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Annotation of qemu/hw/ide/qdev.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * ide bus support for qdev.
                      3:  *
                      4:  * Copyright (c) 2009 Gerd Hoffmann <[email protected]>
                      5:  *
                      6:  * This library is free software; you can redistribute it and/or
                      7:  * modify it under the terms of the GNU Lesser General Public
                      8:  * License as published by the Free Software Foundation; either
                      9:  * version 2 of the License, or (at your option) any later version.
                     10:  *
                     11:  * This library is distributed in the hope that it will be useful,
                     12:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
                     13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     14:  * Lesser General Public License for more details.
                     15:  *
                     16:  * You should have received a copy of the GNU Lesser General Public
                     17:  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
                     18:  */
                     19: #include <hw/hw.h>
                     20: #include "sysemu.h"
                     21: #include "dma.h"
                     22: 
                     23: #include <hw/ide/internal.h>
                     24: 
                     25: /* --------------------------------- */
                     26: 
                     27: static struct BusInfo ide_bus_info = {
                     28:     .name  = "IDE",
                     29:     .size  = sizeof(IDEBus),
                     30: };
                     31: 
                     32: void ide_bus_new(IDEBus *idebus, DeviceState *dev)
                     33: {
                     34:     qbus_create_inplace(&idebus->qbus, &ide_bus_info, dev, NULL);
                     35: }
                     36: 
                     37: static int ide_qdev_init(DeviceState *qdev, DeviceInfo *base)
                     38: {
                     39:     IDEDevice *dev = DO_UPCAST(IDEDevice, qdev, qdev);
                     40:     IDEDeviceInfo *info = DO_UPCAST(IDEDeviceInfo, qdev, base);
                     41:     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
                     42: 
                     43:     if (!dev->dinfo) {
                     44:         fprintf(stderr, "%s: no drive specified\n", qdev->info->name);
                     45:         goto err;
                     46:     }
                     47:     if (dev->unit == -1) {
                     48:         dev->unit = bus->master ? 1 : 0;
                     49:     }
                     50:     switch (dev->unit) {
                     51:     case 0:
                     52:         if (bus->master) {
                     53:             fprintf(stderr, "ide: tried to assign master twice\n");
                     54:             goto err;
                     55:         }
                     56:         bus->master = dev;
                     57:         break;
                     58:     case 1:
                     59:         if (bus->slave) {
                     60:             fprintf(stderr, "ide: tried to assign slave twice\n");
                     61:             goto err;
                     62:         }
                     63:         bus->slave = dev;
                     64:         break;
                     65:     default:
                     66:         goto err;
                     67:     }
                     68:     return info->init(dev);
                     69: 
                     70: err:
                     71:     return -1;
                     72: }
                     73: 
                     74: static void ide_qdev_register(IDEDeviceInfo *info)
                     75: {
                     76:     info->qdev.init = ide_qdev_init;
                     77:     info->qdev.bus_info = &ide_bus_info;
                     78:     qdev_register(&info->qdev);
                     79: }
                     80: 
                     81: IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
                     82: {
                     83:     DeviceState *dev;
                     84: 
                     85:     dev = qdev_create(&bus->qbus, "ide-drive");
                     86:     qdev_prop_set_uint32(dev, "unit", unit);
                     87:     qdev_prop_set_drive(dev, "drive", drive);
                     88:     if (qdev_init(dev) < 0)
                     89:         return NULL;
                     90:     return DO_UPCAST(IDEDevice, qdev, dev);
                     91: }
                     92: 
                     93: /* --------------------------------- */
                     94: 
                     95: typedef struct IDEDrive {
                     96:     IDEDevice dev;
                     97: } IDEDrive;
                     98: 
                     99: static int ide_drive_initfn(IDEDevice *dev)
                    100: {
                    101:     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
                    102:     ide_init_drive(bus->ifs + dev->unit, dev->dinfo);
                    103:     return 0;
                    104: }
                    105: 
                    106: static IDEDeviceInfo ide_drive_info = {
                    107:     .qdev.name  = "ide-drive",
                    108:     .qdev.size  = sizeof(IDEDrive),
                    109:     .init       = ide_drive_initfn,
                    110:     .qdev.props = (Property[]) {
                    111:         DEFINE_PROP_UINT32("unit", IDEDrive, dev.unit, -1),
                    112:         DEFINE_PROP_DRIVE("drive", IDEDrive, dev.dinfo),
                    113:         DEFINE_PROP_END_OF_LIST(),
                    114:     }
                    115: };
                    116: 
                    117: static void ide_drive_register(void)
                    118: {
                    119:     ide_qdev_register(&ide_drive_info);
                    120: }
                    121: device_init(ide_drive_register);

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