--- /dev/null
+/*
+ * Dynamic device configuration and creation.
+ *
+ * Copyright (c) 2009 CodeSourcery
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
+ */
+
+/* The theory here is that it should be possible to create a machine without
+ knowledge of specific devices. Historically board init routines have
+ passed a bunch of arguments to each device, requiring the board know
+ exactly which device it is dealing with. This file provides an abstract
+ API for device configuration and initialization. Devices will generally
+ inherit from a particular bus (e.g. PCI or I2C) rather than
+ this API directly. */
+
+#include "net.h"
+#include "qdev.h"
+#include "sysemu.h"
+#include "monitor.h"
+
+struct DeviceProperty {
+ const char *name;
+ DevicePropType type;
+ union {
+ uint64_t i;
+ void *ptr;
+ } value;
+ DeviceProperty *next;
+};
+
+struct DeviceType {
+ const char *name;
+ DeviceInfo *info;
+ int size;
+ DeviceType *next;
+};
+
+/* This is a nasty hack to allow passing a NULL bus to qdev_create. */
+BusState *main_system_bus;
+
+static DeviceType *device_type_list;
+
+/* Register a new device type. */
+void qdev_register(const char *name, int size, DeviceInfo *info)
+{
+ DeviceType *t;
+
+ assert(size >= sizeof(DeviceState));
+
+ t = qemu_mallocz(sizeof(DeviceType));
+ t->next = device_type_list;
+ device_type_list = t;
+ t->name = qemu_strdup(name);
+ t->size = size;
+ t->info = info;
+}
+
+/* Create a new device. This only initializes the device state structure
+ and allows properties to be set. qdev_init should be called to
+ initialize the actual device emulation. */
+DeviceState *qdev_create(BusState *bus, const char *name)
+{
+ DeviceType *t;
+ DeviceState *dev;
+
+ for (t = device_type_list; t; t = t->next) {
+ if (strcmp(t->name, name) == 0) {
+ break;
+ }
+ }
+ if (!t) {
+ hw_error("Unknown device '%s'\n", name);
+ }
+
+ dev = qemu_mallocz(t->size);
+ dev->type = t;
+
+ if (!bus) {
+ /* ???: This assumes system busses have no additional state. */
+ if (!main_system_bus) {
+ main_system_bus = qbus_create(BUS_TYPE_SYSTEM, sizeof(BusState),
+ NULL, "main-system-bus");
+ }
+ bus = main_system_bus;
+ }
+ if (t->info->bus_type != bus->type) {
+ /* TODO: Print bus type names. */
+ hw_error("Device '%s' on wrong bus type (%d/%d)", name,
+ t->info->bus_type, bus->type);
+ }
+ dev->parent_bus = bus;
+ LIST_INSERT_HEAD(&bus->children, dev, sibling);
+ return dev;
+}
+
+/* Initialize a device. Device properties should be set before calling
+ this function. IRQs and MMIO regions should be connected/mapped after
+ calling this function. */
+void qdev_init(DeviceState *dev)
+{
+ dev->type->info->init(dev, dev->type->info);
+}
+
+/* Unlink device from bus and free the structure. */
+void qdev_free(DeviceState *dev)
+{
+ LIST_REMOVE(dev, sibling);
+ free(dev);
+}
+
+static DeviceProperty *create_prop(DeviceState *dev, const char *name,
+ DevicePropType type)
+{
+ DeviceProperty *prop;
+
+ /* TODO: Check for duplicate properties. */
+ prop = qemu_mallocz(sizeof(*prop));
+ prop->name = qemu_strdup(name);
+ prop->type = type;
+ prop->next = dev->props;
