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-rw-r--r--hw/isa/i82378.c277
1 files changed, 277 insertions, 0 deletions
diff --git a/hw/isa/i82378.c b/hw/isa/i82378.c
new file mode 100644
index 0000000000..cced9aff26
--- /dev/null
+++ b/hw/isa/i82378.c
@@ -0,0 +1,277 @@
+/*
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include "hw/pci/pci.h"
+#include "hw/i386/pc.h"
+#include "hw/timer/i8254.h"
+#include "hw/audio/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, hwaddr 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, hwaddr 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, hwaddr 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, hwaddr 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;
+ ISADevice *isa;
+ 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) */
+ isa = isa_create_simple(isabus, "i82374");
+ qdev_connect_gpio_out(&isa->qdev, 0, s->out[1]);
+
+ /* 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);
+ 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 const 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)
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