[mirror_qemu.git] / hw / pci / pci-hotplug-old.c

/*
 * Deprecated PCI hotplug interface support
 * This covers the old pci_add / pci_del command, whereas the more general
 * device_add / device_del commands are now preferred.
 *
 * Copyright (c) 2004 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "hw/hw.h"
#include "hw/boards.h"
#include "hw/pci/pci.h"
#include "net/net.h"
#include "hw/i386/pc.h"
#include "monitor/monitor.h"
#include "hw/scsi/scsi.h"
#include "hw/virtio/virtio-blk.h"
#include "qemu/config-file.h"
#include "sysemu/block-backend.h"
#include "qapi/error.h"

static int pci_read_devaddr(Monitor *mon, const char *addr,
                            int *busp, unsigned *slotp)
{
    int dom;

    /* strip legacy tag */
    if (!strncmp(addr, "pci_addr=", 9)) {
        addr += 9;
    }
    if (pci_parse_devaddr(addr, &dom, busp, slotp, NULL)) {
        monitor_printf(mon, "Invalid pci address\n");
        return -1;
    }
    if (dom != 0) {
        monitor_printf(mon, "Multiple PCI domains not supported, use device_add\n");
        return -1;
    }
    return 0;
}

static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
                                       const char *devaddr,
                                       const char *opts_str)
{
    Error *local_err = NULL;
    QemuOpts *opts;
    PCIBus *root = pci_find_primary_bus();
    PCIBus *bus;
    int ret, devfn;

    if (!root) {
        monitor_printf(mon, "no primary PCI bus (if there are multiple"
                       " PCI roots, you must use device_add instead)");
        return NULL;
    }

    bus = pci_get_bus_devfn(&devfn, root, devaddr);
    if (!bus) {
        monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
        return NULL;
    }
    if (!qbus_is_hotpluggable(BUS(bus))) {
        monitor_printf(mon, "PCI bus doesn't support hotplug\n");
        return NULL;
    }

    opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
    if (!opts) {
        return NULL;
    }

    qemu_opt_set(opts, "type", "nic", &error_abort);

    ret = net_client_init(opts, 0, &local_err);
    if (local_err) {
        qerror_report_err(local_err);
        error_free(local_err);
        return NULL;
    }
    if (nd_table[ret].devaddr) {
        monitor_printf(mon, "Parameter addr not supported\n");
        return NULL;
    }
    return pci_nic_init(&nd_table[ret], root, "rtl8139", devaddr);
}

static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
                        DriveInfo *dinfo, int printinfo)
{
    SCSIBus *scsibus;
    SCSIDevice *scsidev;
    Error *local_err = NULL;

    scsibus = (SCSIBus *)
        object_dynamic_cast(OBJECT(QLIST_FIRST(&adapter->child_bus)),
                            TYPE_SCSI_BUS);
    if (!scsibus) {
	error_report("Device is not a SCSI adapter");
	return -1;
    }

    /*
     * drive_init() tries to find a default for dinfo->unit.  Doesn't
     * work at all for hotplug though as we assign the device to a
     * specific bus instead of the first bus with spare scsi ids.
     *
     * Ditch the calculated value and reload from option string (if
     * specified).
     */
    dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
    dinfo->bus = scsibus->busnr;
    scsidev = scsi_bus_legacy_add_drive(scsibus,
                                        blk_by_legacy_dinfo(dinfo),
                                        dinfo->unit, false, -1, NULL,
                                        &local_err);
    if (!scsidev) {
        error_report_err(local_err);
        return -1;
    }
    dinfo->unit = scsidev->id;

    if (printinfo)
        monitor_printf(mon, "OK bus %d, unit %d\n",
                       scsibus->busnr, scsidev->id);
    return 0;
}

int pci_drive_hot_add(Monitor *mon, const QDict *qdict, DriveInfo *dinfo)
{
    int pci_bus;
    unsigned slot;
    PCIBus *root = pci_find_primary_bus();
    PCIDevice *dev;
    const char *pci_addr = qdict_get_str(qdict, "pci_addr");

