1, 0, &s->mmio); s->irq = pci_allocate_irq(pci_dev); s->phys_mem_read = pci_physical_memory_read; s->phys_mem_write = pci_physical_memory_write; s->dma_opaque = DEVICE(pci_dev); pcnet_common_init(DEVICE(pci_dev), s, &net_pci_pcnet_info); } static void pci_reset(DeviceState *dev) { PCIPCNetState *d = PCI_PCNET(dev); pcnet_h_reset(&d->state); } static void pcnet_instance_init(Object *obj) { PCIPCNetState *d = PCI_PCNET(obj); PCNetState *s = &d->state; device_add_bootindex_property(obj, &s->conf.bootindex, "bootindex", "/ethernet-phy@0", DEVICE(obj)); } static Property pcnet_properties[] = { DEFINE_NIC_PROPERTIES(PCIPCNetState, state.conf), DEFINE_PROP_END_OF_LIST(), }; static void pcnet_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); k->realize = pci_pcnet_realize; k->exit = pci_pcnet_uninit; k->romfile = "efi-pcnet.rom", k->vendor_id = PCI_VENDOR_ID_AMD; k->device_id = PCI_DEVICE_ID_AMD_LANCE; k->revision = 0x10; k->class_id = PCI_CLASS_NETWORK_ETHERNET; device_class_set_legacy_reset(dc, pci_reset); dc->vmsd = &vmstate_pci_pcnet; device_class_set_props(dc, pcnet_properties); set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); } static const TypeInfo pcnet_info = { .name = TYPE_PCI_PCNET, .parent = TYPE_PCI_DEVICE, .instance_size = sizeof(PCIPCNetState), .class_init = pcnet_class_init, .instance_init = pcnet_instance_init, .interfaces = (InterfaceInfo[]) { { INTERFACE_CONVENTIONAL_PCI_DEVICE }, { }, }, }; static void pci_pcnet_register_types(void) { type_register_static(&pcnet_info); } type_init(pci_pcnet_register_types)