Laurent Vivier | bfdec7f | 2017-11-03 20:38:02 +0100 | [diff] [blame] | 1 | /* |
| 2 | * qdev fw helpers |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, |
| 7 | * or (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | |
| 18 | #include "qemu/osdep.h" |
Laurent Vivier | bfdec7f | 2017-11-03 20:38:02 +0100 | [diff] [blame] | 19 | #include "hw/fw-path-provider.h" |
Markus Armbruster | a27bd6c | 2019-08-12 07:23:51 +0200 | [diff] [blame] | 20 | #include "hw/qdev-core.h" |
Laurent Vivier | bfdec7f | 2017-11-03 20:38:02 +0100 | [diff] [blame] | 21 | |
| 22 | const char *qdev_fw_name(DeviceState *dev) |
| 23 | { |
| 24 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
| 25 | |
| 26 | if (dc->fw_name) { |
| 27 | return dc->fw_name; |
| 28 | } |
| 29 | |
| 30 | return object_get_typename(OBJECT(dev)); |
| 31 | } |
| 32 | |
| 33 | static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev) |
| 34 | { |
| 35 | BusClass *bc = BUS_GET_CLASS(bus); |
| 36 | |
| 37 | if (bc->get_fw_dev_path) { |
| 38 | return bc->get_fw_dev_path(dev); |
| 39 | } |
| 40 | |
| 41 | return NULL; |
| 42 | } |
| 43 | |
| 44 | static char *qdev_get_fw_dev_path_from_handler(BusState *bus, DeviceState *dev) |
| 45 | { |
| 46 | Object *obj = OBJECT(dev); |
| 47 | char *d = NULL; |
| 48 | |
| 49 | while (!d && obj->parent) { |
| 50 | obj = obj->parent; |
| 51 | d = fw_path_provider_try_get_dev_path(obj, bus, dev); |
| 52 | } |
| 53 | return d; |
| 54 | } |
| 55 | |
| 56 | char *qdev_get_own_fw_dev_path_from_handler(BusState *bus, DeviceState *dev) |
| 57 | { |
| 58 | Object *obj = OBJECT(dev); |
| 59 | |
| 60 | return fw_path_provider_try_get_dev_path(obj, bus, dev); |
| 61 | } |
| 62 | |
| 63 | static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
| 64 | { |
| 65 | int l = 0; |
| 66 | |
| 67 | if (dev && dev->parent_bus) { |
| 68 | char *d; |
| 69 | l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); |
| 70 | d = qdev_get_fw_dev_path_from_handler(dev->parent_bus, dev); |
| 71 | if (!d) { |
| 72 | d = bus_get_fw_dev_path(dev->parent_bus, dev); |
| 73 | } |
| 74 | if (d) { |
| 75 | l += snprintf(p + l, size - l, "%s", d); |
| 76 | g_free(d); |
| 77 | } else { |
| 78 | return l; |
| 79 | } |
| 80 | } |
| 81 | l += snprintf(p + l , size - l, "/"); |
| 82 | |
| 83 | return l; |
| 84 | } |
| 85 | |
| 86 | char *qdev_get_fw_dev_path(DeviceState *dev) |
| 87 | { |
| 88 | char path[128]; |
| 89 | int l; |
| 90 | |
| 91 | l = qdev_get_fw_dev_path_helper(dev, path, 128); |
| 92 | |
| 93 | path[l - 1] = '\0'; |
| 94 | |
| 95 | return g_strdup(path); |
| 96 | } |