    switch (dinfo->type) {
    case IF_SCSI:
        if (!root) {
            monitor_printf(mon, "no primary PCI bus (if there are multiple"
                           " PCI roots, you must use device_add instead)");
            goto err;
        }
        if (pci_read_devaddr(mon, pci_addr, &pci_bus, &slot)) {
            goto err;
        }
        dev = pci_find_device(root, pci_bus, PCI_DEVFN(slot, 0));
        if (!dev) {
            monitor_printf(mon, "no pci device with address %s\n", pci_addr);
            goto err;
        }
        if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
            goto err;
        }
        break;
    default:
        monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
        goto err;
    }

    return 0;
err:
    return -1;
}

static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
                                           const char *devaddr,
                                           const char *opts)
{
    PCIDevice *dev;
    DriveInfo *dinfo = NULL;
    int type = -1;
    char buf[128];
    PCIBus *root = pci_find_primary_bus();
    PCIBus *bus;
    int devfn;

    if (get_param_value(buf, sizeof(buf), "if", opts)) {
        if (!strcmp(buf, "scsi"))
            type = IF_SCSI;
        else if (!strcmp(buf, "virtio")) {
            type = IF_VIRTIO;
        } else {
            monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
            return NULL;
        }
    } else {
        monitor_printf(mon, "no if= specified\n");
        return NULL;
    }

    if (get_param_value(buf, sizeof(buf), "file", opts)) {
        dinfo = add_init_drive(opts);
        if (!dinfo)
            return NULL;
        if (dinfo->devaddr) {
            monitor_printf(mon, "Parameter addr not supported\n");
            return NULL;
        }
    } else {
        dinfo = NULL;
    }

    if (!root) {
        monitor_printf(mon, "no primary PCI bus (if there are multiple"
                       " PCI roots, you must use device_add instead)");
        return NULL;
    }
    bus = pci_get_bus_devfn(&devfn, root, devaddr);
    if (!bus) {
        monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
        return NULL;
    }
    if (!qbus_is_hotpluggable(BUS(bus))) {
        monitor_printf(mon, "PCI bus doesn't support hotplug\n");
        return NULL;
    }

    switch (type) {
    case IF_SCSI:
        dev = pci_create(bus, devfn, "lsi53c895a");
        if (qdev_init(&dev->qdev) < 0)
            dev = NULL;
        if (dev && dinfo) {
            if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
                qdev_unplug(&dev->qdev, NULL);
                dev = NULL;
            }
        }
        break;
    case IF_VIRTIO:
        if (!dinfo) {
            monitor_printf(mon, "virtio requires a backing file/device.\n");
            return NULL;
        }
        dev = pci_create(bus, devfn, "virtio-blk-pci");
        if (qdev_prop_set_drive(&dev->qdev, "drive",
                                blk_by_legacy_dinfo(dinfo)) < 0) {
            object_unparent(OBJECT(dev));
            dev = NULL;
            break;
        }
        if (qdev_init(&dev->qdev) < 0)
            dev = NULL;
        break;
    default:
        dev = NULL;
    }
    return dev;
}

void hmp_pci_add(Monitor *mon, const QDict *qdict)
{
    PCIDevice *dev = NULL;
    const char *pci_addr = qdict_get_str(qdict, "pci_addr");
    const char *type = qdict_get_str(qdict, "type");
    const char *opts = qdict_get_try_str(qdict, "opts");

    /* strip legacy tag */
    if (!strncmp(pci_addr, "pci_addr=", 9)) {
        pci_addr += 9;
    }

    if (!opts) {
        opts = "";
    }

    if (!strcmp(pci_addr, "auto"))
        pci_addr = NULL;

    if (strcmp(type, "nic") == 0) {
        dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
    } else if (strcmp(type, "storage") == 0) {
        dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
    } else {
        monitor_printf(mon, "invalid type: %s\n", type);
    }

    if (dev) {
        monitor_printf(mon, "OK root bus %s, bus %d, slot %d, function %d\n",
                       pci_root_bus_path(dev),
                       pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
                       PCI_FUNC(dev->devfn));
    } else
        monitor_printf(mon, "failed to add %s\n", opts);
}

static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
{
    PCIBus *root = pci_find_primary_bus();
    PCIDevice *d;
    int bus;
    unsigned slot;
    Error *local_err = NULL;

