There are QEMUMachines that have neither IF_IDE nor IF_SCSI as a default/standard interface to their block devices / drives. Therefore, this patch introduces a new field default_block_type per QEMUMachine struct. The prior use_scsi field becomes thereby obsolete and is replaced through .default_block_type = IF_SCSI. This patch also changes the default for s390x to IF_VIRTIO and removes an early hack that converts IF_IDE drives. Other parties have already claimed interest (e.g. IF_SD for exynos) To create a sane default, for machines that dont specify a default_block_type, this patch makes IF_IDE = 0 and IF_NONE = 1. I checked all users of IF_NONE (blockdev.c and ww/device-hotplug.c) as well as IF_IDE and it seems that it is ok to change the defines - in other words, I found no obvious (to me) assumption in the code regarding IF_NONE==0. IF_NONE is only set if there is an explicit if=none. Without if=* the interface becomes IF_DEFAULT. I would suggest to have some additional care, e.g. by letting this patch sit some days in the block tree. Based on an initial patch from Einar Lueck <elelueck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> CC: Igor Mitsyanko <i.mitsyanko@samsung.com> CC: Markus Armbruster <armbru@redhat.com> CC: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alexander Graf <agraf@suse.de> Acked-by: Igor Mitsyanko <i.mitsyanko@samsung.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/*
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* QEMU device hotplug helpers
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*
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* Copyright (c) 2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h"
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#include "boards.h"
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#include "net.h"
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#include "blockdev.h"
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#include "qemu-config.h"
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#include "sysemu.h"
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#include "monitor.h"
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DriveInfo *add_init_drive(const char *optstr)
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{
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DriveInfo *dinfo;
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QemuOpts *opts;
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opts = drive_def(optstr);
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if (!opts)
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return NULL;
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dinfo = drive_init(opts, current_machine->block_default_type);
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if (!dinfo) {
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qemu_opts_del(opts);
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return NULL;
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}
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return dinfo;
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}
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#if !defined(TARGET_I386)
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int pci_drive_hot_add(Monitor *mon, const QDict *qdict, DriveInfo *dinfo)
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{
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/* On non-x86 we don't do PCI hotplug */
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monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
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return -1;
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}
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#endif
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void drive_hot_add(Monitor *mon, const QDict *qdict)
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{
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DriveInfo *dinfo = NULL;
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const char *opts = qdict_get_str(qdict, "opts");
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dinfo = add_init_drive(opts);
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if (!dinfo) {
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goto err;
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}
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if (dinfo->devaddr) {
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monitor_printf(mon, "Parameter addr not supported\n");
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goto err;
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}
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switch (dinfo->type) {
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case IF_NONE:
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monitor_printf(mon, "OK\n");
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break;
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default:
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if (pci_drive_hot_add(mon, qdict, dinfo)) {
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goto err;
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}
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}
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return;
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err:
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if (dinfo) {
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drive_put_ref(dinfo);
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}
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}
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