+ dev->props = prop;
+
+ return prop;
+}
+
+void qdev_set_prop_int(DeviceState *dev, const char *name, uint64_t value)
+{
+ DeviceProperty *prop;
+
+ prop = create_prop(dev, name, PROP_TYPE_INT);
+ prop->value.i = value;
+}
+
+void qdev_set_prop_dev(DeviceState *dev, const char *name, DeviceState *value)
+{
+ DeviceProperty *prop;
+
+ prop = create_prop(dev, name, PROP_TYPE_DEV);
+ prop->value.ptr = value;
+}
+
+void qdev_set_prop_ptr(DeviceState *dev, const char *name, void *value)
+{
+ DeviceProperty *prop;
+
+ prop = create_prop(dev, name, PROP_TYPE_PTR);
+ prop->value.ptr = value;
+}
+
+void qdev_set_netdev(DeviceState *dev, NICInfo *nd)
+{
+ assert(!dev->nd);
+ dev->nd = nd;
+}
+
+
+/* Get a character (serial) device interface. */
+CharDriverState *qdev_init_chardev(DeviceState *dev)
+{
+ static int next_serial;
+ static int next_virtconsole;
+ /* FIXME: This is a nasty hack that needs to go away. */
+ if (strncmp(dev->type->name, "virtio", 6) == 0) {
+ return virtcon_hds[next_virtconsole++];
+ } else {
+ return serial_hds[next_serial++];
+ }
+}
+
+BusState *qdev_get_parent_bus(DeviceState *dev)
+{
+ return dev->parent_bus;
+}
+
+static DeviceProperty *find_prop(DeviceState *dev, const char *name,
+ DevicePropType type)
+{
+ DeviceProperty *prop;
+
+ for (prop = dev->props; prop; prop = prop->next) {
+ if (strcmp(prop->name, name) == 0) {
+ assert (prop->type == type);
+ return prop;
+ }
+ }
+ return NULL;
+}
+
+uint64_t qdev_get_prop_int(DeviceState *dev, const char *name, uint64_t def)
+{
+ DeviceProperty *prop;
+
+ prop = find_prop(dev, name, PROP_TYPE_INT);
+ if (!prop) {
+ return def;
+ }
+
+ return prop->value.i;
+}
+
+void *qdev_get_prop_ptr(DeviceState *dev, const char *name)
+{
+ DeviceProperty *prop;
+
+ prop = find_prop(dev, name, PROP_TYPE_PTR);
+ assert(prop);
+ return prop->value.ptr;
+}
+
+DeviceState *qdev_get_prop_dev(DeviceState *dev, const char *name)
+{
+ DeviceProperty *prop;
+
+ prop = find_prop(dev, name, PROP_TYPE_DEV);
+ if (!prop) {
+ return NULL;
+ }
+ return prop->value.ptr;
+}
+
+void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n)
+{
+ assert(dev->num_gpio_in == 0);
+ dev->num_gpio_in = n;
+ dev->gpio_in = qemu_allocate_irqs(handler, dev, n);
+}
+
+void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n)
+{
+ assert(dev->num_gpio_out == 0);
+ dev->num_gpio_out = n;
+ dev->gpio_out = pins;
+}
+
+qemu_irq qdev_get_gpio_in(DeviceState *dev, int n)
+{
+ assert(n >= 0 && n < dev->num_gpio_in);
+ return dev->gpio_in[n];
+}
+
+void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin)
+{
+ assert(n >= 0 && n < dev->num_gpio_out);
+ dev->gpio_out[n] = pin;
+}
+
+VLANClientState *qdev_get_vlan_client(DeviceState *dev,
+ IOReadHandler *fd_read,
+ IOCanRWHandler *fd_can_read,
+ NetCleanup *cleanup,
+ void *opaque)
+{
+ NICInfo *nd = dev->nd;
+ assert(nd);
+ return qemu_new_vlan_client(nd->vlan, nd->model, nd->name,
+ fd_read, fd_can_read, cleanup, opaque);
+}
+
+
+void qdev_get_macaddr(DeviceState *dev, uint8_t *macaddr)
+{
+ memcpy(macaddr, dev->nd->macaddr, 6);
+}
+
+static int next_block_unit[IF_COUNT];
+