    if (!root) {
        monitor_printf(mon, "no primary PCI bus (if there are multiple"
                       " PCI roots, you must use device_del instead)");
        return -1;
    }

    if (pci_read_devaddr(mon, pci_addr, &bus, &slot)) {
        return -1;
    }

    d = pci_find_device(root, bus, PCI_DEVFN(slot, 0));
    if (!d) {
        monitor_printf(mon, "slot %d empty\n", slot);
        return -1;
    }

    qdev_unplug(&d->qdev, &local_err);
    if (local_err) {
        monitor_printf(mon, "%s\n", error_get_pretty(local_err));
        error_free(local_err);
        return -1;
    }

    return 0;
}

void hmp_pci_del(Monitor *mon, const QDict *qdict)
{
    pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
}
Commit	Line	Data
	1	/*
	2	* Deprecated PCI hotplug interface support
	3	* This covers the old pci_add / pci_del command, whereas the more general
	4	* device_add / device_del commands are now preferred.
	5	*
	6	* Copyright (c) 2004 Fabrice Bellard
	7	*
	8	* Permission is hereby granted, free of charge, to any person obtaining a copy
	9	* of this software and associated documentation files (the "Software"), to deal
	10	* in the Software without restriction, including without limitation the rights
	11	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	12	* copies of the Software, and to permit persons to whom the Software is
	13	* furnished to do so, subject to the following conditions:
	14	*
	15	* The above copyright notice and this permission notice shall be included in
	16	* all copies or substantial portions of the Software.
	17	*
	18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	19	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	20	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	21	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	22	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	23	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	24	* THE SOFTWARE.
	25	*/
	26
	27	#include "hw/hw.h"
	28	#include "hw/boards.h"
	29	#include "hw/pci/pci.h"
	30	#include "net/net.h"
	31	#include "hw/i386/pc.h"
	32	#include "monitor/monitor.h"
	33	#include "hw/scsi/scsi.h"
	34	#include "hw/virtio/virtio-blk.h"
	35	#include "qemu/config-file.h"
	36	#include "sysemu/block-backend.h"
	37	#include "qapi/error.h"
	38
	39	static int pci_read_devaddr(Monitor mon, const char addr,
	40	int busp, unsigned slotp)
	41	{
	42	int dom;
	43
	44	/* strip legacy tag */
	45	if (!strncmp(addr, "pci_addr=", 9)) {
	46	addr += 9;
	47	}
	48	if (pci_parse_devaddr(addr, &dom, busp, slotp, NULL)) {
	49	monitor_printf(mon, "Invalid pci address\n");
	50	return -1;
	51	}
	52	if (dom != 0) {
	53	monitor_printf(mon, "Multiple PCI domains not supported, use device_add\n");
	54	return -1;
	55	}
	56	return 0;
	57	}
	58
	59	static PCIDevice qemu_pci_hot_add_nic(Monitor mon,
	60	const char *devaddr,
	61	const char *opts_str)
	62	{
	63	Error *local_err = NULL;
	64	QemuOpts *opts;
	65	PCIBus *root = pci_find_primary_bus();
	66	PCIBus *bus;
	67	int ret, devfn;
	68
	69	if (!root) {
	70	monitor_printf(mon, "no primary PCI bus (if there are multiple"
	71	" PCI roots, you must use device_add instead)");
	72	return NULL;
	73	}
	74
	75	bus = pci_get_bus_devfn(&devfn, root, devaddr);
	76	if (!bus) {
	77	monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
	78	return NULL;
	79	}
	80	if (!qbus_is_hotpluggable(BUS(bus))) {
	81	monitor_printf(mon, "PCI bus doesn't support hotplug\n");
