[qemu.git] / hw / pci / pci-hotplug.c

/*
 * QEMU PCI hotplug support
 *
 * 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/blockdev.h"
#include "qapi/error.h"

#if defined(TARGET_I386)
static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
                                       const char *devaddr,
                                       const char *opts_str)
{
    Error *local_err = NULL;
    QemuOpts *opts;
    PCIBus *bus;
    int ret, devfn;

    bus = pci_get_bus_devfn(&devfn, devaddr);
    if (!bus) {
        monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
        return NULL;
    }
    if (!((BusState*)bus)->allow_hotplug) {
        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");

    ret = net_client_init(opts, 0, &local_err);
    if (error_is_set(&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], "rtl8139", devaddr);
}

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

    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, dinfo->bdrv, dinfo->unit,
                                        false, -1, NULL);
    if (!scsidev) {
        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 dom, pci_bus;
    unsigned slot;
    PCIDevice *dev;
    const char *pci_addr = qdict_get_str(qdict, "pci_addr");

    switch (dinfo->type) {
    case IF_SCSI:
        if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
            goto err;
        }
        dev = pci_find_device(pci_find_root_bus(dom), 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 *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;
    }

    bus = pci_get_bus_devfn(&devfn, devaddr);
    if (!bus) {
        monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
        return NULL;
    }
    if (!((BusState*)bus)->allow_hotplug) {
        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", dinfo->bdrv) < 0) {
            qdev_free(&dev->qdev);
            dev = NULL;
            break;
        }
        if (qdev_init(&dev->qdev) < 0)
            dev = NULL;
        break;
    default:
        dev = NULL;
    }
    return dev;
}

void pci_device_hot_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 domain %d, bus %d, slot %d, function %d\n",
                       pci_find_domain(dev->bus),
                       pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
                       PCI_FUNC(dev->devfn));
    } else
        monitor_printf(mon, "failed to add %s\n", opts);
}
#endif