+/* Get a block device. This should only be used for single-drive devices
+ (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the
+ appropriate bus. */
+BlockDriverState *qdev_init_bdrv(DeviceState *dev, BlockInterfaceType type)
+{
+ int unit = next_block_unit[type]++;
+ int index;
+
+ index = drive_get_index(type, 0, unit);
+ if (index == -1) {
+ return NULL;
+ }
+ return drives_table[index].bdrv;
+}
+
+BusState *qdev_get_child_bus(DeviceState *dev, const char *name)
+{
+ BusState *bus;
+
+ LIST_FOREACH(bus, &dev->child_bus, sibling) {
+ if (strcmp(name, bus->name) == 0) {
+ return bus;
+ }
+ }
+ return NULL;
+}
+
+static int next_scsi_bus;
+
+/* Create a scsi bus, and attach devices to it. */
+/* TODO: Actually create a scsi bus for hotplug to use. */
+void scsi_bus_new(DeviceState *host, SCSIAttachFn attach)
+{
+ int bus = next_scsi_bus++;
+ int unit;
+ int index;
+
+ for (unit = 0; unit < MAX_SCSI_DEVS; unit++) {
+ index = drive_get_index(IF_SCSI, bus, unit);
+ if (index == -1) {
+ continue;
+ }
+ attach(host, drives_table[index].bdrv, unit);
+ }
+}
+
+BusState *qbus_create(BusType type, size_t size,
+ DeviceState *parent, const char *name)
+{
+ BusState *bus;
+
+ bus = qemu_mallocz(size);
+ bus->type = type;
+ bus->parent = parent;
+ bus->name = qemu_strdup(name);
+ LIST_INIT(&bus->children);
+ if (parent) {
+ LIST_INSERT_HEAD(&parent->child_bus, bus, sibling);
+ }
+ return bus;
+}
+
+static const char *bus_type_names[] = {
+ "System",
+ "PCI",
+ "SCSI",
+ "I2C",
+ "SSI"
+};
+
+#define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
+static void qbus_print(Monitor *mon, BusState *bus, int indent);
+
+static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
+{
+ DeviceProperty *prop;
+ BusState *child;
+ qdev_printf("dev: %s\n", dev->type->name);
+ indent += 2;
+ if (dev->num_gpio_in) {
+ qdev_printf("gpio-in %d\n", dev->num_gpio_in);
+ }
+ if (dev->num_gpio_out) {
+ qdev_printf("gpio-out %d\n", dev->num_gpio_out);
+ }
+ for (prop = dev->props; prop; prop = prop->next) {
+ switch (prop->type) {
+ case PROP_TYPE_INT:
+ qdev_printf("prop-int %s 0x%" PRIx64 "\n", prop->name,
+ prop->value.i);
+ break;
+ case PROP_TYPE_PTR:
+ qdev_printf("prop-ptr %s\n", prop->name);
+ break;
+ case PROP_TYPE_DEV:
+ qdev_printf("prop-dev %s %s\n", prop->name,
+ ((DeviceState *)prop->value.ptr)->type->name);
+ break;
+ default:
+ qdev_printf("prop-unknown%d %s\n", prop->type, prop->name);
+ break;
+ }
+ }
+ switch (dev->parent_bus->type) {
+ case BUS_TYPE_SYSTEM:
+ sysbus_dev_print(mon, dev, indent);
+ break;
+ default:
+ break;
+ }
+ LIST_FOREACH(child, &dev->child_bus, sibling) {
+ qbus_print(mon, child, indent);
+ }
+}
+
+static void qbus_print(Monitor *mon, BusState *bus, int indent)
+{
+ struct DeviceState *dev;
+
+ qdev_printf("bus: %s\n", bus->name);
+ indent += 2;
+ qdev_printf("type %s\n", bus_type_names[bus->type]);
+ LIST_FOREACH(dev, &bus->children, sibling) {
+ qdev_print(mon, dev, indent);
+ }
+}
+#undef qdev_printf
+
+void do_info_qtree(Monitor *mon)
+{
+ if (main_system_bus)
+ qbus_print(mon, main_system_bus, 0);
+}
projects / qemu / blobdiff