	82	return NULL;
	83	}
	84
	85	opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
	86	if (!opts) {
	87	return NULL;
	88	}
	89
	90	qemu_opt_set(opts, "type", "nic", &error_abort);
	91
	92	ret = net_client_init(opts, 0, &local_err);
	93	if (local_err) {
	94	qerror_report_err(local_err);
	95	error_free(local_err);
	96	return NULL;
	97	}
	98	if (nd_table[ret].devaddr) {
	99	monitor_printf(mon, "Parameter addr not supported\n");
	100	return NULL;
	101	}
	102	return pci_nic_init(&nd_table[ret], root, "rtl8139", devaddr);
	103	}
	104
	105	static int scsi_hot_add(Monitor mon, DeviceState adapter,
	106	DriveInfo *dinfo, int printinfo)
	107	{
	108	SCSIBus *scsibus;
	109	SCSIDevice *scsidev;
	110	Error *local_err = NULL;
	111
	112	scsibus = (SCSIBus *)
	113	object_dynamic_cast(OBJECT(QLIST_FIRST(&adapter->child_bus)),
	114	TYPE_SCSI_BUS);
	115	if (!scsibus) {
	116	error_report("Device is not a SCSI adapter");
	117	return -1;
	118	}
	119
	120	/*
	121	* drive_init() tries to find a default for dinfo->unit. Doesn't
	122	* work at all for hotplug though as we assign the device to a
	123	* specific bus instead of the first bus with spare scsi ids.
	124	*
	125	* Ditch the calculated value and reload from option string (if
	126	* specified).
	127	*/
	128	dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
	129	dinfo->bus = scsibus->busnr;
	130	scsidev = scsi_bus_legacy_add_drive(scsibus,
	131	blk_by_legacy_dinfo(dinfo),
	132	dinfo->unit, false, -1, NULL,
	133	&local_err);
	134	if (!scsidev) {
	135	error_report_err(local_err);
	136	return -1;
	137	}
	138	dinfo->unit = scsidev->id;
	139
	140	if (printinfo)
	141	monitor_printf(mon, "OK bus %d, unit %d\n",
	142	scsibus->busnr, scsidev->id);
	143	return 0;
	144	}
	145
	146	int pci_drive_hot_add(Monitor mon, const QDict qdict, DriveInfo *dinfo)
	147	{
	148	int pci_bus;
	149	unsigned slot;
	150	PCIBus *root = pci_find_primary_bus();
	151	PCIDevice *dev;
	152	const char *pci_addr = qdict_get_str(qdict, "pci_addr");
	153
	154	switch (dinfo->type) {
	155	case IF_SCSI:
	156	if (!root) {
	157	monitor_printf(mon, "no primary PCI bus (if there are multiple"
	158	" PCI roots, you must use device_add instead)");
	159	goto err;
	160	}
	161	if (pci_read_devaddr(mon, pci_addr, &pci_bus, &slot)) {
	162	goto err;
	163	}
	164	dev = pci_find_device(root, pci_bus, PCI_DEVFN(slot, 0));
	165	if (!dev) {
	166	monitor_printf(mon, "no pci device with address %s\n", pci_addr);
	167	goto err;
	168	}
	169	if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
	170	goto err;
	171	}
	172	break;
	173	default:
	174	monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
	175	goto err;
	176	}
	177
	178	return 0;
	179	err:
	180	return -1;
	181	}
	182
	183	static PCIDevice qemu_pci_hot_add_storage(Monitor mon,
	184	const char *devaddr,
	185	const char *opts)
	186	{
	187	PCIDevice *dev;
	188	DriveInfo *dinfo = NULL;
	189	int type = -1;
	190	char buf[128];
	191	PCIBus *root = pci_find_primary_bus();
	192	PCIBus *bus;
	193	int devfn;
	194
	195	if (get_param_value(buf, sizeof(buf), "if", opts)) {
	196	if (!strcmp(buf, "scsi"))
	197	type = IF_SCSI;
	198	else if (!strcmp(buf, "virtio")) {
	199	type = IF_VIRTIO;
	200	} else {
	201	monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
	202	return NULL;
	203	}
	204	} else {
	205	monitor_printf(mon, "no if= specified\n");
	206	return NULL;
	207	}
	208
	209	if (get_param_value(buf, sizeof(buf), "file", opts)) {
	210	dinfo = add_init_drive(opts);