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

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

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

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

    return 0;
}

void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
{
    pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
}
Commit	Line	Data
6f338c34 AL	1	/*
	2	* QEMU PCI hotplug support
	3	*
	4	* Copyright (c) 2004 Fabrice Bellard
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
	24
c759b24f MT	25	#include "hw/hw.h"
	26	#include "hw/boards.h"
	27	#include "hw/pci/pci.h"
1422e32d	28	#include "net/net.h"
0d09e41a	29	#include "hw/i386/pc.h"
83c9089e	30	#include "monitor/monitor.h"
0d09e41a PB	31	#include "hw/scsi/scsi.h"
0d09e41a PB	32	#include "hw/virtio/virtio-blk.h"
1de7afc9	33	#include "qemu/config-file.h"
9c17d615	34	#include "sysemu/blockdev.h"
7b1b5d19	35	#include "qapi/error.h"
6f338c34	36
ce88f890	37	#if defined(TARGET_I386)
1f5f6638	38	static PCIDevice qemu_pci_hot_add_nic(Monitor mon,
c59c7ea9 MM	39	const char *devaddr,
c59c7ea9 MM	40	const char *opts_str)
6f338c34	41	{
4559a1db	42	Error *local_err = NULL;
c59c7ea9	43	QemuOpts *opts;
53e0d8af GH	44	PCIBus *bus;
	45	int ret, devfn;
	46
	47	bus = pci_get_bus_devfn(&devfn, devaddr);
	48	if (!bus) {
	49	monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
	50	return NULL;
	51	}
	52	if (!((BusState*)bus)->allow_hotplug) {
	53	monitor_printf(mon, "PCI bus doesn't support hotplug\n");
	54	return NULL;
	55	}
6f338c34	56
3329f07b	57	opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
c59c7ea9	58	if (!opts) {
c59c7ea9 MM	59	return NULL;
	60	}
	61
	62	qemu_opt_set(opts, "type", "nic");
	63
4559a1db LC	64	ret = net_client_init(opts, 0, &local_err);
	65	if (error_is_set(&local_err)) {
	66	qerror_report_err(local_err);
	67	error_free(local_err);
6f338c34	68	return NULL;
4559a1db	69	}
5607c388 MA	70	if (nd_table[ret].devaddr) {
	71	monitor_printf(mon, "Parameter addr not supported\n");
	72	return NULL;
	73	}
1f5f6638	74	return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
6f338c34 AL	75	}
6f338c34 AL	76
6fdb03d5 MA	77	static int scsi_hot_add(Monitor mon, DeviceState adapter,
6fdb03d5 MA	78	DriveInfo *dinfo, int printinfo)
30d335d6 GH	79	{
	80	SCSIBus *scsibus;
	81	SCSIDevice *scsidev;
	82
b5007bcc PB	83	scsibus = (SCSIBus *)
	84	object_dynamic_cast(OBJECT(QLIST_FIRST(&adapter->child_bus)),
	85	TYPE_SCSI_BUS);
	86	if (!scsibus) {
	87	error_report("Device is not a SCSI adapter");
	88	return -1;
	89	}
30d335d6 GH	90
	91	/*
	92	* drive_init() tries to find a default for dinfo->unit. Doesn't
	93	* work at all for hotplug though as we assign the device to a
	94	* specific bus instead of the first bus with spare scsi ids.
	95	*
	96	* Ditch the calculated value and reload from option string (if
	97	* specified).
	98	*/
	99	dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
31e1ea3e	100	dinfo->bus = scsibus->busnr;
ce4e7e46	101	scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit,
76534da7	102	false, -1, NULL);
fa66b909 MA	103	if (!scsidev) {
	104	return -1;
	105	}
11f4d7f4	106	dinfo->unit = scsidev->id;
30d335d6 GH	107
30d335d6 GH	108	if (printinfo)
6fdb03d5 MA	109	monitor_printf(mon, "OK bus %d, unit %d\n",
6fdb03d5 MA	110	scsibus->busnr, scsidev->id);
30d335d6 GH	111	return 0;
	112	}
	113
4dbd84e2	114	int pci_drive_hot_add(Monitor mon, const QDict qdict, DriveInfo *dinfo)
6f338c34 AL	115	{
	116	int dom, pci_bus;
	117	unsigned slot;
6f338c34	118	PCIDevice *dev;
f18c16de	119	const char *pci_addr = qdict_get_str(qdict, "pci_addr");
6f338c34	120
4dbd84e2	121	switch (dinfo->type) {
6f338c34	122	case IF_SCSI:
4db49dc0 GH	123	if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
	124	goto err;
	125	}
5256d8bf IY	126	dev = pci_find_device(pci_find_root_bus(dom), pci_bus,
5256d8bf IY	127	PCI_DEVFN(slot, 0));
4db49dc0 GH	128	if (!dev) {
	129	monitor_printf(mon, "no pci device with address %s\n", pci_addr);
	130	goto err;
	131	}
6fdb03d5	132	if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
30d335d6 GH	133	goto err;
30d335d6 GH	134	}
6f338c34 AL	135	break;
6f338c34 AL	136	default:
4dbd84e2	137	monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
4db49dc0	138	goto err;
6f338c34 AL	139	}
6f338c34 AL	140
dd97aa8a	141	return 0;
4db49dc0	142	err:
dd97aa8a	143	return -1;
6f338c34 AL	144	}
6f338c34 AL	145
1f5f6638 MA	146	static PCIDevice qemu_pci_hot_add_storage(Monitor mon,
1f5f6638 MA	147	const char *devaddr,
376253ec	148	const char *opts)
6f338c34	149	{
1f5f6638	150	PCIDevice *dev;
06c79f4e	151	DriveInfo *dinfo = NULL;
