97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
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/*
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* qdev fw helpers
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "hw/qdev.h"
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#include "hw/fw-path-provider.h"
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const char *qdev_fw_name(DeviceState *dev)
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{
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DeviceClass *dc = DEVICE_GET_CLASS(dev);
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if (dc->fw_name) {
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return dc->fw_name;
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}
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return object_get_typename(OBJECT(dev));
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}
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static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev)
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{
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BusClass *bc = BUS_GET_CLASS(bus);
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if (bc->get_fw_dev_path) {
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return bc->get_fw_dev_path(dev);
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}
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return NULL;
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}
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static char *qdev_get_fw_dev_path_from_handler(BusState *bus, DeviceState *dev)
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{
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Object *obj = OBJECT(dev);
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char *d = NULL;
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while (!d && obj->parent) {
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obj = obj->parent;
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d = fw_path_provider_try_get_dev_path(obj, bus, dev);
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}
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return d;
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}
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char *qdev_get_own_fw_dev_path_from_handler(BusState *bus, DeviceState *dev)
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{
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Object *obj = OBJECT(dev);
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return fw_path_provider_try_get_dev_path(obj, bus, dev);
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}
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static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size)
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{
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int l = 0;
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if (dev && dev->parent_bus) {
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char *d;
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l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size);
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d = qdev_get_fw_dev_path_from_handler(dev->parent_bus, dev);
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if (!d) {
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d = bus_get_fw_dev_path(dev->parent_bus, dev);
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}
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if (d) {
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l += snprintf(p + l, size - l, "%s", d);
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g_free(d);
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} else {
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return l;
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}
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}
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l += snprintf(p + l , size - l, "/");
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return l;
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}
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char *qdev_get_fw_dev_path(DeviceState *dev)
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{
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char path[128];
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int l;
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l = qdev_get_fw_dev_path_helper(dev, path, 128);
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path[l - 1] = '\0';
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return g_strdup(path);
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}
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