	211	if (!dinfo)
	212	return NULL;
	213	if (dinfo->devaddr) {
	214	monitor_printf(mon, "Parameter addr not supported\n");
	215	return NULL;
	216	}
	217	} else {
	218	dinfo = NULL;
	219	}
	220
	221	if (!root) {
	222	monitor_printf(mon, "no primary PCI bus (if there are multiple"
	223	" PCI roots, you must use device_add instead)");
	224	return NULL;
	225	}
	226	bus = pci_get_bus_devfn(&devfn, root, devaddr);
	227	if (!bus) {
	228	monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
	229	return NULL;
	230	}
	231	if (!qbus_is_hotpluggable(BUS(bus))) {
	232	monitor_printf(mon, "PCI bus doesn't support hotplug\n");
	233	return NULL;
	234	}
	235
	236	switch (type) {
	237	case IF_SCSI:
	238	dev = pci_create(bus, devfn, "lsi53c895a");
	239	if (qdev_init(&dev->qdev) < 0)
	240	dev = NULL;
	241	if (dev && dinfo) {
	242	if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
	243	qdev_unplug(&dev->qdev, NULL);
	244	dev = NULL;
	245	}
	246	}
	247	break;
	248	case IF_VIRTIO:
	249	if (!dinfo) {
	250	monitor_printf(mon, "virtio requires a backing file/device.\n");
	251	return NULL;
	252	}
	253	dev = pci_create(bus, devfn, "virtio-blk-pci");
	254	if (qdev_prop_set_drive(&dev->qdev, "drive",
	255	blk_by_legacy_dinfo(dinfo)) < 0) {
	256	object_unparent(OBJECT(dev));
	257	dev = NULL;
	258	break;
	259	}
	260	if (qdev_init(&dev->qdev) < 0)
	261	dev = NULL;
	262	break;
	263	default:
	264	dev = NULL;
	265	}
	266	return dev;
	267	}
	268
	269	void hmp_pci_add(Monitor mon, const QDict qdict)
	270	{
	271	PCIDevice *dev = NULL;
	272	const char *pci_addr = qdict_get_str(qdict, "pci_addr");
	273	const char *type = qdict_get_str(qdict, "type");
	274	const char *opts = qdict_get_try_str(qdict, "opts");
	275
	276	/* strip legacy tag */
	277	if (!strncmp(pci_addr, "pci_addr=", 9)) {
	278	pci_addr += 9;
	279	}
	280
	281	if (!opts) {
	282	opts = "";
	283	}
	284
	285	if (!strcmp(pci_addr, "auto"))
	286	pci_addr = NULL;
	287
	288	if (strcmp(type, "nic") == 0) {
	289	dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
	290	} else if (strcmp(type, "storage") == 0) {
	291	dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
	292	} else {
	293	monitor_printf(mon, "invalid type: %s\n", type);
	294	}
	295
	296	if (dev) {
	297	monitor_printf(mon, "OK root bus %s, bus %d, slot %d, function %d\n",
	298	pci_root_bus_path(dev),
	299	pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
	300	PCI_FUNC(dev->devfn));
	301	} else
	302	monitor_printf(mon, "failed to add %s\n", opts);
	303	}
	304
	305	static int pci_device_hot_remove(Monitor mon, const char pci_addr)
	306	{
	307	PCIBus *root = pci_find_primary_bus();
	308	PCIDevice *d;
	309	int bus;
	310	unsigned slot;
	311	Error *local_err = NULL;
	312
	313	if (!root) {
	314	monitor_printf(mon, "no primary PCI bus (if there are multiple"
	315	" PCI roots, you must use device_del instead)");
	316	return -1;
	317	}
	318
	319	if (pci_read_devaddr(mon, pci_addr, &bus, &slot)) {
	320	return -1;
	321	}
	322
	323	d = pci_find_device(root, bus, PCI_DEVFN(slot, 0));
	324	if (!d) {
	325	monitor_printf(mon, "slot %d empty\n", slot);
	326	return -1;
	327	}
	328
	329	qdev_unplug(&d->qdev, &local_err);
	330	if (local_err) {
	331	monitor_printf(mon, "%s\n", error_get_pretty(local_err));
	332	error_free(local_err);
	333	return -1;
	334	}
	335
	336	return 0;
	337	}
	338
	339	void hmp_pci_del(Monitor mon, const QDict qdict)
	340	{
	341	pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
	342	}