/* * QEMU Intel i82378 emulation (PCI to ISA bridge) * * Copyright (c) 2010-2011 Hervé Poussineau * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see . */ #include "pci.h" #include "pc.h" #include "i8254.h" #include "pcspk.h" //#define DEBUG_I82378 #ifdef DEBUG_I82378 #define DPRINTF(fmt, ...) \ do { fprintf(stderr, "i82378: " fmt , ## __VA_ARGS__); } while (0) #else #define DPRINTF(fmt, ...) \ do {} while (0) #endif #define BADF(fmt, ...) \ do { fprintf(stderr, "i82378 ERROR: " fmt , ## __VA_ARGS__); } while (0) typedef struct I82378State { qemu_irq out[2]; qemu_irq *i8259; MemoryRegion io; MemoryRegion mem; } I82378State; typedef struct PCIi82378State { PCIDevice pci_dev; uint32_t isa_io_base; uint32_t isa_mem_base; I82378State state; } PCIi82378State; static const VMStateDescription vmstate_pci_i82378 = { .name = "pci-i82378", .version_id = 0, .minimum_version_id = 0, .fields = (VMStateField[]) { VMSTATE_PCI_DEVICE(pci_dev, PCIi82378State), VMSTATE_END_OF_LIST() }, }; static void i82378_io_write(void *opaque, target_phys_addr_t addr, uint64_t value, unsigned int size) { switch (size) { case 1: DPRINTF("%s: " TARGET_FMT_plx "=%02" PRIx64 "\n", __func__, addr, value); cpu_outb(addr, value); break; case 2: DPRINTF("%s: " TARGET_FMT_plx "=%04" PRIx64 "\n", __func__, addr, value); cpu_outw(addr, value); break; case 4: DPRINTF("%s: " TARGET_FMT_plx "=%08" PRIx64 "\n", __func__, addr, value); cpu_outl(addr, value); break; default: abort(); } } static uint64_t i82378_io_read(void *opaque, target_phys_addr_t addr, unsigned int size) { DPRINTF("%s: " TARGET_FMT_plx "\n", __func__, addr); switch (size) { case 1: return cpu_inb(addr); case 2: return cpu_inw(addr); case 4: return cpu_inl(addr); default: abort(); } } static const MemoryRegionOps i82378_io_ops = { .read = i82378_io_read, .write = i82378_io_write, .endianness = DEVICE_LITTLE_ENDIAN, }; static void i82378_mem_write(void *opaque, target_phys_addr_t addr, uint64_t value, unsigned int size) { switch (size) { case 1: DPRINTF("%s: " TARGET_FMT_plx "=%02" PRIx64 "\n", __func__, addr, value); cpu_outb(addr, value); break; case 2: DPRINTF("%s: " TARGET_FMT_plx "=%04" PRIx64 "\n", __func__, addr, value); cpu_outw(addr, value); break; case 4: DPRINTF("%s: " TARGET_FMT_plx "=%08" PRIx64 "\n", __func__, addr, value); cpu_outl(addr, value); break; default: abort(); } } static uint64_t i82378_mem_read(void *opaque, target_phys_addr_t addr, unsigned int size) { DPRINTF("%s: " TARGET_FMT_plx "\n", __func__, addr); switch (size) { case 1: return cpu_inb(addr); case 2: return cpu_inw(addr); case 4: return cpu_inl(addr); default: abort(); } } static const MemoryRegionOps i82378_mem_ops = { .read = i82378_mem_read, .write = i82378_mem_write, .endianness = DEVICE_LITTLE_ENDIAN, }; static void i82378_request_out0_irq(void *opaque, int irq, int level) { I82378State *s = opaque; qemu_set_irq(s->out[0], level); } static void i82378_request_pic_irq(void *opaque, int irq, int level) { DeviceState *dev = opaque; PCIDevice *pci = DO_UPCAST(PCIDevice, qdev, dev); PCIi82378State *s = DO_UPCAST(PCIi82378State, pci_dev, pci); qemu_set_irq(s->state.i8259[irq], level); } static void i82378_init(DeviceState *dev, I82378State *s) { ISABus *isabus = DO_UPCAST(ISABus, qbus, qdev_get_child_bus(dev, "isa.0")); ISADevice *pit; qemu_irq *out0_irq; /* This device has: 2 82C59 (irq) 1 82C54 (pit) 2 82C37 (dma) NMI Utility Bus Support Registers All devices accept byte access only, except timer */ qdev_init_gpio_out(dev, s->out, 2); qdev_init_gpio_in(dev, i82378_request_pic_irq, 16); /* Workaround the fact that i8259 is not qdev'ified... */ out0_irq = qemu_allocate_irqs(i82378_request_out0_irq, s, 1); /* 2 82C59 (irq) */ s->i8259 = i8259_init(isabus, *out0_irq); isa_bus_irqs(isabus, s->i8259); /* 1 82C54 (pit) */ pit = pit_init(isabus, 0x40, 0, NULL); /* speaker */ pcspk_init(isabus, pit); /* 2 82C37 (dma) */ DMA_init(1, &s->out[1]); isa_create_simple(isabus, "i82374"); /* timer */ isa_create_simple(isabus, "mc146818rtc"); } static int pci_i82378_init(PCIDevice *dev) { PCIi82378State *pci = DO_UPCAST(PCIi82378State, pci_dev, dev); I82378State *s = &pci->state; uint8_t *pci_conf; pci_conf = dev->config; pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM); pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin 0 */ memory_region_init_io(&s->io, &i82378_io_ops, s, "i82378-io", 0x00010000); pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->io); memory_region_init_io(&s->mem, &i82378_mem_ops, s, "i82378-mem", 0x01000000); memory_region_set_coalescing(&s->mem); pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->mem); /* Make I/O address read only */ pci_set_word(dev->wmask + PCI_COMMAND, PCI_COMMAND_SPECIAL); pci_set_long(dev->wmask + PCI_BASE_ADDRESS_0, 0); pci_set_long(pci_conf + PCI_BASE_ADDRESS_0, pci->isa_io_base); isa_mem_base = pci->isa_mem_base; isa_bus_new(&dev->qdev, pci_address_space_io(dev)); i82378_init(&dev->qdev, s); return 0; } static Property i82378_properties[] = { DEFINE_PROP_HEX32("iobase", PCIi82378State, isa_io_base, 0x80000000), DEFINE_PROP_HEX32("membase", PCIi82378State, isa_mem_base, 0xc0000000), DEFINE_PROP_END_OF_LIST() }; static void pci_i82378_class_init(ObjectClass *klass, void *data) { PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); DeviceClass *dc = DEVICE_CLASS(klass); k->init = pci_i82378_init; k->vendor_id = PCI_VENDOR_ID_INTEL; k->device_id = PCI_DEVICE_ID_INTEL_82378; k->revision = 0x03; k->class_id = PCI_CLASS_BRIDGE_ISA; k->subsystem_vendor_id = 0x0; k->subsystem_id = 0x0; dc->vmsd = &vmstate_pci_i82378; dc->props = i82378_properties; } static TypeInfo pci_i82378_info = { .name = "i82378", .parent = TYPE_PCI_DEVICE, .instance_size = sizeof(PCIi82378State), .class_init = pci_i82378_class_init, }; static void i82378_register_types(void) { type_register_static(&pci_i82378_info); } type_init(i82378_register_types)