751c6a17	152	int type = -1;
6f338c34	153	char buf[128];
49bd1458 MA	154	PCIBus *bus;
49bd1458 MA	155	int devfn;
6f338c34 AL	156
	157	if (get_param_value(buf, sizeof(buf), "if", opts)) {
	158	if (!strcmp(buf, "scsi"))
	159	type = IF_SCSI;
	160	else if (!strcmp(buf, "virtio")) {
	161	type = IF_VIRTIO;
8707ecca AL	162	} else {
8707ecca AL	163	monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
1f5f6638	164	return NULL;
6f338c34 AL	165	}
6f338c34 AL	166	} else {
376253ec	167	monitor_printf(mon, "no if= specified\n");
1f5f6638	168	return NULL;
6f338c34 AL	169	}
	170
	171	if (get_param_value(buf, sizeof(buf), "file", opts)) {
751c6a17 GH	172	dinfo = add_init_drive(opts);
751c6a17 GH	173	if (!dinfo)
1f5f6638	174	return NULL;
751c6a17	175	if (dinfo->devaddr) {
c2cc47a4 MA	176	monitor_printf(mon, "Parameter addr not supported\n");
	177	return NULL;
	178	}
7432ff5d BS	179	} else {
7432ff5d BS	180	dinfo = NULL;
6f338c34 AL	181	}
6f338c34 AL	182
49bd1458 MA	183	bus = pci_get_bus_devfn(&devfn, devaddr);
	184	if (!bus) {
	185	monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
	186	return NULL;
	187	}
53e0d8af GH	188	if (!((BusState*)bus)->allow_hotplug) {
	189	monitor_printf(mon, "PCI bus doesn't support hotplug\n");
	190	return NULL;
	191	}
49bd1458	192
6f338c34 AL	193	switch (type) {
6f338c34 AL	194	case IF_SCSI:
499cf102	195	dev = pci_create(bus, devfn, "lsi53c895a");
5b684b5a GH	196	if (qdev_init(&dev->qdev) < 0)
5b684b5a GH	197	dev = NULL;
ec7efac4	198	if (dev && dinfo) {
6fdb03d5	199	if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
56f9107e	200	qdev_unplug(&dev->qdev, NULL);
30d335d6 GH	201	dev = NULL;
30d335d6 GH	202	}
5b684b5a	203	}
6f338c34 AL	204	break;
6f338c34 AL	205	case IF_VIRTIO:
7432ff5d BS	206	if (!dinfo) {
	207	monitor_printf(mon, "virtio requires a backing file/device.\n");
	208	return NULL;
	209	}
499cf102	210	dev = pci_create(bus, devfn, "virtio-blk-pci");
18846dee MA	211	if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
	212	qdev_free(&dev->qdev);
	213	dev = NULL;
	214	break;
	215	}
5b684b5a GH	216	if (qdev_init(&dev->qdev) < 0)
5b684b5a GH	217	dev = NULL;
6f338c34	218	break;
1f5f6638 MA	219	default:
1f5f6638 MA	220	dev = NULL;
6f338c34	221	}
1f5f6638	222	return dev;
6f338c34 AL	223	}
6f338c34 AL	224
6c6a58ae	225	void pci_device_hot_add(Monitor mon, const QDict qdict)
6f338c34 AL	226	{
6f338c34 AL	227	PCIDevice *dev = NULL;
1d4daa91 LC	228	const char *pci_addr = qdict_get_str(qdict, "pci_addr");
	229	const char *type = qdict_get_str(qdict, "type");
	230	const char *opts = qdict_get_try_str(qdict, "opts");
6f338c34	231
e9283f8b JK	232	/* strip legacy tag */
	233	if (!strncmp(pci_addr, "pci_addr=", 9)) {
	234	pci_addr += 9;
6f338c34 AL	235	}
6f338c34 AL	236
a62acdc0 JK	237	if (!opts) {
	238	opts = "";
	239	}
	240
e9283f8b JK	241	if (!strcmp(pci_addr, "auto"))
e9283f8b JK	242	pci_addr = NULL;
6f338c34	243
395560c8	244	if (strcmp(type, "nic") == 0) {
e9283f8b	245	dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
395560c8	246	} else if (strcmp(type, "storage") == 0) {
e9283f8b	247	dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
395560c8	248	} else {
376253ec	249	monitor_printf(mon, "invalid type: %s\n", type);
395560c8	250	}
6f338c34 AL	251
6f338c34 AL	252	if (dev) {
6c6a58ae	253	monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
e075e788 IY	254	pci_find_domain(dev->bus),
e075e788 IY	255	pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
6c6a58ae MA	256	PCI_FUNC(dev->devfn));
6c6a58ae MA	257	} else
376253ec	258	monitor_printf(mon, "failed to add %s\n", opts);
6f338c34 AL	259	}
	260	#endif
	261
f2b07c92	262	static int pci_device_hot_remove(Monitor mon, const char pci_addr)
6f338c34 AL	263	{
	264	PCIDevice *d;
	265	int dom, bus;
	266	unsigned slot;
56f9107e	267	Error *local_err = NULL;
6f338c34	268
e9283f8b	269	if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
053801bc	270	return -1;
6f338c34 AL	271	}
6f338c34 AL	272
5256d8bf	273	d = pci_find_device(pci_find_root_bus(dom), bus, PCI_DEVFN(slot, 0));
6f338c34	274	if (!d) {
376253ec	275	monitor_printf(mon, "slot %d empty\n", slot);
053801bc	276	return -1;
6f338c34	277	}
56f9107e LC	278
	279	qdev_unplug(&d->qdev, &local_err);
	280	if (error_is_set(&local_err)) {
	281	monitor_printf(mon, "%s\n", error_get_pretty(local_err));
	282	error_free(local_err);
	283	return -1;
	284	}
	285
	286	return 0;
6f338c34 AL	287	}
6f338c34 AL	288
b752daf0	289	void do_pci_device_hot_remove(Monitor mon, const QDict qdict)
38183186	290	{
b752daf0	291	pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
38183186	292	}